/*
* Copyright (c) 2009-2012, toby weston & tempus-fugit committers
*
* Licensed 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.hive.testutils.junit.runners.model;
import static com.google.code.tempusfugit.concurrency.ExecutorServiceShutdown.shutdown;
import static com.google.code.tempusfugit.temporal.Duration.days;
import static java.lang.Boolean.TRUE;
import java.io.IOException;
import java.io.OutputStream;
import java.util.concurrent.ExecutorService;
import org.junit.runners.model.RunnerScheduler;
/**
* Originally taken from com.google.code.tempusfugit.concurrency.ConcurrentScheduler
*/
public class ConcurrentScheduler implements RunnerScheduler {
private final ExecutorService executor;
private final OutputStream outputStream;
public ConcurrentScheduler(ExecutorService executor) {
this(executor, System.err);
}
public ConcurrentScheduler(ExecutorService executor, OutputStream outputStream) {
this.executor = executor;
this.outputStream = outputStream;
}
public void schedule(Runnable childStatement) {
executor.submit(childStatement);
}
public void finished() {
if (!successful(shutdown(executor).waitingForCompletion(days(365)))) {
writeln(outputStream, "scheduler shutdown timed out before tests completed, "
+ "you may have executors hanging around...");
}
}
private Boolean successful(Boolean completed) {
return TRUE.equals(completed);
}
private void writeln(OutputStream stream, String string) {
try {
stream.write(string.getBytes());
stream.write(System.getProperty("line.separator").getBytes());
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}