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
+#

doc/architecture/decisions/0002-seperate-service-for-executor-pool.md

@@ -0,0 +1,21 @@
+# 2. Seperate service for Executor Pool
+
+Date: 2021-11-21
+
+## Status
+
+Accepted
+
+## Context
+
+The Executor Pool has to keep track of which Executors are online and what task types they can execute. The Roster keeps track of tasks that need to be executed and assigns Executors to tasks. The Executor Pool functionalty could be implemented in a seperate service or as a part of the Roster.
+
+## Decision
+
+The executor pool will be implemented as a seperate service. (TODO decision might change. Need to reevaluate)
+
+TODO explain why.
+
+## Consequences
+
+TODO

doc/architecture/decisions/0002-seperate-service-for-executors-and-pool.md

@@ -1,23 +0,0 @@
-# 2. Seperate service for Executors and Executor Pool
-
-Date: 2021-11-21
-
-## Status
-
-Accepted
-
-## Context
-
-The executor pool has a complete list of all executors and knows if they are available or not, executors can execute tasks that match their type. The executors can therefore be part of the executor pool service, or each executor is a standalone service, as well as the executor pool.
-
-## Decision
-
-We will use a separate microservice for each executor and one service for the executor pool.
-Having the executor pool and the executors as separate services would increase fault tolerance. If the executor pool goes down, the executors would stay online and execute their tasks without being affected by the executor pool’s outage. Likewise, if an executor goes down it does not impact other executors or the executor pool.
-Different executors can have different execution times and a different load. This means the executors scale differently. Thus, we need a separate service for each executor.
-Executors of different kinds will also scale differently than the executor pool and new executors of new types might be added at some point, further increasing the need for separate services to guarantee scalability and evolvability.
-New executors will be added/removed during runtime. Therefore, we need a high extensibility.
-
-## Consequences
-
-Executors will be added/removed quite frequently, making the deployment of the system easier and less risk-prone if each executor is a separate service, also separated from the executor pool, which just keeps track of the executors and their status. However, having these separate services, the complexity might increase, and the testability of the system will decrease.

doc/architecture/decisions/0008-switch-to-an-event-driven-microservices-architecture.md

@@ -6,7 +6,7 @@ Date: 2021-11-21
 
 Proposed
 
-Supercedes [5. Event driven communication](0005-event-driven-communication.md)
+Supercedes [5. Event driven communication](0005-event-driven-communication.md) TODO Fix this. Should only supercede it if this has been accepted. This should also subercede 0013 - Microservice Architecture if accepted.
 
 ## Context
 

doc/architecture/decisions/0012-seperate-service-for-each-executor.md

@@ -0,0 +1,27 @@
+# 12. seperate service for each executor
+
+Date: 2021-11-21
+
+## Status
+
+Accepted
+
+## Context
+
+Executors must receive tasks of different types and execute them. The executors could either all be implemented within one service or as multiple services, one for each type of executor.
+
+## Decision
+
+We will have a seperate service for each type of executor.
+
+Firstly, execution time differs significantly between task types. Therefore, having seperate services will allow the executos to scale differently based on their tasks' specific needs.
+
+Secondly, the systems functioning should not be disrupted in case an Executor fails. Having each type of executor in a seperate service will increase fault tolerance in this regard.
+
+Lastly, extensibilty is one of the systems most important non-functional requirement and providers of executors need to be able to easily add executors to the executor pool. These factors are also positively impacted by having seperate services. 
+
+There should not be any shared data between the executors. Additionally, there should be no flow of information between them. Thus, there should be no issues due to workflow and data concerns due to this decision.
+
+## Consequences
+
+Executors share a lot of functionality when it comes to connecting to the rest of the system. Therefore, this decision means that we will either have to duplicate the code that implements the common functionality, or we have to have a way to share the code (e.g. through a common library)

doc/architecture/decisions/0013-microservice-architecture.md

@@ -0,0 +1,23 @@
+# 13. microservice architecture
+
+Date: 2021-12-02
+
+## Status
+
+Accepted
+
+## Context
+
+The system is made up of five distinct bounded contexts, namely the Task Domain, the Roster Domain, the Executor Pool Domain, the Executor Domain, and the Auction Domain. The way that these bounded contexts function together to fulfil the system requirements can be based on many different architectures. (Feedback needed. Should we name specific 'next-best' alternative architectures to compare, or just leave it as is since technically all architectures were considered)
+
+## Decision
+
+The system will follow the Microservice architecture. 
+
+Scalability and fault tolerance are two of the systems top 3 -ilities. Moreover, elasticity and evolvability are two of the systems other main -ilities. These are all non-functional requirements that the Microservice architecture excels at.
+
+We do not expect to have a single monolithic database, so this is not a concern.
+
+## Consequences
+
+There is a considerable amount of communication between bounded contexts. This could cause responsiveness and performance issues due to added latency. This could therefore mean we would need to use asynchronous REST calls or publish-subscribe communication to mitigate these issues as much of the communication does not have to be synchronous. 

