// Copyright 2012 Citrix Systems, Inc. Licensed under the
// Apache License, Version 2.0 (the "License"); you may not use this
// file except in compliance with the License. Citrix Systems, Inc.
// reserves all rights not expressly granted by 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.
//
// Automatically generated by addcopyright.py at 04/03/2012
package com.cloud.agent.resource.computing;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Callable;
import org.apache.log4j.Logger;
import org.libvirt.Connect;
import com.cloud.utils.script.OutputInterpreter;
import com.cloud.utils.script.Script;
public class KVMHAChecker extends KVMHABase implements Callable<Boolean> {
private static final Logger s_logger = Logger.getLogger(KVMHAChecker.class);
private List<NfsStoragePool> _pools;
private String _hostIP;
private long _heartBeatCheckerTimeout = 360000; /* 6 minutes */
public KVMHAChecker(List<NfsStoragePool> pools, String host) {
this._pools = pools;
this._hostIP = host;
}
/*
* True means heartbeaing is on going, or we can't get it's status. False
* means heartbeating is stopped definitely
*/
private Boolean checkingHB() {
List<Boolean> results = new ArrayList<Boolean>();
for (NfsStoragePool pool : _pools) {
Script cmd = new Script(_heartBeatPath, _heartBeatCheckerTimeout,
s_logger);
cmd.add("-i", pool._poolIp);
cmd.add("-p", pool._poolMountSourcePath);
cmd.add("-m", pool._mountDestPath);
cmd.add("-h", _hostIP);
cmd.add("-r");
cmd.add("-t",
String.valueOf((_heartBeatUpdateFreq + _heartBeatUpdateTimeout) / 1000 * 2));
OutputInterpreter.OneLineParser parser = new OutputInterpreter.OneLineParser();
String result = cmd.execute(parser);
s_logger.debug("pool: " + pool._poolIp);
s_logger.debug("reture: " + result);
s_logger.debug("parser: " + parser.getLine());
if (result == null && parser.getLine().contains("> DEAD <")) {
s_logger.debug("read heartbeat failed: " + result);
results.add(false);
} else {
results.add(true);
}
}
for (Boolean r : results) {
if (r) {
return true;
}
}
return false;
}
@Override
public Boolean call() throws Exception {
// s_logger.addAppender(new org.apache.log4j.ConsoleAppender(new
// org.apache.log4j.PatternLayout(), "System.out"));
return checkingHB();
}
}