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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 java.util.List;
import java.util.Map;
import org.apache.maven.execution.ExecutionEvent;
import org.apache.maven.execution.MavenExecutionResult;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.lifecycle.DefaultLifecycles;
import org.apache.maven.lifecycle.MissingProjectException;
import org.apache.maven.lifecycle.NoGoalSpecifiedException;
import org.apache.maven.lifecycle.internal.builder.Builder;
import org.apache.maven.lifecycle.internal.builder.BuilderNotFoundException;
import org.apache.maven.session.scope.internal.SessionScope;
import org.codehaus.plexus.component.annotations.Component;
import org.codehaus.plexus.component.annotations.Requirement;
import org.codehaus.plexus.logging.Logger;
/**
* Starts the build life cycle
*
* @author Jason van Zyl
* @author Benjamin Bentmann
* @author Kristian Rosenvold
*/
@Component( role = LifecycleStarter.class )
public class LifecycleStarter
{
@Requirement
private ExecutionEventCatapult eventCatapult;
@Requirement
private DefaultLifecycles defaultLifeCycles;
@Requirement
private Logger logger;
@Requirement
private BuildListCalculator buildListCalculator;
@Requirement
private LifecycleDebugLogger lifecycleDebugLogger;
@Requirement
private LifecycleTaskSegmentCalculator lifecycleTaskSegmentCalculator;
@Requirement
private Map<String, Builder> builders;
@Requirement
private SessionScope sessionScope;
public void execute( MavenSession session )
{
eventCatapult.fire( ExecutionEvent.Type.SessionStarted, session, null );
ReactorContext reactorContext = null;
ProjectBuildList projectBuilds = null;
MavenExecutionResult result = session.getResult();
try
{
if ( buildExecutionRequiresProject( session ) && projectIsNotPresent( session ) )
{
throw new MissingProjectException( "The goal you specified requires a project to execute"
+ " but there is no POM in this directory (" + session.getExecutionRootDirectory() + ")."
+ " Please verify you invoked Maven from the correct directory." );
}
List<TaskSegment> taskSegments = lifecycleTaskSegmentCalculator.calculateTaskSegments( session );
projectBuilds = buildListCalculator.calculateProjectBuilds( session, taskSegments );
if ( projectBuilds.isEmpty() )
{
throw new NoGoalSpecifiedException( "No goals have been specified for this build."
+ " You must specify a valid lifecycle phase or a goal in the format <plugin-prefix>:<goal> or"
+ " <plugin-group-id>:<plugin-artifact-id>[:<plugin-version>]:<goal>."
+ " Available lifecycle phases are: " + defaultLifeCycles.getLifecyclePhaseList() + "." );
}
ProjectIndex projectIndex = new ProjectIndex( session.getProjects() );
if ( logger.isDebugEnabled() )
{
lifecycleDebugLogger.debugReactorPlan( projectBuilds );
}
ClassLoader oldContextClassLoader = Thread.currentThread().getContextClassLoader();
ReactorBuildStatus reactorBuildStatus = new ReactorBuildStatus( session.getProjectDependencyGraph() );
reactorContext =
new ReactorContext( result, projectIndex, oldContextClassLoader, reactorBuildStatus,
sessionScope.memento() );
String builderId = session.getRequest().getBuilderId();
Builder builder = builders.get( builderId );
if ( builder == null )
{
throw new BuilderNotFoundException( String.format( "The builder requested using id = %s cannot be"
+ " found", builderId ) );
}
int degreeOfConcurrency = session.getRequest().getDegreeOfConcurrency();
if ( degreeOfConcurrency >= 2 )
{
logger.info( "" );
logger.info( String.format( "Using the %s implementation with a thread count of %d",
builder.getClass().getSimpleName(), degreeOfConcurrency ) );
}
builder.build( session, reactorContext, projectBuilds, taskSegments, reactorBuildStatus );
}
catch ( Exception e )
{
result.addException( e );
}
finally
{
eventCatapult.fire( ExecutionEvent.Type.SessionEnded, session, null );
}
}
private boolean buildExecutionRequiresProject( MavenSession session )
{
return lifecycleTaskSegmentCalculator.requiresProject( session );
}
private boolean projectIsNotPresent( MavenSession session )
{
return !session.getRequest().isProjectPresent();
}
}
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