WorkspaceBindingInstallJob.java

/*****************************************************************************
 * Copyright (c) 2006-2013, Cloudsmith Inc.
 * The code, documentation and other materials contained herein have been
 * licensed under the Eclipse Public License - v 1.0 by the copyright holder
 * listed above, as the Initial Contributor under such license. The text of
 * such license is available at www.eclipse.org.
 *****************************************************************************/
package org.eclipse.buckminster.core.materializer;

import java.util.Arrays;

import org.eclipse.buckminster.core.Messages;
import org.eclipse.buckminster.core.RMContext;
import org.eclipse.buckminster.core.metadata.StorageManager;
import org.eclipse.buckminster.core.metadata.model.WorkspaceBinding;
import org.eclipse.buckminster.runtime.MonitorUtils;
import org.eclipse.core.resources.WorkspaceJob;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.IJobChangeEvent;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.core.runtime.jobs.JobChangeAdapter;

/**
 * @author Thomas Hallgren
 */
public class WorkspaceBindingInstallJob extends WorkspaceJob {
	private static class Repeater extends JobChangeAdapter {
		@Override
		public void done(IJobChangeEvent event) {
			Job job = active;
			if (job != null)
				job.schedule(REPEAT_DELAY);
		}
	}

	private static WorkspaceBindingInstallJob active = null;

	public static final int REPEAT_DELAY = 60000;

	public static void start() {
		if (active != null)
			return;

		active = new WorkspaceBindingInstallJob();
		active.addJobChangeListener(new Repeater());
		active.schedule(5000);
	}

	public static void stop() {
		Job job = active;
		active = null;
		if (job != null)
			job.cancel();
	}

	private WorkspaceBindingInstallJob() {
		super(Messages.Workspace_binding_installer);
		setPriority(Job.BUILD);
		setSystem(true);
		setUser(false);
	}

	@Override
	public IStatus runInWorkspace(IProgressMonitor monitor) throws CoreException {
		StorageManager sm = StorageManager.getDefault();
		WorkspaceBinding[] wsBindings = sm.getWorkspaceBindings().getElements();
		if (wsBindings.length == 0) {
			MonitorUtils.complete(monitor);
			return Status.OK_STATUS;
		}

		monitor.beginTask(null, wsBindings.length * 100);
		WorkspaceMaterializer wsMaterializer = new WorkspaceMaterializer();

		// Sort by timestamp
		//
		Arrays.sort(wsBindings);
		for (WorkspaceBinding wsBinding : wsBindings) {
			wsMaterializer.installLocal(wsBinding, new RMContext(wsBinding.getProperties()), MonitorUtils.subMonitor(monitor, 100));
			wsBinding.remove(sm);
		}
		monitor.done();
		return Status.OK_STATUS;
	}
}