org.apache.streams.elasticsearch.example.ElasticsearchPercolateTagger.java Source code

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Here is the source code for org.apache.streams.elasticsearch.example.ElasticsearchPercolateTagger.java

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/*
 * 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.elasticsearch.example;

import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.common.util.concurrent.MoreExecutors;
import com.typesafe.config.Config;
import org.apache.streams.config.StreamsConfigurator;
import org.apache.streams.core.StreamsDatum;
import org.apache.streams.elasticsearch.*;
import org.apache.streams.core.StreamBuilder;
import org.apache.streams.elasticsearch.processor.PercolateTagProcessor;
import org.apache.streams.local.builders.LocalStreamBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.concurrent.*;

/**
 * Created by sblackmon on 12/10/13.
 */
public class ElasticsearchPercolateTagger {

    public final static String STREAMS_ID = "ElasticsearchPercolateTag";

    private final static Logger LOGGER = LoggerFactory.getLogger(ElasticsearchPercolateTagger.class);

    private final static ObjectMapper mapper = new ObjectMapper();

    protected ListeningExecutorService executor = MoreExecutors
            .listeningDecorator(newFixedThreadPoolWithQueueSize(5, 20));

    private static ExecutorService newFixedThreadPoolWithQueueSize(int nThreads, int queueSize) {
        return new ThreadPoolExecutor(nThreads, nThreads, 5000L, TimeUnit.MILLISECONDS,
                new ArrayBlockingQueue<Runnable>(queueSize, true), new ThreadPoolExecutor.CallerRunsPolicy());
    }

    public static void main(String[] args) {
        LOGGER.info(StreamsConfigurator.config.toString());

        Config reindex = StreamsConfigurator.config.getConfig("reindex");

        Config source = reindex.getConfig("source");
        Config destination = reindex.getConfig("destination");

        ElasticsearchReaderConfiguration elasticsearchSourceConfiguration = ElasticsearchConfigurator
                .detectReaderConfiguration(source);

        ElasticsearchPersistReader elasticsearchPersistReader = new ElasticsearchPersistReader(
                elasticsearchSourceConfiguration);

        ElasticsearchWriterConfiguration elasticsearchDestinationConfiguration = ElasticsearchConfigurator
                .detectWriterConfiguration(destination);

        PercolateTagProcessor percolateTagProcessor = new PercolateTagProcessor(
                elasticsearchDestinationConfiguration);

        ElasticsearchPersistWriter elasticsearchPersistWriter = new ElasticsearchPersistWriter(
                elasticsearchDestinationConfiguration);

        StreamBuilder builder = new LocalStreamBuilder(new LinkedBlockingQueue<StreamsDatum>(1000));

        builder.newPerpetualStream(ElasticsearchPersistReader.STREAMS_ID, elasticsearchPersistReader);
        builder.addStreamsProcessor(PercolateTagProcessor.STREAMS_ID, percolateTagProcessor, 1,
                ElasticsearchPersistReader.STREAMS_ID);
        builder.addStreamsPersistWriter(ElasticsearchPersistWriter.STREAMS_ID, elasticsearchPersistWriter, 1,
                PercolateTagProcessor.STREAMS_ID);
        builder.start();

    }

}