Merge pull request #98 from SCS-ASSE-FS21-Group1/discovery-web-controller

added the necessary classes for the discovery web controller
This commit is contained in:
Marcel 2021-12-06 03:34:30 +01:00 committed by GitHub
commit 32bf461026
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GPG Key ID: 4AEE18F83AFDEB23
16 changed files with 871 additions and 28 deletions

1
mocks/.gitignore vendored Normal file
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@ -0,0 +1 @@
node_modules/

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// 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();

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@ -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();

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@ -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();

5
mocks/package.json Normal file
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{
"dependencies": {
"fastify": "^3.24.1"
}
}

322
mocks/yarn.lock Normal file
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@ -0,0 +1,322 @@
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version "7.3.5"
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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"
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version "1.4.1"
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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"
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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"
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View File

@ -2,6 +2,7 @@ package ch.unisg.tapas;
import ch.unisg.tapas.auctionhouse.adapter.common.clients.TapasMqttClient;
import ch.unisg.tapas.auctionhouse.adapter.in.messaging.mqtt.AuctionEventsMqttDispatcher;
import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscovery;
import ch.unisg.tapas.auctionhouse.adapter.common.clients.WebSubSubscriber;
import ch.unisg.tapas.common.AuctionHouseResourceDirectory;
import ch.unisg.tapas.common.ConfigProperties;
@ -16,6 +17,9 @@ import org.springframework.core.env.ConfigurableEnvironment;
import java.net.URI;
import java.util.List;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
/**
* Main TAPAS Auction House application.
@ -24,7 +28,7 @@ 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 RESOURCE_DIRECTORY = "http://localhost:3500";
public static String DEFAULT_MQTT_BROKER = "tcp://broker.hivemq.com:1883";
private static ConfigurableEnvironment ENVIRONMENT;
@ -36,20 +40,23 @@ public class TapasAuctionHouseApplication {
// TODO Set start up of message services with config
// We will use these bootstrap methods in Week 6:
// bootstrapMarketplaceWithWebSub();
bootstrapMarketplaceWithWebSub();
bootstrapMarketplaceWithMqtt();
ScheduledExecutorService executor = Executors.newScheduledThreadPool(1);
executor.scheduleAtFixedRate(crawlerRunnable, 30, 30, TimeUnit.SECONDS);
}
/**
* Discovers auction houses and subscribes to WebSub notifications
*/
private static void bootstrapMarketplaceWithWebSub() {
List<String> auctionHouseEndpoints = discoverAuctionHouseEndpoints();
discoverAuctionHouseEndpoints();
WebSubSubscriber subscriber = new WebSubSubscriber();
// WebSubSubscriber subscriber = new WebSubSubscriber();
for (String endpoint : auctionHouseEndpoints) {
subscriber.subscribeToAuctionHouseEndpoint(URI.create(endpoint));
}
// for (String endpoint : auctionHouseEndpoints) {
// subscriber.subscribeToAuctionHouseEndpoint(URI.create(endpoint));
// }
}
/**
@ -74,11 +81,22 @@ public class TapasAuctionHouseApplication {
}
}
private static List<String> discoverAuctionHouseEndpoints() {
private static void discoverAuctionHouseEndpoints() {
AuctionHouseResourceDirectory rd = new AuctionHouseResourceDirectory(
URI.create(RESOURCE_DIRECTORY)
);
return rd.retrieveAuctionHouseEndpoints();
AuctionHouseDiscovery.getInstance().addAuctionHouseDiscoveryInformation(rd.retrieveAuctionHouseEndpoints());
}
private static Runnable crawlerRunnable = new Runnable() {
public void run() {
AuctionHouseResourceDirectory rd = new AuctionHouseResourceDirectory(
URI.create(RESOURCE_DIRECTORY)
);
AuctionHouseDiscovery.getInstance().addAuctionHouseDiscoveryInformation(rd.retrieveAuctionHouseEndpoints());
}
};
}

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@ -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);
}
}

