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Obtain Live streaming channel Id.
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76 changes: 76 additions & 0 deletions
76
heckenlights-backend/src/main/java/de/paluch/heckenlights/application/RuleService.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| /* | ||
| * Copyright 2016 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 | ||
| * | ||
| * http://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. | ||
| */ | ||
| package de.paluch.heckenlights.application; | ||
|
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| import java.io.IOException; | ||
| import java.util.Collection; | ||
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| import javax.xml.bind.JAXB; | ||
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| import org.springframework.beans.factory.annotation.Value; | ||
| import org.springframework.core.io.Resource; | ||
| import org.springframework.stereotype.Component; | ||
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| import de.paluch.heckenlights.model.Rule; | ||
| import de.paluch.heckenlights.model.Rules; | ||
|
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| /** | ||
| * @author Mark Paluch | ||
| */ | ||
| @Component | ||
| public class RuleService { | ||
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| private final Resource ruleLocation; | ||
| private final Rules rules = new Rules(); | ||
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| private long lastModified; | ||
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| public RuleService(@Value("${rules.location}") Resource ruleLocation) throws IOException { | ||
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| this.ruleLocation = ruleLocation; | ||
| this.lastModified = ruleLocation.lastModified(); | ||
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| updateRules(); | ||
| } | ||
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| public boolean isChanged() { | ||
| try { | ||
| return lastModified != ruleLocation.lastModified(); | ||
| } catch (IOException e) { | ||
| return false; | ||
| } | ||
| } | ||
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| public void updateRules() throws IOException { | ||
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| Rules updated = JAXB.unmarshal(ruleLocation.getFile(), Rules.class); | ||
| lastModified = ruleLocation.lastModified(); | ||
| updateRules(rules, updated); | ||
| } | ||
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| public final Rules getRules() { | ||
| return rules; | ||
| } | ||
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| private void updateRules(Rules instance, Rules updated) { | ||
| instance.getRules().clear(); | ||
| instance.getRules().addAll(updated.getRules()); | ||
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| instance.setDefaultAction(updated.getDefaultAction()); | ||
| instance.setTimeunit(updated.getTimeunit()); | ||
| instance.setTimezone(updated.getTimezone()); | ||
| } | ||
| } |
115 changes: 115 additions & 0 deletions
115
heckenlights-backend/src/main/java/de/paluch/heckenlights/client/YouTubeClient.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,115 @@ | ||
| package de.paluch.heckenlights.client; | ||
|
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| import java.io.File; | ||
| import java.io.FileReader; | ||
| import java.io.IOException; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
| import java.util.concurrent.ExecutionException; | ||
| import java.util.concurrent.TimeUnit; | ||
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| import org.springframework.beans.factory.annotation.Value; | ||
| import org.springframework.stereotype.Component; | ||
|
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| import com.google.api.client.auth.oauth2.Credential; | ||
| import com.google.api.client.auth.oauth2.StoredCredential; | ||
| import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp; | ||
| import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver; | ||
| import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow; | ||
| import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets; | ||
| import com.google.api.client.http.HttpTransport; | ||
| import com.google.api.client.http.javanet.NetHttpTransport; | ||
| import com.google.api.client.json.JsonFactory; | ||
| import com.google.api.client.json.jackson2.JacksonFactory; | ||
| import com.google.api.client.util.store.DataStore; | ||
| import com.google.api.client.util.store.FileDataStoreFactory; | ||
| import com.google.api.services.youtube.YouTube; | ||
| import com.google.api.services.youtube.model.LiveBroadcastListResponse; | ||
| import com.google.common.cache.CacheBuilder; | ||
| import com.google.common.cache.CacheLoader; | ||
| import com.google.common.cache.LoadingCache; | ||
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| import lombok.extern.slf4j.Slf4j; | ||
|
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| /** | ||
| * @author Mark Paluch | ||
| */ | ||
| @Component | ||
| @Slf4j | ||
| public class YouTubeClient { | ||
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| private static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport(); | ||
| private static final JsonFactory JSON_FACTORY = new JacksonFactory(); | ||
| private static final String CREDENTIALS_DIRECTORY = "oauth-credentials"; | ||
| private static final List<String> scopes = Collections.singletonList("https://www.googleapis.com/auth/youtube.readonly"); | ||
| private final GoogleClientSecrets clientSecrets; | ||
| private final LocalServerReceiver localReceiver; | ||
| private final LoadingCache<String, String> cache; | ||
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| public YouTubeClient(@Value("${server.port}") int serverPort) throws IOException { | ||
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| File file = new File("client_secret.json"); | ||
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| if (file.exists()) { | ||
| clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, new FileReader(file)); | ||
| localReceiver = new LocalServerReceiver.Builder().setPort(serverPort + 10).build(); | ||
| } else { | ||
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| log.warn("No {}, YouTubeClient disabled", file); | ||
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| clientSecrets = null; | ||
| localReceiver = null; | ||
| } | ||
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| cache = CacheBuilder.newBuilder().expireAfterWrite(1, TimeUnit.HOURS).build(new CacheLoader<String, String>() { | ||
| @Override | ||
| public String load(String s) throws Exception { | ||
| return fetchStreamingId(); | ||
| } | ||
| }); | ||
| } | ||
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| public Credential authorize() throws IOException { | ||
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| FileDataStoreFactory fileDataStoreFactory = new FileDataStoreFactory(new File(CREDENTIALS_DIRECTORY)); | ||
| DataStore<StoredCredential> datastore = fileDataStoreFactory.getDataStore("listbroadcasts"); | ||
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| GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(HTTP_TRANSPORT, JSON_FACTORY, clientSecrets, | ||
| scopes).setCredentialDataStore(datastore).build(); | ||
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| // Authorize. | ||
| return new AuthorizationCodeInstalledApp(flow, localReceiver).authorize("user"); | ||
| } | ||
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| public String getYouTubeStreamingId() { | ||
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| try { | ||
| return cache.get("youtube-streaming-id"); | ||
| } catch (ExecutionException e) { | ||
| throw new IllegalStateException(e.getCause()); | ||
| } | ||
| } | ||
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| private String fetchStreamingId() throws IOException { | ||
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| // This object is used to make YouTube Data API requests. | ||
| YouTube youtube = new YouTube.Builder(HTTP_TRANSPORT, JSON_FACTORY, authorize()).setApplicationName("heckenlights") | ||
| .build(); | ||
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| // Create a request to list broadcasts. | ||
| YouTube.LiveBroadcasts.List liveBroadcastRequest = youtube.liveBroadcasts().list("id,status"); | ||
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| // Indicate that the API response should not filter broadcasts | ||
| // based on their status. | ||
| liveBroadcastRequest.setBroadcastStatus("active"); | ||
| liveBroadcastRequest.setBroadcastType("persistent"); | ||
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| LiveBroadcastListResponse response = liveBroadcastRequest.execute(); | ||
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| if (response.getItems().isEmpty()) { | ||
| return ""; | ||
| } | ||
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| return response.getItems().get(0).getId(); | ||
| } | ||
| } |
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