/*
* 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
*
* 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.facebook.provider.page;
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.facebook.FacebookConfiguration;
import org.apache.streams.facebook.FacebookPageProviderConfiguration;
import org.apache.streams.facebook.provider.FacebookDataCollector;
import org.apache.streams.facebook.provider.FacebookProvider;
import org.apache.streams.jackson.StreamsJacksonMapper;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.annotations.VisibleForTesting;
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 org.slf4j.Logger;
import org.slf4j.LoggerFactory;
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;
/**
* Streams Provider which collects Page Profiles in the ID List contained in the
* FacebookConfiguration object
*
* <p/>
* To use from command line,
*
* <p/>
* Launch using:
*
* <p/>
* mvn exec:java -Dexec.mainClass=org.apache.streams.facebook.provider.page.FacebookPageProvider -Dexec.args="application.conf pages.json"
*
* <p/>
* Supply (at least) the following required configuration in application.conf:
*
* <p>
* facebook.oauth.appId
* facebook.oauth.appSecret
* facebook.oauth.userAccessToken
* </p>
*/
public class FacebookPageProvider extends FacebookProvider {
public static final String STREAMS_ID = "FacebookPageProvider";
private static final Logger LOGGER = LoggerFactory.getLogger(FacebookPageProvider.class);
private static ObjectMapper MAPPER = StreamsJacksonMapper.getInstance();
private FacebookPageProviderConfiguration configuration;
public FacebookPageProvider(FacebookConfiguration facebookConfiguration) {
super(facebookConfiguration);
}
@VisibleForTesting
BlockingQueue<StreamsDatum> getQueue() {
return super.datums;
}
@Override
protected FacebookDataCollector getDataCollector() {
return new FacebookPageDataCollector(super.datums, super.configuration);
}
/**
* Run FacebookPageProvider from command line.
* @param args configfile outfile
* @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 confFile = new File(configfile);
assert (confFile.exists());
Config conf = ConfigFactory.parseFileAnySyntax(confFile, ConfigParseOptions.defaults().setAllowMissing(false));
Config typesafe = conf.withFallback(reference).resolve();
StreamsConfiguration streamsConfiguration = StreamsConfigurator.detectConfiguration(typesafe);
FacebookConfiguration config = new ComponentConfigurator<>(FacebookConfiguration.class).detectConfiguration(typesafe, "facebook");
FacebookPageProvider provider = new FacebookPageProvider(config);
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 {
json = MAPPER.writeValueAsString(datum.getDocument());
outStream.println(json);
} catch (JsonProcessingException ex) {
System.err.println(ex.getMessage());
}
}
}
while ( provider.isRunning());
provider.cleanUp();
outStream.flush();
}
}