/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.ignite.internal.processors.hadoop.proto;
import java.util.UUID;
import org.apache.ignite.IgniteCheckedException;
import org.apache.ignite.compute.ComputeJobContext;
import org.apache.ignite.internal.IgniteInternalFuture;
import org.apache.ignite.internal.processors.hadoop.Hadoop;
import org.apache.ignite.internal.processors.hadoop.HadoopJobId;
import org.apache.ignite.internal.processors.hadoop.HadoopJobStatus;
import org.apache.ignite.internal.util.typedef.F;
import org.apache.ignite.lang.IgniteInClosure;
/**
* Job status task.
*/
public class HadoopProtocolJobStatusTask extends HadoopProtocolTaskAdapter<HadoopJobStatus> {
/** */
private static final long serialVersionUID = 0L;
/** Default poll delay */
private static final long DFLT_POLL_DELAY = 100L;
/** Attribute for held status. */
private static final String ATTR_HELD = "held";
/** {@inheritDoc} */
@Override public HadoopJobStatus run(final ComputeJobContext jobCtx, Hadoop hadoop,
HadoopProtocolTaskArguments args) throws IgniteCheckedException {
UUID nodeId = UUID.fromString(args.<String>get(0));
Integer id = args.get(1);
Long pollDelay = args.get(2);
assert nodeId != null;
assert id != null;
HadoopJobId jobId = new HadoopJobId(nodeId, id);
if (pollDelay == null)
pollDelay = DFLT_POLL_DELAY;
if (pollDelay > 0) {
IgniteInternalFuture<?> fut = hadoop.finishFuture(jobId);
if (fut != null) {
if (fut.isDone() || F.eq(jobCtx.getAttribute(ATTR_HELD), true))
return hadoop.status(jobId);
else {
fut.listen(new IgniteInClosure<IgniteInternalFuture<?>>() {
@Override public void apply(IgniteInternalFuture<?> fut0) {
jobCtx.callcc();
}
});
jobCtx.setAttribute(ATTR_HELD, true);
return jobCtx.holdcc(pollDelay);
}
}
else
return null;
}
else
return hadoop.status(jobId);
}
}