| package org.apache.streams.examples.flink.twitter.collection |
| |
| import java.io.Serializable |
| import java.util.concurrent.TimeUnit |
| |
| import com.fasterxml.jackson.databind.ObjectMapper |
| import com.google.common.base.{Preconditions, Strings} |
| import com.google.common.util.concurrent.Uninterruptibles |
| import org.apache.flink.api.common.functions.StoppableFunction |
| import org.apache.flink.configuration.Configuration |
| import org.apache.flink.core.fs.FileSystem |
| import org.apache.flink.streaming.api.TimeCharacteristic |
| import org.apache.flink.streaming.api.functions.source.{RichSourceFunction, SourceFunction} |
| import org.apache.flink.streaming.api.scala.{DataStream, KeyedStream, StreamExecutionEnvironment} |
| import org.apache.flink.streaming.connectors.fs.RollingSink |
| import org.apache.streams.config.{ComponentConfigurator, StreamsConfigurator} |
| import org.apache.streams.core.StreamsDatum |
| import org.apache.streams.examples.flink.FlinkBase |
| import org.apache.streams.examples.flink.twitter.TwitterSpritzerPipelineConfiguration |
| import org.apache.streams.flink.FlinkStreamingConfiguration |
| import org.apache.streams.jackson.StreamsJacksonMapper |
| import org.apache.streams.twitter.TwitterStreamConfiguration |
| import org.apache.streams.twitter.provider.TwitterStreamProvider |
| import org.slf4j.{Logger, LoggerFactory} |
| import org.apache.flink.api.scala._ |
| import org.apache.streams.twitter.converter.TwitterDateTimeFormat |
| |
| import scala.collection.JavaConversions._ |
| |
| /** |
| * Created by sblackmon on 7/29/15. |
| */ |
| object FlinkTwitterSpritzerPipeline extends FlinkBase { |
| |
| val STREAMS_ID: String = "FlinkTwitterSpritzerPipeline" |
| |
| private val LOGGER: Logger = LoggerFactory.getLogger(classOf[FlinkTwitterPostsPipeline]) |
| private val MAPPER: ObjectMapper = StreamsJacksonMapper.getInstance() |
| |
| override def main(args: Array[String]) = { |
| super.main(args) |
| val jobConfig = new ComponentConfigurator(classOf[TwitterSpritzerPipelineConfiguration]).detectConfiguration(typesafe) |
| if( setup(jobConfig) == false ) System.exit(1) |
| val pipeline: FlinkTwitterSpritzerPipeline = new FlinkTwitterSpritzerPipeline(jobConfig) |
| val thread = new Thread(pipeline) |
| thread.start() |
| thread.join() |
| } |
| |
| def setup(jobConfig: TwitterSpritzerPipelineConfiguration): Boolean = { |
| |
| LOGGER.info("TwitterSpritzerPipelineConfiguration: " + jobConfig) |
| |
| if( jobConfig == null ) { |
| LOGGER.error("jobConfig is null!") |
| System.err.println("jobConfig is null!") |
| return false |
| } |
| |
| if( jobConfig.getDestination == null ) { |
| LOGGER.error("jobConfig.getDestination is null!") |
| System.err.println("jobConfig.getDestination is null!") |
| return false |
| } |
| |
| if( jobConfig.getTwitter == null ) { |
| LOGGER.error("jobConfig.getTwitter is null!") |
| System.err.println("jobConfig.getTwitter is null!") |
| return false |
| } |
| |
| Preconditions.checkNotNull(jobConfig.getTwitter.getOauth) |
| Preconditions.checkArgument(!Strings.isNullOrEmpty(jobConfig.getTwitter.getOauth.getAccessToken)) |
| Preconditions.checkArgument(!Strings.isNullOrEmpty(jobConfig.getTwitter.getOauth.getAccessTokenSecret)) |
| Preconditions.checkArgument(!Strings.isNullOrEmpty(jobConfig.getTwitter.getOauth.getConsumerKey)) |
| Preconditions.checkArgument(!Strings.isNullOrEmpty(jobConfig.getTwitter.getOauth.getConsumerSecret)) |
| |
| return true |
| |
| } |
| |
| } |
| |
| class FlinkTwitterSpritzerPipeline(config: TwitterSpritzerPipelineConfiguration = new ComponentConfigurator(classOf[TwitterSpritzerPipelineConfiguration]).detectConfiguration(StreamsConfigurator.getConfig)) extends Runnable with java.io.Serializable { |
| |
| import FlinkTwitterSpritzerPipeline._ |
| |
| val spritzerSource = new SpritzerSource(config.getTwitter) |
| |
| override def run(): Unit = { |
| |
| val env: StreamExecutionEnvironment = streamEnvironment(MAPPER.convertValue(config, classOf[FlinkStreamingConfiguration])) |
| |
| env.setStreamTimeCharacteristic(TimeCharacteristic.IngestionTime); |
| env.setNumberOfExecutionRetries(0) |
| |
| val outPath = buildWriterPath(config.getDestination) |
| |
| val streamSource : DataStream[String] = env.addSource(spritzerSource); |
| |
| if( config.getTest == false ) |
| streamSource.addSink(new RollingSink[String](outPath)).setParallelism(3).name("hdfs") |
| else |
| streamSource.writeAsText(outPath,FileSystem.WriteMode.OVERWRITE) |
| .setParallelism(env.getParallelism); |
| |
| // if( test == true ) jsons.print(); |
| |
| env.execute(STREAMS_ID) |
| |
| } |
| |
| def stop(): Unit = { |
| spritzerSource.stop() |
| } |
| |
| class SpritzerSource(sourceConfig: TwitterStreamConfiguration) extends RichSourceFunction[String] with Serializable with StoppableFunction { |
| |
| var mapper: ObjectMapper = _ |
| |
| var twitProvider: TwitterStreamProvider = _ |
| |
| @throws[Exception] |
| override def open(parameters: Configuration): Unit = { |
| mapper = StreamsJacksonMapper.getInstance(TwitterDateTimeFormat.TWITTER_FORMAT) |
| twitProvider = new TwitterStreamProvider( sourceConfig ) |
| twitProvider.prepare(twitProvider) |
| twitProvider.startStream() |
| } |
| |
| override def run(ctx: SourceFunction.SourceContext[String]): Unit = { |
| var iterator: Iterator[StreamsDatum] = null |
| do { |
| Uninterruptibles.sleepUninterruptibly(config.getProviderWaitMs, TimeUnit.MILLISECONDS) |
| iterator = twitProvider.readCurrent().iterator() |
| iterator.toList.map(datum => ctx.collect(mapper.writeValueAsString(datum.getDocument))) |
| } while( twitProvider.isRunning ) |
| } |
| |
| override def cancel(): Unit = { |
| close() |
| } |
| |
| override def stop(): Unit = { |
| close(); |
| } |
| } |
| |
| |
| } |