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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* 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.appc.lockmanager.impl.sql.pessimistic;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import org.onap.appc.lockmanager.api.LockRuntimeException;
import org.onap.appc.lockmanager.impl.sql.Synchronizer;
import org.onap.appc.lockmanager.impl.sql.SynchronizerReceiver;
import org.onap.appc.lockmanager.impl.sql.pessimistic.LockRecord;
import org.onap.appc.lockmanager.impl.sql.pessimistic.MySqlLockManager;
class MySqlLockManagerMock extends MySqlLockManager implements SynchronizerReceiver {
private final Map<String, LockRecord> locks = new HashMap<>();
private final Lock lock = new ReentrantLock();
private boolean useReal;
private Synchronizer synchronizer;
MySqlLockManagerMock(boolean useReal) {
this.useReal = useReal;
}
@Override
public void setSynchronizer(Synchronizer synchronizer) {
this.synchronizer = synchronizer;
}
@Override
protected Connection openDbConnection() {
if(useReal) {
return super.openDbConnection();
}
return null;
}
@Override
protected void closeDbConnection(Connection connection) {
if(useReal) {
super.closeDbConnection(connection);
}
}
@Override
protected LockRecord loadLockRecord(Connection connection, String resource) throws SQLException {
LockRecord res;
if(useReal) {
res = super.loadLockRecord(connection, resource);
} else {
res = locks.get(resource);
}
if(synchronizer != null) {
synchronizer.postLoadLockRecord(resource, (res == null) ? null : res.getOwner());
}
return res;
}
@Override
protected void addLockRecord(Connection connection, String resource, String owner, long timeout) throws SQLException {
if(synchronizer != null) {
synchronizer.preAddLockRecord(resource, owner);
}
try {
if(useReal) {
super.addLockRecord(connection, resource, owner, timeout);
return;
}
LockRecord lockRecord = new LockRecord(resource);
lockRecord.setOwner(owner);
lockRecord.setUpdated(System.currentTimeMillis());
lockRecord.setTimeout(timeout);
locks.put(resource, lockRecord);
} finally {
if(synchronizer != null) {
synchronizer.postAddLockRecord(resource, owner);
}
}
}
@Override
protected void updateLockRecord(Connection connection, String resource, String owner, long timeout) throws SQLException {
if(synchronizer != null) {
synchronizer.preUpdateLockRecord(resource, owner);
}
try {
if(useReal) {
super.updateLockRecord(connection, resource, owner, timeout);
return;
}
LockRecord lockRecord = loadLockRecord(connection, resource);
lockRecord.setOwner(owner);
lockRecord.setUpdated(System.currentTimeMillis());
lockRecord.setTimeout(timeout);
locks.put(resource, lockRecord);
} finally {
if(synchronizer != null) {
synchronizer.postUpdateLockRecord(resource, owner);
}
}
}
@Override
protected void enterCriticalSection(Connection connection, String resource) {
if(useReal) {
super.enterCriticalSection(connection, resource);
return;
}
try {
if(!lock.tryLock(criticalSectionWaitTimeoutSecs, TimeUnit.SECONDS)) {
throw new LockRuntimeException("Cannot obtain critical section lock for resource [" + resource + "].");
}
} catch(InterruptedException e) {
throw new LockRuntimeException("Cannot obtain critical section lock.", e);
}
}
@Override
protected void leaveCriticalSection(Connection connection, String resource) {
if(useReal) {
super.leaveCriticalSection(connection, resource);
return;
}
lock.unlock();
}
}
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