fixes

- Roster/Auctionhouse send initial getExecutors request
- Remove executor (made DELETE endpoint in executor pool)

.deployment/docker-compose.yml

@@ -67,6 +67,9 @@ services:
             - ./:/data/
         environment:
             mqtt.broker.uri: tcp://broker.hivemq.com:1883
+            discovery.endpoint.uri: https://tapas-auction-house.86-119-34-242.nip.io
+            auction.house.uri: https://tapas-auction-house.86-119-35-40.nip.io
+            tasks.list.uri: https://tapas-tasks.86-119-35-40.nip.io
         labels:
             - "traefik.enable=true"
             - "traefik.http.routers.tapas-auction-house.rule=Host(`tapas-auction-house.${PUB_IP}.nip.io`)"
@@ -86,8 +89,11 @@ services:
             - ./:/data/
         environment:
             task.list.uri: http://tapas-tasks:8081
+            auction.house.uri: http://tapas-auction-house:8086
             executor.robot.uri: http://executor-robot:8084
             executor.computation.uri: http://executor-computation:8085
+            executor.humidity.uri: http://executor-humidity:8087
+            executor.humidity.demo.uri: http://executor-humidity-demo:8088
             mqtt.broker.uri: tcp://broker.hivemq.com:1883
             spring.data.mongodb.uri: mongodb://root:password@tapas-db:27017
         labels:
@@ -161,3 +167,45 @@ services:
             - "traefik.http.routers.executor-robot.tls=true"
             - "traefik.http.routers.executor-robot.entryPoints=web,websecure"
             - "traefik.http.routers.executor-robot.tls.certresolver=le"
+    executor-humidity:
+        image: openjdk
+        command: "java -jar /data/executor-humidity-0.0.1-SNAPSHOT.jar"
+        restart: unless-stopped
+        depends_on:
+            - executor-pool
+            - roster
+            - tapas-db
+        volumes:
+            - ./:/data/
+        environment:
+            EXECUTOR_POOL_URI: http://executor-pool:8083
+            ROSTER_URI: http://roster:8082
+        labels:
+            - "traefik.enable=true"
+            - "traefik.http.routers.executor-humidity.rule=Host(`executor-humidity.${PUB_IP}.nip.io`)"
+            - "traefik.http.routers.executor-humidity.service=executor-humidity"
+            - "traefik.http.services.executor-humidity.loadbalancer.server.port=8087"
+            - "traefik.http.routers.executor-humidity.tls=true"
+            - "traefik.http.routers.executor-humidity.entryPoints=web,websecure"
+            - "traefik.http.routers.executor-humidity.tls.certresolver=le"
+    executor-humidity-demo:
+        image: openjdk
+        command: "java -jar /data/executor-humidity-demo-0.0.1-SNAPSHOT.jar"
+        restart: unless-stopped
+        depends_on:
+            - executor-pool
+            - roster
+            - tapas-db
+        volumes:
+            - ./:/data/
+        environment:
+            EXECUTOR_POOL_URI: http://executor-pool:8083
+            ROSTER_URI: http://roster:8082
+        labels:
+            - "traefik.enable=true"
+            - "traefik.http.routers.executor-humidity-demo.rule=Host(`executor-humidity-demo.${PUB_IP}.nip.io`)"
+            - "traefik.http.routers.executor-humidity-demo.service=executor-humidity-demo"
+            - "traefik.http.services.executor-humidity-demo.loadbalancer.server.port=8088"
+            - "traefik.http.routers.executor-humidity-demo.tls=true"
+            - "traefik.http.routers.executor-humidity-demo.entryPoints=web,websecure"
+            - "traefik.http.routers.executor-humidity-demo.tls.certresolver=le"

.github/workflows/build-and-deploy.yml

@@ -55,6 +55,14 @@ jobs:
               run: mvn -f executor-robot/pom.xml --batch-mode --update-snapshots verify
             - run: cp ./executor-robot/target/executor-robot-0.0.1-SNAPSHOT.jar ./target
 
+            - name: Build executor-humidity service
+              run: mvn -f executor-humidity/pom.xml --batch-mode --update-snapshots verify
+            - run: cp ./executor-humidity/target/executor-humidity-0.0.1-SNAPSHOT.jar ./target
+
+            - name: Build executor-humidity-demo service
+              run: mvn -f executor-humidity-demo/pom.xml --batch-mode --update-snapshots verify
+            - run: cp ./executor-humidity-demo/target/executor-humidity-demo-0.0.1-SNAPSHOT.jar ./target
+
             - name: Build tapas-task service
               run: mvn -f tapas-tasks/pom.xml --batch-mode --update-snapshots verify
             - run: cp ./tapas-tasks/target/tapas-tasks-0.0.1-SNAPSHOT.jar ./target
@@ -103,5 +111,6 @@ jobs:
                       cd /home/${{ secrets.SSH_USER }}/
                       touch acme.json
                       sudo chmod 0600 acme.json
+                      sudo docker-compose down --remove-orphans
                       sudo echo "PUB_IP=$(wget -qO- http://ipecho.net/plain | xargs echo)" | sed -e 's/\./-/g' > .env
-                      sudo docker-compose up -d --build --force-recreate
+                      sudo docker-compose up -d

Californium3.properties

@@ -0,0 +1,3 @@
+# Californium3 CoAP Properties file
+# Wed Dec 15 21:41:00 CET 2021
+#

docker-compose.yaml

@@ -72,15 +72,15 @@ services:
         volumes:
             - ./executor-computation/src:/opt/app/src
             - ./executor-computation/target:/opt/app/target
-    executor-robot:
-        container_name: executor-robot
-        build:
-            context: "."
-            dockerfile: "./executor-robot/Dockerfile"
-            target: development
-        ports:
-            - "8084:8084"
-            - "5009:5005"
-        volumes:
-            - ./executor-robot/src:/opt/app/src
-            - ./executor-robot/target:/opt/app/target
+    # executor-robot:
+    #     container_name: executor-robot
+    #     build:
+    #         context: "."
+    #         dockerfile: "./executor-robot/Dockerfile"
+    #         target: development
+    #     ports:
+    #         - "8084:8084"
+    #         - "5009:5005"
+    #     volumes:
+    #         - ./executor-robot/src:/opt/app/src
+    #         - ./executor-robot/target:/opt/app/target

executor-base/src/main/java/ch/unisg/executorBase/executor/adapter/in/web/TaskAvailableController.java

@@ -30,7 +30,7 @@ public class TaskAvailableController {
     @GetMapping(path = "/newtask/{taskType}", consumes = { "application/json" })
     public ResponseEntity<String> retrieveTaskFromTaskList(@PathVariable("taskType") String taskType) {
 
-        logger.info("New " + taskType + " available");
+        logger.info("ExecutorBase | New " + taskType + " task available");
 
         if (ExecutorType.contains(taskType.toUpperCase())) {
             TaskAvailableCommand command = new TaskAvailableCommand(

executor-base/src/main/java/ch/unisg/executorBase/executor/adapter/out/web/ExecutionFinishedEventAdapter.java

@@ -28,6 +28,8 @@ public class ExecutionFinishedEventAdapter implements ExecutionFinishedEventPort
     @Override
     public void publishExecutionFinishedEvent(ExecutionFinishedEvent event) {
 
+        logger.log(Level.INFO, "ExecutorBase | Sending finish execution event....");
+
         String body = new JSONObject()
         .put("taskID", event.getTaskID())
         .put("outputData", event.getOutputData())
@@ -51,8 +53,7 @@ public class ExecutionFinishedEventAdapter implements ExecutionFinishedEventPort
             logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
         }
 
-        logger.log(Level.INFO, "Finish execution event sent with result: {0}", event.getOutputData());
-
+        logger.log(Level.INFO, "ExecutorBase | Finish execution event sent with result: {0}", event.getOutputData());
     }
 
 }

executor-base/src/main/java/ch/unisg/executorBase/executor/adapter/out/web/GetAssignmentAdapter.java

@@ -8,8 +8,8 @@ import java.net.http.HttpResponse;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
-import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Primary;
+import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Component;
 
 import ch.unisg.common.valueobject.ExecutorURI;
@@ -49,16 +49,19 @@ public class GetAssignmentAdapter implements GetAssignmentPort {
                 .build();
 
         try {
-            logger.info("Sending getAssignment Request");
+            logger.info("ExecutorBase | Sending getAssignment request");
             HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
-            logger.log(Level.INFO, "getAssignment request result:\n {0}", response.body());
-            if (response.body().equals("")) {
+            if (response.statusCode() != HttpStatus.OK.value()) {
+                logger.info("ExecutorBase | No task assigned");
                 return null;
             }
+            logger.info("ExecutorBase | Task assigned");
             JSONObject responseBody = new JSONObject(response.body());
 
-            String inputData = responseBody.getString("inputData");
-            return new Task(responseBody.getString("taskID"), inputData);
+            if (!responseBody.get("inputData").equals(null)) {
+                return new Task(responseBody.getString("taskID"), responseBody.getString("inputData"));
+            }
+            return new Task(responseBody.getString("taskID"));
 
         } catch (InterruptedException e) {
             logger.log(Level.SEVERE, e.getLocalizedMessage(), e);

executor-base/src/main/java/ch/unisg/executorBase/executor/adapter/out/web/NotifyExecutorPoolAdapter.java

@@ -9,7 +9,6 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import org.json.JSONObject;
-import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Primary;
 import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Component;
@@ -41,7 +40,7 @@ public class NotifyExecutorPoolAdapter implements NotifyExecutorPoolPort {
 
         HttpClient client = HttpClient.newHttpClient();
         HttpRequest request = HttpRequest.newBuilder()
-                .uri(URI.create(server+"/executor-pool/AddExecutor"))
+                .uri(URI.create(server+"/executor-pool/executors"))
                 .header("Content-Type", "application/json")
                 .POST(HttpRequest.BodyPublishers.ofString(body))
                 .build();

executor-base/src/main/java/ch/unisg/executorBase/executor/application/port/in/TaskAvailableCommand.java

@@ -4,9 +4,11 @@ import javax.validation.constraints.NotNull;
 
 import ch.unisg.common.validation.SelfValidating;
 import ch.unisg.executorbase.executor.domain.ExecutorType;
+import lombok.EqualsAndHashCode;
 import lombok.Value;
 
 @Value
+@EqualsAndHashCode(callSuper=false)
 public class TaskAvailableCommand extends SelfValidating<TaskAvailableCommand> {
 
     @NotNull

executor-base/src/main/java/ch/unisg/executorBase/executor/application/service/TaskAvailableService.java

@@ -15,6 +15,6 @@ public class TaskAvailableService implements TaskAvailableUseCase {
 
     @Override
     public void newTaskAvailable(TaskAvailableCommand command) {
-      // Placeholder so spring can create a bean, implementation of this function is inside the executors
+      // Placeholder so spring can create a bean, implementation of this service is inside the individual executors
     }
 }

executor-base/src/main/java/ch/unisg/executorBase/executor/domain/ExecutorBase.java

@@ -34,18 +34,19 @@ public abstract class ExecutorBase {
     Logger logger = Logger.getLogger(ExecutorBase.class.getName());
 
     protected ExecutorBase(ExecutorType executorType) {
-        logger.info("Starting Executor");
+        logger.info("ExecutorBase | Starting Executor");
         this.status = ExecutorStatus.STARTING_UP;
         this.executorType = executorType;
         // TODO set this automaticly
         this.executorURI = new ExecutorURI("http://localhost:8084");
         // TODO do this in main
         // Notify executor-pool about existence. If executor-pools response is successfull start with getting an assignment, else shut down executor.
+        logger.info("ExecutorBase | Notifying executor-pool about existens");
         if(!notifyExecutorPoolService.notifyExecutorPool(this.executorURI, this.executorType)) {
-            logger.log(Level.WARNING, "Executor could not connect to executor pool! Shuting down!");
+            logger.log(Level.WARNING, "ExecutorBase | Executor could not connect to executor pool! Shuting down!");
             System.exit(0);
         } else {
-            logger.info("Executor conntected to executor pool");
+            logger.info("ExecutorBase | Executor conntected to executor pool");
             this.status = ExecutorStatus.IDLING;
             getAssignment();
         }
@@ -58,10 +59,10 @@ public abstract class ExecutorBase {
     public void getAssignment() {
         Task newTask = getAssignmentPort.getAssignment(this.getExecutorType(), this.getExecutorURI());
         if (newTask != null) {
-            logger.info("Executor got a new task");
+            logger.info("ExecutorBase | Executor got a new task");
             this.executeTask(newTask);
         } else {
-            logger.info("Executor got no new task");
+            logger.info("ExecutorBase | Executor got no new task");
             this.status = ExecutorStatus.IDLING;
         }
     }
@@ -71,7 +72,7 @@ public abstract class ExecutorBase {
     *   @return void
     **/
     private void executeTask(Task task) {
-        logger.info("Starting execution");
+        logger.info("ExecutorBase | Starting execution");
         this.status = ExecutorStatus.EXECUTING;
 
         task.setOutputData(execution(task.getInputData()));
@@ -80,7 +81,7 @@ public abstract class ExecutorBase {
         executionFinishedEventPort.publishExecutionFinishedEvent(
             new ExecutionFinishedEvent(task.getTaskID(), task.getOutputData(), "SUCCESS"));
 
-        logger.info("Finish execution");
+        logger.info("ExecutorBase | Finish execution");
         getAssignment();
     }
 

executor-base/src/main/java/ch/unisg/executorBase/executor/domain/ExecutorType.java

@@ -1,11 +1,11 @@
 package ch.unisg.executorbase.executor.domain;
 
 public enum ExecutorType {
-    ADDITION, ROBOT;
+    COMPUTATION, SMALLROBOT, HUMIDITY, HUMIDITY_DEMO;
 
     /**
     *   Checks if the give executor type exists.
-    *   @return Wheter the given executor type exists
+    *   @return Whether the given executor type exists
     **/
     public static boolean contains(String test) {
 

executor-base/src/main/java/ch/unisg/executorBase/executor/domain/Task.java

@@ -19,7 +19,12 @@ public class Task {
 
     public Task(String taskID, String inputData) {
         this.taskID = taskID;
-        this.inputData= inputData;
+        this.inputData = inputData;
+    }
+
+    public Task(String taskID) {
+        this.taskID = taskID;
+        this.inputData = "";
     }
 
 }

executor-computation/pom.xml

@@ -67,6 +67,17 @@
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-test</artifactId>
         </dependency>
+
+        <dependency>
+			<groupId>org.graalvm.js</groupId>
+			<artifactId>js</artifactId>
+			<version>21.3.0</version>
+		</dependency>
+		<dependency>
+			<groupId>org.graalvm.js</groupId>
+			<artifactId>js-scriptengine</artifactId>
+			<version>21.3.0</version>
+		</dependency>
 	</dependencies>
 
 	<build>

executor-computation/src/main/java/ch/unisg/executorcomputation/ExecutorcomputationApplication.java

@@ -1,6 +1,8 @@
 package ch.unisg.executorcomputation;
 
 import java.util.concurrent.TimeUnit;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
@@ -10,15 +12,9 @@ import ch.unisg.executorcomputation.executor.domain.Executor;
 @SpringBootApplication
 public class ExecutorcomputationApplication {
 
+    static Logger logger = Logger.getLogger(ExecutorcomputationApplication.class.getName());
+
 	public static void main(String[] args) {
-
-        try {
-            TimeUnit.SECONDS.sleep(40);
-        } catch (InterruptedException e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
-        }
-
 		SpringApplication.run(ExecutorcomputationApplication.class, args);
 		Executor.getExecutor();
 	}

executor-computation/src/main/java/ch/unisg/executorcomputation/executor/domain/Executor.java

@@ -1,13 +1,21 @@
 package ch.unisg.executorcomputation.executor.domain;
 
 import java.util.concurrent.TimeUnit;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import javax.script.ScriptEngine;
+import javax.script.ScriptEngineManager;
+import javax.script.ScriptException;
 
 import ch.unisg.executorbase.executor.domain.ExecutorBase;
 import ch.unisg.executorbase.executor.domain.ExecutorType;
 
 public class Executor extends ExecutorBase {
 
-    private static final Executor executor = new Executor(ExecutorType.ADDITION);
+    private static Logger executorLogger = Logger.getLogger(Executor.class.getName());
+
+    private static final Executor executor = new Executor(ExecutorType.COMPUTATION);
 
     public static Executor getExecutor() {
         return executor;
@@ -21,43 +29,30 @@ public class Executor extends ExecutorBase {
     protected
     String execution(String inputData) {
 
-        String operator = "";
-        if (inputData.contains("+")) {
-            operator = "+";
-        } else if (inputData.contains("-")) {
-            operator = "-";
-        } else if (inputData.contains("*")) {
-            operator = "*";
-        } else {
-            return "invalid data";
-        }
+        executorLogger.info("Executor | Starting execution with inputData: " + inputData);
 
-        double result = Double.NaN;
+        ScriptEngineManager mgr = new ScriptEngineManager();
+        ScriptEngine engine = mgr.getEngineByName("JavaScript");
+
+        String result = "";
+        try {
+            result = engine.eval(inputData).toString();
+        } catch (ScriptException e1) {
+            // TODO some logic if execution fails
+            executorLogger.severe(e1.getMessage());
+            return result;
+        }
 
         try {
-            TimeUnit.SECONDS.sleep(5);
+            TimeUnit.SECONDS.sleep(1);
         } catch (InterruptedException e) {
-            e.printStackTrace();
+            return result;
+            // executorLogger.log(Level.SEVERE, e.getLocalizedMessage(), e);
+            // Thread.currentThread().interrupt();
         }
 
-        if (operator.equalsIgnoreCase("+")) {
-            String[] parts = inputData.split("\\+");
-            double a = Double.parseDouble(parts[0]);
-            double b = Double.parseDouble(parts[1]);
-            result = a + b;
-        } else if (operator.equalsIgnoreCase("*")) {
-            String[] parts = inputData.split("\\*");
-            double a = Double.parseDouble(parts[0]);
-            double b = Double.parseDouble(parts[1]);
-            result = a * b;
-        } else if (operator.equalsIgnoreCase("-")) {
-            String[] parts = inputData.split("-");
-            double a = Double.parseDouble(parts[0]);
-            double b = Double.parseDouble(parts[1]);
-            result = a - b;
-        }
-
-        return Double.toString(result);
+        executorLogger.info("Executor | Finish execution");
+        return result;
     }
 
