// 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 com.cloud.cluster;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.rmi.RemoteException;
import java.util.Map;
import java.util.Properties;
import javax.ejb.Local;
import javax.naming.ConfigurationException;
import org.apache.log4j.Logger;
import com.cloud.cluster.dao.ManagementServerHostDao;
import com.cloud.configuration.Config;
import com.cloud.configuration.dao.ConfigurationDao;
import com.cloud.utils.NumbersUtil;
import com.cloud.utils.PropertiesUtil;
import com.cloud.utils.component.ComponentLocator;
@Local(value={ClusterServiceAdapter.class})
public class ClusterServiceServletAdapter implements ClusterServiceAdapter {
private static final Logger s_logger = Logger.getLogger(ClusterServiceServletAdapter.class);
private static final int DEFAULT_SERVICE_PORT = 9090;
private static final int DEFAULT_REQUEST_TIMEOUT = 300; // 300 seconds
private ClusterManager _manager;
private ManagementServerHostDao _mshostDao;
private ConfigurationDao _configDao;
private ClusterServiceServletContainer _servletContainer;
private String _name;
private int _clusterServicePort = DEFAULT_SERVICE_PORT;
private int _clusterRequestTimeoutSeconds = DEFAULT_REQUEST_TIMEOUT;
@Override
public ClusterService getPeerService(String strPeer) throws RemoteException {
try {
init();
} catch (ConfigurationException e) {
s_logger.error("Unable to init ClusterServiceServletAdapter");
throw new RemoteException("Unable to init ClusterServiceServletAdapter");
}
String serviceUrl = getServiceEndpointName(strPeer);
if(serviceUrl == null)
return null;
return new ClusterServiceServletImpl(serviceUrl, _clusterRequestTimeoutSeconds);
}
@Override
public String getServiceEndpointName(String strPeer) {
try {
init();
} catch (ConfigurationException e) {
s_logger.error("Unable to init ClusterServiceServletAdapter");
return null;
}
long msid = Long.parseLong(strPeer);
ManagementServerHostVO mshost = _mshostDao.findByMsid(msid);
if(mshost == null)
return null;
return composeEndpointName(mshost.getServiceIP(), mshost.getServicePort());
}
@Override
public int getServicePort() {
return _clusterServicePort;
}
private String composeEndpointName(String nodeIP, int port) {
StringBuffer sb = new StringBuffer();
sb.append("http://").append(nodeIP).append(":").append(port).append("/clusterservice");
return sb.toString();
}
@Override
public boolean configure(String name, Map<String, Object> params) throws ConfigurationException {
_name = name;
init();
return true;
}
@Override
public String getName() {
return _name;
}
@Override
public boolean start() {
_servletContainer = new ClusterServiceServletContainer();
_servletContainer.start(new ClusterServiceServletHttpHandler(_manager), _clusterServicePort);
return true;
}
@Override
public boolean stop() {
if(_servletContainer != null)
_servletContainer.stop();
return true;
}
private void init() throws ConfigurationException {
if(_mshostDao != null)
return;
ComponentLocator locator = ComponentLocator.getCurrentLocator();
_manager = locator.getManager(ClusterManager.class);
if(_manager == null)
throw new ConfigurationException("Unable to get " + ClusterManager.class.getName());
_mshostDao = locator.getDao(ManagementServerHostDao.class);
if(_mshostDao == null)
throw new ConfigurationException("Unable to get " + ManagementServerHostDao.class.getName());
if(_mshostDao == null)
throw new ConfigurationException("Unable to get " + ManagementServerHostDao.class.getName());
_configDao = locator.getDao(ConfigurationDao.class);
if(_configDao == null)
throw new ConfigurationException("Unable to get " + ConfigurationDao.class.getName());
String value = _configDao.getValue(Config.ClusterMessageTimeOutSeconds.key());
_clusterRequestTimeoutSeconds = NumbersUtil.parseInt(value, DEFAULT_REQUEST_TIMEOUT);
s_logger.info("Configure cluster request time out. timeout: " + _clusterRequestTimeoutSeconds + " seconds");
File dbPropsFile = PropertiesUtil.findConfigFile("db.properties");
Properties dbProps = new Properties();
try {
dbProps.load(new FileInputStream(dbPropsFile));
} catch (FileNotFoundException e) {
throw new ConfigurationException("Unable to find db.properties");
} catch (IOException e) {
throw new ConfigurationException("Unable to load db.properties content");
}
_clusterServicePort = NumbersUtil.parseInt(dbProps.getProperty("cluster.servlet.port"), DEFAULT_SERVICE_PORT);
if(s_logger.isInfoEnabled())
s_logger.info("Cluster servlet port : " + _clusterServicePort);
}
}