doc/architecture/decisions/0014-data-ownership.md

@@ -0,0 +1,19 @@
+# 14. data ownership
+
+Date: 2021-12-02
+
+## Status
+
+Accepted
+
+## Context
+
+The issue motivating this decision, and any context that influences or constrains the decision.
+
+## Decision
+
+The change that we're proposing or have agreed to implement.
+
+## Consequences
+
+What becomes easier or more difficult to do and any risks introduced by the change that will need to be mitigated.

docker-compose.yaml

@@ -72,15 +72,15 @@ services:
         volumes:
             - ./executor-computation/src:/opt/app/src
             - ./executor-computation/target:/opt/app/target
-    executor-robot:
+    # executor-robot:
-        container_name: executor-robot
+    #     container_name: executor-robot
-        build:
+    #     build:
-            context: "."
+    #         context: "."
-            dockerfile: "./executor-robot/Dockerfile"
+    #         dockerfile: "./executor-robot/Dockerfile"
-            target: development
+    #         target: development
-        ports:
+    #     ports:
-            - "8084:8084"
+    #         - "8084:8084"
-            - "5009:5005"
+    #         - "5009:5005"
-        volumes:
+    #     volumes:
-            - ./executor-robot/src:/opt/app/src
+    #         - ./executor-robot/src:/opt/app/src
-            - ./executor-robot/target:/opt/app/target
+    #         - ./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.statusCode() != HttpStatus.OK.value()) {
-            if (response.body().equals("")) {
+                logger.info("ExecutorBase | No task assigned");
                 return null;
             }
+            logger.info("ExecutorBase | Task assigned");
             JSONObject responseBody = new JSONObject(response.body());
 
-            String inputData = responseBody.getString("inputData");
+            if (!responseBody.get("inputData").equals(null)) {
-            return new Task(responseBody.getString("taskID"), inputData);
+                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

@@ -22,4 +22,9 @@ public class Task {
         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 = "";
+        executorLogger.info("Executor | Starting execution with inputData: " + inputData);
-        if (inputData.contains("+")) {
-            operator = "+";
-        } else if (inputData.contains("-")) {
-            operator = "-";
-        } else if (inputData.contains("*")) {
-            operator = "*";
-        } else {
-            return "invalid data";
-        }
 
-        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("+")) {
+        executorLogger.info("Executor | Finish execution");
-            String[] parts = inputData.split("\\+");
+        return result;
-            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);
     }
 
 }

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.*;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RestController;
 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})
+    @DeleteMapping(path = "/executor-pool/executors/{executorUri}")
-    public ResponseEntity<String> removeExecutorFromExecutorPool(@RequestBody ExecutorJsonRepresentation executorJsonRepresentation){
+    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>
@@ -45,6 +51,41 @@
 			<artifactId>executor-base</artifactId>
 			<version>0.0.1-SNAPSHOT</version>
 		</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>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>

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\"}";
+        String endpoint = "https://api.interactions.ics.unisg.ch/search/searchEngine";
-        var request = HttpRequest.newBuilder()
+
-            .uri(URI.create(postEndpoint))
+        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) {
-
+        userToRobotPort.userToRobot();
-        String key = userToRobotPort.userToRobot();
+        return "";
-        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);
     }
 
 }

mocks/.gitignore

@@ -0,0 +1 @@
+node_modules/

mocks/auction-house/discoveryEndpoin2.js

@@ -0,0 +1,35 @@
+// Require the framework and instantiate it
+const fastify = require("fastify")({ logger: true });
+
+// Declare a route
+fastify.get("/discovery/", async (request, reply) => {
+    return {
+        auctionHouseInfo: [
+            {
+                auctionHouseURI: "http://localhost:3501",
+                webSubURI: "http://example.org",
+                taskTypes: ["COMPUTATION", "RANDOMTEXT"],
+                timeStamp: "2021-12-24 12:00:00",
+                groupName: "Group3",
+            },
+            {
+                auctionHouseURI: "http://localhost:3502",
+                webSubURI: "http://facemash.com",
+                taskTypes: ["BIGROBOT"],
+                timeStamp: "2021-12-24 12:00:00",
+                groupName: "Group2",
+            },
+        ],
+    };
+});
+
+// Run the server!
+const start = async () => {
+    try {
+        await fastify.listen(3501);
+    } catch (err) {
+        fastify.log.error(err);
+        process.exit(1);
+    }
+};
+start();

mocks/auction-house/discoveryEndpoin3.js

@@ -0,0 +1,35 @@
+// Require the framework and instantiate it
+const fastify = require("fastify")({ logger: true });
+
+// Declare a route
+fastify.get("/discovery/", async (request, reply) => {
+    return {
+        auctionHouseInfo: [
+            {
+                auctionHouseURI: "http://localhost:3502",
+                webSubURI: "http://example.org",
+                taskTypes: ["COMPUTATION", "RANDOMTEXT"],
+                timeStamp: "2021-12-24 12:00:00",
+                groupName: "Group3",
+            },
+            {
+                auctionHouseURI: "http://localhost:3501",
+                webSubURI: "http://facemash.com",
+                taskTypes: ["BIGROBOT"],
+                timeStamp: "2021-12-26 12:00:00",
+                groupName: "GroupHAHAHA222",
+            },
+        ],
+    };
+});
+
+// Run the server!
+const start = async () => {
+    try {
+        await fastify.listen(3502);
+    } catch (err) {
+        fastify.log.error(err);
+        process.exit(1);
+    }
+};
+start();