 }

executor-humidity-demo/.gitignore

@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

executor-humidity-demo/.mvn/wrapper/MavenWrapperDownloader.java

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2007-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import java.net.*;
+import java.io.*;
+import java.nio.channels.*;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+    private static final String WRAPPER_VERSION = "0.5.6";
+    /**
+     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+     */
+    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+        + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
+
+    /**
+     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+     * use instead of the default one.
+     */
+    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+            ".mvn/wrapper/maven-wrapper.properties";
+
+    /**
+     * Path where the maven-wrapper.jar will be saved to.
+     */
+    private static final String MAVEN_WRAPPER_JAR_PATH =
+            ".mvn/wrapper/maven-wrapper.jar";
+
+    /**
+     * Name of the property which should be used to override the default download url for the wrapper.
+     */
+    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+    public static void main(String args[]) {
+        System.out.println("- Downloader started");
+        File baseDirectory = new File(args[0]);
+        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+        // If the maven-wrapper.properties exists, read it and check if it contains a custom
+        // wrapperUrl parameter.
+        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+        String url = DEFAULT_DOWNLOAD_URL;
+        if(mavenWrapperPropertyFile.exists()) {
+            FileInputStream mavenWrapperPropertyFileInputStream = null;
+            try {
+                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+                Properties mavenWrapperProperties = new Properties();
+                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+            } catch (IOException e) {
+                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+            } finally {
+                try {
+                    if(mavenWrapperPropertyFileInputStream != null) {
+                        mavenWrapperPropertyFileInputStream.close();
+                    }
+                } catch (IOException e) {
+                    // Ignore ...
+                }
+            }
+        }
+        System.out.println("- Downloading from: " + url);
+
+        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+        if(!outputFile.getParentFile().exists()) {
+            if(!outputFile.getParentFile().mkdirs()) {
+                System.out.println(
+                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+            }
+        }
+        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+        try {
+            downloadFileFromURL(url, outputFile);
+            System.out.println("Done");
+            System.exit(0);
+        } catch (Throwable e) {
+            System.out.println("- Error downloading");
+            e.printStackTrace();
+            System.exit(1);
+        }
+    }
+
+    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+            String username = System.getenv("MVNW_USERNAME");
+            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+            Authenticator.setDefault(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+        }
+        URL website = new URL(urlString);
+        ReadableByteChannel rbc;
+        rbc = Channels.newChannel(website.openStream());
+        FileOutputStream fos = new FileOutputStream(destination);
+        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        fos.close();
+        rbc.close();
+    }
+
+}

executor-humidity-demo/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.2/apache-maven-3.8.2-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar

executor-humidity-demo/Californium3.properties

@@ -0,0 +1,3 @@
+# Californium3 CoAP Properties file
+# Wed Dec 15 22:23:03 CET 2021
+#

executor-humidity-demo/mvnw

@@ -0,0 +1,310 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  PRG="$0"
+
+  # need this for relative symlinks
+  while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+      PRG="$link"
+    else
+      PRG="`dirname "$PRG"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`which java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    if [ -n "$MVNW_REPOURL" ]; then
+      jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $jarUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget "$jarUrl" -O "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl -o "$wrapperJarPath" "$jarUrl" -f
+        else
+            curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+        fi
+
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaClass" ]; then
+            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaClass")
+            fi
+            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

executor-humidity-demo/mvnw.cmd

@@ -0,0 +1,182 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    https://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
+if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+
+FOR /F "tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %DOWNLOAD_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
+if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%" == "on" pause
+
+if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
+
+exit /B %ERROR_CODE%

executor-humidity-demo/pom.xml

@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.5.5</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>ch.unisg</groupId>
+    <artifactId>executor-humidity-demo</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>executor-humidity-demo</name>
+    <description>Demo project for Spring Boot</description>
+    <properties>
+		<java.version>11</java.version>
+	</properties>
+    <repositories>
+        <repository>
+            <id>jitpack.io</id>
+            <url>https://jitpack.io</url>
+        </repository>
+    </repositories>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-autoconfigure</artifactId>
+            <version>2.5.5</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+            <version>5.3.10</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-devtools</artifactId>
+			<scope>runtime</scope>
+			<optional>true</optional>
+		</dependency>
+        <dependency>
+            <groupId>ch.unisg</groupId>
+            <artifactId>executor-base</artifactId>
+            <version>0.0.1-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.californium</groupId>
+            <artifactId>californium-core</artifactId>
+            <version>3.0.0</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.github.Interactions-HSG</groupId>
+            <artifactId>wot-td-java</artifactId>
+            <version>0.1.1</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <excludes>
+                        <exclude>
+                            <groupId>org.projectlombok</groupId>
+                            <artifactId>lombok</artifactId>
+                        </exclude>
+                    </excludes>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

executor-humidity-demo/src/main/java/ch/unisg/executorhumidity/ExecutorhumidityApplication.java

@@ -0,0 +1,16 @@
+package ch.unisg.executorhumidity;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+import ch.unisg.executorhumidity.executor.domain.Executor;
+
+@SpringBootApplication
+public class ExecutorhumidityApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(ExecutorhumidityApplication.class, args);
+        Executor.getExecutor();
+    }
+
+}

executor-humidity-demo/src/main/java/ch/unisg/executorhumidity/executor/adapter/in/web/TaskAvailableController.java

@@ -0,0 +1,38 @@
+package ch.unisg.executorhumidity.executor.adapter.in.web;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RestController;
+
+import ch.unisg.executorbase.executor.application.port.in.TaskAvailableCommand;
+import ch.unisg.executorbase.executor.application.port.in.TaskAvailableUseCase;
+import ch.unisg.executorbase.executor.domain.ExecutorType;
+
+import java.util.concurrent.CompletableFuture;
+
+@RestController
+public class TaskAvailableController {
+    private final TaskAvailableUseCase taskAvailableUseCase;
+
+    public TaskAvailableController(TaskAvailableUseCase taskAvailableUseCase) {
+        this.taskAvailableUseCase = taskAvailableUseCase;
+    }
+
+    @GetMapping(path="/newtask/{taskType}")
+    public ResponseEntity<String> retrieveTaskfromTaskList(@PathVariable("taskType") String taskType) {
+
+        if (ExecutorType.contains(taskType.toUpperCase())) {
+            TaskAvailableCommand command = new TaskAvailableCommand(
+                ExecutorType.valueOf(taskType.toUpperCase()));
+            CompletableFuture.runAsync(() -> taskAvailableUseCase.newTaskAvailable(command));
+        }
+
+        // Add the content type as a response header
+        HttpHeaders responseHeaders = new HttpHeaders();
+
+        return new ResponseEntity<>("OK", responseHeaders, HttpStatus.OK);
+    }
+}

executor-humidity-demo/src/main/java/ch/unisg/executorhumidity/executor/adapter/out/GetHumidityAdapter.java

@@ -0,0 +1,114 @@
+package ch.unisg.executorhumidity.executor.adapter.out;
+
+import ch.unisg.executorhumidity.executor.application.port.out.GetHumidityPort;
+import ch.unisg.ics.interactions.wot.td.ThingDescription;
+import ch.unisg.ics.interactions.wot.td.affordances.Form;
+import ch.unisg.ics.interactions.wot.td.affordances.PropertyAffordance;
+import ch.unisg.ics.interactions.wot.td.clients.TDCoapRequest;
+import ch.unisg.ics.interactions.wot.td.clients.TDCoapResponse;
+import ch.unisg.ics.interactions.wot.td.io.TDGraphReader;
+import ch.unisg.ics.interactions.wot.td.schemas.ObjectSchema;
+import ch.unisg.ics.interactions.wot.td.vocabularies.TD;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Primary;
+import org.springframework.stereotype.Component;
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+
+import java.io.IOException;
+import java.io.StringReader;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.util.Map;
+import java.util.Optional;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+
+@Component
+@Primary
+public class GetHumidityAdapter implements GetHumidityPort {
+
+    String endpoint = System.getenv("SEARCH_ENGINE_URI") == null ?
+        "https://api.interactions.ics.unisg.ch/search/searchEngine" : System.getenv("SEARCH_ENGINE_URI");
+
+    @Override
+    public String getHumidity() {
+
+        String input = "@prefix dct: <http://purl.org/dc/terms/> . select ?title where { ?title dct:title 'Mirogate' }";
+
+        var httpRequest = HttpRequest.newBuilder()
+            .uri(URI.create(endpoint))
+            .header("Content-Type", "application/sparql-query")
+            .POST(HttpRequest.BodyPublishers.ofString(input))
+            .build();
+
+        var client = HttpClient.newHttpClient();
+
+        try {
+            String description = client.send(httpRequest, HttpResponse.BodyHandlers.ofString()).body();
+            String mirogateUri = null;
+
+            DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
+            DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
+            Document doc = dBuilder.parse(new InputSource(new StringReader(description)));
+
+            doc.getDocumentElement().normalize();
+
+            NodeList results = doc.getElementsByTagName("uri");
+            for (int temp = 0; temp < results.getLength(); temp += 1) {
+                Node nNode = results.item(temp);
+                if (nNode.getTextContent().contains("mirogate")) {
+                    mirogateUri = nNode.getTextContent();
+                }
+            }
+            if (mirogateUri == null) {
+                // TODO implement logic if execution failed
+                return "";
+            }
+
+            // Parse a TD from a string
+            ThingDescription td = TDGraphReader.readFromURL(ThingDescription.TDFormat.RDF_TURTLE, mirogateUri);
+
+            Optional<PropertyAffordance> humidity = td.getPropertyByName("humidity");
+
+            if (humidity.isPresent()) {
+                Optional<Form> form = humidity.get().getFirstFormForOperationType(TD.readProperty);
+
+                // System.out.println(humidity.get().getDataSchema().getDatatype());
+                if (form.isPresent()) {
+                    TDCoapRequest request = new TDCoapRequest(form.get(), TD.readProperty);
+                    try {
+                        TDCoapResponse response = request.execute();
+                        Map<String, Object> payload = response.getPayloadAsObject((ObjectSchema) humidity.get().getDataSchema());
+                        Object result = payload.get("https://interactions.ics.unisg.ch/mirogate#HumidityValue");
+                        return result.toString();
+
+                    } catch (IOException e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        } catch (ParserConfigurationException e1) {
+            // TODO Auto-generated catch block
+            e1.printStackTrace();
+        } catch (SAXException e1) {
+            // TODO Auto-generated catch block
+            e1.printStackTrace();
+        }
+        return null;
+    }
+}

executor-humidity-demo/src/main/java/ch/unisg/executorhumidity/executor/application/port/out/GetHumidityPort.java

@@ -0,0 +1,9 @@
+package ch.unisg.executorhumidity.executor.application.port.out;
+
+import org.eclipse.californium.elements.exception.ConnectorException;
+
+import java.io.IOException;
+
+public interface GetHumidityPort {
+    String getHumidity();
+}

executor-humidity-demo/src/main/java/ch/unisg/executorhumidity/executor/application/service/TaskAvailableService.java

@@ -0,0 +1,27 @@
+package ch.unisg.executorhumidity.executor.application.service;
+
+import ch.unisg.executorbase.executor.domain.ExecutorStatus;
+import ch.unisg.executorhumidity.executor.domain.Executor;
+import org.springframework.stereotype.Component;
+import ch.unisg.executorbase.executor.application.port.in.TaskAvailableCommand;
+import ch.unisg.executorbase.executor.application.port.in.TaskAvailableUseCase;
+import lombok.RequiredArgsConstructor;
+
+import javax.transaction.Transactional;
+
+@RequiredArgsConstructor
+@Component
+@Transactional
+public class TaskAvailableService  implements TaskAvailableUseCase {
+
+    @Override
+    public void newTaskAvailable(TaskAvailableCommand command) {
+
+        Executor executor = Executor.getExecutor();
+
+        if(executor.getExecutorType() == command.getTaskType() &&
+            executor.getStatus() == ExecutorStatus.IDLING) {
+            executor.getAssignment();
+        }
+    }
+}

executor-humidity-demo/src/main/java/ch/unisg/executorhumidity/executor/domain/Executor.java

@@ -0,0 +1,31 @@
+package ch.unisg.executorhumidity.executor.domain;
+
+import ch.unisg.executorbase.executor.domain.ExecutorBase;
+import ch.unisg.executorbase.executor.domain.ExecutorType;
+import ch.unisg.executorhumidity.executor.adapter.out.GetHumidityAdapter;
+import ch.unisg.executorhumidity.executor.application.port.out.GetHumidityPort;
+import org.eclipse.californium.elements.exception.ConnectorException;
+
+import java.io.IOException;
+
+public class Executor extends ExecutorBase {
+
+    private static final Executor executor = new Executor(ExecutorType.HUMIDITY_DEMO);
+
+    private final GetHumidityPort getHumidityPort = new GetHumidityAdapter();
+
+    private Executor(ExecutorType executorType) {super(executorType);}
+
+    public static Executor getExecutor() {return executor;}
+
+
+    @Override
+    protected
+    String execution(String input) {
+        //TODO: Fill
+
+        String result = getHumidityPort.getHumidity();
+
+        return result;
+    }
+}

executor-humidity-demo/src/main/resources/application.properties

@@ -0,0 +1,16 @@
+server.port=8088
+
+search.engine.uri=https://api.interactions.ics.unisg.ch/search/searchEngine
+
+spring.profiles.active=chaos-monkey
+chaos.monkey.enabled=false
+management.endpoint.chaosmonkey.enabled=true
+management.endpoint.chaosmonkeyjmx.enabled=true
+# include specific endpoints
+management.endpoints.web.exposure.include=health,info,chaosmonkey
+chaos.monkey.watcher.controller=true
+chaos.monkey.watcher.restController=true
+chaos.monkey.watcher.service=true
+chaos.monkey.watcher.repository=true
+chaos.monkey.watcher.component=true
+

executor-humidity/.gitignore

@@ -0,0 +1,33 @@
+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/

executor-humidity/.mvn/wrapper/MavenWrapperDownloader.java

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2007-present the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import java.net.*;
+import java.io.*;
+import java.nio.channels.*;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+    private static final String WRAPPER_VERSION = "0.5.6";
+    /**
+     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+     */
+    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+        + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
+
+    /**
+     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+     * use instead of the default one.
+     */
+    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+            ".mvn/wrapper/maven-wrapper.properties";
+
+    /**
+     * Path where the maven-wrapper.jar will be saved to.
+     */
+    private static final String MAVEN_WRAPPER_JAR_PATH =
+            ".mvn/wrapper/maven-wrapper.jar";
+
+    /**
+     * Name of the property which should be used to override the default download url for the wrapper.
+     */
+    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+    public static void main(String args[]) {
+        System.out.println("- Downloader started");
+        File baseDirectory = new File(args[0]);
+        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+        // If the maven-wrapper.properties exists, read it and check if it contains a custom
+        // wrapperUrl parameter.
+        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+        String url = DEFAULT_DOWNLOAD_URL;
+        if(mavenWrapperPropertyFile.exists()) {
+            FileInputStream mavenWrapperPropertyFileInputStream = null;
+            try {
+                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+                Properties mavenWrapperProperties = new Properties();
+                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+            } catch (IOException e) {
+                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+            } finally {
+                try {
+                    if(mavenWrapperPropertyFileInputStream != null) {
+                        mavenWrapperPropertyFileInputStream.close();
+                    }
+                } catch (IOException e) {
+                    // Ignore ...
+                }
+            }
+        }
+        System.out.println("- Downloading from: " + url);
+
+        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+        if(!outputFile.getParentFile().exists()) {
+            if(!outputFile.getParentFile().mkdirs()) {
+                System.out.println(
+                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+            }
+        }
+        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+        try {
+            downloadFileFromURL(url, outputFile);
+            System.out.println("Done");
+            System.exit(0);
+        } catch (Throwable e) {
+            System.out.println("- Error downloading");
+            e.printStackTrace();
+            System.exit(1);
+        }
+    }
+
+    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+            String username = System.getenv("MVNW_USERNAME");
+            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+            Authenticator.setDefault(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+        }
+        URL website = new URL(urlString);
+        ReadableByteChannel rbc;
+        rbc = Channels.newChannel(website.openStream());
+        FileOutputStream fos = new FileOutputStream(destination);
+        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        fos.close();
+        rbc.close();
+    }
+
+}

executor-humidity/.mvn/wrapper/maven-wrapper.properties

@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.2/apache-maven-3.8.2-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar

executor-humidity/Californium3.properties

@@ -0,0 +1,3 @@
+# Californium3 CoAP Properties file
+# Wed Dec 15 22:23:03 CET 2021
+#

