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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2016-2018 Ericsson. All rights reserved.
* ================================================================================
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.apex.plugins.context.metrics;
import java.util.Random;
import org.onap.policy.apex.context.ContextAlbum;
import org.onap.policy.apex.context.ContextException;
import org.onap.policy.apex.context.Distributor;
import org.onap.policy.apex.context.impl.distribution.DistributorFactory;
import org.onap.policy.apex.context.test.concepts.TestContextLongItem;
import org.onap.policy.apex.context.test.factory.TestContextAlbumFactory;
import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
import org.onap.policy.apex.model.contextmodel.concepts.AxContextModel;
import org.slf4j.ext.XLogger;
import org.slf4j.ext.XLoggerFactory;
/**
* The Class ConcurrentContextMetricsThread gets metrics for concurrent use of context.
*
* @author Liam Fallon (liam.fallon@ericsson.com)
*/
public class ConcurrentContextMetricsThread implements Runnable {
// Logger for this class
private static final XLogger LOGGER = XLoggerFactory.getXLogger(ConcurrentContextMetricsThread.class);
private final Distributor contextDistributor;
private final int jvm;
private final int instance;
private final int threadLoops;
private final int longArraySize;
private final int lockType;
/**
* The Constructor.
*
* @param jvm the jvm
* @param instance the instance
* @param threadLoops the thread loops
* @param longArraySize the long array size
* @param lockType the lock type
* @throws ApexException the apex exception
*/
public ConcurrentContextMetricsThread(final int jvm, final int instance, final int threadLoops,
final int longArraySize, final int lockType) throws ApexException {
this.jvm = jvm;
this.instance = instance;
this.threadLoops = threadLoops;
this.longArraySize = longArraySize;
this.lockType = lockType;
final AxArtifactKey distributorKey = new AxArtifactKey("ApexDistributor_" + jvm + "_" + instance, "0.0.1");
contextDistributor = new DistributorFactory().getDistributor(distributorKey);
}
/*
* (non-Javadoc)
*
* @see java.lang.Runnable#run()
*/
@Override
public void run() {
LOGGER.info("running ConcurrentContextMetricsThread_" + jvm + "_" + instance + " . . .");
ContextAlbum lTypeAlbum = null;
try {
final AxContextModel axTestContextModel = TestContextAlbumFactory.createMultiAlbumsContextModel();
contextDistributor.registerModel(axTestContextModel);
lTypeAlbum = contextDistributor.createContextAlbum(new AxArtifactKey("LTypeContextAlbum", "0.0.1"));
} catch (final Exception e) {
LOGGER.error("could not get the test context album", e);
LOGGER.error("failed ConcurrentContextMetricsThread_" + jvm + "_" + instance);
return;
}
if (lTypeAlbum == null) {
LOGGER.error("could not find the test context album");
LOGGER.error("failed ConcurrentContextMetricsThread_" + jvm + "_" + instance);
return;
}
final AxArtifactKey[] usedArtifactStackArray =
{new AxArtifactKey("testCC-top", "0.0.1"), new AxArtifactKey("testCC-" + instance, "0.0.1")};
lTypeAlbum.setUserArtifactStack(usedArtifactStackArray);
final Random rand = new Random();
for (int i = 0; i < threadLoops; i++) {
// Get the next random entry to use
final String nextLongKey = Integer.toString(rand.nextInt(longArraySize));
if (lockType == 0) {
final TestContextLongItem item = (TestContextLongItem) lTypeAlbum.get(nextLongKey);
final long value = item.getLongValue();
if (LOGGER.isTraceEnabled()) {
LOGGER.trace("lock type=" + lockType + ", value=" + value);
}
continue;
}
if (lockType == 1) {
try {
lTypeAlbum.lockForReading(nextLongKey);
} catch (final ContextException e) {
LOGGER.error("could not acquire read lock on context album, key=" + nextLongKey, e);
continue;
}
final TestContextLongItem item = (TestContextLongItem) lTypeAlbum.get(nextLongKey);
final long value = item.getLongValue();
if (LOGGER.isTraceEnabled()) {
LOGGER.trace("lock type=" + lockType + ", value=" + value);
}
try {
lTypeAlbum.unlockForReading(nextLongKey);
} catch (final ContextException e) {
LOGGER.error("could not release read lock on context album, key=" + nextLongKey, e);
}
continue;
}
if (lockType == 2) {
try {
lTypeAlbum.lockForWriting(nextLongKey);
} catch (final ContextException e) {
LOGGER.error("could not acquire write lock on context album, key=" + nextLongKey, e);
continue;
}
final TestContextLongItem item = (TestContextLongItem) lTypeAlbum.get(nextLongKey);
long value = item.getLongValue();
if (LOGGER.isTraceEnabled()) {
LOGGER.trace("lock type=" + lockType + ", value=" + value);
}
item.setLongValue(++value);
lTypeAlbum.put(nextLongKey, item);
try {
lTypeAlbum.unlockForWriting(nextLongKey);
} catch (final ContextException e) {
LOGGER.error("could not release write lock on context album, key=" + nextLongKey, e);
}
continue;
}
}
LOGGER.info("completed ConcurrentContextMetricsThread_" + jvm + "_" + instance);
}
}
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