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* 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 org.apache.kalumet.agent.updater;
import org.apache.kalumet.KalumetException;
import org.apache.kalumet.agent.Configuration;
import org.apache.kalumet.agent.utils.EventUtils;
import org.apache.kalumet.model.*;
import org.apache.kalumet.model.JEEApplication;
import org.apache.kalumet.model.update.UpdateLog;
import org.apache.kalumet.model.update.UpdateMessage;
import org.apache.kalumet.utils.NotifierUtils;
import org.apache.kalumet.utils.PublisherUtils;
import org.apache.kalumet.utils.VariableUtils;
import org.apache.kalumet.ws.client.ClientException;
import org.apache.kalumet.ws.client.ContentManagerClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.reflect.Method;
import java.util.Iterator;
/**
* Content manager updater.
*/
public class ContentManagerUpdater
{
private static final transient Logger LOGGER = LoggerFactory.getLogger( ContentManagerUpdater.class );
/**
* Update a content manager.
*
* @param environment the target Environment.
* @param server the target JEEApplicationServer.
* @param application the target JEEApplication.
* @param contentManager the target ContentManager.
* @param updateLog the UpdateLog to use.
* @throws UpdateException in case of update failure.
*/
public static void update( Environment environment, JEEApplicationServer server, JEEApplication application,
ContentManager contentManager, UpdateLog updateLog )
throws UpdateException
{
LOGGER.info( "Updating content manager {}", contentManager.getName() );
updateLog.addUpdateMessage( new UpdateMessage( "info", "Updating content manager " + contentManager.getName() ) );
EventUtils.post( environment, "UPDATE", "Updating content manager " + contentManager.getName() );
if ( !contentManager.isActive() )
{
// the content manager is not active
LOGGER.info( "Content manager {} is inactive, so not updated", contentManager.getName() );
updateLog.addUpdateMessage(
new UpdateMessage( "info", "Content manager " + contentManager.getName() + " is inactive, so not updated" ) );
EventUtils.post( environment, "UPDATE",
"Content manager " + contentManager.getName() + " is inactive, so not updated" );
return;
}
if ( contentManager.getAgent() != null && contentManager.getAgent().trim().length() > 0
&& !contentManager.getAgent().equals( Configuration.AGENT_ID ) )
{
// the content manager update is delegated to another agent
LOGGER.info( "Delegating content manager {} update to agent {}", contentManager.getName(),
contentManager.getAgent() );
updateLog.addUpdateMessage( new UpdateMessage( "info", "Delegating content manager " + contentManager.getName()
+ " update to agent " + contentManager.getAgent() ) );
EventUtils.post( environment, "UPDATE",
"Delegating content manager " + contentManager.getName() + " update to agent "
+ contentManager.getAgent() );
Agent delegationAgent = Configuration.CONFIG_CACHE.getAgent( contentManager.getAgent() );
if ( delegationAgent == null )
{
// the content manager agent is not found in the configuration
LOGGER.error( "Agent {} is not found in the configuration", contentManager.getAgent() );
throw new UpdateException( "Agent " + contentManager.getAgent() + " is not found in the configuration" );
}
try
{
// call agent WebService
LOGGER.debug( "Calling content manager WebService WS" );
ContentManagerClient client =
new ContentManagerClient( delegationAgent.getHostname(), delegationAgent.getPort() );
client.update( environment.getName(), server.getName(), application.getName(), contentManager.getName(), true );
}
catch ( ClientException clientException )
{
LOGGER.error( "Content manager {} update failed", contentManager.getName(), clientException );
throw new UpdateException( "Content manager " + contentManager.getName() + " update failed", clientException );
}
return;
}
try
{
LOGGER.debug( "Loading content manager class name" );
Class contentManagerClass =
Class.forName( VariableUtils.replace( contentManager.getClassname(), environment.getVariables() ) );
Object contentManagerObject = contentManagerClass.newInstance();
// call method properties
for ( Iterator propertyIterator = contentManager.getProperties().iterator(); propertyIterator.hasNext(); )
{
Property property = (Property) propertyIterator.next();
Method method = contentManagerClass.getMethod(
"set" + VariableUtils.replace( property.getName(), environment.getVariables() ),
new Class[]{ String.class } );
method.invoke( contentManagerObject,
new Object[]{ VariableUtils.replace( property.getValue(), environment.getVariables() ) } );
}
// call main method
Method mainMethod = contentManagerClass.getMethod( "main", new Class[]{ } );
mainMethod.invoke( contentManagerObject, new Object[]{ } );
LOGGER.info( "Content manager {} updated", contentManager.getName() );
updateLog.setStatus( "update performed" );
updateLog.setUpdated( true );
updateLog.addUpdateMessage(
new UpdateMessage( "info", "Content manager " + contentManager.getName() + " updated" ) );
EventUtils.post( environment, "UPDATE", "Content manager " + contentManager.getName() + " updated" );
}
catch ( Exception e )
{
LOGGER.error( "Content manager {} update failed", contentManager.getName(), e );
throw new UpdateException( "Content manager " + contentManager.getName() + " update failed", e );
}
}
/**
* Wrapper method to update a content manager via WS.