executor-humidity/mvnw

@@ -0,0 +1,310 @@
+#!/bin/sh
+# ----------------------------------------------------------------------------
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#    https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+# ----------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------------
+# Maven Start Up Batch script
+#
+# Required ENV vars:
+# ------------------
+#   JAVA_HOME - location of a JDK home dir
+#
+# Optional ENV vars
+# -----------------
+#   M2_HOME - location of maven2's installed home dir
+#   MAVEN_OPTS - parameters passed to the Java VM when running Maven
+#     e.g. to debug Maven itself, use
+#       set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+#   MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+# ----------------------------------------------------------------------------
+
+if [ -z "$MAVEN_SKIP_RC" ] ; then
+
+  if [ -f /etc/mavenrc ] ; then
+    . /etc/mavenrc
+  fi
+
+  if [ -f "$HOME/.mavenrc" ] ; then
+    . "$HOME/.mavenrc"
+  fi
+
+fi
+
+# OS specific support.  $var _must_ be set to either true or false.
+cygwin=false;
+darwin=false;
+mingw=false
+case "`uname`" in
+  CYGWIN*) cygwin=true ;;
+  MINGW*) mingw=true;;
+  Darwin*) darwin=true
+    # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
+    # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
+    if [ -z "$JAVA_HOME" ]; then
+      if [ -x "/usr/libexec/java_home" ]; then
+        export JAVA_HOME="`/usr/libexec/java_home`"
+      else
+        export JAVA_HOME="/Library/Java/Home"
+      fi
+    fi
+    ;;
+esac
+
+if [ -z "$JAVA_HOME" ] ; then
+  if [ -r /etc/gentoo-release ] ; then
+    JAVA_HOME=`java-config --jre-home`
+  fi
+fi
+
+if [ -z "$M2_HOME" ] ; then
+  ## resolve links - $0 may be a link to maven's home
+  PRG="$0"
+
+  # need this for relative symlinks
+  while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+      PRG="$link"
+    else
+      PRG="`dirname "$PRG"`/$link"
+    fi
+  done
+
+  saveddir=`pwd`
+
+  M2_HOME=`dirname "$PRG"`/..
+
+  # make it fully qualified
+  M2_HOME=`cd "$M2_HOME" && pwd`
+
+  cd "$saveddir"
+  # echo Using m2 at $M2_HOME
+fi
+
+# For Cygwin, ensure paths are in UNIX format before anything is touched
+if $cygwin ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --unix "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --unix "$CLASSPATH"`
+fi
+
+# For Mingw, ensure paths are in UNIX format before anything is touched
+if $mingw ; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME="`(cd "$M2_HOME"; pwd)`"
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
+fi
+
+if [ -z "$JAVA_HOME" ]; then
+  javaExecutable="`which javac`"
+  if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
+    # readlink(1) is not available as standard on Solaris 10.
+    readLink=`which readlink`
+    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
+      if $darwin ; then
+        javaHome="`dirname \"$javaExecutable\"`"
+        javaExecutable="`cd \"$javaHome\" && pwd -P`/javac"
+      else
+        javaExecutable="`readlink -f \"$javaExecutable\"`"
+      fi
+      javaHome="`dirname \"$javaExecutable\"`"
+      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
+      JAVA_HOME="$javaHome"
+      export JAVA_HOME
+    fi
+  fi
+fi
+
+if [ -z "$JAVACMD" ] ; then
+  if [ -n "$JAVA_HOME"  ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+      # IBM's JDK on AIX uses strange locations for the executables
+      JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+      JAVACMD="$JAVA_HOME/bin/java"
+    fi
+  else
+    JAVACMD="`which java`"
+  fi
+fi
+
+if [ ! -x "$JAVACMD" ] ; then
+  echo "Error: JAVA_HOME is not defined correctly." >&2
+  echo "  We cannot execute $JAVACMD" >&2
+  exit 1
+fi
+
+if [ -z "$JAVA_HOME" ] ; then
+  echo "Warning: JAVA_HOME environment variable is not set."
+fi
+
+CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher
+
+# traverses directory structure from process work directory to filesystem root
+# first directory with .mvn subdirectory is considered project base directory
+find_maven_basedir() {
+
+  if [ -z "$1" ]
+  then
+    echo "Path not specified to find_maven_basedir"
+    return 1
+  fi
+
+  basedir="$1"
+  wdir="$1"
+  while [ "$wdir" != '/' ] ; do
+    if [ -d "$wdir"/.mvn ] ; then
+      basedir=$wdir
+      break
+    fi
+    # workaround for JBEAP-8937 (on Solaris 10/Sparc)
+    if [ -d "${wdir}" ]; then
+      wdir=`cd "$wdir/.."; pwd`
+    fi
+    # end of workaround
+  done
+  echo "${basedir}"
+}
+
+# concatenates all lines of a file
+concat_lines() {
+  if [ -f "$1" ]; then
+    echo "$(tr -s '\n' ' ' < "$1")"
+  fi
+}
+
+BASE_DIR=`find_maven_basedir "$(pwd)"`
+if [ -z "$BASE_DIR" ]; then
+  exit 1;
+fi
+
+##########################################################################################
+# Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+# This allows using the maven wrapper in projects that prohibit checking in binary data.
+##########################################################################################
+if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Found .mvn/wrapper/maven-wrapper.jar"
+    fi
+else
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..."
+    fi
+    if [ -n "$MVNW_REPOURL" ]; then
+      jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    else
+      jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    fi
+    while IFS="=" read key value; do
+      case "$key" in (wrapperUrl) jarUrl="$value"; break ;;
+      esac
+    done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties"
+    if [ "$MVNW_VERBOSE" = true ]; then
+      echo "Downloading from: $jarUrl"
+    fi
+    wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar"
+    if $cygwin; then
+      wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"`
+    fi
+
+    if command -v wget > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found wget ... using wget"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            wget "$jarUrl" -O "$wrapperJarPath"
+        else
+            wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath"
+        fi
+    elif command -v curl > /dev/null; then
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Found curl ... using curl"
+        fi
+        if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then
+            curl -o "$wrapperJarPath" "$jarUrl" -f
+        else
+            curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f
+        fi
+
+    else
+        if [ "$MVNW_VERBOSE" = true ]; then
+          echo "Falling back to using Java to download"
+        fi
+        javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java"
+        # For Cygwin, switch paths to Windows format before running javac
+        if $cygwin; then
+          javaClass=`cygpath --path --windows "$javaClass"`
+        fi
+        if [ -e "$javaClass" ]; then
+            if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Compiling MavenWrapperDownloader.java ..."
+                fi
+                # Compiling the Java class
+                ("$JAVA_HOME/bin/javac" "$javaClass")
+            fi
+            if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then
+                # Running the downloader
+                if [ "$MVNW_VERBOSE" = true ]; then
+                  echo " - Running MavenWrapperDownloader.java ..."
+                fi
+                ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR")
+            fi
+        fi
+    fi
+fi
+##########################################################################################
+# End of extension
+##########################################################################################
+
+export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"}
+if [ "$MVNW_VERBOSE" = true ]; then
+  echo $MAVEN_PROJECTBASEDIR
+fi
+MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS"
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin; then
+  [ -n "$M2_HOME" ] &&
+    M2_HOME=`cygpath --path --windows "$M2_HOME"`
+  [ -n "$JAVA_HOME" ] &&
+    JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
+  [ -n "$CLASSPATH" ] &&
+    CLASSPATH=`cygpath --path --windows "$CLASSPATH"`
+  [ -n "$MAVEN_PROJECTBASEDIR" ] &&
+    MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"`
+fi
+
+# Provide a "standardized" way to retrieve the CLI args that will
+# work with both Windows and non-Windows executions.
+MAVEN_CMD_LINE_ARGS="$MAVEN_CONFIG $@"
+export MAVEN_CMD_LINE_ARGS
+
+WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+exec "$JAVACMD" \
+  $MAVEN_OPTS \
+  -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \
+  "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \
+  ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@"

executor-humidity/mvnw.cmd

@@ -0,0 +1,182 @@
+@REM ----------------------------------------------------------------------------
+@REM Licensed to the Apache Software Foundation (ASF) under one
+@REM or more contributor license agreements.  See the NOTICE file
+@REM distributed with this work for additional information
+@REM regarding copyright ownership.  The ASF licenses this file
+@REM to you under the Apache License, Version 2.0 (the
+@REM "License"); you may not use this file except in compliance
+@REM with the License.  You may obtain a copy of the License at
+@REM
+@REM    https://www.apache.org/licenses/LICENSE-2.0
+@REM
+@REM Unless required by applicable law or agreed to in writing,
+@REM software distributed under the License is distributed on an
+@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+@REM KIND, either express or implied.  See the License for the
+@REM specific language governing permissions and limitations
+@REM under the License.
+@REM ----------------------------------------------------------------------------
+
+@REM ----------------------------------------------------------------------------
+@REM Maven Start Up Batch script
+@REM
+@REM Required ENV vars:
+@REM JAVA_HOME - location of a JDK home dir
+@REM
+@REM Optional ENV vars
+@REM M2_HOME - location of maven2's installed home dir
+@REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands
+@REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a keystroke before ending
+@REM MAVEN_OPTS - parameters passed to the Java VM when running Maven
+@REM     e.g. to debug Maven itself, use
+@REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000
+@REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files
+@REM ----------------------------------------------------------------------------
+
+@REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on'
+@echo off
+@REM set title of command window
+title %0
+@REM enable echoing by setting MAVEN_BATCH_ECHO to 'on'
+@if "%MAVEN_BATCH_ECHO%" == "on"  echo %MAVEN_BATCH_ECHO%
+
+@REM set %HOME% to equivalent of $HOME
+if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%")
+
+@REM Execute a user defined script before this one
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre
+@REM check for pre script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat"
+if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd"
+:skipRcPre
+
+@setlocal
+
+set ERROR_CODE=0
+
+@REM To isolate internal variables from possible post scripts, we use another setlocal
+@setlocal
+
+@REM ==== START VALIDATION ====
+if not "%JAVA_HOME%" == "" goto OkJHome
+
+echo.
+echo Error: JAVA_HOME not found in your environment. >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+:OkJHome
+if exist "%JAVA_HOME%\bin\java.exe" goto init
+
+echo.
+echo Error: JAVA_HOME is set to an invalid directory. >&2
+echo JAVA_HOME = "%JAVA_HOME%" >&2
+echo Please set the JAVA_HOME variable in your environment to match the >&2
+echo location of your Java installation. >&2
+echo.
+goto error
+
+@REM ==== END VALIDATION ====
+
+:init
+
+@REM Find the project base dir, i.e. the directory that contains the folder ".mvn".
+@REM Fallback to current working directory if not found.
+
+set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR%
+IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir
+
+set EXEC_DIR=%CD%
+set WDIR=%EXEC_DIR%
+:findBaseDir
+IF EXIST "%WDIR%"\.mvn goto baseDirFound
+cd ..
+IF "%WDIR%"=="%CD%" goto baseDirNotFound
+set WDIR=%CD%
+goto findBaseDir
+
+:baseDirFound
+set MAVEN_PROJECTBASEDIR=%WDIR%
+cd "%EXEC_DIR%"
+goto endDetectBaseDir
+
+:baseDirNotFound
+set MAVEN_PROJECTBASEDIR=%EXEC_DIR%
+cd "%EXEC_DIR%"
+
+:endDetectBaseDir
+
+IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig
+
+@setlocal EnableExtensions EnableDelayedExpansion
+for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a
+@endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS%
+
+:endReadAdditionalConfig
+
+SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe"
+set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar"
+set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain
+
+set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+
+FOR /F "tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO (
+    IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B
+)
+
+@REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central
+@REM This allows using the maven wrapper in projects that prohibit checking in binary data.
+if exist %WRAPPER_JAR% (
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Found %WRAPPER_JAR%
+    )
+) else (
+    if not "%MVNW_REPOURL%" == "" (
+        SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar"
+    )
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Couldn't find %WRAPPER_JAR%, downloading it ...
+        echo Downloading from: %DOWNLOAD_URL%
+    )
+
+    powershell -Command "&{"^
+		"$webclient = new-object System.Net.WebClient;"^
+		"if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^
+		"$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^
+		"}"^
+		"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^
+		"}"
+    if "%MVNW_VERBOSE%" == "true" (
+        echo Finished downloading %WRAPPER_JAR%
+    )
+)
+@REM End of extension
+
+@REM Provide a "standardized" way to retrieve the CLI args that will
+@REM work with both Windows and non-Windows executions.
+set MAVEN_CMD_LINE_ARGS=%*
+
+%MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %*
+if ERRORLEVEL 1 goto error
+goto end
+
+:error
+set ERROR_CODE=1
+
+:end
+@endlocal & set ERROR_CODE=%ERROR_CODE%
+
+if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost
+@REM check for post script, once with legacy .bat ending and once with .cmd ending
+if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat"
+if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd"
+:skipRcPost
+
+@REM pause the script if MAVEN_BATCH_PAUSE is set to 'on'
+if "%MAVEN_BATCH_PAUSE%" == "on" pause
+
+if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE%
+
+exit /B %ERROR_CODE%

executor-humidity/pom.xml

@@ -0,0 +1,81 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.5.5</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <groupId>ch.unisg</groupId>
+    <artifactId>executor-humidity</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+    <name>executor-humidity</name>
+    <description>Demo project for Spring Boot</description>
+    <properties>
+		<java.version>11</java.version>
+	</properties>
+    <repositories>
+        <repository>
+            <id>jitpack.io</id>
+            <url>https://jitpack.io</url>
+        </repository>
+    </repositories>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-autoconfigure</artifactId>
+            <version>2.5.5</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-web</artifactId>
+            <version>5.3.10</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-devtools</artifactId>
+			<scope>runtime</scope>
+			<optional>true</optional>
+		</dependency>
+        <dependency>
+            <groupId>ch.unisg</groupId>
+            <artifactId>executor-base</artifactId>
+            <version>0.0.1-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.eclipse.californium</groupId>
+            <artifactId>californium-core</artifactId>
+            <version>3.0.0</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.github.Interactions-HSG</groupId>
+            <artifactId>wot-td-java</artifactId>
+            <version>0.1.1</version>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+                <configuration>
+                    <excludes>
+                        <exclude>
+                            <groupId>org.projectlombok</groupId>
+                            <artifactId>lombok</artifactId>
+                        </exclude>
+                    </excludes>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

executor-humidity/src/main/java/ch/unisg/executorhumidity/ExecutorhumidityApplication.java

@@ -0,0 +1,16 @@
+package ch.unisg.executorhumidity;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+import ch.unisg.executorhumidity.executor.domain.Executor;
+
+@SpringBootApplication
+public class ExecutorhumidityApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(ExecutorhumidityApplication.class, args);
+        Executor.getExecutor();
+    }
+
+}

executor-humidity/src/main/java/ch/unisg/executorhumidity/executor/adapter/in/web/TaskAvailableController.java

@@ -0,0 +1,38 @@
+package ch.unisg.executorhumidity.executor.adapter.in.web;
+
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RestController;
+
+import ch.unisg.executorbase.executor.application.port.in.TaskAvailableCommand;
+import ch.unisg.executorbase.executor.application.port.in.TaskAvailableUseCase;
+import ch.unisg.executorbase.executor.domain.ExecutorType;
+
+import java.util.concurrent.CompletableFuture;
+
+@RestController
+public class TaskAvailableController {
+    private final TaskAvailableUseCase taskAvailableUseCase;
+
+    public TaskAvailableController(TaskAvailableUseCase taskAvailableUseCase) {
+        this.taskAvailableUseCase = taskAvailableUseCase;
+    }
+
+    @GetMapping(path="/newtask/{taskType}")
+    public ResponseEntity<String> retrieveTaskfromTaskList(@PathVariable("taskType") String taskType) {
+
+        if (ExecutorType.contains(taskType.toUpperCase())) {
+            TaskAvailableCommand command = new TaskAvailableCommand(
+                ExecutorType.valueOf(taskType.toUpperCase()));
+            CompletableFuture.runAsync(() -> taskAvailableUseCase.newTaskAvailable(command));
+        }
+
+        // Add the content type as a response header
+        HttpHeaders responseHeaders = new HttpHeaders();
+
+        return new ResponseEntity<>("OK", responseHeaders, HttpStatus.OK);
+    }
+}

executor-humidity/src/main/java/ch/unisg/executorhumidity/executor/adapter/out/GetHumidityAdapter.java

@@ -0,0 +1,114 @@
+package ch.unisg.executorhumidity.executor.adapter.out;
+
+import ch.unisg.executorhumidity.executor.application.port.out.GetHumidityPort;
+import ch.unisg.ics.interactions.wot.td.ThingDescription;
+import ch.unisg.ics.interactions.wot.td.affordances.Form;
+import ch.unisg.ics.interactions.wot.td.affordances.PropertyAffordance;
+import ch.unisg.ics.interactions.wot.td.clients.TDCoapRequest;
+import ch.unisg.ics.interactions.wot.td.clients.TDCoapResponse;
+import ch.unisg.ics.interactions.wot.td.io.TDGraphReader;
+import ch.unisg.ics.interactions.wot.td.schemas.ObjectSchema;
+import ch.unisg.ics.interactions.wot.td.vocabularies.TD;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Primary;
+import org.springframework.stereotype.Component;
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+
+import java.io.IOException;
+import java.io.StringReader;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.util.Map;
+import java.util.Optional;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+
+@Component
+@Primary
+public class GetHumidityAdapter implements GetHumidityPort {
+
+    String endpoint = System.getenv("SEARCH_ENGINE_URI") == null ?
+        "https://api.interactions.ics.unisg.ch/search/searchEngine" : System.getenv("SEARCH_ENGINE_URI");
+
+    @Override
+    public String getHumidity() {
+
+        String input = "@prefix dct: <http://purl.org/dc/terms/> . select ?title where { ?title dct:title 'Mirogate' }";
+
+        var httpRequest = HttpRequest.newBuilder()
+            .uri(URI.create(endpoint))
+            .header("Content-Type", "application/sparql-query")
+            .POST(HttpRequest.BodyPublishers.ofString(input))
+            .build();
+
+        var client = HttpClient.newHttpClient();
+
+        try {
+            String description = client.send(httpRequest, HttpResponse.BodyHandlers.ofString()).body();
+            String mirogateUri = null;
+
+            DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
+            DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
+            Document doc = dBuilder.parse(new InputSource(new StringReader(description)));
+
+            doc.getDocumentElement().normalize();
+
+            NodeList results = doc.getElementsByTagName("uri");
+            for (int temp = 0; temp < results.getLength(); temp += 1) {
+                Node nNode = results.item(temp);
+                if (nNode.getTextContent().contains("mirogate")) {
+                    mirogateUri = nNode.getTextContent();
+                }
+            }
+            if (mirogateUri == null) {
+                // TODO implement logic if execution failed
+                return "";
+            }
+
+            // Parse a TD from a string
+            ThingDescription td = TDGraphReader.readFromURL(ThingDescription.TDFormat.RDF_TURTLE, mirogateUri);
+
+            Optional<PropertyAffordance> humidity = td.getPropertyByName("humidity");
+
+            if (humidity.isPresent()) {
+                Optional<Form> form = humidity.get().getFirstFormForOperationType(TD.readProperty);
+
+                // System.out.println(humidity.get().getDataSchema().getDatatype());
+                if (form.isPresent()) {
+                    TDCoapRequest request = new TDCoapRequest(form.get(), TD.readProperty);
+                    try {
+                        TDCoapResponse response = request.execute();
+                        Map<String, Object> payload = response.getPayloadAsObject((ObjectSchema) humidity.get().getDataSchema());
+                        Object result = payload.get("https://interactions.ics.unisg.ch/mirogate#HumidityValue");
+                        return result.toString();
+
+                    } catch (IOException e) {
+                        e.printStackTrace();
+                    }
+                }
+            }
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        } catch (ParserConfigurationException e1) {
+            // TODO Auto-generated catch block
+            e1.printStackTrace();
+        } catch (SAXException e1) {
+            // TODO Auto-generated catch block
+            e1.printStackTrace();
+        }
+        return null;
+    }
+}

executor-humidity/src/main/java/ch/unisg/executorhumidity/executor/application/port/out/GetHumidityPort.java

