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Make LifecycleStarter pluggable (#1424)
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maven-core/src/main/java/org/apache/maven/lifecycle/internal/DefaultLifecycleStarter.java
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| @@ -0,0 +1,139 @@ | ||
| /* | ||
| * 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.maven.lifecycle.internal; | ||
|
|
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| import javax.inject.Inject; | ||
| import javax.inject.Named; | ||
| import javax.inject.Singleton; | ||
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| import java.util.List; | ||
| import java.util.Map; | ||
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| 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.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| /** | ||
| * Starts the build life cycle | ||
| * | ||
| */ | ||
| @Named | ||
| @Singleton | ||
| public class DefaultLifecycleStarter implements LifecycleStarter { | ||
| private final Logger logger = LoggerFactory.getLogger(getClass()); | ||
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| private final ExecutionEventCatapult eventCatapult; | ||
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| private final DefaultLifecycles defaultLifeCycles; | ||
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| private final BuildListCalculator buildListCalculator; | ||
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| private final LifecycleDebugLogger lifecycleDebugLogger; | ||
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| private final LifecycleTaskSegmentCalculator lifecycleTaskSegmentCalculator; | ||
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| private final Map<String, Builder> builders; | ||
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| @Inject | ||
| public DefaultLifecycleStarter( | ||
| ExecutionEventCatapult eventCatapult, | ||
| DefaultLifecycles defaultLifeCycles, | ||
| BuildListCalculator buildListCalculator, | ||
| LifecycleDebugLogger lifecycleDebugLogger, | ||
| LifecycleTaskSegmentCalculator lifecycleTaskSegmentCalculator, | ||
| Map<String, Builder> builders) { | ||
| this.eventCatapult = eventCatapult; | ||
| this.defaultLifeCycles = defaultLifeCycles; | ||
| this.buildListCalculator = buildListCalculator; | ||
| this.lifecycleDebugLogger = lifecycleDebugLogger; | ||
| this.lifecycleTaskSegmentCalculator = lifecycleTaskSegmentCalculator; | ||
| this.builders = builders; | ||
| } | ||
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| @Override | ||
| public void execute(MavenSession session) { | ||
| eventCatapult.fire(ExecutionEvent.Type.SessionStarted, session, null); | ||
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| ReactorContext reactorContext = null; | ||
| ProjectBuildList projectBuilds = null; | ||
| MavenExecutionResult result = session.getResult(); | ||
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| 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."); | ||
| } | ||
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| List<TaskSegment> taskSegments = lifecycleTaskSegmentCalculator.calculateTaskSegments(session); | ||
| projectBuilds = buildListCalculator.calculateProjectBuilds(session, taskSegments); | ||
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| 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() + "."); | ||
| } | ||
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| if (logger.isDebugEnabled()) { | ||
| lifecycleDebugLogger.debugReactorPlan(projectBuilds); | ||
| } | ||
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| ClassLoader oldContextClassLoader = Thread.currentThread().getContextClassLoader(); | ||
| ReactorBuildStatus reactorBuildStatus = new ReactorBuildStatus(session.getProjectDependencyGraph()); | ||
| reactorContext = new ReactorContext(result, oldContextClassLoader, reactorBuildStatus); | ||
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| 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)); | ||
| } | ||
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| int degreeOfConcurrency = session.getRequest().getDegreeOfConcurrency(); | ||
| if (degreeOfConcurrency > 1) { | ||
| 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); | ||
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| } catch (Exception e) { | ||
| result.addException(e); | ||
| } finally { | ||
| eventCatapult.fire(ExecutionEvent.Type.SessionEnded, session, null); | ||
| } | ||
| } | ||
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| private boolean buildExecutionRequiresProject(MavenSession session) { | ||
| return lifecycleTaskSegmentCalculator.requiresProject(session); | ||
| } | ||
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| private boolean projectIsNotPresent(MavenSession session) { | ||
| return !session.getRequest().isProjectPresent(); | ||
| } | ||
| } |
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