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package com.sun.enterprise.ee.admin.event.pluggable;
import com.sun.logging.ee.EELogDomains;
import java.util.Set;
import java.util.HashSet;
import java.util.Iterator;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.sun.enterprise.admin.target.Target;
import com.sun.enterprise.admin.target.TargetBuilder;
import com.sun.enterprise.admin.server.core.channel.RMIClient;
import com.sun.enterprise.admin.server.core.channel.AdminChannel;
import com.sun.enterprise.ee.admin.proxy.InstanceProxy;
import com.sun.enterprise.ee.admin.mbeanapi.ServerRuntimeMBean;
import com.sun.enterprise.admin.server.core.AdminService;
import com.sun.enterprise.config.serverbeans.Server;
import com.sun.enterprise.config.serverbeans.ServerHelper;
import com.sun.enterprise.admin.event.ElementChangeHelper;
import com.sun.enterprise.config.ConfigContext;
import com.sun.enterprise.ee.admin.event.EEEventDispatcher;
import com.sun.enterprise.admin.event.pluggable.RestartEventHelper;
//i18n import
import com.sun.enterprise.util.i18n.StringManager;
/**
* Restart event Helper - class providing support for informing
* server(s) to set its(their) restart required state to true or false.
*
* @author: Satish Viswanatham
*/
public class EERestartEventHelper implements RestartEventHelper{
// i18n StringManager
private static Logger _logger = null;
public EERestartEventHelper() {
}
/**
* Given a config change list, this method figures out if that list contains
* any non dynamic recofigurable changes. If there is any change which can
* not be applied dynamically, if sets the restart status on the appropriate
* target servers.
*
* @param ctx Config context of DAS
* @param list config change list
*/
public void setRestartRequiredForTarget(ConfigContext ctx,
ArrayList configChangeList ) {
try {
AdminService admServ = AdminService.getAdminService();
if ((admServ != null) && (admServ.isDas())) {
Set nonDynSet = ElementChangeHelper.
getXPathesForDynamicallyNotReconfigurableElements(
configChangeList);
Iterator iter = nonDynSet.iterator();
if (iter == null) {
getLogger().log(Level.FINE,
"EERestartEventHelper: All changes were dynamically reconfigurable");
return;
}
Set targetSet = new HashSet();
TargetBuilder tgtBldr = new TargetBuilder();
while(iter.hasNext()) {
String xpath = (String) iter.next();
String target = null;
try {
target = tgtBldr.getTargetNameForXPath(
xpath,ctx,true);
targetSet.add(target);
} catch (Exception e) {
// ignore if this is not a valid target
getLogger().log(Level.INFO,
"eeadmin.no_target_for_xpath", xpath);
}
}
// resolve the target names into server names
EEEventDispatcher eeDisp = new EEEventDispatcher();
Set svrSet = eeDisp.resolveTargets(ctx, targetSet);
// set restart required to false on those servers
setRestartRequiredForTargetInternal(ctx, svrSet, true);
}
} catch (Throwable t) {
getLogger().log(Level.INFO,"eeadmin.exception_during_restart_reset",
t);
}
}
/**
* For each physical end point, this method makes a MBean proxy call
* to the server instance to set the restart required flag.
*
* @param ctx admin config context
* @param targets set of server instance names
* @param restart true if restart required is needed
*/
private void setRestartRequiredForTargetInternal(ConfigContext ctx,
Set targets, boolean restart) {
Iterator iter = null;
if (targets != null) {
iter = targets.iterator();
}
if (iter == null) {
getLogger().log(Level.FINE,
"EERestartEventHelper: No targets found for the configuration changes");
return;
}
while (iter.hasNext()) {
String inst = (String) iter.next();
setRestartRequiredRemote(ctx, inst, true);
}
}
/**
* Invokes the remote server instance MBean proxy.
*
* @param ctx admin config context
* @param inst name of the server instance
* @param restartFlag true if restart required is needed
*/
void setRestartRequiredRemote(ConfigContext ctx, String inst,
boolean restartFlag) {
try {
// only deals with server instance now
if (ServerHelper.isAServer(ctx, inst)) {
ServerRuntimeMBean runtimeMBean =
InstanceProxy.getInstanceProxy(inst);
runtimeMBean.setRestartRequired(restartFlag);
} else {
// FIXME: handle node agent end points
}
} catch (Throwable t) {
getLogger().log(Level.FINE,"eeadmin.setrestart.exception", t);
// ignore if it can not get status
}
}
private static Logger getLogger() {
if (_logger == null) {
_logger = Logger.getLogger(EELogDomains.EE_ADMIN_LOGGER);
}
return _logger;
}
}