@@ -0,0 +1,9 @@
+package ch.unisg.executorhumidity.executor.application.port.out;
+
+import org.eclipse.californium.elements.exception.ConnectorException;
+
+import java.io.IOException;
+
+public interface GetHumidityPort {
+    String getHumidity();
+}

executor-humidity/src/main/java/ch/unisg/executorhumidity/executor/application/service/TaskAvailableService.java

@@ -0,0 +1,27 @@
+package ch.unisg.executorhumidity.executor.application.service;
+
+import ch.unisg.executorbase.executor.domain.ExecutorStatus;
+import ch.unisg.executorhumidity.executor.domain.Executor;
+import org.springframework.stereotype.Component;
+import ch.unisg.executorbase.executor.application.port.in.TaskAvailableCommand;
+import ch.unisg.executorbase.executor.application.port.in.TaskAvailableUseCase;
+import lombok.RequiredArgsConstructor;
+
+import javax.transaction.Transactional;
+
+@RequiredArgsConstructor
+@Component
+@Transactional
+public class TaskAvailableService  implements TaskAvailableUseCase {
+
+    @Override
+    public void newTaskAvailable(TaskAvailableCommand command) {
+
+        Executor executor = Executor.getExecutor();
+
+        if(executor.getExecutorType() == command.getTaskType() &&
+            executor.getStatus() == ExecutorStatus.IDLING) {
+            executor.getAssignment();
+        }
+    }
+}

executor-humidity/src/main/java/ch/unisg/executorhumidity/executor/domain/Executor.java

@@ -0,0 +1,31 @@
+package ch.unisg.executorhumidity.executor.domain;
+
+import ch.unisg.executorbase.executor.domain.ExecutorBase;
+import ch.unisg.executorbase.executor.domain.ExecutorType;
+import ch.unisg.executorhumidity.executor.adapter.out.GetHumidityAdapter;
+import ch.unisg.executorhumidity.executor.application.port.out.GetHumidityPort;
+import org.eclipse.californium.elements.exception.ConnectorException;
+
+import java.io.IOException;
+
+public class Executor extends ExecutorBase {
+
+    private static final Executor executor = new Executor(ExecutorType.HUMIDITY);
+
+    private final GetHumidityPort getHumidityPort = new GetHumidityAdapter();
+
+    private Executor(ExecutorType executorType) {super(executorType);}
+
+    public static Executor getExecutor() {return executor;}
+
+
+    @Override
+    protected
+    String execution(String input) {
+        //TODO: Fill
+
+        String result = getHumidityPort.getHumidity();
+
+        return result;
+    }
+}

executor-humidity/src/main/resources/application.properties

@@ -0,0 +1,16 @@
+server.port=8087
+
+search.engine.uri=https://api.interactions.ics.unisg.ch/search/searchEngine
+
+spring.profiles.active=chaos-monkey
+chaos.monkey.enabled=false
+management.endpoint.chaosmonkey.enabled=true
+management.endpoint.chaosmonkeyjmx.enabled=true
+# include specific endpoints
+management.endpoints.web.exposure.include=health,info,chaosmonkey
+chaos.monkey.watcher.controller=true
+chaos.monkey.watcher.restController=true
+chaos.monkey.watcher.service=true
+chaos.monkey.watcher.repository=true
+chaos.monkey.watcher.component=true
+

executor-pool/src/main/java/ch/unisg/executorpool/ExecutorPoolApplication.java

@@ -1,7 +1,5 @@
 package ch.unisg.executorpool;
 
-import java.util.concurrent.TimeUnit;
-
 import javax.annotation.PostConstruct;
 
 import org.springframework.beans.factory.annotation.Autowired;
@@ -21,14 +19,6 @@ public class ExecutorPoolApplication {
     private LoadExecutorPort loadExecutorPort;
 
 	public static void main(String[] args) {
-
-        try {
-            TimeUnit.SECONDS.sleep(10);
-        } catch (InterruptedException e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
-        }
-
 		SpringApplication.run(ExecutorPoolApplication.class, args);
 	}
 

executor-pool/src/main/java/ch/unisg/executorpool/adapter/in/web/AddNewExecutorToExecutorPoolWebController.java

@@ -27,7 +27,7 @@ public class AddNewExecutorToExecutorPoolWebController {
         this.addNewExecutorToExecutorPoolUseCase = addNewExecutorToExecutorPoolUseCase;
     }
 
-    @PostMapping(path = "/executor-pool/AddExecutor", consumes = {ExecutorJsonRepresentation.EXECUTOR_MEDIA_TYPE})
+    @PostMapping(path = "/executor-pool/executors", consumes = {ExecutorJsonRepresentation.EXECUTOR_MEDIA_TYPE})
     public ResponseEntity<String> addNewExecutorToExecutorPool(@RequestBody ExecutorJsonRepresentation payload){
         try {
             AddNewExecutorToExecutorPoolCommand command = new AddNewExecutorToExecutorPoolCommand(

executor-pool/src/main/java/ch/unisg/executorpool/adapter/in/web/GetAllExecutorsInExecutorPoolWebController.java

@@ -19,7 +19,7 @@ public class GetAllExecutorsInExecutorPoolWebController {
         this.getAllExecutorsInExecutorPoolUseCase = getAllExecutorsInExecutorPoolUseCase;
     }
 
-    @GetMapping(path = "executor-pool/GetAllExecutorsinExecutorPool")
+    @GetMapping(path = "executor-pool/GetAllExecutorsInExecutorPool")
     public ResponseEntity<String> getAllExecutorsInExecutorPool(){
         List<ExecutorClass> executorClassList = getAllExecutorsInExecutorPoolUseCase.getAllExecutorsInExecutorPool();
 

executor-pool/src/main/java/ch/unisg/executorpool/adapter/in/web/RemoveExecutorFromExecutorPoolWebController.java

@@ -7,9 +7,7 @@ import ch.unisg.executorpool.domain.ExecutorClass;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
 import org.springframework.web.server.ResponseStatusException;
 
 import java.net.URI;
@@ -23,10 +21,10 @@ public class RemoveExecutorFromExecutorPoolWebController {
         this.removeExecutorFromExecutorPoolUseCase = removeExecutorFromExecutorPoolUseCase;
     }
 
-    @PostMapping(path = "/executor-pool/RemoveExecutor", consumes = {ExecutorJsonRepresentation.EXECUTOR_MEDIA_TYPE})
-    public ResponseEntity<String> removeExecutorFromExecutorPool(@RequestBody ExecutorJsonRepresentation executorJsonRepresentation){
+    @DeleteMapping(path = "/executor-pool/executors/{executorUri}")
+    public ResponseEntity<String> removeExecutorFromExecutorPool(@PathVariable("executorUri") String executorUri){
         RemoveExecutorFromExecutorPoolCommand command = new RemoveExecutorFromExecutorPoolCommand(
-            new ExecutorClass.ExecutorUri(URI.create(executorJsonRepresentation.getExecutorUri()))
+            new ExecutorClass.ExecutorUri(URI.create(executorUri))
         );
         Optional<ExecutorClass> removedExecutor = removeExecutorFromExecutorPoolUseCase.removeExecutorFromExecutorPool(command);
 

executor-pool/src/main/resources/application.properties

@@ -1,6 +1,7 @@
 server.port=8083
 
-mqtt.broker.uri=tcp://localhost:1883
+# mqtt.broker.uri=tcp://localhost:1883
+mqtt.broker.uri=tcp://broker.hivemq.com
 
 spring.data.mongodb.uri=mongodb://root:password@localhost:27017
 spring.data.mongodb.database=tapas-executors

executor-robot/pom.xml

@@ -18,6 +18,12 @@
 		<sonar.organization>scs-asse-fs21-group1</sonar.organization>
 		<sonar.host.url>https://sonarcloud.io</sonar.host.url>
 	</properties>
+    <repositories>
+        <repository>
+            <id>jitpack.io</id>
+            <url>https://jitpack.io</url>
+        </repository>
+    </repositories>
 	<dependencies>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -45,7 +51,42 @@
 			<artifactId>executor-base</artifactId>
 			<version>0.0.1-SNAPSHOT</version>
 		</dependency>
-	</dependencies>
+        <dependency>
+            <groupId>ch.unisg</groupId>
+            <artifactId>executor-base</artifactId>
+            <version>0.0.1-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>ch.unisg</groupId>
+            <artifactId>executor-base</artifactId>
+            <version>0.0.1-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>ch.unisg</groupId>
+            <artifactId>executor-base</artifactId>
+            <version>0.0.1-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>ch.unisg</groupId>
+            <artifactId>executor-base</artifactId>
+            <version>0.0.1-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>ch.unisg</groupId>
+            <artifactId>executor-base</artifactId>
+            <version>0.0.1-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+			<groupId>com.github.Interactions-HSG</groupId>
+			<artifactId>wot-td-java</artifactId>
+			<version>master-SNAPSHOT</version>
+		</dependency>
+    </dependencies>
 
 	<build>
 		<plugins>

executor-robot/src/main/java/ch/unisg/executorrobot/ExecutorrobotApplication.java

@@ -11,14 +11,6 @@ import ch.unisg.executorrobot.executor.domain.Executor;
 public class ExecutorrobotApplication {
 
 	public static void main(String[] args) {
-
-        try {
-            TimeUnit.SECONDS.sleep(40);
-        } catch (InterruptedException e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
-        }
-
 		SpringApplication.run(ExecutorrobotApplication.class, args);
 		Executor.getExecutor();
 	}

executor-robot/src/main/java/ch/unisg/executorrobot/executor/adapter/out/DeleteUserFromRobotAdapter.java

@@ -1,42 +0,0 @@
-package ch.unisg.executorrobot.executor.adapter.out;
-import java.io.IOException;
-import java.net.URI;
-import java.net.http.HttpClient;
-import java.net.http.HttpRequest;
-import java.net.http.HttpResponse;
-
-import org.springframework.context.annotation.Primary;
-import org.springframework.stereotype.Component;
-
-import ch.unisg.executorrobot.executor.application.port.out.DeleteUserFromRobotPort;
-
-@Component
-@Primary
-public class DeleteUserFromRobotAdapter implements DeleteUserFromRobotPort {
-
-    @Override
-    public boolean deleteUserFromRobot(String key) {
-
-        String url = "https://api.interactions.ics.unisg.ch/leubot1/v1.3.0/user/" + key;
-  
-        var request = HttpRequest.newBuilder()
-            .uri(URI.create(url))
-            .header("Content-Type", "application/json")
-            .DELETE()
-            .build();
- 
-        var client = HttpClient.newHttpClient();
- 
-        try {
-            var response = client.send(request, HttpResponse.BodyHandlers.ofString());
-            System.out.println(response.statusCode());
-            return true;
-        } catch (IOException e) {
-            e.printStackTrace();
-        } catch (InterruptedException e) {
-            e.printStackTrace();
-        }
-        return false;
-    }
-    
-}

executor-robot/src/main/java/ch/unisg/executorrobot/executor/adapter/out/InstructionToRobotAdapter.java

@@ -1,46 +0,0 @@
-package ch.unisg.executorrobot.executor.adapter.out;
-import java.io.IOException;
-import java.net.URI;
-import java.net.http.HttpClient;
-import java.net.http.HttpRequest;
-import java.net.http.HttpResponse;
-
-import org.springframework.context.annotation.Primary;
-import org.springframework.stereotype.Component;
-
-import ch.unisg.executorrobot.executor.application.port.out.InstructionToRobotPort;
-
-@Component
-@Primary
-public class InstructionToRobotAdapter implements InstructionToRobotPort {
-
-    @Override
-    public boolean instructionToRobot(String key) {
-        
-        String putEndpoint = "https://api.interactions.ics.unisg.ch/leubot1/v1.3.0/elbow";
- 
-        String inputJson = "{ \"value\": 400}";
-        var request = HttpRequest.newBuilder()
-            .uri(URI.create(putEndpoint))
-            .header("Content-Type", "application/json")
-            .header("X-API-KEY", key)
-            .PUT(HttpRequest.BodyPublishers.ofString(inputJson))
-            .build();
- 
-        var client = HttpClient.newHttpClient();
- 
-        try {
-            var response = client.send(request, HttpResponse.BodyHandlers.ofString());
-            System.out.println(response.statusCode());
-            System.out.println(response.headers());
-            return true;
-        } catch (IOException e) {
-            e.printStackTrace();
-        } catch (InterruptedException e) {
-            e.printStackTrace();
-        }
-        return false;
-
-    }
-    
-}

executor-robot/src/main/java/ch/unisg/executorrobot/executor/adapter/out/UserToRobotAdapter.java

@@ -1,12 +1,40 @@
 package ch.unisg.executorrobot.executor.adapter.out;
 import java.io.IOException;
+import java.io.StringReader;
 import java.net.URI;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Optional;
+import java.util.concurrent.TimeUnit;
 
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+import ch.unisg.ics.interactions.wot.td.ThingDescription;
+import ch.unisg.ics.interactions.wot.td.affordances.ActionAffordance;
+import ch.unisg.ics.interactions.wot.td.affordances.Form;
+import ch.unisg.ics.interactions.wot.td.clients.TDHttpRequest;
+import ch.unisg.ics.interactions.wot.td.clients.TDHttpResponse;
+import ch.unisg.ics.interactions.wot.td.io.TDGraphReader;
+import ch.unisg.ics.interactions.wot.td.schemas.DataSchema;
+import ch.unisg.ics.interactions.wot.td.schemas.ObjectSchema;
+import ch.unisg.ics.interactions.wot.td.security.APIKeySecurityScheme;
+import ch.unisg.ics.interactions.wot.td.security.SecurityScheme;
+import ch.unisg.ics.interactions.wot.td.vocabularies.TD;
+import ch.unisg.ics.interactions.wot.td.vocabularies.WoTSec;
+
+import org.springframework.boot.autoconfigure.sendgrid.SendGridAutoConfiguration;
 import org.springframework.context.annotation.Primary;
 import org.springframework.stereotype.Component;
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
 
 import ch.unisg.executorrobot.executor.application.port.out.UserToRobotPort;
 
@@ -16,31 +44,198 @@ public class UserToRobotAdapter implements UserToRobotPort {
 
     @Override
     public String userToRobot() {
-        String postEndpoint = "https://api.interactions.ics.unisg.ch/leubot1/v1.3.0/user";
- 
-        String inputJson = "{ \"name\":\"keanu rahimian\", \"email\":\"keanu.rahimian@student.unisg.ch\"}";
-        var request = HttpRequest.newBuilder()
-            .uri(URI.create(postEndpoint))
+
+        String endpoint = "https://api.interactions.ics.unisg.ch/search/searchEngine";
+
+        String input = "@prefix dct: <http://purl.org/dc/terms/> . select ?title where { ?title dct:title 'leubot1' }";
+
+        var httpRequest = HttpRequest.newBuilder()
+            .uri(URI.create(endpoint))
             .header("Content-Type", "application/json")
-            .POST(HttpRequest.BodyPublishers.ofString(inputJson))
+            .POST(HttpRequest.BodyPublishers.ofString(input))
             .build();
- 
+
         var client = HttpClient.newHttpClient();
-        
+
+        try {
+            String description = client.send(httpRequest, HttpResponse.BodyHandlers.ofString()).body();
+            String leubot1Uri = null;
+
+            DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
+            DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
+            Document doc = dBuilder.parse(new InputSource(new StringReader(description)));
+
+            doc.getDocumentElement().normalize();
+
+            NodeList results = doc.getElementsByTagName("uri");
+            for (int temp = 0; temp < results.getLength(); temp += 1) {
+                Node nNode = results.item(temp);
+                if (nNode.getTextContent().contains("leubot1")) {
+                    leubot1Uri = nNode.getTextContent();
+                }
+            }
+            if (leubot1Uri == null) {
+                // TODO implement logic if execution failed
+                return "ERROR";
+            }
+
+            // Parse a TD from a string
+            ThingDescription td = TDGraphReader.readFromURL(ThingDescription.TDFormat.RDF_TURTLE, leubot1Uri);
+
+            String apiUrl = getAPIKey(td);
+            System.out.println("FOUND API URL " + apiUrl);
+
+            String apiKey = apiUrl.split("/")[apiUrl.split("/").length-1].split("]")[0];
+            System.out.println("FOUND KEY " + apiKey);
+
+            if(apiKey == null) {
+                // TODO implement logic if execution failed
+                return "ERROR";
+            }
+
+            try {
+                TimeUnit.MILLISECONDS.sleep(1500);
+            } catch (InterruptedException e) {
+                // TODO Auto-generated catch block
+                e.printStackTrace();
+            }
+
+            if (!moveRobot(td, apiKey)) {
+                return "ERROR";
+            }
+
+            try {
+                TimeUnit.MILLISECONDS.sleep(1500);
+            } catch (InterruptedException e) {
+                // TODO Auto-generated catch block
+                e.printStackTrace();
+            }
+
+            delteUserFromRobot(apiUrl);
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        } catch (SAXException e1) {
+            e1.printStackTrace();
+        } catch (ParserConfigurationException e1) {
+            e1.printStackTrace();
+        }
+        return "OK";
+    }
+
+
+    private String getAPIKey(ThingDescription td) {
+        // Create the payload to be sent with the HTTP request
+        Map<String, Object> logInPayload = new HashMap<>();
+        logInPayload.put("http://xmlns.com/foaf/0.1/Name", "keanu rahimian");
+        logInPayload.put("http://xmlns.com/foaf/0.1/Mbox", "keanu.rahimian@student.unisg.ch");
+
+        // Get the affordance "Log-In" from the TD
+        Optional<ActionAffordance> action = td.getActionByName("logIn");
+
+        // Get the first form
+        if (action.isEmpty()) {
+            // TODO implement logic if execution failed
+            return null;
+        }
+
+        Optional<Form> form = action.get().getFirstFormForOperationType(TD.invokeAction);
+
+        if (form.isEmpty()) {
+            // TODO implement logic if execution failed
+            return null;
+        }
+
+        // If a form is found, use it to create and execute the HTTP request
+        TDHttpRequest request = new TDHttpRequest(form.get(), TD.invokeAction);
+
+        // Retrieve the input data schema from the action affordance
+        Optional<DataSchema> inputSchema = action.get().getInputSchema();
+
+        if(inputSchema.isPresent()) {
+            request.setObjectPayload((ObjectSchema) inputSchema.get(), logInPayload);
+        }
+
+        try {
+            TDHttpResponse response = request.execute();
+            System.out.println("Received response with status code: " + response.getStatusCode());
+
+            String url = response.getHeaders().get("Location");
+            return url;
+
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        return null;
+
+    }
+
+    private boolean moveRobot(ThingDescription td, String key) {
+
+        // Create the payload to be sent with the Http request
+        Map<String, Object> elbowPayload = new HashMap<>();
+        elbowPayload.put("value", 400);
+
+        // Get the affordance "setElbow" from the TD
+        Optional<ActionAffordance> action = td.getActionByName("setElbow");
+
+        // Get the first form
+        if (action.isEmpty()) {
+            return false;
+        }
+
+        Optional<Form> form = action.get().getFirstFormForOperationType(TD.invokeAction);
+
+        if (form.isEmpty()) {
+            // TODO implement logic if execution failed
+            return false;
+        }
+
+        // Retrieve the input data schema from the action affordance
+        Optional<DataSchema> inputSchema = action.get().getInputSchema();
+
+        TDHttpRequest request = new TDHttpRequest(form.get(), TD.invokeAction);
+
+        if(inputSchema.isPresent()) {
+            request.setObjectPayload((ObjectSchema) inputSchema.get(), elbowPayload);
+        }
+
+        Optional<SecurityScheme> securityScheme = td.getFirstSecuritySchemeByType(WoTSec.APIKeySecurityScheme);
+        if (securityScheme.isPresent()) {
+            request.setAPIKey((APIKeySecurityScheme) securityScheme.get(), key);
+        }
+
+        try {
+            TDHttpResponse response = request.execute();
+            System.out.println("Received response with status code: " + response.getStatusCode());
+            return true;
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+
+        return false;
+    }
+
+    private void delteUserFromRobot(String apiUrl) {
+        HttpRequest request = HttpRequest.newBuilder()
+        .uri(URI.create(apiUrl))
+        .header("Content-Type", "application/json")
+        .DELETE()
+        .build();
+
+        HttpClient client = HttpClient.newHttpClient();
+
         try {
             var response = client.send(request, HttpResponse.BodyHandlers.ofString());
             System.out.println(response.statusCode());
-            System.out.println(response.headers());
-            String url = response.headers().map().get("location").toString();
-            String key = url.split("/")[url.split("/").length-1].split("]")[0];
-            return key;
         } catch (IOException e) {
             e.printStackTrace();
         } catch (InterruptedException e) {
             e.printStackTrace();
         }
-        return null;
-        
     }
-    
+
 }

executor-robot/src/main/java/ch/unisg/executorrobot/executor/application/port/out/DeleteUserFromRobotPort.java

