package org.apache.maven.lifecycle.internal;
/*
* 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.
*/
import org.apache.maven.execution.MavenSession;
import org.apache.maven.project.MavenProject;
import org.codehaus.plexus.component.annotations.Component;
import org.codehaus.plexus.component.annotations.Requirement;
import org.codehaus.plexus.logging.Logger;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Callable;
import java.util.concurrent.CompletionService;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
/**
* Builds the full lifecycle in weave-mode (phase by phase as opposed to project-by-project)
*
* @since 3.0
* @author Kristian Rosenvold
* Builds one or more lifecycles for a full module
* <p/>
* NOTE: This class is not part of any public api and can be changed or deleted without prior notice.
*/
@Component( role = LifecycleThreadedBuilder.class )
public class LifecycleThreadedBuilder
{
@Requirement
private Logger logger;
@Requirement
private LifecycleModuleBuilder lifecycleModuleBuilder;
public LifecycleThreadedBuilder()
{
}
public void build( MavenSession session, ReactorContext reactorContext, ProjectBuildList projectBuilds,
List<TaskSegment> currentTaskSegment, ConcurrencyDependencyGraph analyzer,
CompletionService<ProjectSegment> service )
{
// Currently disabled
ThreadOutputMuxer muxer = null; // new ThreadOutputMuxer( analyzer.getProjectBuilds(), System.out );
for ( TaskSegment taskSegment : currentTaskSegment )
{
Map<MavenProject, ProjectSegment> projectBuildMap = projectBuilds.selectSegment( taskSegment );
try
{
multiThreadedProjectTaskSegmentBuild( analyzer, reactorContext, session, service, taskSegment,
projectBuildMap, muxer );
if ( reactorContext.getReactorBuildStatus().isHalted( ) )
{
break;
}
}
catch ( Exception e )
{
break; // Why are we just ignoring this exception? Are exceptions are being used for flow control
}
}
}
private void multiThreadedProjectTaskSegmentBuild( ConcurrencyDependencyGraph analyzer,
ReactorContext reactorContext, MavenSession rootSession,
CompletionService<ProjectSegment> service,
TaskSegment taskSegment,
Map<MavenProject, ProjectSegment> projectBuildList,
ThreadOutputMuxer muxer )
{
// schedule independent projects
for ( MavenProject mavenProject : analyzer.getRootSchedulableBuilds() )
{
ProjectSegment projectSegment = projectBuildList.get( mavenProject );
logger.debug( "Scheduling: " + projectSegment.getProject() );
Callable<ProjectSegment> cb =
createBuildCallable( rootSession, projectSegment, reactorContext, taskSegment, muxer );
service.submit( cb );
}
// for each finished project
for ( int i = 0; i < analyzer.getNumberOfBuilds(); i++ )
{
try
{
ProjectSegment projectBuild = service.take().get();
if ( reactorContext.getReactorBuildStatus().isHalted() )
{
break;
}
final List<MavenProject> newItemsThatCanBeBuilt =
analyzer.markAsFinished( projectBuild.getProject() );
for ( MavenProject mavenProject : newItemsThatCanBeBuilt )
{
ProjectSegment scheduledDependent = projectBuildList.get( mavenProject );
logger.debug( "Scheduling: " + scheduledDependent );
Callable<ProjectSegment> cb =
createBuildCallable( rootSession, scheduledDependent, reactorContext, taskSegment, muxer );
service.submit( cb );
}
}
catch ( InterruptedException e )
{
break;
}
catch ( ExecutionException e )
{
break;
}
}
// cancel outstanding builds (if any) - this can happen if an exception is thrown in above block
Future<ProjectSegment> unprocessed;
while ( ( unprocessed = service.poll() ) != null )
{
try
{
unprocessed.get();
}
catch ( InterruptedException e )
{
throw new RuntimeException( e );
}
catch ( ExecutionException e )
{
throw new RuntimeException( e );
}
}
}
private Callable<ProjectSegment> createBuildCallable( final MavenSession rootSession,
final ProjectSegment projectBuild,
final ReactorContext reactorContext,
final TaskSegment taskSegment, final ThreadOutputMuxer muxer )
{
return new Callable<ProjectSegment>()
{
public ProjectSegment call()
{
// muxer.associateThreadWithProjectSegment( projectBuild );
lifecycleModuleBuilder.buildProject( projectBuild.getSession(), rootSession, reactorContext,
projectBuild.getProject(), taskSegment );
// muxer.setThisModuleComplete( projectBuild );
return projectBuild;
}
};
}
}