/*
* Copyright 2012 JBoss Inc
*
* Licensed 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.guvnor.common.services.builder;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.annotation.PostConstruct;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.event.Event;
import javax.enterprise.event.Observes;
import javax.enterprise.inject.Any;
import javax.enterprise.inject.Instance;
import javax.inject.Inject;
import javax.inject.Named;
import org.guvnor.common.services.backend.cache.LRUCache;
import org.guvnor.common.services.project.builder.events.InvalidateDMOProjectCacheEvent;
import org.guvnor.common.services.project.builder.service.BuildValidationHelper;
import org.guvnor.common.services.project.model.POM;
import org.guvnor.common.services.project.model.Project;
import org.guvnor.common.services.project.service.POMService;
import org.guvnor.common.services.project.service.ProjectService;
import org.guvnor.common.services.project.events.RuleNameUpdateEvent;
import org.uberfire.backend.server.util.Paths;
import org.uberfire.backend.vfs.Path;
import org.uberfire.commons.validation.PortablePreconditions;
import org.uberfire.io.IOService;
/**
* A simple LRU cache for Builders
*/
@ApplicationScoped
public class LRUBuilderCache extends LRUCache<Project, Builder> {
@Inject
private POMService pomService;
@Inject
private ProjectService projectService;
@Inject
@Named("ioStrategy")
private IOService ioService;
@Inject
@Any
private Instance<BuildValidationHelper> anyValidators;
@Inject
private Event<RuleNameUpdateEvent> ruleNameUpdateEvent;
private final List<BuildValidationHelper> validators = new ArrayList<BuildValidationHelper>();
@PostConstruct
public void setupValidators() {
final Iterator<BuildValidationHelper> itr = anyValidators.iterator();
while ( itr.hasNext() ) {
validators.add( itr.next() );
}
}
public synchronized void invalidateProjectCache( @Observes final InvalidateDMOProjectCacheEvent event ) {
PortablePreconditions.checkNotNull( "event",
event );
final Project project = event.getProject();
//If resource was not within a Project there's nothing to invalidate
if ( project != null ) {
invalidateCache( project );
}
}
public synchronized Builder assertBuilder( final Project project ) {
Builder builder = getEntry( project );
if ( builder == null ) {
final Path pathToPom = project.getPomXMLPath();
final POM pom = pomService.load( pathToPom );
builder = new Builder( project,
Paths.convert( project.getRootPath() ),
pom.getGav(),
ioService,
projectService,
ruleNameUpdateEvent,
validators );
setEntry( project,
builder );
}
return builder;
}
}