@@ -1,5 +0,0 @@
-package ch.unisg.executorrobot.executor.application.port.out;
-
-public interface DeleteUserFromRobotPort {
-    boolean deleteUserFromRobot(String key);
-}

executor-robot/src/main/java/ch/unisg/executorrobot/executor/application/port/out/InstructionToRobotPort.java

@@ -1,5 +0,0 @@
-package ch.unisg.executorrobot.executor.application.port.out;
-
-public interface InstructionToRobotPort {
-    boolean instructionToRobot(String key);
-}

executor-robot/src/main/java/ch/unisg/executorrobot/executor/domain/Executor.java

@@ -1,22 +1,14 @@
 package ch.unisg.executorrobot.executor.domain;
 
-import java.util.concurrent.TimeUnit;
-
-import ch.unisg.executorrobot.executor.adapter.out.DeleteUserFromRobotAdapter;
-import ch.unisg.executorrobot.executor.adapter.out.InstructionToRobotAdapter;
 import ch.unisg.executorrobot.executor.adapter.out.UserToRobotAdapter;
-import ch.unisg.executorrobot.executor.application.port.out.DeleteUserFromRobotPort;
-import ch.unisg.executorrobot.executor.application.port.out.InstructionToRobotPort;
 import ch.unisg.executorrobot.executor.application.port.out.UserToRobotPort;
 import ch.unisg.executorbase.executor.domain.ExecutorBase;
 import ch.unisg.executorbase.executor.domain.ExecutorType;
 
 public class Executor extends ExecutorBase {
 
-    private static final Executor executor = new Executor(ExecutorType.ROBOT);
+    private static final Executor executor = new Executor(ExecutorType.SMALLROBOT);
     private final UserToRobotPort userToRobotPort = new UserToRobotAdapter();
-    private final InstructionToRobotPort instructionToRobotPort = new InstructionToRobotAdapter();
-    private final DeleteUserFromRobotPort deleteUserFromRobotPort = new DeleteUserFromRobotAdapter();
 
     public static Executor getExecutor() {
         return executor;
@@ -29,24 +21,8 @@ public class Executor extends ExecutorBase {
     @Override
     protected
     String execution(String input) {
-
-        String key = userToRobotPort.userToRobot();
-        try {
-            TimeUnit.MILLISECONDS.sleep(1500);
-        } catch (InterruptedException e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
-        }
-        boolean result1 = instructionToRobotPort.instructionToRobot(key);
-        try {
-            TimeUnit.MILLISECONDS.sleep(10000);
-        } catch (InterruptedException e) {
-            // TODO Auto-generated catch block
-            e.printStackTrace();
-        }
-        deleteUserFromRobotPort.deleteUserFromRobot(key);
-
-        return Boolean.toString(result1);
+        userToRobotPort.userToRobot();
+        return "";
     }
 
 }

roster/src/main/java/ch/unisg/roster/RosterApplication.java

@@ -4,17 +4,20 @@ import java.util.List;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
+import javax.annotation.PostConstruct;
+
 import ch.unisg.roster.roster.adapter.out.persistence.mongodb.RosterRepository;
 import ch.unisg.roster.roster.application.port.in.LoadRosterItemPort;
+import ch.unisg.roster.roster.application.service.GetExecutorsService;
 import ch.unisg.roster.roster.domain.Roster;
 import ch.unisg.roster.roster.domain.RosterItem;
 import org.eclipse.paho.client.mqttv3.MqttException;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.core.env.ConfigurableEnvironment;
 
 import ch.unisg.roster.roster.adapter.common.clients.TapasMqttClient;
-import ch.unisg.roster.roster.adapter.in.messaging.mqtt.ExecutorEventMqttListener;
 import ch.unisg.roster.roster.adapter.in.messaging.mqtt.ExecutorEventsMqttDispatcher;
 import org.springframework.data.mongodb.repository.config.EnableMongoRepositories;
 
@@ -26,14 +29,16 @@ public class RosterApplication {
 
     private static ConfigurableEnvironment ENVIRONMENT;
 
-    private static LoadRosterItemPort loadRosterItemPort;
+    @Autowired
+    private LoadRosterItemPort loadRosterItemPort;
 
 	public static void main(String[] args) {
 
 		SpringApplication rosterApp = new SpringApplication(RosterApplication.class);
         ENVIRONMENT = rosterApp.run(args).getEnvironment();
         bootstrapMarketplaceWithMqtt();
-        initialiseRoster();
+        var getExecutorsService = new GetExecutorsService();
+        getExecutorsService.getExecutorsFromExecutorPool();
 	}
 
     /**
@@ -52,7 +57,8 @@ public class RosterApplication {
         }
     }
 
-    private static void initialiseRoster(){
+    @PostConstruct
+    private void initialiseRoster(){
         List<RosterItem> rosterItemList = loadRosterItemPort.loadAllRosterItems();
         Roster.getInstance().initialiseRoster(rosterItemList);
     }

roster/src/main/java/ch/unisg/roster/roster/adapter/in/messaging/mqtt/ExecutorAddedEventListenerMqttAdapter.java

@@ -18,8 +18,6 @@ public class ExecutorAddedEventListenerMqttAdapter extends ExecutorEventMqttList
     @Override
     public boolean handleEvent(MqttMessage message) {
 
-        System.out.println("New Executor added!");
-
         String payload = new String(message.getPayload());
 
         try {
@@ -30,6 +28,8 @@ public class ExecutorAddedEventListenerMqttAdapter extends ExecutorEventMqttList
             String taskType = data.get("executorTaskType").asText();
             String executorId = data.get("executorUri").asText();
 
+            LOGGER.info("Roster | New executor with type " + taskType + " added.");
+
             ExecutorAddedEvent executorAddedEvent = new ExecutorAddedEvent(
                 new ExecutorURI(executorId),
                 new ExecutorType(taskType)

roster/src/main/java/ch/unisg/roster/roster/adapter/in/web/ApplyForTaskWebController.java

@@ -1,11 +1,8 @@
 package ch.unisg.roster.roster.adapter.in.web;
 
-import ch.unisg.roster.roster.domain.Roster;
-import com.fasterxml.jackson.core.JsonProcessingException;
-import org.json.JSONObject;
-import org.springframework.http.HttpHeaders;
+import java.util.logging.Logger;
+
 import org.springframework.http.HttpStatus;
-import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RestController;
@@ -16,8 +13,6 @@ import ch.unisg.roster.roster.domain.ExecutorInfo;
 import ch.unisg.roster.roster.domain.Task;
 import org.springframework.web.server.ResponseStatusException;
 
-import javax.validation.ConstraintViolationException;
-
 @RestController
 public class ApplyForTaskWebController {
     private final ApplyForTaskUseCase applyForTaskUseCase;
@@ -26,14 +21,15 @@ public class ApplyForTaskWebController {
         this.applyForTaskUseCase = applyForTaskUseCase;
     }
 
-    // TODO fix return type
+    Logger logger = Logger.getLogger(ApplyForTaskWebController.class.getName());
+
     /**
     *   Checks if task is available for the requesting executor.
-    *   @return a task or null if no task found
+    *   @return a task or 404 if no task available
     **/
     @PostMapping(path = "/task/apply", consumes = {"application/json"})
-    public ResponseEntity<String> applyForTask (@RequestBody ExecutorInfo executorInfo) {
-
+    public Task applyForTask (@RequestBody ExecutorInfo executorInfo) {
+        logger.info("Roster | Execuor applying for task");
         ApplyForTaskCommand command = new ApplyForTaskCommand(executorInfo.getExecutorType(),
             executorInfo.getExecutorURI());
 
@@ -43,23 +39,6 @@ public class ApplyForTaskWebController {
             throw new ResponseStatusException(HttpStatus.NOT_FOUND);
         }
 
-        try {
-
-            String executorType = command.getTaskType().getValue().toString();
-            String executorURI = command.getExecutorURI().getValue().toString();
-
-            String jsonPayLoad = new JSONObject()
-                .put("executorType", executorType)
-                .put("executorURI", executorURI)
-                .toString();
-
-            HttpHeaders responseHeaders = new HttpHeaders();
-            responseHeaders.add("Content-Type", "application/json");
-
-            return new ResponseEntity<>(jsonPayLoad, responseHeaders, HttpStatus.CREATED);
-        } catch (ConstraintViolationException e) {
-            throw new ResponseStatusException(HttpStatus.BAD_REQUEST, e.getMessage());
-        }
-
+        return task;
     }
 }

roster/src/main/java/ch/unisg/roster/roster/adapter/in/web/DeleteTaskController.java

@@ -1,14 +1,15 @@
 package ch.unisg.roster.roster.adapter.in.web;
 
+import java.util.logging.Logger;
+
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.DeleteMapping;
-import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RestController;
 
 import ch.unisg.roster.roster.application.port.in.DeleteTaskCommand;
 import ch.unisg.roster.roster.application.port.in.DeleteTaskUseCase;
-import ch.unisg.roster.roster.domain.Task;
 
 @RestController
 public class DeleteTaskController {
@@ -18,14 +19,16 @@ public class DeleteTaskController {
         this.deleteTaskUseCase = deleteTaskUseCase;
     }
 
+    Logger logger = Logger.getLogger(DeleteTaskController.class.getName());
+
     /**
     *   Controller to delete a task
     *   @return 200 OK, 409 Conflict
     **/
-    @DeleteMapping(path = "/task", consumes = {"application/task+json"})
-    public ResponseEntity<Void> applyForTask(@RequestBody Task task) {
-
-        DeleteTaskCommand command = new DeleteTaskCommand(task.getTaskID(), task.getTaskType());
+    @DeleteMapping(path = "/task/{taskId}")
+    public ResponseEntity<Void> deleteTask(@PathVariable("taskId") String taskId) {
+        logger.info("Roster | Delete task request.");
+        DeleteTaskCommand command = new DeleteTaskCommand(taskId);
 
         if (deleteTaskUseCase.deleteTask(command)) {
             return new ResponseEntity<>(HttpStatus.OK);

roster/src/main/java/ch/unisg/roster/roster/adapter/in/web/NewTaskController.java

@@ -2,11 +2,14 @@ package ch.unisg.roster.roster.adapter.in.web;
 
 import java.util.logging.Logger;
 
+import org.springframework.http.HttpHeaders;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestHeader;
 import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.servlet.function.ServerRequest.Headers;
 
 import ch.unisg.roster.roster.application.port.in.NewTaskCommand;
 import ch.unisg.roster.roster.application.port.in.NewTaskUseCase;
@@ -27,16 +30,33 @@ public class NewTaskController {
     *   @return 201 Create or 409 Conflict
     **/
     @PostMapping(path = "/task", consumes = {"application/task+json"})
-    public ResponseEntity<Void> newTaskController(@RequestBody Task task) {
+    public ResponseEntity<Void> newTaskController(@RequestBody Task task, @RequestHeader HttpHeaders header) {
 
-            logger.info("New task with id:" + task.getTaskID());
+            logger.info("Roster | New task with id:" + task.getTaskID());
 
-            NewTaskCommand command = new NewTaskCommand(task.getTaskID(), task.getTaskType(),
+            // Check if task URI is passed in body. (This happends when we handeling an external task) Else get task URI from header.
+            String taskUri = task.getTaskUri();
+            if (taskUri == null) {
+                if (header.containsKey("Link")) {
+                    for (String location : header.get("Link")) {
+                        if (location.contains("rel=\"task\"")) {
+                            taskUri = location.split(">")[0].substring(1);
+                        }
+                    }
+                }
+            }
+
+            if (taskUri == null) {
+                logger.warning("Roster | TaskUri still null, something went wrong!");
+                return new ResponseEntity<>(HttpStatus.CONFLICT);
+            }
+
+            NewTaskCommand command = new NewTaskCommand(task.getTaskID(), taskUri, task.getTaskType(),
                 task.getInputData());
 
             boolean success = newTaskUseCase.addNewTaskToQueue(command);
 
-            logger.info("Could create task: " + success);
+            logger.info("Roster | Could create task: " + success);
 
             if (success) {
                 return new ResponseEntity<>(HttpStatus.CREATED);

roster/src/main/java/ch/unisg/roster/roster/adapter/out/web/GetExecutorsInExecutorPoolWebAdapter.java

@@ -0,0 +1,61 @@
+package ch.unisg.roster.roster.adapter.out.web;
+
+import ch.unisg.roster.roster.domain.ExecutorInfo;
+import org.apache.logging.log4j.Level;
+import org.json.JSONArray;
+import org.json.JSONObject;
+import org.springframework.http.HttpStatus;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.util.LinkedList;
+import java.util.List;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+public class GetExecutorsInExecutorPoolWebAdapter {
+    private static final Logger LOGGER = LogManager.getLogger(GetExecutorsInExecutorPoolWebAdapter.class);
+
+    // TODO get from config
+    String server = "http://localhost:8083";
+
+    public List<ExecutorInfo>  getExecutorsInExecutorPool(){
+        var client = HttpClient.newHttpClient();
+        var request = HttpRequest.newBuilder()
+            .uri(URI.create(server + "/executor-pool/GetAllExecutorsInExecutorPool"))
+            .GET()
+            .build();
+
+        try {
+            var response = client.send(request, HttpResponse.BodyHandlers.ofString());
+
+            if(response.statusCode() != HttpStatus.OK.value()){
+                LOGGER.log(Level.INFO, "Could not get executors from Executor Pool");
+                return null;
+            }
+
+            LOGGER.log(Level.INFO, "Executors received from ExecutorPool: " + response.body());
+
+            var jsonExecutorArray = new JSONArray(response.body());
+            var executorList = new LinkedList<ExecutorInfo>();
+
+            for(int i = 0; i < jsonExecutorArray.length(); i++){
+                var jsonExecutorObject = jsonExecutorArray.getJSONObject(i);
+                var executorURI = jsonExecutorObject.getString("executorUri");
+                var executorType = jsonExecutorObject.getString("executorTaskType");
+                executorList.add(new ExecutorInfo(executorURI, executorType));
+            }
+
+            return executorList;
+        } catch (IOException e) {
+            e.printStackTrace();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+
+        return null;
+    }
+}

roster/src/main/java/ch/unisg/roster/roster/adapter/out/web/LaunchAuctionEventAdapter.java

@@ -0,0 +1,65 @@
+package ch.unisg.roster.roster.adapter.out.web;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.util.HashMap;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Primary;
+import org.springframework.stereotype.Component;
+
+import ch.unisg.roster.roster.application.port.out.LaunchAuctionEventPort;
+import ch.unisg.roster.roster.domain.event.LaunchAuctionEvent;
+
+@Component
+@Primary
+public class LaunchAuctionEventAdapter implements LaunchAuctionEventPort {
+
+    @Value("${auction.house.uri}")
+    String server;
+
+    Logger logger = Logger.getLogger(LaunchAuctionEventAdapter.class.getName());
+
+    @Override
+    public void launchAuctionEvent(LaunchAuctionEvent launchAuctionEvent) {
+
+        var values = new HashMap<String, String>();
+
+        values.put("taskUri", launchAuctionEvent.taskUri);
+        values.put("taskType", launchAuctionEvent.taskType.getValue());
+
+        var objectMapper = new ObjectMapper();
+        String requestBody = null;
+        try {
+            requestBody = objectMapper.writeValueAsString(values);
+        } catch (JsonProcessingException e) {
+            e.printStackTrace();
+        }
+
+        HttpClient client = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder()
+            .uri(URI.create(server + "/auctions/"))
+            .header("Content-Type", "application/auction+json")
+            .POST(HttpRequest.BodyPublishers.ofString(requestBody))
+            .build();
+
+        try {
+            client.send(request, HttpResponse.BodyHandlers.ofString());
+        } catch (IOException e) {
+            logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
+        } catch (InterruptedException e) {
+            logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
+            Thread.currentThread().interrupt();
+        }
+
+    }
+
+}

roster/src/main/java/ch/unisg/roster/roster/adapter/out/web/PublishNewTaskEventAdapter.java

