/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package org.rhq.plugins.iis.util;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hyperic.sigar.win32.Service;
import org.hyperic.sigar.win32.Win32Exception;
import org.rhq.core.domain.measurement.AvailabilityType;
/**
* Support for starting and stopping windows services along with their dependencies and dependents.
*
* @author Greg Hinkle
*/
public class Win32ServiceControlDelegate {
private Log log = LogFactory.getLog(Win32ServiceControlDelegate.class);
private String serviceName;
private List<String> dependencies;
private List<String> reverseDependencies;
private List<String> dependents;
private List<String> reverseDependents;
private Service service;
private long timeout;
public Win32ServiceControlDelegate(String serviceName, long timeout) throws Win32Exception {
this(serviceName, null, null, timeout);
}
public Win32ServiceControlDelegate(String serviceName, List<String> dependencies, List<String> dependents,
long timeout) throws Win32Exception {
log.debug("serviceName = " + serviceName);
log.debug("serviceDependencies = " + (dependencies == null ? "none" : dependencies));
log.debug("serviceDependents = " + (dependents == null ? "none" : dependents));
log.debug("serviceOperationTimeout = " + timeout + " ms");
this.serviceName = serviceName;
this.dependencies = dependencies;
if (dependencies != null) {
this.reverseDependencies = new ArrayList<String>(dependencies);
Collections.reverse(this.reverseDependencies);
}
this.dependents = dependents;
if (dependents != null) {
this.reverseDependents = new ArrayList<String>(dependents);
Collections.reverse(this.dependents);
}
this.timeout = timeout;
service = new Service(serviceName);
}
public AvailabilityType getAvailabilityType() {
return getAvailability(this.service);
}
public void start() throws Win32Exception {
startServices(dependencies);
service.start();
startServices(dependents);
}
public void stop() throws Win32Exception {
stopServices(reverseDependents);
service.stop();
stopServices(reverseDependencies);
}
public void restart() throws Win32Exception {
stop();
start();
}
protected void startServices(List<String> services) {
if (services == null)
return;
log.debug("Starting list of services for Service [" + serviceName + "], services [" + services + "]");
for (String relatedServiceName : services) {
try {
Service relatedService = new Service(relatedServiceName);
int relatedServiceStatus = relatedService.getStatus();
if (relatedServiceStatus == Service.SERVICE_STOPPED
|| relatedServiceStatus == Service.SERVICE_STOP_PENDING) {
log.debug("Starting Service [" + relatedServiceName + "]");
relatedService.start(this.timeout);
log.debug("Service started [" + relatedServiceName + "]");
relatedService.close();
}
} catch (Exception e) {
log.warn("Unable to start [" + relatedServiceName + "] from the list [" + services
+ "]. Will continue with the rest. Cause:" + e);
}
}
}
protected void stopServices(List<String> services) {
if (services == null)
return;
log.debug("Stopping list of services for Service [" + serviceName + "], services [" + services + "]");
for (String relatedServiceName : services) {
try {
Service relatedService = new Service(relatedServiceName);
int relatedServiceStatus = relatedService.getStatus();
if (!(relatedServiceStatus == Service.SERVICE_STOPPED || relatedServiceStatus == Service.SERVICE_STOP_PENDING)) {
log.debug("Stopping Service [" + relatedServiceName + "]");
relatedService.stop(this.timeout);
log.debug("Service stopped [" + relatedServiceName + "]");
relatedService.close();
}
} catch (Exception e) {
log.warn("Unable to stop [" + relatedServiceName + "] from the list [" + services
+ "]. Will continue with the rest. Cause:" + e);
}
}
}
protected AvailabilityType getAvailability(Service service) {
switch (service.getStatus()) {
case Service.SERVICE_START_PENDING:
case Service.SERVICE_STOP_PENDING:
case Service.SERVICE_RUNNING:
return AvailabilityType.UP;
case Service.SERVICE_STOPPED:
case Service.SERVICE_CONTINUE_PENDING:
case Service.SERVICE_PAUSE_PENDING:
case Service.SERVICE_PAUSED:
default:
return AvailabilityType.DOWN;
}
}
}