mocks/auction-house/discoveryEndpoint.js

@@ -0,0 +1,35 @@
+// Require the framework and instantiate it
+const fastify = require("fastify")({ logger: true });
+
+// Declare a route
+fastify.get("/discovery/", async (request, reply) => {
+    return {
+        auctionHouseInfo: [
+            {
+                auctionHouseURI: "http://localhost:3500",
+                webSubURI: "http://example.org",
+                taskTypes: ["COMPUTATION", "RANDOMTEXT"],
+                timeStamp: "2021-12-24 12:00:00",
+                groupName: "Group3",
+            },
+            {
+                auctionHouseURI: "http://localhost:3501",
+                webSubURI: "http://facemash.com",
+                taskTypes: ["BIGROBOT"],
+                timeStamp: "2021-12-24 12:00:00",
+                groupName: "Group2",
+            },
+        ],
+    };
+});
+
+// Run the server!
+const start = async () => {
+    try {
+        await fastify.listen(3500);
+    } catch (err) {
+        fastify.log.error(err);
+        process.exit(1);
+    }
+};
+start();

mocks/package.json

@@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "fastify": "^3.24.1"
+  }
+}

mocks/yarn.lock

@@ -0,0 +1,322 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@fastify/ajv-compiler@^1.0.0":
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/@fastify/ajv-compiler/-/ajv-compiler-1.1.0.tgz#5ce80b1fc8bebffc8c5ba428d5e392d0f9ed10a1"
+  integrity sha512-gvCOUNpXsWrIQ3A4aXCLIdblL0tDq42BG/2Xw7oxbil9h11uow10ztS2GuFazNBfjbrsZ5nl+nPl5jDSjj5TSg==
+  dependencies:
+    ajv "^6.12.6"
+
+abstract-logging@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/abstract-logging/-/abstract-logging-2.0.1.tgz#6b0c371df212db7129b57d2e7fcf282b8bf1c839"
+  integrity sha512-2BjRTZxTPvheOvGbBslFSYOUkr+SjPtOnrLP33f+VIWLzezQpZcqVg7ja3L4dBXmzzgwT+a029jRx5PCi3JuiA==
+
+ajv@^6.11.0, ajv@^6.12.6:
+  version "6.12.6"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.6.tgz#baf5a62e802b07d977034586f8c3baf5adf26df4"
+  integrity sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==
+  dependencies:
+    fast-deep-equal "^3.1.1"
+    fast-json-stable-stringify "^2.0.0"
+    json-schema-traverse "^0.4.1"
+    uri-js "^4.2.2"
+
+ajv@^8.1.0:
+  version "8.8.2"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-8.8.2.tgz#01b4fef2007a28bf75f0b7fc009f62679de4abbb"
+  integrity sha512-x9VuX+R/jcFj1DHo/fCp99esgGDWiHENrKxaCENuCxpoMCmAt/COCGVDwA7kleEpEzJjDnvh3yGoOuLu0Dtllw==
+  dependencies:
+    fast-deep-equal "^3.1.1"
+    json-schema-traverse "^1.0.0"
+    require-from-string "^2.0.2"
+    uri-js "^4.2.2"
+
+archy@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/archy/-/archy-1.0.0.tgz#f9c8c13757cc1dd7bc379ac77b2c62a5c2868c40"
+  integrity sha1-+cjBN1fMHde8N5rHeyxipcKGjEA=
+
+atomic-sleep@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/atomic-sleep/-/atomic-sleep-1.0.0.tgz#eb85b77a601fc932cfe432c5acd364a9e2c9075b"
+  integrity sha512-kNOjDqAh7px0XWNI+4QbzoiR/nTkHAWNud2uvnJquD1/x5a7EQZMJT0AczqK0Qn67oY/TTQ1LbUKajZpp3I9tQ==
+
+avvio@^7.1.2:
+  version "7.2.2"
+  resolved "https://registry.yarnpkg.com/avvio/-/avvio-7.2.2.tgz#58e00e7968870026cd7b7d4f689d596db629e251"
+  integrity sha512-XW2CMCmZaCmCCsIaJaLKxAzPwF37fXi1KGxNOvedOpeisLdmxZnblGc3hpHWYnlP+KOUxZsazh43WXNHgXpbqw==
+  dependencies:
+    archy "^1.0.0"
+    debug "^4.0.0"
+    fastq "^1.6.1"
+    queue-microtask "^1.1.2"
+
+cookie@^0.4.0:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.1.tgz#afd713fe26ebd21ba95ceb61f9a8116e50a537d1"
+  integrity sha512-ZwrFkGJxUR3EIoXtO+yVE69Eb7KlixbaeAWfBQB9vVsNn/o+Yw69gBWSSDK825hQNdN+wF8zELf3dFNl/kxkUA==
+
+debug@^4.0.0:
+  version "4.3.3"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.3.tgz#04266e0b70a98d4462e6e288e38259213332b664"
+  integrity sha512-/zxw5+vh1Tfv+4Qn7a5nsbcJKPaSvCDhojn6FEl9vupwK2VCSDtEiEtqr8DFtzYFOdz63LBkxec7DYuc2jon6Q==