@@ -25,6 +25,12 @@ public class PublishNewTaskEventAdapter implements NewTaskEventPort {
     @Value("${executor.computation.uri}")
     private String server2;
 
+    @Value("${executor.humidity.uri}")
+    private String server3;
+
+    @Value("${executor.humidity.demo.uri}")
+    private String server4;
+
     Logger logger = Logger.getLogger(PublishNewTaskEventAdapter.class.getName());
 
     /**
@@ -34,21 +40,21 @@ public class PublishNewTaskEventAdapter implements NewTaskEventPort {
     @Override
     public void publishNewTaskEvent(NewTaskEvent event) {
 
-        // HttpClient client = HttpClient.newHttpClient();
-        // HttpRequest request = HttpRequest.newBuilder()
-        //         .uri(URI.create(server + "/newtask/" + event.taskType.getValue()))
-        //         .GET()
-        //         .build();
+        HttpClient client = HttpClient.newHttpClient();
+        HttpRequest request = HttpRequest.newBuilder()
+                .uri(URI.create(server + "/newtask/" + event.taskType.getValue()))
+                .GET()
+                .build();
 
 
-        // try {
-        //     client.send(request, HttpResponse.BodyHandlers.ofString());
-        // } catch (InterruptedException e) {
-        //     logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
-        //     Thread.currentThread().interrupt();
-        // } catch (IOException e) {
-        //     logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
-        // }
+        try {
+            client.send(request, HttpResponse.BodyHandlers.ofString());
+        } catch (InterruptedException e) {
+            logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
+            Thread.currentThread().interrupt();
+        } catch (IOException e) {
+            logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
+        }
 
         HttpClient client2 = HttpClient.newHttpClient();
         HttpRequest request2 = HttpRequest.newBuilder()
@@ -65,6 +71,38 @@ public class PublishNewTaskEventAdapter implements NewTaskEventPort {
         } catch (IOException e) {
             logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
         }
+
+        HttpClient client3 = HttpClient.newHttpClient();
+        HttpRequest request3 = HttpRequest.newBuilder()
+                .uri(URI.create(server3 + "/newtask/" + event.taskType.getValue()))
+                .GET()
+                .build();
+
+
+        try {
+            client3.send(request3, HttpResponse.BodyHandlers.ofString());
+        } catch (InterruptedException e) {
+            logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
+            Thread.currentThread().interrupt();
+        } catch (IOException e) {
+            logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
+        }
+
+        HttpClient client4 = HttpClient.newHttpClient();
+        HttpRequest request4 = HttpRequest.newBuilder()
+                .uri(URI.create(server4 + "/newtask/" + event.taskType.getValue()))
+                .GET()
+                .build();
+
+
+        try {
+            client4.send(request4, HttpResponse.BodyHandlers.ofString());
+        } catch (InterruptedException e) {
+            logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
+            Thread.currentThread().interrupt();
+        } catch (IOException e) {
+            logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
+        }
     }
 
 }

roster/src/main/java/ch/unisg/roster/roster/application/port/in/DeleteRosterItem.java

@@ -1,7 +1,5 @@
 package ch.unisg.roster.roster.application.port.in;
 
-import ch.unisg.roster.roster.domain.RosterItem;
-
 public interface DeleteRosterItem {
 
     void deleteRosterItem(String taskId);

roster/src/main/java/ch/unisg/roster/roster/application/port/in/DeleteTaskCommand.java

@@ -2,7 +2,6 @@ package ch.unisg.roster.roster.application.port.in;
 
 import javax.validation.constraints.NotNull;
 
-import ch.unisg.roster.roster.domain.valueobject.ExecutorType;
 import ch.unisg.common.validation.SelfValidating;
 import lombok.EqualsAndHashCode;
 import lombok.Value;
@@ -13,12 +12,8 @@ public class DeleteTaskCommand extends SelfValidating<ApplyForTaskCommand> {
     @NotNull
     private final String taskId;
 
-    @NotNull
-    private final ExecutorType taskType;
-
-    public DeleteTaskCommand(String taskId, ExecutorType taskType) {
+    public DeleteTaskCommand(String taskId) {
         this.taskId = taskId;
-        this.taskType = taskType;
         this.validateSelf();
     }
 }

roster/src/main/java/ch/unisg/roster/roster/application/port/in/NewTaskCommand.java

@@ -1,5 +1,7 @@
 package ch.unisg.roster.roster.application.port.in;
 
+import java.net.URI;
+
 import javax.validation.constraints.NotNull;
 
 import ch.unisg.roster.roster.domain.valueobject.ExecutorType;
@@ -17,11 +19,13 @@ public class NewTaskCommand extends SelfValidating<NewTaskCommand> {
     @NotNull
     private final ExecutorType taskType;
 
-    @NotNull
     private final String inputData;
 
-    public NewTaskCommand(String taskID, ExecutorType taskType, String inputData) {
+    private final String taskUri;
+
+    public NewTaskCommand(String taskID, String taskUri, ExecutorType taskType, String inputData) {
         this.taskID = taskID;
+        this.taskUri = taskUri;
         this.taskType = taskType;
         this.inputData = inputData;
         this.validateSelf();

roster/src/main/java/ch/unisg/roster/roster/application/port/out/LaunchAuctionEventPort.java

@@ -0,0 +1,8 @@
+package ch.unisg.roster.roster.application.port.out;
+
+import ch.unisg.roster.roster.domain.event.LaunchAuctionEvent;
+
+public interface LaunchAuctionEventPort {
+    
+    void launchAuctionEvent(LaunchAuctionEvent launchAuctionEvent);
+}

roster/src/main/java/ch/unisg/roster/roster/application/service/DeleteTaskService.java

@@ -21,7 +21,7 @@ public class DeleteTaskService implements DeleteTaskUseCase {
     @Override
     public boolean deleteTask(DeleteTaskCommand command) {
         Roster roster = Roster.getInstance();
-        return roster.deleteTask(command.getTaskId(), command.getTaskType());
+        return roster.deleteTask(command.getTaskId());
     }
 
 }

roster/src/main/java/ch/unisg/roster/roster/application/service/GetExecutorsService.java

@@ -0,0 +1,18 @@
+package ch.unisg.roster.roster.application.service;
+
+import ch.unisg.roster.roster.adapter.out.web.GetExecutorsInExecutorPoolWebAdapter;
+import ch.unisg.roster.roster.domain.ExecutorRegistry;
+
+// TODO should this implement a port in the Hexagonal architecture?
+public class GetExecutorsService {
+
+    public boolean getExecutorsFromExecutorPool(){
+        var getExecutorsAdapter = new GetExecutorsInExecutorPoolWebAdapter();
+        var executors = getExecutorsAdapter.getExecutorsInExecutorPool();
+        if(executors == null){
+            return false;
+        }
+        var executorRegistry = ExecutorRegistry.getInstance();
+        return executorRegistry.addExecutors(executors);
+    }
+}

roster/src/main/java/ch/unisg/roster/roster/application/service/NewTaskService.java

@@ -1,15 +1,19 @@
 package ch.unisg.roster.roster.application.service;
 
+import java.util.logging.Logger;
+
 import javax.transaction.Transactional;
 
 import org.springframework.stereotype.Component;
 
 import ch.unisg.roster.roster.application.port.in.NewTaskCommand;
 import ch.unisg.roster.roster.application.port.in.NewTaskUseCase;
+import ch.unisg.roster.roster.application.port.out.LaunchAuctionEventPort;
 import ch.unisg.roster.roster.application.port.out.NewTaskEventPort;
 import ch.unisg.roster.roster.domain.ExecutorRegistry;
 import ch.unisg.roster.roster.domain.Roster;
 import ch.unisg.roster.roster.domain.Task;
+import ch.unisg.roster.roster.domain.event.LaunchAuctionEvent;
 import ch.unisg.roster.roster.domain.event.NewTaskEvent;
 import lombok.RequiredArgsConstructor;
 
@@ -20,6 +24,10 @@ public class NewTaskService implements NewTaskUseCase {
 
     private final NewTaskEventPort newTaskEventPort;
 
+    private final LaunchAuctionEventPort launchAuctionEventPort;
+
+    Logger logger = Logger.getLogger(NewTaskService.class.getName());
+
     /**
     *   Checks if we can execute the give task, if yes the task gets added to the task queue and return true.
     *   If the task can not be executed by an internal or auction house executor, the method return false.
@@ -31,9 +39,15 @@ public class NewTaskService implements NewTaskUseCase {
         ExecutorRegistry executorRegistry = ExecutorRegistry.getInstance();
 
         if (!executorRegistry.containsTaskType(command.getTaskType())) {
-            return false;
+            logger.info("Roster | Task with type " + command.getTaskType() + "can not be handled internaly. Send to auction house!");
+            LaunchAuctionEvent launchAuctionEvent = new LaunchAuctionEvent( command.getTaskUri(),
+            command.getTaskType());
+            launchAuctionEventPort.launchAuctionEvent(launchAuctionEvent);
+            return true;
         }
 
+        logger.info("Roster | Task with type " + command.getTaskType() + " can be handled internaly.");
+
         Task task = new Task(command.getTaskID(), command.getTaskType(), command.getInputData());
 
         Roster.getInstance().addTaskToQueue(task);

roster/src/main/java/ch/unisg/roster/roster/domain/ExecutorInfo.java

@@ -5,6 +5,8 @@ import ch.unisg.common.valueobject.ExecutorURI;
 import lombok.Getter;
 import lombok.Setter;
 
+import java.net.URI;
+
 public class ExecutorInfo {
     @Getter
     @Setter
@@ -13,4 +15,9 @@ public class ExecutorInfo {
     @Getter
     @Setter
     private ExecutorType executorType;
+
+    public ExecutorInfo(String executorURI, String executorType){
+        this.executorURI = new ExecutorURI(executorURI);
+        this.executorType = new ExecutorType(executorType);
+    }
 }

roster/src/main/java/ch/unisg/roster/roster/domain/ExecutorRegistry.java

@@ -30,8 +30,8 @@ public class ExecutorRegistry {
     /**
      * Adds an executor to the registry for a given task type.
      *
-     * @param taskType the type of the task
-     * @param executorIdentifier the identifier of the executor (can be any string)
+     * @param executorType the type of the task
+     * @param executorURI the identifier of the executor (can be any string)
      * @return true unless a runtime exception occurs
      */
     public boolean addExecutor(ExecutorType executorType, ExecutorURI executorURI) {
@@ -44,6 +44,15 @@ public class ExecutorRegistry {
         return true;
     }
 
+    public boolean addExecutors(List<ExecutorInfo> executors){
+        for (var executor : executors) {
+            if(!addExecutor(executor.getExecutorType(), executor.getExecutorURI())){
+                return false;
+            }
+        }
+        return true;
+    }
+
     /**
      * Removes an executor from the registry. The executor is disassociated from all known task types.
      *

roster/src/main/java/ch/unisg/roster/roster/domain/Roster.java

@@ -76,9 +76,14 @@ public class Roster {
     *   Deletes a task if it is still in the queue.
     *   @return Whether the task got deleted or not
     **/
-    public boolean deleteTask(String taskID, ExecutorType taskType) {
+    public boolean deleteTask(String taskID) {
         logger.log(Level.INFO, "Try to delete task with id {0}", taskID);
-        return queues.get(taskType.getValue()).removeIf(task -> task.getTaskID().equalsIgnoreCase(taskID));
+        for(var listOfTasks : queues.entrySet()){
+            if(listOfTasks.getValue().removeIf(task -> task.getTaskID().equals(taskID))){
+                return true;
+            }
+        }
+        return false;
     }
 
     public void initialiseRoster(List<RosterItem> rosterItemList){

roster/src/main/java/ch/unisg/roster/roster/domain/Task.java

@@ -12,6 +12,9 @@ public class Task {
     @Getter
     private ExecutorType taskType;
 
+    @Getter
+    private String taskUri;
+
     @Getter
     @Setter
     private String inputData;
@@ -40,6 +43,12 @@ public class Task {
         this.inputData = inputData;
     }
 
+    public Task(String taskID, String taskUri, ExecutorType taskType) {
+        this.taskID = taskID;
+        this.taskUri = taskUri;
+        this.taskType = taskType;
+    }
+
     public Task() {}
 
 }

roster/src/main/java/ch/unisg/roster/roster/domain/event/LaunchAuctionEvent.java

@@ -0,0 +1,14 @@
+package ch.unisg.roster.roster.domain.event;
+
+import ch.unisg.roster.roster.domain.valueobject.ExecutorType;
+
+public class LaunchAuctionEvent {
+    public final String taskUri;
+    public final ExecutorType taskType;
+
+    public LaunchAuctionEvent(String taskUri, ExecutorType taskType) {
+        this.taskUri = taskUri;
+        this.taskType = taskType;
+    }
+    
+}

roster/src/main/resources/application.properties

@@ -1,8 +1,12 @@
 server.port=8082
 executor.robot.uri=http://127.0.0.1:8084
 executor.computation.uri=http://127.0.0.1:8085
+executor.humidity.uri=http://127.0.0.1:8087
+executor.humidity.demo.uri=http://127.0.0.1:8088
+auction.house.uri=http://127.0.0.1:8086
 task.list.uri=http://127.0.0.1:8081
-mqtt.broker.uri=tcp://localhost:1883
+# mqtt.broker.uri=tcp://localhost:1883
+mqtt.broker.uri=tcp://broker.hivemq.com
 
 spring.data.mongodb.uri=mongodb://root:password@localhost:27017/
 spring.data.mongodb.database=tapas-roster

roster/src/test/java/ch/unisg/roster/roster/domain/RosterTest.java

@@ -31,7 +31,7 @@ public class RosterTest {
         assertThat(task.getTaskType().getValue().toString()).isEqualTo("TEST-TYPE");
         assertThat(task.getTaskID()).isEqualTo("TEST-ID");
 
-        boolean empty_queue = roster.deleteTask("TEST-ID", new ExecutorType("TEST-TYPE"));
+        boolean empty_queue = roster.deleteTask("TEST-ID");
         // TODO test that the task was removed from the Queue similar to below --> I don't know if it actually gets deleted or not
         //assertThat(empty_queue).isEqualTo(true);
         //assertThat(queues.size()).isEqualTo(0);
@@ -44,8 +44,8 @@ public class RosterTest {
         queues.clear();
         roster.addTaskToQueue(new Task("TEST-ID", "TEST-TYPE"));
 
-        boolean test = roster.deleteTask("TEST-ID", new ExecutorType("TEST-TYPE"));
-
+        boolean test = roster.deleteTask("TEST-ID");
+        // TODO Fix assert for queue
         assertThat(test).isEqualTo(true);
         assertThat(queues.size()).isEqualTo(1);
     }

tapas-auction-house/pom.xml

@@ -69,6 +69,12 @@
 			<scope>runtime</scope>
 			<optional>true</optional>
 		</dependency>
+        <dependency>
+            <groupId>ch.unisg</groupId>
+            <artifactId>common</artifactId>
+            <version>0.0.1-SNAPSHOT</version>
+            <scope>compile</scope>
+        </dependency>
     </dependencies>
 
 	<build>

tapas-auction-house/src/main/java/ch/unisg/tapas/TapasAuctionHouseApplication.java

@@ -2,21 +2,21 @@ package ch.unisg.tapas;
 
 import ch.unisg.tapas.auctionhouse.adapter.common.clients.TapasMqttClient;
 import ch.unisg.tapas.auctionhouse.adapter.in.messaging.mqtt.AuctionEventsMqttDispatcher;
-import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscovery;
 import ch.unisg.tapas.auctionhouse.adapter.common.clients.WebSubSubscriber;
+import ch.unisg.tapas.auctionhouse.application.service.GetExecutorsService;
+import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscovery;
+import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
 import ch.unisg.tapas.common.AuctionHouseResourceDirectory;
-import ch.unisg.tapas.common.ConfigProperties;
+
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.eclipse.paho.client.mqttv3.MqttException;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.core.env.ConfigurableEnvironment;
 
 import java.net.URI;
-import java.util.List;
+import java.net.URISyntaxException;
 import java.util.concurrent.Executors;
 import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.TimeUnit;
@@ -28,34 +28,40 @@ import java.util.concurrent.TimeUnit;
 public class TapasAuctionHouseApplication {
     private static final Logger LOGGER = LogManager.getLogger(TapasAuctionHouseApplication.class);
 
-    public static String RESOURCE_DIRECTORY = "http://localhost:3500";
     public static String DEFAULT_MQTT_BROKER = "tcp://broker.hivemq.com:1883";
 
     private static ConfigurableEnvironment ENVIRONMENT;
 
-
     public static void main(String[] args) {
 		SpringApplication tapasAuctioneerApp = new SpringApplication(TapasAuctionHouseApplication.class);
         ENVIRONMENT = tapasAuctioneerApp.run(args).getEnvironment();
-
         // TODO Set start up of message services with config
 		// We will use these bootstrap methods in Week 6:
         bootstrapMarketplaceWithWebSub();
         bootstrapMarketplaceWithMqtt();
-
-        ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);
-        executor.scheduleAtFixedRate(crawlerRunnable, 30, 30, TimeUnit.SECONDS);
+        var getExecutorsService = new GetExecutorsService();
+        getExecutorsService.getExecutorsFromExecutorPool();
 	}
     /**
      * Discovers auction houses and subscribes to WebSub notifications
      */
 	private static void bootstrapMarketplaceWithWebSub() {
+        WebSubSubscriber subscriber = new WebSubSubscriber(ENVIRONMENT.getProperty("auction.house.uri"));
+
+        try {
+            subscriber.subscribeToAuctionHouseEndpoint(new URI("https://tapas-auction-house.86-119-34-242.nip.io/websub-discovery"));
+        } catch (URISyntaxException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+
         discoverAuctionHouseEndpoints();
 
-        // WebSubSubscriber subscriber = new WebSubSubscriber();
-
-        // for (String endpoint : auctionHouseEndpoints) {
-        //     subscriber.subscribeToAuctionHouseEndpoint(URI.create(endpoint));
+        // for (AuctionHouseDiscoveryInformation endpoint : AuctionHouseDiscovery.getInstance().getAuctionHouseDiscoveryList()) {
+        //     System.out.println(endpoint.getWebSubUri().getValue());
+        //     if (!endpoint.getWebSubUri().getValue().toString().equalsIgnoreCase("https://tapas-auction-house.86-119-35-40.nip.io/websub/auctions")) {
+        //         subscriber.subscribeToAuctionHouseEndpoint(endpoint.getWebSubUri().getValue());
+        //     }
         // }
     }
 