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@ -0,0 +1,51 @@
package ch.unisg.tapas.auctionhouse.adapter.in.web;
import ch.unisg.tapas.auctionhouse.adapter.common.formats.AuctionHouseDiscoveryJsonRepresentation;
import ch.unisg.tapas.auctionhouse.application.port.in.AuctionHouseDiscoveryUseCase;
import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
import java.util.List;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ArrayNode;
import com.fasterxml.jackson.databind.node.ObjectNode;
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.RestController;
/**
* Controller that handles HTTP requests for the auction house discovery. This controller implements
* the {@link AuctionHouseDiscoveryUseCase} use case using the {@link AuctionHouseDiscoveryCommand} command.
*/
@RestController
public class AuctionHouseDiscoveryWebController {
private final AuctionHouseDiscoveryUseCase auctionHouseDiscoveryUseCase;
public AuctionHouseDiscoveryWebController(AuctionHouseDiscoveryUseCase auctionHouseDiscoveryUseCase) {
this.auctionHouseDiscoveryUseCase = auctionHouseDiscoveryUseCase;
}
@GetMapping(path="/discovery/", consumes = AuctionHouseDiscoveryJsonRepresentation.MEDIA_TYPE)
public ResponseEntity<String> auctionHouseDiscovery() {
List<AuctionHouseDiscoveryInformation> auctionHouseDiscoveryInformation = auctionHouseDiscoveryUseCase.auctionHouseDiscovery();
ObjectMapper mapper = new ObjectMapper();
ObjectNode response = mapper.createObjectNode();
ArrayNode array = response.putArray("auctionHouseInfo");
for (AuctionHouseDiscoveryInformation info : auctionHouseDiscoveryInformation) {
array.add(mapper.valueToTree(new AuctionHouseDiscoveryJsonRepresentation(info)));
}
HttpHeaders responseHeaders = new HttpHeaders();
responseHeaders.add(HttpHeaders.CONTENT_TYPE, AuctionHouseDiscoveryJsonRepresentation.MEDIA_TYPE);
return new ResponseEntity<>(response.toString(), responseHeaders, HttpStatus.OK);
}
}

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@ -0,0 +1,76 @@
package ch.unisg.tapas.auctionhouse.adapter.out.web;
import ch.unisg.tapas.auctionhouse.application.port.out.AuctionHouseDiscoveryPort;
import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.json.JSONArray;
import org.json.JSONObject;
import java.io.IOException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.sql.Timestamp;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
public class AuctionHouseDiscoveryHttpAdapter implements AuctionHouseDiscoveryPort {
private static final Logger LOGGER = LogManager.getLogger(AuctionHouseDiscoveryHttpAdapter.class);
public List<AuctionHouseDiscoveryInformation> fetchAuctionHouseInformation(URI auctionHouseURI){
System.out.println(auctionHouseURI);
try{
var client = HttpClient.newHttpClient();
var request = HttpRequest.newBuilder()
.uri(auctionHouseURI)
.GET()
.build();
var response = client.send(request, HttpResponse.BodyHandlers.ofString());
LOGGER.info(response.body());
var responseBody = new JSONObject(response.body());
var arrayOfInformation = responseBody.getJSONArray("auctionHouseInfo");
var returnList = new LinkedList<AuctionHouseDiscoveryInformation>();
for(int i = 0; i < arrayOfInformation.length(); i++)
{
var informationJSON = arrayOfInformation.getJSONObject(i);
var information = new AuctionHouseDiscoveryInformation(
new AuctionHouseDiscoveryInformation.AuctionHouseUri(URI.create(informationJSON.getString("auctionHouseURI"))),
new AuctionHouseDiscoveryInformation.WebSubUri(URI.create(informationJSON.getString("webSubURI"))),
new AuctionHouseDiscoveryInformation.TaskTypes(getTaskTypes(informationJSON.getJSONArray("taskTypes"))),
new AuctionHouseDiscoveryInformation.TimeStamp(Timestamp.valueOf(informationJSON.getString("timeStamp"))),
new AuctionHouseDiscoveryInformation.GroupName(informationJSON.getString("groupName"))
);
returnList.add(information);
}
return returnList;
} catch (IOException e) {
e.printStackTrace();
return Collections.<AuctionHouseDiscoveryInformation>emptyList();
} catch (InterruptedException e) {
e.printStackTrace();
return Collections.<AuctionHouseDiscoveryInformation>emptyList();
}
}
private List<String> getTaskTypes(JSONArray arrayOfTypes){
var listOfTypes = new LinkedList<String>();
for(int i = 0; i < arrayOfTypes.length(); i++)
{
listOfTypes.add(arrayOfTypes.getString(i));
}
return listOfTypes;
}
}