+  dependencies:
+    ms "2.1.2"
+
+deepmerge@^4.2.2:
+  version "4.2.2"
+  resolved "https://registry.yarnpkg.com/deepmerge/-/deepmerge-4.2.2.tgz#44d2ea3679b8f4d4ffba33f03d865fc1e7bf4955"
+  integrity sha512-FJ3UgI4gIl+PHZm53knsuSFpE+nESMr7M4v9QcgB7S63Kj/6WqMiFQJpBBYz1Pt+66bZpP3Q7Lye0Oo9MPKEdg==
+
+fast-decode-uri-component@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/fast-decode-uri-component/-/fast-decode-uri-component-1.0.1.tgz#46f8b6c22b30ff7a81357d4f59abfae938202543"
+  integrity sha512-WKgKWg5eUxvRZGwW8FvfbaH7AXSh2cL+3j5fMGzUMCxWBJ3dV3a7Wz8y2f/uQ0e3B6WmodD3oS54jTQ9HVTIIg==
+
+fast-deep-equal@^3.1.1, fast-deep-equal@^3.1.3:
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz#3a7d56b559d6cbc3eb512325244e619a65c6c525"
+  integrity sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==
+
+fast-json-stable-stringify@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz#874bf69c6f404c2b5d99c481341399fd55892633"
+  integrity sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw==
+
+fast-json-stringify@^2.5.2:
+  version "2.7.12"
+  resolved "https://registry.yarnpkg.com/fast-json-stringify/-/fast-json-stringify-2.7.12.tgz#5bb7941695b52f545191bc396396230633f43592"
+  integrity sha512-4hjwZDPmgj/ZUKXhEWovGPciE/5mWtAIQQxN+2VBDFun7DRTk2oOItbu9ZZp6kqj+eZ/u7z+dgBgM74cfGRnBQ==
+  dependencies:
+    ajv "^6.11.0"
+    deepmerge "^4.2.2"
+    rfdc "^1.2.0"
+    string-similarity "^4.0.1"
+
+fast-redact@^3.0.0:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/fast-redact/-/fast-redact-3.0.2.tgz#c940ba7162dde3aeeefc522926ae8c5231412904"
+  integrity sha512-YN+CYfCVRVMUZOUPeinHNKgytM1wPI/C/UCLEi56EsY2dwwvI00kIJHJoI7pMVqGoMew8SMZ2SSfHKHULHXDsg==
+
+fast-safe-stringify@^2.0.8:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/fast-safe-stringify/-/fast-safe-stringify-2.1.1.tgz#c406a83b6e70d9e35ce3b30a81141df30aeba884"
+  integrity sha512-W+KJc2dmILlPplD/H4K9l9LcAHAfPtP6BY84uVLXQ6Evcz9Lcg33Y2z1IVblT6xdY54PXYVHEv+0Wpq8Io6zkA==
+
+fastify-error@^0.3.0:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/fastify-error/-/fastify-error-0.3.1.tgz#8eb993e15e3cf57f0357fc452af9290f1c1278d2"
+  integrity sha512-oCfpcsDndgnDVgiI7bwFKAun2dO+4h84vBlkWsWnz/OUK9Reff5UFoFl241xTiLeHWX/vU9zkDVXqYUxjOwHcQ==
+
+fastify-warning@^0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/fastify-warning/-/fastify-warning-0.2.0.tgz#e717776026a4493dc9a2befa44db6d17f618008f"
+  integrity sha512-s1EQguBw/9qtc1p/WTY4eq9WMRIACkj+HTcOIK1in4MV5aFaQC9ZCIt0dJ7pr5bIf4lPpHvAtP2ywpTNgs7hqw==
+
+fastify@^3.24.1:
+  version "3.24.1"
+  resolved "https://registry.yarnpkg.com/fastify/-/fastify-3.24.1.tgz#979d34e096f40b7a90e90733efbbdae81623034e"
+  integrity sha512-ZL0V6u37d65tAY8lMwVMFtFvnEeJcG80QBNSdChqCm4i4x+is/38OU14gzJuRXhpenTL+pTJzNcu5Kn1ouzM3Q==
+  dependencies:
+    "@fastify/ajv-compiler" "^1.0.0"
+    abstract-logging "^2.0.0"
+    avvio "^7.1.2"
+    fast-json-stringify "^2.5.2"
+    fastify-error "^0.3.0"
+    fastify-warning "^0.2.0"
+    find-my-way "^4.1.0"
+    flatstr "^1.0.12"
+    light-my-request "^4.2.0"
+    pino "^6.13.0"
+    proxy-addr "^2.0.7"
+    rfdc "^1.1.4"
+    secure-json-parse "^2.0.0"
+    semver "^7.3.2"
+    tiny-lru "^7.0.0"
+
+fastq@^1.6.1:
+  version "1.13.0"
+  resolved "https://registry.yarnpkg.com/fastq/-/fastq-1.13.0.tgz#616760f88a7526bdfc596b7cab8c18938c36b98c"
+  integrity sha512-YpkpUnK8od0o1hmeSc7UUs/eB/vIPWJYjKck2QKIzAf71Vm1AAQ3EbuZB3g2JIy+pg+ERD0vqI79KyZiB2e2Nw==
+  dependencies:
+    reusify "^1.0.4"
+
+find-my-way@^4.1.0:
+  version "4.4.0"
+  resolved "https://registry.yarnpkg.com/find-my-way/-/find-my-way-4.4.0.tgz#e4a115031d1c5c538d028d06b666e2174462bc07"
+  integrity sha512-hpntHvK0iOHp3pqWRRUEzioar4tp8euBD8DkPG3VauOriZLgwGZLTNp6yZSrdctJ8RCDS7zhZSR2V+yOaBbNow==
+  dependencies:
+    fast-decode-uri-component "^1.0.1"
+    fast-deep-equal "^3.1.3"
+    safe-regex2 "^2.0.0"
+    semver-store "^0.3.0"
+
+flatstr@^1.0.12:
+  version "1.0.12"
+  resolved "https://registry.yarnpkg.com/flatstr/-/flatstr-1.0.12.tgz#c2ba6a08173edbb6c9640e3055b95e287ceb5931"
+  integrity sha512-4zPxDyhCyiN2wIAtSLI6gc82/EjqZc1onI4Mz/l0pWrAlsSfYH/2ZIcU+e3oA2wDwbzIWNKwa23F8rh6+DRWkw==
+
+forwarded@0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/forwarded/-/forwarded-0.2.0.tgz#2269936428aad4c15c7ebe9779a84bf0b2a81811"
+  integrity sha512-buRG0fpBtRHSTCOASe6hD258tEubFoRLb4ZNA6NxMVHNw2gOcwHo9wyablzMzOA5z9xA9L1KNjk/Nt6MT9aYow==
+
+ipaddr.js@1.9.1:
+  version "1.9.1"
+  resolved "https://registry.yarnpkg.com/ipaddr.js/-/ipaddr.js-1.9.1.tgz#bff38543eeb8984825079ff3a2a8e6cbd46781b3"
+  integrity sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g==
+
+json-schema-traverse@^0.4.1:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz#69f6a87d9513ab8bb8fe63bdb0979c448e684660"
+  integrity sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg==
+
+json-schema-traverse@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/json-schema-traverse/-/json-schema-traverse-1.0.0.tgz#ae7bcb3656ab77a73ba5c49bf654f38e6b6860e2"
+  integrity sha512-NM8/P9n3XjXhIZn1lLhkFaACTOURQXjWhV4BA/RnOv8xvgqtqpAX9IO4mRQxSx1Rlo4tqzeqb0sOlruaOy3dug==
+
+light-my-request@^4.2.0:
+  version "4.7.0"
+  resolved "https://registry.yarnpkg.com/light-my-request/-/light-my-request-4.7.0.tgz#5bacd17fa0eaf96fe5eed1682c5e0d361953cf46"
+  integrity sha512-LTa8YZp3K2AUpqUnwwKajoIHcsKOBnzwJNQSrk7unziPwo6CjOYjyO0F9wfkxFvP+nBsCGe3eMPnedVgIIgdAw==
+  dependencies:
+    ajv "^8.1.0"
+    cookie "^0.4.0"
+    fastify-warning "^0.2.0"
+    set-cookie-parser "^2.4.1"
+
+lru-cache@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-6.0.0.tgz#6d6fe6570ebd96aaf90fcad1dafa3b2566db3a94"
+  integrity sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==
+  dependencies:
+    yallist "^4.0.0"
+
+ms@2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
+  integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==
+
+pino-std-serializers@^3.1.0:
+  version "3.2.0"
+  resolved "https://registry.yarnpkg.com/pino-std-serializers/-/pino-std-serializers-3.2.0.tgz#b56487c402d882eb96cd67c257868016b61ad671"
+  integrity sha512-EqX4pwDPrt3MuOAAUBMU0Tk5kR/YcCM5fNPEzgCO2zJ5HfX0vbiH9HbJglnyeQsN96Kznae6MWD47pZB5avTrg==
+
+pino@^6.13.0:
+  version "6.13.3"
+  resolved "https://registry.yarnpkg.com/pino/-/pino-6.13.3.tgz#60b93bcda1541f92fb37b3f2be0a25cf1d05b6fe"
+  integrity sha512-tJy6qVgkh9MwNgqX1/oYi3ehfl2Y9H0uHyEEMsBe74KinESIjdMrMQDWpcZPpPicg3VV35d/GLQZmo4QgU2Xkg==
+  dependencies:
+    fast-redact "^3.0.0"
+    fast-safe-stringify "^2.0.8"
+    fastify-warning "^0.2.0"
+    flatstr "^1.0.12"
+    pino-std-serializers "^3.1.0"
+    quick-format-unescaped "^4.0.3"
+    sonic-boom "^1.0.2"
+
+proxy-addr@^2.0.7:
+  version "2.0.7"
+  resolved "https://registry.yarnpkg.com/proxy-addr/-/proxy-addr-2.0.7.tgz#f19fe69ceab311eeb94b42e70e8c2070f9ba1025"
+  integrity sha512-llQsMLSUDUPT44jdrU/O37qlnifitDP+ZwrmmZcoSKyLKvtZxpyV0n2/bD/N4tBAAZ/gJEdZU7KMraoK1+XYAg==
+  dependencies:
+    forwarded "0.2.0"
+    ipaddr.js "1.9.1"
+
+punycode@^2.1.0:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
+  integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==
+
+queue-microtask@^1.1.2:
+  version "1.2.3"
+  resolved "https://registry.yarnpkg.com/queue-microtask/-/queue-microtask-1.2.3.tgz#4929228bbc724dfac43e0efb058caf7b6cfb6243"
+  integrity sha512-NuaNSa6flKT5JaSYQzJok04JzTL1CA6aGhv5rfLW3PgqA+M2ChpZQnAC8h8i4ZFkBS8X5RqkDBHA7r4hej3K9A==
+
+quick-format-unescaped@^4.0.3:
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/quick-format-unescaped/-/quick-format-unescaped-4.0.4.tgz#93ef6dd8d3453cbc7970dd614fad4c5954d6b5a7"
