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/*-
* ============LICENSE_START=======================================================
* openECOMP : SDN-C
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. 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.
* ============LICENSE_END=========================================================
*/
package org.onap.ccsdk.sli.adaptors.ra;
import java.security.SecureRandom;
import java.util.Map;
import org.onap.ccsdk.sli.adaptors.lock.comp.LockHelper;
import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
import org.onap.ccsdk.sli.core.sli.SvcLogicException;
import org.onap.ccsdk.sli.core.sli.SvcLogicJavaPlugin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ResourceLockNode implements SvcLogicJavaPlugin {
private static final Logger log = LoggerFactory.getLogger(ResourceLockNode.class);
private LockHelper lockHelper;
public void setLockHelper(LockHelper lockHelper) {
this.lockHelper = lockHelper;
}
public void lockResource(Map<String, String> paramMap, SvcLogicContext ctx) throws SvcLogicException {
String resourceName = getParam(paramMap, "resource-name", true, null);
String lockRequester = getParam(paramMap, "lock-requester", false, generateLockRequester());
String lockTimeoutStr = getParam(paramMap, "lock-timeout", false, "600"); // Default lock timeout: 10 min
int lockTimeout = Integer.parseInt(lockTimeoutStr);
String lockWaitStr = getParam(paramMap, "lock-wait", false, "5"); // Time waiting before next retry. Default: 5 sec
int lockWait = Integer.parseInt(lockWaitStr);
String lockRetryCountStr = getParam(paramMap, "lock-retry-count", false, "10"); // Default: 10 retries
int lockRetryCount = Integer.parseInt(lockRetryCountStr);
lockHelper.lock(resourceName, lockRequester, lockTimeout, lockWait, lockRetryCount);
}
public void unlockResource(Map<String, String> paramMap, SvcLogicContext ctx) throws SvcLogicException {
String resourceName = getParam(paramMap, "resource-name", true, null);
lockHelper.unlock(resourceName, false);
}
public void lockResource(String resourceName, String lockRequester, int lockTimeout /* sec */) {
lockResource(resourceName, lockRequester, lockTimeout, 5, 10);
}
public void lockResource(String resourceName, String lockRequester, int lockTimeout /* sec */, int lockWait /* Seconds */, int retryCount) {
if (lockRequester == null) {
lockRequester = generateLockRequester();
}
if (lockTimeout <= 0) {
lockTimeout = 600;
}
lockHelper.lock(resourceName, lockRequester, lockTimeout, lockWait, retryCount);
}
public void unlockResource(String resourceName) {
lockHelper.unlock(resourceName, false);
}
private String getParam(Map<String, String> paramMap, String name, boolean required, String def)
throws SvcLogicException {
String v = paramMap.get(name);
if (v != null && v.trim().length() > 0) {
log.info("Param: " + name + ": " + v.trim());
return v.trim();
}
if (required) {
throw new SvcLogicException("The following node parameter is required: " + name);
}
log.info("Param: " + name + " not supplied. Using default: " + def);
return def;
}
private static String generateLockRequester() {
SecureRandom rand = new SecureRandom();
return "SynchronizedFunction-" + (int) (rand.nextDouble() * 1000000);
}
}
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