package org.apache.blur.agent.collectors.hdfs;
/**
* 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.
*/
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;
import org.apache.blur.agent.Agent;
import org.apache.blur.agent.connections.hdfs.interfaces.HdfsDatabaseInterface;
import org.apache.blur.agent.exceptions.HdfsThreadException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
public class HdfsCollector implements Runnable {
private static final Log log = LogFactory.getLog(HdfsCollector.class);
private final URI defaultUri;
private final String hdfsName;
private final String user;
private final HdfsDatabaseInterface databaseConnection;
private final boolean collectHdfs;
public HdfsCollector(final String hdfsName, final String defaultUri, final String thriftUri, final String user,
final List<String> activeCollectors, final HdfsDatabaseInterface databaseConnection) throws HdfsThreadException {
try {
this.defaultUri = new URI(defaultUri);
this.hdfsName = hdfsName;
this.user = user;
this.databaseConnection = databaseConnection;
this.collectHdfs = activeCollectors.contains("hdfs");
initializeHdfs(hdfsName, thriftUri);
} catch (URISyntaxException e) {
log.error(e.getMessage(), e);
throw new HdfsThreadException();
} catch (Exception e) {
log.error("An unkown error occured while creating the collector.", e);
throw new HdfsThreadException();
}
}
@Override
public void run() {
while (true) {
if (this.collectHdfs) {
new Thread(new HdfsStatsCollector(this.hdfsName, defaultUri, this.user, this.databaseConnection), "Hdfs Collector - "
+ this.hdfsName).start();
}
try {
Thread.sleep(Agent.COLLECTOR_SLEEP_TIME);
} catch (InterruptedException e) {
break;
}
}
}
private void initializeHdfs(String name, String thriftUri) throws URISyntaxException {
URI parsedThriftUri = new URI(thriftUri);
this.databaseConnection.setHdfsInfo(name, parsedThriftUri.getHost(), parsedThriftUri.getPort());
}
}