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/*******************************************************************************
 *
 * Copyright (c) 2004-2010 Oracle Corporation.
 *
 * 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:
 *
 *    Kohsuke Kawaguchi
 *
 *
 *******************************************************************************/ 

package hudson.matrix;

import hudson.model.Job;
import hudson.tasks.LogRotator;
import hudson.util.RunList;

import java.io.IOException;

/**
 * {@link LogRotator} for {@link MatrixConfiguration}, which discards the builds
 * if and only if it's discarded in the parent.
 *
 *  Because of the serialization compatibility, we can't easily refactor
 * {@link LogRotator} into a contract and an implementation.
 *
 * @author Kohsuke Kawaguchi
 */
final class LinkedLogRotator extends LogRotator {

    LinkedLogRotator(int artifactDaysToKeep, int artifactNumToKeep) {
        super(-1, -1, artifactDaysToKeep, artifactNumToKeep);
    }

    /**
     * @deprecated since 1.369 Use {@link #LinkedLogRotator(int, int)}
     */
    LinkedLogRotator() {
        super(-1, -1, -1, -1);
    }

    @Override
    public void perform(Job _job) throws IOException, InterruptedException {
        // Let superclass handle clearing artifacts, if configured:
        super.perform(_job);
        MatrixConfiguration job = (MatrixConfiguration) _job;
        // copy it to the array because we'll be deleting builds as we go.
        RunList builds = job.getBuilds();
        for (MatrixRun r : builds.toArray(new MatrixRun[builds.size()])) {
            if (job.getParent().getBuildByNumber(r.getNumber()) == null) {
                r.delete();
            }
        }

        if (!job.isActiveConfiguration() && job.getLastBuild() == null) {
            job.delete();
        }
    }
}