*
* @param environmentName the target environment name.
* @param serverName the target JEE application server name.
* @param applicationName the target JEE application name.
* @param contentManagerName the target content manager name.
* @param delegation flag indicating if the update is called by another agent (true) or by a client (false).
* @throws KalumetException in case of update failure.
*/
public static void update( String environmentName, String serverName, String applicationName,
String contentManagerName, boolean delegation )
throws KalumetException
{
LOGGER.info( "Content manager {} update requested by WS", contentManagerName );
// load configuration.
LOGGER.debug( "Loading configuration" );
Kalumet kalumet = Kalumet.digeste( Configuration.CONFIG_LOCATION );
// looking for component objects.
Environment environment = kalumet.getEnvironment( environmentName );
if ( environment == null )
{
LOGGER.error( "Environment {} is not found in the configuration", environmentName );
throw new KalumetException( "Environment " + environmentName + " is not found in the configuration" );
}
JEEApplicationServer applicationServer =
environment.getJEEApplicationServers().getJEEApplicationServer( serverName );
if ( applicationServer == null )
{
LOGGER.error( "JEE application server {} is not found in environment {}", serverName, environment.getName() );
throw new KalumetException(
"JEE application server " + serverName + " is not found in environment " + environment.getName() );
}
JEEApplication application = applicationServer.getJEEApplication( applicationName );
if ( application == null )
{
LOGGER.error( "JEE application {} is not found in JEE application server {}", applicationName,
applicationServer.getName() );
throw new KalumetException( "JEE application " + applicationName + " is not found in JEE application server "
+ applicationServer.getName() );
}
ContentManager contentManager = application.getContentManager( contentManagerName );
if ( contentManager == null )
{
LOGGER.error( "Content manager {} is not found in JEE application {}", contentManagerName,
application.getName() );
throw new KalumetException(
"Content manager " + contentManagerName + " is not found in JEE application " + application.getName() );
}
// update configuration cache.
LOGGER.debug( "Updating configuration cache" );
Configuration.CONFIG_CACHE = kalumet;
// post event and create an update log
EventUtils.post( environment, "UPDATE", "Content manager " + contentManager.getName() + " update requested by WS" );
UpdateLog updateLog =
new UpdateLog( "Content manager " + contentManager.getName() + " update in progress ...", environment.getName(),
environment );
if ( !delegation )
{
// the update is a client call,
// send a notification and waiting for the count down
LOGGER.info( "Send a notification and waiting for the count down" );
EventUtils.post( environment, "UPDATE", "Send a notification and waiting for the count down" );
NotifierUtils.waitAndNotify( environment );
}
try
{
// call the content manager updater
LOGGER.debug( "Call content manager updater" );
ContentManagerUpdater.update( environment, applicationServer, application, contentManager, updateLog );
}
catch ( Exception e )
{
LOGGER.error( "Content manager " + contentManager.getName() + " update failed", e );
EventUtils.post( environment, "ERROR",
"Content manager " + contentManager.getName() + " update failed: " + e.getMessage() );
if ( !delegation )
{
updateLog.setStatus( "Content manager " + contentManager.getName() + " update failed" );
updateLog.addUpdateMessage( new UpdateMessage( "error", "Content manager " + contentManager.getName()
+ " update failed: " + e.getMessage() ) );
PublisherUtils.publish( environment );
}
throw new UpdateException( "Content manager " + contentManager.getName() + " update failed", e );
}
// update completed
LOGGER.info( "Content manager {} updated", contentManager.getName() );
EventUtils.post( environment, "UPDATE", "Content manager " + contentManager.getName() + " updated" );
if ( !delegation )
{
if ( updateLog.isUpdated() )
{
updateLog.setStatus( "Content manager " + contentManager.getName() + " updated" );
}
else
{
updateLog.setStatus( "Content manager " + contentManager.getName() + " already up to date" );
}
updateLog.addUpdateMessage(
new UpdateMessage( "info", "Content manager " + contentManager.getName() + " updated" ) );
LOGGER.info( "Publishing update report" );
PublisherUtils.publish( environment );
}
}
}
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