org.infinitest.eclipse.SwtEventQueue.java Source code

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/*
 * Infinitest, a Continuous Test Runner.
 *
 * Copyright (C) 2010-2013
 * "Ben Rady" <benrady@gmail.com>,
 * "Rod Coffin" <rfciii@gmail.com>,
 * "Ryan Breidenbach" <ryan.breidenbach@gmail.com>
 * "David Gageot" <david@gageot.net>, et al.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package org.infinitest.eclipse;

import static org.eclipse.core.runtime.jobs.Job.*;
import static org.infinitest.util.InfinitestUtils.*;

import java.util.concurrent.*;

import org.eclipse.core.runtime.*;
import org.eclipse.core.runtime.jobs.*;
import org.infinitest.*;
import org.springframework.stereotype.*;

@Component
public class SwtEventQueue implements EventQueue {
    private final BlockingQueue<NamedRunnable> runnableQueue = new LinkedBlockingQueue<NamedRunnable>();
    private Job job;

    public SwtEventQueue() {
        job = createJob();
    }

    @Override
    public void pushNamed(NamedRunnable runnable) {
        try {
            runnableQueue.put(runnable);
        } catch (InterruptedException e) {
            throw new QueueDispatchException(e);
        }
        // Job API will queue up a successive job if it is already running, but
        // not if there is
        // already one queued
        job.schedule();
    }

    private class InfinitestJob extends Job {
        public InfinitestJob() {
            super("Infinitest");
        }

        @Override
        protected IStatus run(IProgressMonitor monitor) {
            monitor.beginTask("Processing events", runnableQueue.size());
            try {
                int eventsProcessed = 0;
                while (!runnableQueue.isEmpty() && !monitor.isCanceled()) {
                    processEvent(monitor);
                    monitor.worked(eventsProcessed++);
                }
            } catch (InterruptedException e) {
                return Status.CANCEL_STATUS;
            } finally {
                monitor.done();
            }
            return Status.OK_STATUS;
        }

        private void processEvent(IProgressMonitor monitor) throws InterruptedException {
            NamedRunnable runnable = runnableQueue.take();
            setName("Infinitest [" + runnable.getName() + "]");
            try {
                runnable.run();
            }
            // CHECKSTYLE:OFF
            // We don't want a failure in the processing of one event to prevent
            // the next.
            catch (Exception e)
            // CHECKSTYLE:ON
            {
                log("Error executing event runnable: " + runnable.getName(), e);
            }
        }
    }

    Job createJob() {
        job = new InfinitestJob();
        job.setPriority(BUILD);
        return job;
    }

    @Override
    public void push(final Runnable runnable) {
        pushNamed(new NamedRunnable("") {
            @Override
            public void run() {
                runnable.run();
            }
        });
    }
}