+  integrity sha512-tYC1Q1hgyRuHgloV/YXs2w15unPVh8qfu/qCTfhTYamaw7fyhumKa2yGpdSo87vY32rIclj+4fWYQXUMs9EHvg==
+
+require-from-string@^2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/require-from-string/-/require-from-string-2.0.2.tgz#89a7fdd938261267318eafe14f9c32e598c36909"
+  integrity sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==
+
+ret@~0.2.0:
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/ret/-/ret-0.2.2.tgz#b6861782a1f4762dce43402a71eb7a283f44573c"
+  integrity sha512-M0b3YWQs7R3Z917WRQy1HHA7Ba7D8hvZg6UE5mLykJxQVE2ju0IXbGlaHPPlkY+WN7wFP+wUMXmBFA0aV6vYGQ==
+
+reusify@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/reusify/-/reusify-1.0.4.tgz#90da382b1e126efc02146e90845a88db12925d76"
+  integrity sha512-U9nH88a3fc/ekCF1l0/UP1IosiuIjyTh7hBvXVMHYgVcfGvt897Xguj2UOLDeI5BG2m7/uwyaLVT6fbtCwTyzw==
+
+rfdc@^1.1.4, rfdc@^1.2.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/rfdc/-/rfdc-1.3.0.tgz#d0b7c441ab2720d05dc4cf26e01c89631d9da08b"
+  integrity sha512-V2hovdzFbOi77/WajaSMXk2OLm+xNIeQdMMuB7icj7bk6zi2F8GGAxigcnDFpJHbNyNcgyJDiP+8nOrY5cZGrA==
+
+safe-regex2@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/safe-regex2/-/safe-regex2-2.0.0.tgz#b287524c397c7a2994470367e0185e1916b1f5b9"
+  integrity sha512-PaUSFsUaNNuKwkBijoAPHAK6/eM6VirvyPWlZ7BAQy4D+hCvh4B6lIG+nPdhbFfIbP+gTGBcrdsOaUs0F+ZBOQ==
+  dependencies:
+    ret "~0.2.0"
+
+secure-json-parse@^2.0.0:
+  version "2.4.0"
+  resolved "https://registry.yarnpkg.com/secure-json-parse/-/secure-json-parse-2.4.0.tgz#5aaeaaef85c7a417f76271a4f5b0cc3315ddca85"
+  integrity sha512-Q5Z/97nbON5t/L/sH6mY2EacfjVGwrCcSi5D3btRO2GZ8pf1K1UN7Z9H5J57hjVU2Qzxr1xO+FmBhOvEkzCMmg==
+
+semver-store@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/semver-store/-/semver-store-0.3.0.tgz#ce602ff07df37080ec9f4fb40b29576547befbe9"
+  integrity sha512-TcZvGMMy9vodEFSse30lWinkj+JgOBvPn8wRItpQRSayhc+4ssDs335uklkfvQQJgL/WvmHLVj4Ycv2s7QCQMg==
+
+semver@^7.3.2:
+  version "7.3.5"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-7.3.5.tgz#0b621c879348d8998e4b0e4be94b3f12e6018ef7"
+  integrity sha512-PoeGJYh8HK4BTO/a9Tf6ZG3veo/A7ZVsYrSA6J8ny9nb3B1VrpkuN+z9OE5wfE5p6H4LchYZsegiQgbJD94ZFQ==
+  dependencies:
+    lru-cache "^6.0.0"
+
+set-cookie-parser@^2.4.1:
+  version "2.4.8"
+  resolved "https://registry.yarnpkg.com/set-cookie-parser/-/set-cookie-parser-2.4.8.tgz#d0da0ed388bc8f24e706a391f9c9e252a13c58b2"
+  integrity sha512-edRH8mBKEWNVIVMKejNnuJxleqYE/ZSdcT8/Nem9/mmosx12pctd80s2Oy00KNZzrogMZS5mauK2/ymL1bvlvg==
+
+sonic-boom@^1.0.2:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/sonic-boom/-/sonic-boom-1.4.1.tgz#d35d6a74076624f12e6f917ade7b9d75e918f53e"
+  integrity sha512-LRHh/A8tpW7ru89lrlkU4AszXt1dbwSjVWguGrmlxE7tawVmDBlI1PILMkXAxJTwqhgsEeTHzj36D5CmHgQmNg==
+  dependencies:
+    atomic-sleep "^1.0.0"
+    flatstr "^1.0.12"
+
+string-similarity@^4.0.1:
+  version "4.0.4"
+  resolved "https://registry.yarnpkg.com/string-similarity/-/string-similarity-4.0.4.tgz#42d01ab0b34660ea8a018da8f56a3309bb8b2a5b"
+  integrity sha512-/q/8Q4Bl4ZKAPjj8WerIBJWALKkaPRfrvhfF8k/B23i4nzrlRj2/go1m90In7nG/3XDSbOo0+pu6RvCTM9RGMQ==
+
+tiny-lru@^7.0.0:
+  version "7.0.6"
+  resolved "https://registry.yarnpkg.com/tiny-lru/-/tiny-lru-7.0.6.tgz#b0c3cdede1e5882aa2d1ae21cb2ceccf2a331f24"
+  integrity sha512-zNYO0Kvgn5rXzWpL0y3RS09sMK67eGaQj9805jlK9G6pSadfriTczzLHFXa/xcW4mIRfmlB9HyQ/+SgL0V1uow==
+
+uri-js@^4.2.2:
+  version "4.4.1"
+  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-4.4.1.tgz#9b1a52595225859e55f669d928f88c6c57f2a77e"
+  integrity sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==
+  dependencies:
+    punycode "^2.1.0"
+
+yallist@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/yallist/-/yallist-4.0.0.tgz#9bb92790d9c0effec63be73519e11a35019a3a72"
+  integrity sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==

