/*
* 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
*
* 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 org.apache.streams.youtube.provider;
import org.apache.streams.config.ComponentConfigurator;
import org.apache.streams.config.StreamsConfiguration;
import org.apache.streams.config.StreamsConfigurator;
import org.apache.streams.core.StreamsDatum;
import org.apache.streams.google.gplus.configuration.UserInfo;
import org.apache.streams.jackson.StreamsJacksonMapper;
import org.apache.streams.util.api.requests.backoff.BackOffStrategy;
import org.apache.streams.youtube.YoutubeConfiguration;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.api.services.youtube.YouTube;
import com.google.common.base.Preconditions;
import com.google.common.util.concurrent.Uninterruptibles;
import com.typesafe.config.Config;
import com.typesafe.config.ConfigFactory;
import com.typesafe.config.ConfigParseOptions;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.TimeUnit;
/**
* Retrieve recent activity from a list of channels.
*/
public class YoutubeChannelProvider extends YoutubeProvider {
public YoutubeChannelProvider() {
super();
}
public YoutubeChannelProvider(YoutubeConfiguration config) {
super(config);
}
/**
* To use from command line:
* <p/>
* Supply (at least) the following required configuration in application.conf:
* <p/>
* youtube.oauth.pathToP12KeyFile
* youtube.oauth.serviceAccountEmailAddress
* youtube.apiKey
* youtube.youtubeUsers
* <p/>
* Launch using:
* <p/>
* mvn exec:java -Dexec.mainClass=org.apache.streams.youtube.provider.YoutubeUserActivityProvider -Dexec.args="application.conf tweets.json"
* @param args args
* @throws Exception Exception
*/
public static void main(String[] args) throws Exception {
Preconditions.checkArgument(args.length >= 2);
String configfile = args[0];
String outfile = args[1];
Config reference = ConfigFactory.load();
File file = new File(configfile);
assert (file.exists());
Config testResourceConfig = ConfigFactory.parseFileAnySyntax(file, ConfigParseOptions.defaults().setAllowMissing(false));
Config typesafe = testResourceConfig.withFallback(reference).resolve();
StreamsConfiguration streamsConfiguration = StreamsConfigurator.detectConfiguration(typesafe);
YoutubeConfiguration config = new ComponentConfigurator<>(YoutubeConfiguration.class).detectConfiguration(typesafe, "youtube");
YoutubeChannelProvider provider = new YoutubeChannelProvider(config);
ObjectMapper mapper = StreamsJacksonMapper.getInstance();
PrintStream outStream = new PrintStream(new BufferedOutputStream(new FileOutputStream(outfile)));
provider.prepare(config);
provider.startStream();
do {
Uninterruptibles.sleepUninterruptibly(streamsConfiguration.getBatchFrequencyMs(), TimeUnit.MILLISECONDS);
for (StreamsDatum datum : provider.readCurrent()) {
String json;
try {
if (datum.getDocument() instanceof String) {
json = (String) datum.getDocument();
} else {
json = mapper.writeValueAsString(datum.getDocument());
}
outStream.println(json);
} catch (JsonProcessingException ex) {
System.err.println(ex.getMessage());
}
}
}
while (provider.isRunning());
provider.cleanUp();
outStream.flush();
}
@Override
protected Runnable getDataCollector(BackOffStrategy strategy, BlockingQueue<StreamsDatum> queue, YouTube youtube, UserInfo userInfo) {
return new YoutubeChannelDataCollector(youtube, queue, strategy, userInfo, this.config);
}
}