/*
* Copyright 2012 NGDATA nv
*
* Licensed 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 com.ngdata.sep.demo;
import java.util.List;
import com.ngdata.sep.EventListener;
import com.ngdata.sep.PayloadExtractor;
import com.ngdata.sep.SepEvent;
import com.ngdata.sep.SepModel;
import com.ngdata.sep.impl.BasePayloadExtractor;
import com.ngdata.sep.impl.SepConsumer;
import com.ngdata.sep.impl.SepModelImpl;
import com.ngdata.sep.util.zookeeper.ZkUtil;
import com.ngdata.sep.util.zookeeper.ZooKeeperItf;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.util.Bytes;
/**
* A simple consumer that just logs the events.
*/
public class LoggingConsumer {
public static void main(String[] args) throws Exception {
Configuration conf = HBaseConfiguration.create();
conf.setBoolean("hbase.replication", true);
ZooKeeperItf zk = ZkUtil.connect("localhost", 20000);
SepModel sepModel = new SepModelImpl(zk, conf);
final String subscriptionName = "logger";
if (!sepModel.hasSubscription(subscriptionName)) {
sepModel.addSubscriptionSilent(subscriptionName);
}
PayloadExtractor payloadExtractor = new BasePayloadExtractor(Bytes.toBytes("sep-user-demo"), Bytes.toBytes("info"),
Bytes.toBytes("payload"));
SepConsumer sepConsumer = new SepConsumer(subscriptionName, 0, new EventLogger(), 1, "localhost", zk, conf,
payloadExtractor);
sepConsumer.start();
System.out.println("Started");
while (true) {
Thread.sleep(Long.MAX_VALUE);
}
}
private static class EventLogger implements EventListener {
@Override
public void processEvents(List<SepEvent> sepEvents) {
for (SepEvent sepEvent : sepEvents) {
System.out.println("Received event:");
System.out.println(" table = " + Bytes.toString(sepEvent.getTable()));
System.out.println(" row = " + Bytes.toString(sepEvent.getRow()));
System.out.println(" payload = " + Bytes.toString(sepEvent.getPayload()));
System.out.println(" key values = ");
for (KeyValue kv : sepEvent.getKeyValues()) {
System.out.println(" " + kv.toString());
}
}
}
}
}