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 java.util.logging.Logger;
-import com.fasterxml.jackson.core.JsonProcessingException;
+
-import org.json.JSONObject;
-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;
@@ -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 {
+        return task;
-
-            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());
-        }
-
     }
 }

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"})
+    @DeleteMapping(path = "/task/{taskId}")
-    public ResponseEntity<Void> applyForTask(@RequestBody Task task) {
+    public ResponseEntity<Void> deleteTask(@PathVariable("taskId") String taskId) {
-
+        logger.info("Roster | Delete task request.");
-        DeleteTaskCommand command = new DeleteTaskCommand(task.getTaskID(), task.getTaskType());
+        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();
+        HttpClient client = HttpClient.newHttpClient();
-        // HttpRequest request = HttpRequest.newBuilder()
+        HttpRequest request = HttpRequest.newBuilder()
-        //         .uri(URI.create(server + "/newtask/" + event.taskType.getValue()))
+                .uri(URI.create(server + "/newtask/" + event.taskType.getValue()))
-        //         .GET()
+                .GET()
-        //         .build();
+                .build();
 
 
-        // try {
+        try {
-        //     client.send(request, HttpResponse.BodyHandlers.ofString());
+            client.send(request, HttpResponse.BodyHandlers.ofString());
-        // } catch (InterruptedException e) {
+        } catch (InterruptedException e) {
-        //     logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
+            logger.log(Level.SEVERE, e.getLocalizedMessage(), e);
-        //     Thread.currentThread().interrupt();
+            Thread.currentThread().interrupt();
-        // } catch (IOException e) {
+        } catch (IOException e) {
-        //     logger.log(Level.SEVERE, e.getLocalizedMessage(), 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
+    public DeleteTaskCommand(String taskId) {
-    private final ExecutorType taskType;
-
-    public DeleteTaskCommand(String taskId, ExecutorType taskType) {
         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 executorType the type of the task
-     * @param executorIdentifier the identifier of the executor (can be any string)
+     * @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

@@ -3,19 +3,23 @@ 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.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;
 
 /**
  * Main TAPAS Auction House application.
@@ -24,32 +28,41 @@ import java.util.List;
 public class TapasAuctionHouseApplication {
     private static final Logger LOGGER = LogManager.getLogger(TapasAuctionHouseApplication.class);
 
