/*
* 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.config.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);
}
}
}