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@ -0,0 +1,9 @@
package ch.unisg.tapas.auctionhouse.application.port.in;
import java.util.List;
import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
public interface AuctionHouseDiscoveryUseCase {
List<AuctionHouseDiscoveryInformation> auctionHouseDiscovery();
}

View File

@ -0,0 +1,10 @@
package ch.unisg.tapas.auctionhouse.application.port.out;
import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
import java.net.URI;
import java.util.List;
public interface AuctionHouseDiscoveryPort {
List<AuctionHouseDiscoveryInformation> fetchAuctionHouseInformation(URI auctionHouseURI);
}

View File

@ -0,0 +1,19 @@
package ch.unisg.tapas.auctionhouse.application.service;
import java.util.List;
import org.springframework.stereotype.Component;
import ch.unisg.tapas.auctionhouse.application.port.in.AuctionHouseDiscoveryUseCase;
import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscovery;
import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
@Component
public class AuctionHouseDiscoveryService implements AuctionHouseDiscoveryUseCase {
@Override
public List<AuctionHouseDiscoveryInformation> auctionHouseDiscovery() {
return AuctionHouseDiscovery.getInstance().getAuctionHouseDiscoveryList();
}
}

View File

@ -0,0 +1,73 @@
package ch.unisg.tapas.auctionhouse.domain;
import java.net.URI;
import java.net.URISyntaxException;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import lombok.Getter;
public class AuctionHouseDiscovery {
private static final AuctionHouseDiscovery auctionHouseDiscovery = new AuctionHouseDiscovery();
private final List<String> tasktypes = new ArrayList<String>() {
{
add("computation");
add("smallrobot");
}
};
@Getter
private List<AuctionHouseDiscoveryInformation> auctionHouseDiscoveryList = new ArrayList<>() {
};
private AuctionHouseDiscovery() {
try {
// Add our information to list
auctionHouseDiscoveryList.add(new AuctionHouseDiscoveryInformation(
new AuctionHouseDiscoveryInformation.AuctionHouseUri(new URI("http://localhost:8086")),
new AuctionHouseDiscoveryInformation.WebSubUri(new URI("http://localhost:8086/websub")),
new AuctionHouseDiscoveryInformation.TaskTypes(tasktypes),
new AuctionHouseDiscoveryInformation.TimeStamp(new Timestamp(new Date().getTime())),
new AuctionHouseDiscoveryInformation.GroupName("Group 1")
));
} catch (URISyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static AuctionHouseDiscovery getInstance() {
return auctionHouseDiscovery;
}
public List<AuctionHouseDiscoveryInformation> getAuctionHouseDiscoveryInformation() {
return auctionHouseDiscoveryList;
}
public void addAuctionHouseDiscoveryInformation(List<AuctionHouseDiscoveryInformation> informations) {
outerloop:
for (AuctionHouseDiscoveryInformation discovery : informations) {
for (AuctionHouseDiscoveryInformation endpoint : auctionHouseDiscoveryList) {
// Check if discovery is already in our discovery list
if (endpoint.getAuctionHouseUri().getValue().toString().equals(discovery.getAuctionHouseUri().getValue().toString())) {
// Check if the new discovery is more recent than the current
if (endpoint.getTimeStamp().getValue().before(discovery.getTimeStamp().getValue())) {
// Endpoint information is older. Remove and add the new discovery to the list
auctionHouseDiscoveryList.remove(endpoint);
break;
} else {
continue outerloop;
}
}
}
auctionHouseDiscoveryList.add(discovery);
}
}
}

View File

@ -0,0 +1,65 @@
package ch.unisg.tapas.auctionhouse.domain;
import lombok.Getter;
import lombok.Value;
import java.net.URI;
import java.sql.Timestamp;
import java.util.ArrayList;
import java.util.List;
//TODO: change to array type
public class AuctionHouseDiscoveryInformation {
@Getter
private final AuctionHouseUri auctionHouseUri;
@Getter
private final WebSubUri webSubUri;
@Getter
private final TaskTypes taskTypes;
@Getter
private final TimeStamp timeStamp;
//Had to initialize this in the constructor, but it's not required, so I'm not sure
//if this is correct
@Getter
private final GroupName groupName;
public AuctionHouseDiscoveryInformation(AuctionHouseUri auctionHouseUri, WebSubUri webSubUri,
TaskTypes taskTypes, TimeStamp timeStamp, GroupName groupName){
this.auctionHouseUri = auctionHouseUri;
this.webSubUri = webSubUri;
this.taskTypes = taskTypes;
this.timeStamp = timeStamp;
this.groupName = groupName; //see above
}
@Value
public static class AuctionHouseUri {
private URI value;
}
@Value
public static class WebSubUri {
private URI value;
}
@Value
public static class TaskTypes {
private List<String> value;
}
@Value
public static class TimeStamp {
private Timestamp value;
}
@Value
public static class GroupName {
private String value;
}
}

