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M2Eclipse gets stuck in endless update loop
Fix eclipse-m2e#123
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org.eclipse.m2e.core/src/org/eclipse/m2e/core/internal/project/ProjectProcessingTracker.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2022 Christoph Läubrich and others | ||
| * All rights reserved. This program and the accompanying materials | ||
| * are made available under the terms of the Eclipse Public License v1.0 | ||
| * which accompanies this distribution, and is available at | ||
| * http://www.eclipse.org/legal/epl-v10.html | ||
| * | ||
| * Contributors: | ||
| * Christoph Läubrich - initial API and implementation | ||
| *******************************************************************************/ | ||
| package org.eclipse.m2e.core.internal.project; | ||
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| import java.util.Iterator; | ||
| import java.util.LinkedHashSet; | ||
| import java.util.Set; | ||
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| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import org.eclipse.core.resources.IFile; | ||
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| /** | ||
| * ProjectProcessingTracker keeps track of the progress in refreshing projects. | ||
| * | ||
| */ | ||
| public class ProjectProcessingTracker { | ||
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| static final Logger log = LoggerFactory.getLogger(ProjectProcessingTracker.class); | ||
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| private Set<IFile> processed = new LinkedHashSet<>(); | ||
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| private Set<IFile> changedWhileRunning = new LinkedHashSet<>(); | ||
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| private Set<IFile> seed; | ||
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| private DependencyResolutionContext context; | ||
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| /** | ||
| * @param allProcessedPoms | ||
| */ | ||
| public ProjectProcessingTracker(DependencyResolutionContext context) { | ||
| this.context = context; | ||
| this.seed = context.getCurrent(); | ||
| } | ||
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| /** | ||
| * @param context | ||
| * @return | ||
| */ | ||
| public boolean needsImprovement() { | ||
| if(changedWhileRunning.isEmpty()) { | ||
| log.debug("Nothing changed in this cycle."); | ||
| return false; | ||
| } | ||
| if(seed.isEmpty()) { | ||
| log.debug("Seed is empty."); | ||
| return false; | ||
| } | ||
| log.debug("seed = {}", seed); | ||
| log.debug("processed = {}", processed); | ||
| log.debug("changed = {}", changedWhileRunning); | ||
| boolean removed = false; | ||
| for(Iterator<IFile> iterator = seed.iterator(); iterator.hasNext();) { | ||
| IFile file = iterator.next(); | ||
| if(changedWhileRunning.contains(file)) { | ||
| //we need to keep this in the seed... | ||
| continue; | ||
| } | ||
| log.debug("{} was improved!", file); | ||
| iterator.remove(); | ||
| removed = true; | ||
| } | ||
| if(removed) { | ||
| //we have an improvement... | ||
| context.forcePomFiles(changedWhileRunning); | ||
| //add all possibly new ones to the seed... | ||
| seed.addAll(changedWhileRunning); | ||
| //clear everything for next iteration... | ||
| changedWhileRunning.clear(); | ||
| processed.clear(); | ||
| return true; | ||
| } | ||
| log.debug("No new project was refreshed -> no improvement found!"); | ||
| return false; | ||
| } | ||
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| /** | ||
| * @param pom | ||
| * @return | ||
| */ | ||
| public boolean shouldProcess(IFile pom) { | ||
| if(processed.add(pom)) { | ||
| return true; | ||
| } | ||
| changedWhileRunning.add(pom); | ||
| return false; | ||
| } | ||
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| } |
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