@@ -82,21 +88,25 @@ public class TapasAuctionHouseApplication {
     }
 
 	private static void discoverAuctionHouseEndpoints() {
+
         AuctionHouseResourceDirectory rd = new AuctionHouseResourceDirectory(
-            URI.create(RESOURCE_DIRECTORY)
+            URI.create(ENVIRONMENT.getProperty("discovery.endpoint.uri"))
         );
 
-	    AuctionHouseDiscovery.getInstance().addAuctionHouseDiscoveryInformation(rd.retrieveAuctionHouseEndpoints());
+        AuctionHouseDiscovery.getInstance().addAuctionHouseDiscoveryInformation(rd.retrieveAuctionHouseEndpoints());
+
+        // ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);
+        // executor.scheduleAtFixedRate(crawlerRunnable, 300, 300, TimeUnit.SECONDS);
     }
 
 
-    private static Runnable crawlerRunnable = new Runnable() {
-        public void run() {
-            AuctionHouseResourceDirectory rd = new AuctionHouseResourceDirectory(
-                URI.create(RESOURCE_DIRECTORY)
-            );
+    // private static Runnable crawlerRunnable = new Runnable() {
+    //     public void run() {
+    //         AuctionHouseResourceDirectory rd = new AuctionHouseResourceDirectory(
+    //             URI.create(ENVIRONMENT.getProperty("discovery.endpoint.uri"))
+    //         );
 
-	        AuctionHouseDiscovery.getInstance().addAuctionHouseDiscoveryInformation(rd.retrieveAuctionHouseEndpoints());
-        }
-    };
+	//         AuctionHouseDiscovery.getInstance().addAuctionHouseDiscoveryInformation(rd.retrieveAuctionHouseEndpoints());
+    //     }
+    // };
 }

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/common/clients/TapasMqttClient.java

@@ -50,7 +50,6 @@ public class TapasMqttClient {
         mqttClient = new org.eclipse.paho.client.mqttv3.MqttClient(brokerAddress, mqttClientId, new MemoryPersistence());
         mqttClient.connect();
         mqttClient.setCallback(messageReceivedCallback);
-
         subscribeToAllTopics();
     }
 

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/common/clients/WebSubSubscriber.java

@@ -2,9 +2,11 @@ package ch.unisg.tapas.auctionhouse.adapter.common.clients;
 
 import java.io.IOException;
 import java.net.URI;
+import java.net.URISyntaxException;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
+import java.util.HashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -18,25 +20,24 @@ import org.springframework.http.HttpStatus;
  */
 public class WebSubSubscriber {
 
-    // TODO get this somehow from properties file. But on clue how to do this with static variables
-    static String WEBSUB_HUB_ENDPOINT = "http://localhost:3000";
-    static String AUCTION_HOUSE_ENDPOINT = "http://localhost:8086";
-
     Logger logger = Logger.getLogger(WebSubSubscriber.class.getName());
 
-    public void subscribeToAuctionHouseEndpoint(URI endpoint) {
-        // TODO decide with other groups about auction house endpoint uri to discover websub topics
-        // and replace the hardcoded one with it
-        String topic = discoverWebSubTopic("http://localhost:3100/websub");
+    String AUCTION_HOUSE_ENDPOINT;
 
-        if (topic == null) {
+    public WebSubSubscriber(String AUCTION_HOUSE_ENDPOINT) {
+        this.AUCTION_HOUSE_ENDPOINT = AUCTION_HOUSE_ENDPOINT;
+    }
+
+    public void subscribeToAuctionHouseEndpoint(URI endpoint) {
+
+        HashMap<String, String> links = discoverWebSubTopic(endpoint);
+
+        if (links.isEmpty()) {
             return;
         }
 
-        subscribeToWebSub(topic);
+        subscribeToWebSub(links.get("hub"), links.get("self"));
 
-        // Shoudl be done :D
-        // TODO Subscribe to the auction house endpoint via WebSub:
         // 1. Send a request to the auction house in order to discover the WebSub hub to subscribe to.
         // The request URI should depend on the design of the Auction House HTTP API.
         // 2. Send a subscription request to the discovered WebSub hub to subscribe to events relevant
@@ -52,23 +53,30 @@ public class WebSubSubscriber {
         // - the implementation notes of the WebSub hub you are using to distribute events
     }
 
-    private String discoverWebSubTopic(String endpoint) {
+    private HashMap<String, String> discoverWebSubTopic(URI endpoint) {
         HttpClient client = HttpClient.newHttpClient();
         HttpRequest request = HttpRequest.newBuilder()
-                .uri(URI.create(endpoint))
+                .uri(endpoint)
                 .header("Content-Type", "application/json")
                 .GET()
                 .build();
 
+        HashMap<String, String> links = new HashMap<>();
 
         try {
             HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
             if (response.statusCode() == HttpStatus.OK.value()) {
-                // TODO decide with other groups about response structure and replace the hardcoded
-                // uri with response uri
-                JSONObject jsonObject = new JSONObject(response.body());
-                System.out.println(jsonObject);
-                return jsonObject.getString("topic");
+                for (String link : response.headers().allValues("link")) {
+                    if (link.contains("rel=\"hub\"")) {
+                        String hub = link.split(">")[0];
+                        links.put("hub", hub.substring(1));
+                    } else if(link.contains("rel=\"self\"")) {
+                        String self = link.split(">")[0];
+                        links.put("self", self.substring(1));
+                    }
+                    System.out.println(link);
+                }
+                // TODO check for HTML tags second if links are not present in headers
             } else {
                 logger.log(Level.SEVERE, "Could not find a websub uri");
             }
@@ -78,24 +86,29 @@ public class WebSubSubscriber {
         } catch (IOException e) {
             logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
         }
-        return null;
+        return links;
     }
 
-    private void subscribeToWebSub(String topic) {
+    private void subscribeToWebSub(String hub, String topic) {
         HttpClient client = HttpClient.newHttpClient();
 
-        String body = new JSONObject()
-        .put("hub.callback", AUCTION_HOUSE_ENDPOINT + "/auction-started")
-        .put("hub.mode", "subscribe")
-        .put("hub.topic", topic)
-        .put("hub.ws", false)
-        .toString();
+        URI hubURI;
+        try {
+            hubURI = new URI(hub);
+        } catch (URISyntaxException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+            return;
+        }
 
+        System.out.println("HUB: " + hub);
+        System.out.println("TOPIC: " + topic);
 
         HttpRequest request = HttpRequest.newBuilder()
-                .uri(URI.create(WEBSUB_HUB_ENDPOINT))
-                .header("Content-Type", "application/json")
-                .POST(HttpRequest.BodyPublishers.ofString(body))
+                .uri(hubURI)
+                .header("Content-Type", "application/x-www-form-urlencoded")
+                .POST(HttpRequest.BodyPublishers.ofString("hub.mode=subscribe&hub.callback=" + AUCTION_HOUSE_ENDPOINT +
+                "/auction-started/74c72c7f-2739-4124-aa35-a3225171a97c" + "&hub.topic=" + topic))
                 .build();
 
 

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/common/formats/AuctionJsonRepresentation.java

@@ -3,12 +3,16 @@ package ch.unisg.tapas.auctionhouse.adapter.common.formats;
 import ch.unisg.tapas.auctionhouse.domain.Auction;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import lombok.Getter;
 import lombok.Setter;
 
+import java.net.URI;
 import java.sql.Timestamp;
+import java.text.ParseException;
 import java.text.SimpleDateFormat;
+import java.util.Date;
 
 /**
  * Used to expose a representation of the state of an auction through an interface. This class is
@@ -60,4 +64,28 @@ public class AuctionJsonRepresentation {
         mapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));
         return mapper.writeValueAsString(representation);
     }
+
+    public static Auction deserialize(String auctionJson) throws JsonProcessingException {
+        ObjectMapper objectMapper = new ObjectMapper();
+        JsonNode jsonNode = objectMapper.readTree(auctionJson);
+        Auction.AuctionId auctionId = new Auction.AuctionId(jsonNode.get("auctionId").asText());
+        Auction.AuctionHouseUri auctionHouseUri = new Auction.AuctionHouseUri(URI.create(jsonNode.get("auctionHouseUri").asText()));
+        Auction.AuctionedTaskUri taskUri = new Auction.AuctionedTaskUri(URI.create(jsonNode.get("taskUri").asText()));
+        Auction.AuctionedTaskType taskType = new Auction.AuctionedTaskType(jsonNode.get("taskType").asText());
+        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+        Date parsedDate;
+        try {
+            parsedDate = dateFormat.parse(jsonNode.get("deadline").toString());
+            Timestamp timestamp = new java.sql.Timestamp(parsedDate.getTime());
+        Auction.AuctionDeadline deadline  = new Auction.AuctionDeadline(timestamp);
+
+        Auction auction = new Auction(auctionId, auctionHouseUri, taskUri, taskType, deadline);
+        return auction;
+        } catch (ParseException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+        return null;
+
+    }
 }

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/in/messaging/mqtt/ExecutorAddedEventListenerMqttAdapter.java

@@ -4,6 +4,7 @@ import ch.unisg.tapas.auctionhouse.application.handler.ExecutorAddedHandler;
 import ch.unisg.tapas.auctionhouse.application.port.in.ExecutorAddedEvent;
 import ch.unisg.tapas.auctionhouse.domain.Auction;
 import ch.unisg.tapas.auctionhouse.domain.ExecutorRegistry;
+import ch.unisg.common.valueobject.ExecutorURI;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
@@ -34,7 +35,7 @@ public class ExecutorAddedEventListenerMqttAdapter extends AuctionEventMqttListe
             String executorTaskType = data.get("executorTaskType").asText();
 
             ExecutorAddedEvent executorAddedEvent = new ExecutorAddedEvent(
-                new ExecutorRegistry.ExecutorUri(URI.create(executorUri)),
+                new ExecutorURI(executorUri),
                 new Auction.AuctionedTaskType(executorTaskType)
             );
 

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/in/messaging/mqtt/ExecutorRemovedEventListenerMqttAdapter.java

@@ -2,6 +2,7 @@ package ch.unisg.tapas.auctionhouse.adapter.in.messaging.mqtt;
 
 import ch.unisg.tapas.auctionhouse.application.handler.ExecutorRemovedHandler;
 import ch.unisg.tapas.auctionhouse.application.port.in.ExecutorRemovedEvent;
+import ch.unisg.common.valueobject.ExecutorURI;
 import ch.unisg.tapas.auctionhouse.domain.Auction;
 import ch.unisg.tapas.auctionhouse.domain.ExecutorRegistry;
 import com.fasterxml.jackson.core.JsonProcessingException;
@@ -33,7 +34,7 @@ public class ExecutorRemovedEventListenerMqttAdapter extends AuctionEventMqttLis
             String executorUri = data.get("executorUri").asText();
 
             ExecutorRemovedEvent executorRemovedEvent = new ExecutorRemovedEvent(
-                new ExecutorRegistry.ExecutorUri(URI.create(executorUri))
+                new ExecutorURI(executorUri)
             );
 
             ExecutorRemovedHandler newExecutorHandler = new ExecutorRemovedHandler();

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/in/messaging/mqtt/ExternalAuctionStartedEventListenerMqttAdapter.java

@@ -13,26 +13,27 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.eclipse.paho.client.mqttv3.MqttMessage;
-import org.springframework.beans.factory.annotation.Value;
 
 import java.io.IOException;
 import java.net.URI;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
-import java.sql.Timestamp;
-
 public class ExternalAuctionStartedEventListenerMqttAdapter extends AuctionEventMqttListener{
     private static final Logger LOGGER = LogManager.getLogger(ExternalAuctionStartedEventListenerMqttAdapter.class);
 
     String auctionHouseURI = "https://tapas-auction-house.86-119-35-40.nip.io/";
+    // String auctionHouseURI = "http://a888-77-59-152-182.eu.ngrok.io";
 
     String taskListURI = "https://tapas-tasks.86-119-35-40.nip.io";
+    // String taskListURI = "http://e021-77-59-152-182.ngrok.io";
 
     @Override
     public boolean handleEvent(MqttMessage message){
         String payload = new String(message.getPayload());
 
+        System.out.println("New auction");
+
         try {
             // Note: this message representation is provided only as an example. You should use a
             // representation that makes sense in the context of your application.
@@ -46,6 +47,7 @@ public class ExternalAuctionStartedEventListenerMqttAdapter extends AuctionEvent
             String deadline = data.get("deadline").asText();
 
             var capable = ExecutorRegistry.getInstance().containsTaskType(new Auction.AuctionedTaskType(taskType));
+            System.out.println("Capable: " + capable);
             // TODO check deadline
             if(capable){
                 var bid = new Bid(

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/in/messaging/websub/AuctionStartedEventListenerWebSubAdapter.java

@@ -1,20 +1,31 @@
 package ch.unisg.tapas.auctionhouse.adapter.in.messaging.websub;
 
 import ch.unisg.tapas.auctionhouse.adapter.common.formats.AuctionJsonRepresentation;
+import ch.unisg.tapas.auctionhouse.adapter.common.formats.BidJsonRepresentation;
 import ch.unisg.tapas.auctionhouse.application.handler.AuctionStartedHandler;
 import ch.unisg.tapas.auctionhouse.application.port.in.AuctionStartedEvent;
 import ch.unisg.tapas.auctionhouse.domain.Auction;
+import ch.unisg.tapas.auctionhouse.domain.Bid;
 import ch.unisg.tapas.auctionhouse.domain.Auction.AuctionDeadline;
 import ch.unisg.tapas.auctionhouse.domain.Auction.AuctionHouseUri;
 import ch.unisg.tapas.auctionhouse.domain.Auction.AuctionId;
 import ch.unisg.tapas.auctionhouse.domain.Auction.AuctionedTaskType;
 import ch.unisg.tapas.auctionhouse.domain.Auction.AuctionedTaskUri;
 
+import java.io.IOException;
 import java.net.URI;
 import java.net.URISyntaxException;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.security.Timestamp;
 import java.util.Collection;
+import java.util.Date;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
 
 import org.json.JSONArray;
+import org.json.JSONObject;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;
@@ -34,19 +45,88 @@ public class AuctionStartedEventListenerWebSubAdapter {
     *   @return 200 OK
      * @throws URISyntaxException
     **/
-    @PostMapping(path = "/auction-started")
-    public ResponseEntity<Void> handleExecutorAddedEvent(@RequestBody Collection<AuctionJsonRepresentation> payload) throws URISyntaxException {
+    // TODO generate a new capability ID instead of using a hardcoded one.
+    @PostMapping(path = "/auction-started/74c72c7f-2739-4124-aa35-a3225171a97c")
+    public ResponseEntity<Void> handleExecutorAddedEvent(@RequestBody String payload) throws URISyntaxException {
 
-        for (AuctionJsonRepresentation auction : payload) {
-            auctionStartedHandler.handleAuctionStartedEvent(
-                new AuctionStartedEvent(
-                    new Auction(new AuctionId(auction.getAuctionId()),
-                    new AuctionHouseUri(new URI(auction.getAuctionHouseUri())),
-                    new AuctionedTaskUri(new URI(auction.getTaskUri())),
-                    new AuctionedTaskType(auction.getTaskType()),
-                    new AuctionDeadline(auction.getDeadline()))
-                ));
-        }
+        System.out.println("new auctions :O");
+        System.out.println(payload);
+
+
+        JSONArray auctions = new JSONArray(payload);
+        if (auctions.length() > 0) {
+            JSONObject auction = auctions.getJSONObject(0);
+            System.out.print(auction);
+            // try {
+            //     System.out.println(auction.getString("deadline"));
+            //     System.out.println(AuctionJsonRepresentation.deserialize(auction.toString()));
+
+            //     auctionStartedHandler.handleAuctionStartedEvent(
+            //         new AuctionStartedEvent(AuctionJsonRepresentation.deserialize(auction.toString())));
+            // } catch (JsonProcessingException e) {
+            //     // TODO Auto-generated catch block
+            //     e.printStackTrace();
+            // }
+
+
+        String auctionHouseURI = "https://tapas-auction-house.86-119-35-40.nip.io/";
+        // String auctionHouseURI = "http://b311-130-82-247-153.eu.ngrok.io";
+
+        String taskListURI = "https://tapas-tasks.86-119-35-40.nip.io";
+        // String taskListURI = "http://c64f-130-82-247-153.ngrok.io";
+
+        // TODO Sanitize URIs
+        String auctionId = auction.getString("auctionId");
+        String auctionHouseUri = auction.getString("auctionHouseUri");
+        String taskUri = auction.getString("taskUri");
+        String taskType = auction.getString("taskType");
+        String deadline = auction.getString("deadline");
+
+            var bid = new Bid(
+                    new Auction.AuctionId(auctionId),
+                    new Bid.BidderName("Group-1"),
+                    new Bid.BidderAuctionHouseUri(URI.create(auctionHouseURI)),
+                    new Bid.BidderTaskListUri(URI.create(taskListURI))
+                );
+
+                String body;
+                try {
+                    body = BidJsonRepresentation.serialize(bid);
+                    //LOGGER.info(body);
+                var postURI = URI.create(auctionHouseUri + "/bid");
+                HttpRequest postRequest = HttpRequest.newBuilder()
+                    .uri(postURI)
+                    .header("Content-Type", BidJsonRepresentation.MEDIA_TYPE)
+                    .POST(HttpRequest.BodyPublishers.ofString(body))
+                    .build();
+
+                HttpClient client = HttpClient.newHttpClient();
+                var postResponse = client.send(postRequest, HttpResponse.BodyHandlers.ofString());
+                } catch (JsonProcessingException e) {
+                    // TODO Auto-generated catch block
+                    e.printStackTrace();
+                } catch (IOException e) {
+                    // TODO Auto-generated catch block
+                    e.printStackTrace();
+                } catch (InterruptedException e) {
+                    // TODO Auto-generated catch block
+                    e.printStackTrace();
+                }
+
+
+                //LOGGER.info(postResponse.statusCode());
+        };
+
+        // for (JSONObject auction : auctions) {
+            // auctionStartedHandler.handleAuctionStartedEvent(
+            //     new AuctionStartedEvent(
+            //         new Auction(new AuctionId(auction.getAuctionId()),
+            //         new AuctionHouseUri(new URI(auction.getAuctionHouseUri())),
+            //         new AuctionedTaskUri(new URI(auction.getTaskUri())),
+            //         new AuctionedTaskType(auction.getTaskType()),
+            //         new AuctionDeadline(auction.getDeadline()))
+            //     ));
+        // }
 
         return new ResponseEntity<>(HttpStatus.OK);
     }

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/in/messaging/websub/DiscoverWebSubAdapter.java