-    public static String RESOURCE_DIRECTORY = "https://api.interactions.ics.unisg.ch/auction-houses/";
     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();
+        bootstrapMarketplaceWithWebSub();
         bootstrapMarketplaceWithMqtt();
+        var getExecutorsService = new GetExecutorsService();
+        getExecutorsService.getExecutorsFromExecutorPool();
 	}
     /**
      * Discovers auction houses and subscribes to WebSub notifications
      */
 	private static void bootstrapMarketplaceWithWebSub() {
-        List<String> auctionHouseEndpoints = discoverAuctionHouseEndpoints();
+        WebSubSubscriber subscriber = new WebSubSubscriber(ENVIRONMENT.getProperty("auction.house.uri"));
 
-        WebSubSubscriber subscriber = new WebSubSubscriber();
+        try {
-
+            subscriber.subscribeToAuctionHouseEndpoint(new URI("https://tapas-auction-house.86-119-34-242.nip.io/websub-discovery"));
-        for (String endpoint : auctionHouseEndpoints) {
+        } catch (URISyntaxException e) {
-            subscriber.subscribeToAuctionHouseEndpoint(URI.create(endpoint));
+            // TODO Auto-generated catch block
+            e.printStackTrace();
         }
+
+        discoverAuctionHouseEndpoints();
+
+        // 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());
+        //     }
+        // }
     }
 
     /**
@@ -74,11 +87,26 @@ public class TapasAuctionHouseApplication {
         }
     }
 
-	private static List<String> discoverAuctionHouseEndpoints() {
+	private static void discoverAuctionHouseEndpoints() {
+
         AuctionHouseResourceDirectory rd = new AuctionHouseResourceDirectory(
-            URI.create(RESOURCE_DIRECTORY)
+            URI.create(ENVIRONMENT.getProperty("discovery.endpoint.uri"))
         );
 
-	    return 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(ENVIRONMENT.getProperty("discovery.endpoint.uri"))
+    //         );
+
+	//         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) {
+    String AUCTION_HOUSE_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");
 
-        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
+                for (String link : response.headers().allValues("link")) {
-                // uri with response uri
+                    if (link.contains("rel=\"hub\"")) {
-                JSONObject jsonObject = new JSONObject(response.body());
+                        String hub = link.split(">")[0];
-                System.out.println(jsonObject);
+                        links.put("hub", hub.substring(1));
-                return jsonObject.getString("topic");
+                    } 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()
+        URI hubURI;
-        .put("hub.callback", AUCTION_HOUSE_ENDPOINT + "/auction-started")
+        try {
-        .put("hub.mode", "subscribe")
+            hubURI = new URI(hub);
-        .put("hub.topic", topic)
+        } catch (URISyntaxException e) {
-        .put("hub.ws", false)
+            // TODO Auto-generated catch block
-        .toString();
+            e.printStackTrace();
+            return;
+        }
 
+        System.out.println("HUB: " + hub);
+        System.out.println("TOPIC: " + topic);
 
         HttpRequest request = HttpRequest.newBuilder()
-                .uri(URI.create(WEBSUB_HUB_ENDPOINT))
+                .uri(hubURI)
-                .header("Content-Type", "application/json")
+                .header("Content-Type", "application/x-www-form-urlencoded")
-                .POST(HttpRequest.BodyPublishers.ofString(body))
+                .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/AuctionHouseDiscoveryJsonRepresentation.java

@@ -0,0 +1,48 @@
+package ch.unisg.tapas.auctionhouse.adapter.common.formats;
+
+import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
+
+import java.util.List;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import lombok.Getter;
+import lombok.Setter;
+
+public class AuctionHouseDiscoveryJsonRepresentation {
+    public static final String MEDIA_TYPE = "application/auctionhousediscovery+json";
+
+    @Getter @Setter
+    private String auctionHouseUri;
+
+    @Getter @Setter
+    private String webSubUri;
+
+    @Getter @Setter
+    private List<String> taskTypes;
+
+    @Getter @Setter
+    private String timeStamp;
+
+    @Getter @Setter
+    private String groupName;
+
+    public AuctionHouseDiscoveryJsonRepresentation() {}
+
+    public AuctionHouseDiscoveryJsonRepresentation(AuctionHouseDiscoveryInformation auctionHouseDiscoveryInformation){
+        this.auctionHouseUri = auctionHouseDiscoveryInformation.getAuctionHouseUri().getValue().toString();
+        this.webSubUri = auctionHouseDiscoveryInformation.getWebSubUri().getValue().toString();
+        this.taskTypes = auctionHouseDiscoveryInformation.getTaskTypes().getValue();
+        this.timeStamp = auctionHouseDiscoveryInformation.getTimeStamp().getValue().toString();
+        this.groupName = auctionHouseDiscoveryInformation.getGroupName().getValue();
+    }
+
+    public static String serialize(AuctionHouseDiscoveryInformation auctionHouseDiscoveryInformation) throws JsonProcessingException {
+        AuctionHouseDiscoveryJsonRepresentation representation = new AuctionHouseDiscoveryJsonRepresentation(auctionHouseDiscoveryInformation);
+
+        ObjectMapper mapper = new ObjectMapper();
+        mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
+        return mapper.writeValueAsString(representation);
+    }
+}