org.apache.streams.amazon.kinesis.KinesisPersistWriter.java Source code

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Here is the source code for org.apache.streams.amazon.kinesis.KinesisPersistWriter.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
 * 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.amazon.kinesis;

import org.apache.streams.config.ComponentConfigurator;
import org.apache.streams.config.StreamsConfigurator;
import org.apache.streams.converter.TypeConverterUtil;
import org.apache.streams.core.StreamsDatum;
import org.apache.streams.core.StreamsPersistWriter;

import com.amazonaws.ClientConfiguration;
import com.amazonaws.Protocol;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.regions.Region;
import com.amazonaws.regions.Regions;
import com.amazonaws.services.kinesis.AmazonKinesisClient;
import com.amazonaws.services.kinesis.model.PutRecordRequest;
import com.amazonaws.services.kinesis.model.PutRecordResult;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.typesafe.config.Config;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.math.BigInteger;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.Queue;
import java.util.concurrent.ConcurrentLinkedQueue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

/**
 * KinesisPersistWriter writes documents to kinesis.
 */
public class KinesisPersistWriter implements StreamsPersistWriter {

    public static final String STREAMS_ID = "KinesisPersistWriter";

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

    protected volatile Queue<StreamsDatum> persistQueue;

    private ObjectMapper mapper = new ObjectMapper();

    private KinesisWriterConfiguration config;

    private List<String> streamName;

    private ExecutorService executor;

    protected AmazonKinesisClient client;

    /**
     * KinesisPersistWriter constructor - resolves KinesisWriterConfiguration from JVM 'kinesis'.
     */
    public KinesisPersistWriter() {
        Config config = StreamsConfigurator.getConfig().getConfig("kinesis");
        this.config = new ComponentConfigurator<>(KinesisWriterConfiguration.class).detectConfiguration(config);
        this.persistQueue = new ConcurrentLinkedQueue<>();
    }

    /**
     * KinesisPersistWriter constructor - uses provided KinesisWriterConfiguration.
     */
    public KinesisPersistWriter(KinesisWriterConfiguration config) {
        this.config = config;
        this.persistQueue = new ConcurrentLinkedQueue<>();
    }

    public void setConfig(KinesisWriterConfiguration config) {
        this.config = config;
    }

    @Override
    public String getId() {
        return STREAMS_ID;
    }

    @Override
    public void write(StreamsDatum entry) {

        String document = (String) TypeConverterUtil.getInstance().convert(entry.getDocument(), String.class);

        PutRecordRequest putRecordRequest = new PutRecordRequest().withStreamName(config.getStream())
                .withPartitionKey(entry.getId()).withData(ByteBuffer.wrap(document.getBytes()));

        PutRecordResult putRecordResult = client.putRecord(putRecordRequest);

        entry.setSequenceid(new BigInteger(putRecordResult.getSequenceNumber()));

        LOGGER.debug("Wrote {}", entry);
    }

    @Override
    public void prepare(Object configurationObject) {
        // Connect to Kinesis
        synchronized (this) {
            // Create the credentials Object
            AWSCredentials credentials = new BasicAWSCredentials(config.getKey(), config.getSecretKey());

            ClientConfiguration clientConfig = new ClientConfiguration();
            clientConfig.setProtocol(Protocol.valueOf(config.getProtocol().toString()));

            this.client = new AmazonKinesisClient(credentials, clientConfig);
            if (StringUtils.isNotEmpty(config.getRegion())) {
                this.client.setRegion(Region.getRegion(Regions.fromName(config.getRegion())));
            }
        }
        executor = Executors.newSingleThreadExecutor();

    }

    @Override
    public void cleanUp() {
        try {
            executor.awaitTermination(5, TimeUnit.SECONDS);
        } catch (InterruptedException ex) {
            LOGGER.debug("Interrupted! ", ex);
        }
    }
}