@@ -0,0 +1,33 @@
+package ch.unisg.tapas.auctionhouse.adapter.in.messaging.websub;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.*;
+
+/**
+ * This class is a template for handling auction started events received via WebSub
+ */
+@RestController
+public class DiscoverWebSubAdapter {
+
+    @Value("${websub.hub.uri}")
+    private String webSubHubUri;
+
+    @Value("${auction.house.uri}")
+    private String auctionHouseUri;
+
+    /**
+    *   Controller to discover our websub topic
+    *   @return 200 OK
+    **/
+    @GetMapping(path = "/websub/auctions")
+    public ResponseEntity<String> handleDiscoverWebSubAuction() {
+
+        HttpHeaders header = new HttpHeaders();
+        header.add("link", "<" + auctionHouseUri + "/auctions/>; rel=\"self\"");
+        header.add("link", "<" + webSubHubUri + ">; rel=\"hub\"");
+
+        return ResponseEntity.ok().headers(header).body("");
+    }
+}

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/in/messaging/websub/ValidateIntentWebSubAdapter.java

@@ -13,21 +13,9 @@ import org.springframework.web.bind.annotation.*;
 @RestController
 public class ValidateIntentWebSubAdapter {
 
-    @Value("${application.environment}")
-    private String environment;
-
-    @GetMapping(path = "/auction-started")
+    // TODO generate a new capability ID instead of using a hardcoded one.
+    @GetMapping(path = "/auction-started/74c72c7f-2739-4124-aa35-a3225171a97c")
     public ResponseEntity<String> validateIntent(@RequestParam("hub.challenge") String challenge) {
-        // Different implementation depending on local development or production
-        if (environment.equalsIgnoreCase("development")) {
-            HttpHeaders headers = new HttpHeaders();
-            headers.add("Content-Type", "application/json");
-            String body = new JSONObject()
-                .put("hub.challenge", challenge)
-                .toString();
-            return new ResponseEntity<>(body, headers, HttpStatus.OK);
-        } else {
-            return new ResponseEntity<>(challenge, HttpStatus.OK);
-        }
+        return new ResponseEntity<>(challenge, HttpStatus.OK);
     }
 }

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/in/web/AuctionHouseDiscoveryWebController.java

@@ -30,7 +30,7 @@ public class AuctionHouseDiscoveryWebController {
         this.auctionHouseDiscoveryUseCase = auctionHouseDiscoveryUseCase;
     }
 
-    @GetMapping(path="/discovery/", consumes = AuctionHouseDiscoveryJsonRepresentation.MEDIA_TYPE)
+    @GetMapping(path="/discovery/"/*,  consumes = AuctionHouseDiscoveryJsonRepresentation.MEDIA_TYPE */)
     public ResponseEntity<String> auctionHouseDiscovery() {
         List<AuctionHouseDiscoveryInformation> auctionHouseDiscoveryInformation = auctionHouseDiscoveryUseCase.auctionHouseDiscovery();
 

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/in/web/WinningBidWebController.java

@@ -1,11 +1,6 @@
 package ch.unisg.tapas.auctionhouse.adapter.in.web;
 
-import ch.unisg.tapas.auctionhouse.adapter.common.formats.AuctionJsonRepresentation;
-import ch.unisg.tapas.auctionhouse.adapter.common.formats.BidJsonRepresentation;
 import ch.unisg.tapas.auctionhouse.adapter.common.formats.TaskJsonRepresentation;
-import ch.unisg.tapas.auctionhouse.adapter.in.messaging.mqtt.ExternalAuctionStartedEventListenerMqttAdapter;
-import ch.unisg.tapas.auctionhouse.domain.Task;
-import com.fasterxml.jackson.core.JsonProcessingException;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.springframework.beans.factory.annotation.Value;
@@ -32,10 +27,12 @@ public class WinningBidWebController {
 
     @PostMapping(path = "/taskwinner", consumes = TaskJsonRepresentation.MEDIA_TYPE)
     public ResponseEntity<String> winningBid(@RequestBody TaskJsonRepresentation payload){
+        LOGGER.info("New Task Winner");
         try {
             var body = payload.serialize();
-            LOGGER.info(body);
-            var postURI = URI.create("https://tapas-tasks.86-119-35-40.nip.io/tasks/");
+            LOGGER.info("Task Winner body: " + body);
+            LOGGER.info("Task Winner taskListURI: " + taskListURI);
+            var postURI = URI.create(taskListURI + "/tasks/");
             HttpRequest postRequest = HttpRequest.newBuilder()
                 .uri(postURI)
                 .header("Content-Type", TaskJsonRepresentation.MEDIA_TYPE)
@@ -45,11 +42,11 @@ public class WinningBidWebController {
             HttpClient client = HttpClient.newHttpClient();
             var postResponse = client.send(postRequest, HttpResponse.BodyHandlers.ofString());
 
-            LOGGER.info(postResponse.statusCode());
+            LOGGER.info("Create task internally with status code: " + postResponse.statusCode());
 
 
             HttpHeaders responseHeaders = new HttpHeaders();
-            return new ResponseEntity<>(responseHeaders, HttpStatus.NO_CONTENT);
+            return new ResponseEntity<>(responseHeaders, HttpStatus.ACCEPTED);
         }
      catch (
          IOException | InterruptedException e) {

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/out/messaging/mqtt/PublishAuctionStartedEventMqttAdapter.java

@@ -6,9 +6,10 @@ import ch.unisg.tapas.auctionhouse.adapter.in.messaging.mqtt.AuctionEventsMqttDi
 import ch.unisg.tapas.auctionhouse.application.port.out.AuctionStartedEventPort;
 import ch.unisg.tapas.auctionhouse.domain.AuctionStartedEvent;
 import ch.unisg.tapas.common.ConfigProperties;
+
+import java.util.logging.Logger;
+
 import com.fasterxml.jackson.core.JsonProcessingException;
-import org.apache.logging.log4j.LogManager;
-import org.apache.logging.log4j.Logger;
 import org.eclipse.paho.client.mqttv3.MqttException;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Primary;
@@ -18,19 +19,20 @@ import org.springframework.stereotype.Component;
 @Primary
 public class PublishAuctionStartedEventMqttAdapter implements AuctionStartedEventPort {
 
-    private static final Logger LOGGER = LogManager.getLogger(PublishAuctionStartedEventMqttAdapter.class);
+    Logger logger = Logger.getLogger(PublishAuctionStartedEventMqttAdapter.class.getName());
 
     @Autowired
     private ConfigProperties config;
 
     @Override
     public void publishAuctionStartedEvent(AuctionStartedEvent event) {
+        logger.info("AuctionHouse | Publish auction started over Mqtt!");
         try{
             var mqttClient = TapasMqttClient.getInstance(config.getMqttBrokerUri().toString(), new AuctionEventsMqttDispatcher());
             mqttClient.publishMessage("ch/unisg/tapas/auctions", AuctionJsonRepresentation.serialize(event.getAuction()));
         }
         catch (MqttException | JsonProcessingException e){
-            LOGGER.error(e.getMessage(), e);
+            logger.severe(e.getMessage());
         }
     }
 }

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/out/messaging/websub/PublishAuctionStartedEventWebSubAdapter.java

@@ -1,41 +1,27 @@
 package ch.unisg.tapas.auctionhouse.adapter.out.messaging.websub;
 
 import ch.unisg.tapas.auctionhouse.application.port.out.AuctionStartedEventPort;
-import ch.unisg.tapas.auctionhouse.domain.Auction;
 import ch.unisg.tapas.auctionhouse.domain.AuctionStartedEvent;
-import ch.unisg.tapas.common.ConfigProperties;
 
-import org.json.JSONObject;
-import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Primary;
-import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Component;
 
 import java.io.IOException;
 import java.net.URI;
-import java.net.URLEncoder;
 import java.net.http.HttpClient;
 import java.net.http.HttpRequest;
 import java.net.http.HttpResponse;
-import java.nio.charset.StandardCharsets;
-import java.util.HashMap;
-import java.util.Map;
 import java.util.logging.Level;
 import java.util.logging.Logger;
-import java.util.stream.Collectors;
 
 /**
  * This class is a template for publishing auction started events via WebSub.
  */
 @Component
+// @Primary
 public class PublishAuctionStartedEventWebSubAdapter implements AuctionStartedEventPort {
-    // You can use this object to retrieve properties from application.properties, e.g. the
-    // WebSub hub publish endpoint, etc.
-    @Autowired
-    private ConfigProperties config;
-
-    @Value("${auctionhouse.uri}")
+    @Value("${auction.house.uri}")
     private String auctionHouseUri;
 
     @Value("${websub.hub.uri}")
@@ -45,23 +31,23 @@ public class PublishAuctionStartedEventWebSubAdapter implements AuctionStartedEv
 
     @Override
     public void publishAuctionStartedEvent(AuctionStartedEvent event) {
+        logger.info("AuctionHouse | Publish auction started over WebSub!");
+        logger.info("AuctionHouse | AuctionHouseURI: " + auctionHouseUri + " WebSubHubUri: " + webSubHubUri);
+
         HttpClient client = HttpClient.newHttpClient();
 
-        String body = new JSONObject()
-        .put("hub.url", auctionHouseUri + "/auctions")
-        .put("hub.mode", "publish")
-        .toString();
-
+        String body = "hub.url=" + auctionHouseUri + "/auctions/&hub.mode=publish";
 
         HttpRequest request = HttpRequest.newBuilder()
                 .uri(URI.create(webSubHubUri))
-                .header("Content-Type", "application/json")
+                .header("Content-Type", "application/x-www-form-urlencoded")
                 .POST(HttpRequest.BodyPublishers.ofString(body))
                 .build();
 
 
         try {
             client.send(request, HttpResponse.BodyHandlers.ofString());
+            logger.info("AuctionHouse | Publish auction over WebSub successfuly!");
         } catch (InterruptedException e) {
             logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
             Thread.currentThread().interrupt();

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/out/web/AuctionHouseDiscoveryHttpAdapter.java

@@ -6,6 +6,7 @@ import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.json.JSONArray;
 import org.json.JSONObject;
+import org.springframework.http.HttpStatus;
 
 import java.io.IOException;
 import java.net.URI;
@@ -30,27 +31,34 @@ public class AuctionHouseDiscoveryHttpAdapter implements AuctionHouseDiscoveryPo
                 .uri(auctionHouseURI)
                 .GET()
                 .build();
-            var response = client.send(request, HttpResponse.BodyHandlers.ofString());
-            LOGGER.info(response.body());
-            var responseBody = new JSONObject(response.body());
+            HttpResponse response = client.send(request, HttpResponse.BodyHandlers.ofString());
+            LOGGER.info("Response status code: " + response.statusCode());
+            LOGGER.info("Response body:" + response.body());
 
-            var arrayOfInformation = responseBody.getJSONArray("auctionHouseInfo");
-            var returnList = new LinkedList<AuctionHouseDiscoveryInformation>();
+            if (response.statusCode() == HttpStatus.OK.value() || response.statusCode() == HttpStatus.FOUND.value()) {
+                var responseBody = new JSONObject(response.body().toString());
+                // new JSON
 
-            for(int i = 0; i < arrayOfInformation.length(); i++)
-            {
-                var informationJSON = arrayOfInformation.getJSONObject(i);
-                var information = new AuctionHouseDiscoveryInformation(
-                    new AuctionHouseDiscoveryInformation.AuctionHouseUri(URI.create(informationJSON.getString("auctionHouseURI"))),
-                    new AuctionHouseDiscoveryInformation.WebSubUri(URI.create(informationJSON.getString("webSubURI"))),
-                    new AuctionHouseDiscoveryInformation.TaskTypes(getTaskTypes(informationJSON.getJSONArray("taskTypes"))),
-                    new AuctionHouseDiscoveryInformation.TimeStamp(Timestamp.valueOf(informationJSON.getString("timeStamp"))),
-                    new AuctionHouseDiscoveryInformation.GroupName(informationJSON.getString("groupName"))
-                );
-                returnList.add(information);
+                System.out.print(responseBody);
+                var arrayOfInformation = responseBody.getJSONArray("auctionHouseInfo");
+                var returnList = new LinkedList<AuctionHouseDiscoveryInformation>();
+
+                for(int i = 0; i < arrayOfInformation.length(); i++)
+                {
+                    var informationJSON = arrayOfInformation.getJSONObject(i);
+                    var information = new AuctionHouseDiscoveryInformation(
+                        new AuctionHouseDiscoveryInformation.AuctionHouseUri(URI.create(informationJSON.getString("auctionHouseUri"))),
+                        new AuctionHouseDiscoveryInformation.WebSubUri(URI.create(informationJSON.getString("webSubUri"))),
+                        new AuctionHouseDiscoveryInformation.TaskTypes(getTaskTypes(informationJSON.getJSONArray("taskTypes"))),
+                        new AuctionHouseDiscoveryInformation.TimeStamp(Timestamp.valueOf(informationJSON.getString("timeStamp"))),
+                        new AuctionHouseDiscoveryInformation.GroupName(informationJSON.getString("groupName"))
+                    );
+                    returnList.add(information);
+                }
+
+                return returnList;
             }
-
-            return returnList;
+            return Collections.<AuctionHouseDiscoveryInformation>emptyList();
 
         } catch (IOException e) {
             e.printStackTrace();

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/out/web/AuctionWonEventHttpAdapter.java

@@ -1,7 +1,6 @@
 package ch.unisg.tapas.auctionhouse.adapter.out.web;
 
 import ch.unisg.tapas.auctionhouse.adapter.common.formats.TaskJsonRepresentation;
-import ch.unisg.tapas.auctionhouse.application.handler.AuctionStartedHandler;
 import ch.unisg.tapas.auctionhouse.application.port.out.AuctionWonEventPort;
 import ch.unisg.tapas.auctionhouse.domain.AuctionRegistry;
 import ch.unisg.tapas.auctionhouse.domain.AuctionWonEvent;
@@ -11,6 +10,7 @@ import org.apache.logging.log4j.Logger;
 import org.json.JSONObject;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Primary;
+import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Component;
 
 import java.io.IOException;
@@ -43,7 +43,12 @@ public class AuctionWonEventHttpAdapter implements AuctionWonEventPort {
                 .uri(auction.get().getTaskUri().getValue())
                 .GET()
                 .build();
+
             var response = client.send(request, HttpResponse.BodyHandlers.ofString());
+            if (response.statusCode() != HttpStatus.OK.value()) {
+                LOGGER.info("AuctionHouse | Could not get task from tasklist. Something went wrong...");
+                return;
+            }
             LOGGER.info(response.body());
             JSONObject responseBody = new JSONObject(response.body());
 

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/adapter/out/web/GetExecutorsFromExecutorPoolWebAdapter.java

@@ -0,0 +1,60 @@
+package ch.unisg.tapas.auctionhouse.adapter.out.web;
+
+import ch.unisg.tapas.auctionhouse.domain.ExecutorInfo;
+import org.apache.logging.log4j.Level;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+import org.json.JSONArray;
+import org.springframework.http.HttpStatus;
+
+import java.io.IOException;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.util.LinkedList;
+import java.util.List;
+
+public class GetExecutorsFromExecutorPoolWebAdapter {
+    private static final Logger LOGGER = LogManager.getLogger(GetExecutorsFromExecutorPoolWebAdapter.class);
+
+    // TODO get from config
+    String server = "http://localhost:8083";
+
+    public List<ExecutorInfo> getExecutorsInExecutorPool(){
+        var client = HttpClient.newHttpClient();
+        var request = HttpRequest.newBuilder()
+            .uri(URI.create(server + "/executor-pool/GetAllExecutorsInExecutorPool"))
+            .GET()
+            .build();
+
+        try {
+            var response = client.send(request, HttpResponse.BodyHandlers.ofString());
+
+            if(response.statusCode() != HttpStatus.OK.value()){
+                LOGGER.log(Level.INFO, "Could not get executors from Executor Pool");
+                return null;
+            }
+
+            LOGGER.log(Level.INFO, "Executors received from ExecutorPool: " + response.body());
+
+            var jsonExecutorArray = new JSONArray(response.body());
+            var executorList = new LinkedList<ExecutorInfo>();
+
+            for(int i = 0; i < jsonExecutorArray.length(); i++){
+                var jsonExecutorObject = jsonExecutorArray.getJSONObject(i);
+                var executorURI = jsonExecutorObject.getString("executorUri");
+                var executorType = jsonExecutorObject.getString("executorTaskType");
+                executorList.add(new ExecutorInfo(executorURI, executorType));
+            }
+
+            return executorList;
+        } catch (IOException e) {
+            e.printStackTrace();
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+
+        return null;
+    }
+}

tapas-auction-house/src/main/java/ch/unisg/tapas/auctionhouse/application/port/in/ExecutorAddedEvent.java

@@ -2,7 +2,7 @@ package ch.unisg.tapas.auctionhouse.application.port.in;
 
 import ch.unisg.tapas.auctionhouse.domain.Auction.AuctionedTaskType;
 import ch.unisg.tapas.auctionhouse.domain.ExecutorRegistry;
-import ch.unisg.tapas.auctionhouse.domain.ExecutorRegistry.ExecutorUri;
+import ch.unisg.common.valueobject.ExecutorURI;
 import ch.unisg.tapas.common.SelfValidating;
 import lombok.Value;
 
@@ -14,7 +14,7 @@ import javax.validation.constraints.NotNull;
 @Value
 public class ExecutorAddedEvent extends SelfValidating<ExecutorAddedEvent> {
     @NotNull
-    private final ExecutorRegistry.ExecutorUri executorUri;
+    private final ExecutorURI executorUri;
 
     @NotNull
     private final AuctionedTaskType taskType;
@@ -24,7 +24,7 @@ public class ExecutorAddedEvent extends SelfValidating<ExecutorAddedEvent> {
      *
      * @param executorUri the identifier of the executor that was added to this TAPAS application
      */
-    public ExecutorAddedEvent(ExecutorUri executorUri, AuctionedTaskType taskType) {
+    public ExecutorAddedEvent(ExecutorURI executorUri, AuctionedTaskType taskType) {
         this.executorUri = executorUri;
         this.taskType = taskType;