View File

@ -3,8 +3,13 @@ package ch.unisg.tapas.common;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import ch.unisg.tapas.auctionhouse.adapter.out.web.AuctionHouseDiscoveryHttpAdapter;
import ch.unisg.tapas.auctionhouse.application.port.out.AuctionHouseDiscoveryPort;
import ch.unisg.tapas.auctionhouse.domain.AuctionHouseDiscoveryInformation;
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;
@ -26,32 +31,68 @@ public class AuctionHouseResourceDirectory {
this.rdEndpoint = rdEndpoint;
}
private AuctionHouseDiscoveryPort auctionHouseDiscoveryport = new AuctionHouseDiscoveryHttpAdapter();
private List<AuctionHouseDiscoveryInformation> auctionHouseEndpoints = new ArrayList<>();
// List to keep track of already fetched endpoints
private List<URI> fetchedEndpoints = new ArrayList<>();
/**
* Retrieves the endpoints of all auctions houses registered with this directory.
* @return
*/
public List<String> retrieveAuctionHouseEndpoints() {
List<String> auctionHouseEndpoints = new ArrayList<>();
public List<AuctionHouseDiscoveryInformation> retrieveAuctionHouseEndpoints() {
try {
HttpRequest request = HttpRequest.newBuilder()
.uri(rdEndpoint).GET().build();
fetchedEndpoints.clear();
auctionHouseEndpoints.clear();
HttpResponse<String> response = HttpClient.newBuilder().build()
.send(request, HttpResponse.BodyHandlers.ofString());
// For simplicity, here we just hard code the current representation used by our
// resource directory for auction houses
ObjectMapper objectMapper = new ObjectMapper();
JsonNode payload = objectMapper.readTree(response.body());
for (JsonNode node : payload) {
auctionHouseEndpoints.add(node.get("endpoint").asText());
}
} catch (IOException | InterruptedException e) {
e.printStackTrace();
}
fetchedEndpoints.add(rdEndpoint);
// Start recusive fetching of auctionhouses
fetchEndpoints(getInformation(rdEndpoint));
return auctionHouseEndpoints;
}
// Recursive function to fetch all endpoints
private void fetchEndpoints(List<AuctionHouseDiscoveryInformation> auctionHouses) {
for (AuctionHouseDiscoveryInformation ah : auctionHouses) {
if (!fetchedEndpoints.contains(ah.getAuctionHouseUri().getValue())) {
fetchedEndpoints.add(ah.getAuctionHouseUri().getValue());
fetchEndpoints(getInformation(ah.getAuctionHouseUri().getValue()));
}
}
}
private List<AuctionHouseDiscoveryInformation> getInformation(URI uri) {
List<AuctionHouseDiscoveryInformation> discoveries;
try {
discoveries = auctionHouseDiscoveryport.fetchAuctionHouseInformation(new URI(uri.toString() + "/discovery/"));
outerloop:
for (AuctionHouseDiscoveryInformation discovery : discoveries) {
for (AuctionHouseDiscoveryInformation endpoint : auctionHouseEndpoints) {
// Check if discovery is already in our endpoint list
if (endpoint.getAuctionHouseUri().getValue().toString().equals(discovery.getAuctionHouseUri().getValue().toString())) {
// Check if the new discovery is more recent than the current
if (endpoint.getTimeStamp().getValue().before(discovery.getTimeStamp().getValue())) {
// Endpoint information is older. Remove and add the new discovery to the list
auctionHouseEndpoints.remove(endpoint);
break;
} else {
continue outerloop;
}
}
}
auctionHouseEndpoints.add(discovery);
}
return discoveries;
} catch (URISyntaxException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
// When an error happens return empty list
return new ArrayList<AuctionHouseDiscoveryInformation>();
}
}