appc-dispatcher/appc-dispatcher-common/lock-manager-lib/lock-manager-impl/src/test/java/org/openecomp/appc/lockmanager/impl/sql/pessimistic/MySqlLockManagerMock.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * openECOMP : APP-C
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights
   6  *                                              reserved.
   7  * ================================================================================
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  * ============LICENSE_END=========================================================
  20  */
  21
  22 package org.openecomp.appc.lockmanager.impl.sql.pessimistic;
  23
  24 import java.sql.Connection;
  25 import java.sql.SQLException;
  26 import java.util.HashMap;
  27 import java.util.Map;
  28 import java.util.concurrent.TimeUnit;
  29 import java.util.concurrent.locks.Lock;
  30 import java.util.concurrent.locks.ReentrantLock;
  31
  32 import org.openecomp.appc.lockmanager.api.LockRuntimeException;
  33 import org.openecomp.appc.lockmanager.impl.sql.Synchronizer;
  34 import org.openecomp.appc.lockmanager.impl.sql.SynchronizerReceiver;
  35 import org.openecomp.appc.lockmanager.impl.sql.pessimistic.LockRecord;
  36 import org.openecomp.appc.lockmanager.impl.sql.pessimistic.MySqlLockManager;
  37
  38 class MySqlLockManagerMock extends MySqlLockManager implements SynchronizerReceiver {
  39
  40         private final Map<String, LockRecord> locks = new HashMap<>();
  41         private final Lock lock = new ReentrantLock();
  42         private boolean useReal;
  43         private Synchronizer synchronizer;
  44
  45         MySqlLockManagerMock(boolean useReal) {
  46                 this.useReal = useReal;
  47         }
  48
  49         @Override
  50         public void setSynchronizer(Synchronizer synchronizer) {
  51                 this.synchronizer = synchronizer;
  52         }
  53
  54         @Override
  55         protected Connection openDbConnection() {
  56                 if(useReal) {
  57                         return super.openDbConnection();
  58                 }
  59                 return null;
  60         }
  61
  62         @Override
  63         protected void closeDbConnection(Connection connection) {
  64                 if(useReal) {
  65                         super.closeDbConnection(connection);
  66                 }
  67         }
  68
  69         @Override
  70         protected LockRecord loadLockRecord(Connection connection, String resource) throws SQLException {
  71                 LockRecord res;
  72                 if(useReal) {
  73                         res = super.loadLockRecord(connection, resource);
  74                 } else {
  75                         res = locks.get(resource);
  76                 }
  77                 if(synchronizer != null) {
  78                         synchronizer.postLoadLockRecord(resource, (res == null) ? null : res.getOwner());
  79                 }
  80                 return res;
  81         }
  82
  83         @Override
  84         protected void addLockRecord(Connection connection, String resource, String owner, long timeout) throws SQLException {
  85                 if(synchronizer != null) {
  86                         synchronizer.preAddLockRecord(resource, owner);
  87                 }
  88                 try {
  89                         if(useReal) {
  90                                 super.addLockRecord(connection, resource, owner, timeout);
  91                                 return;
  92                         }
  93                         LockRecord lockRecord = new LockRecord(resource);
  94                         lockRecord.setOwner(owner);
  95                         lockRecord.setUpdated(System.currentTimeMillis());
  96                         lockRecord.setTimeout(timeout);
  97                         locks.put(resource, lockRecord);
  98                 } finally {
  99                         if(synchronizer != null) {
 100                                 synchronizer.postAddLockRecord(resource, owner);
 101                         }
 102                 }
 103         }
 104
 105         @Override
 106         protected void updateLockRecord(Connection connection, String resource, String owner, long timeout) throws SQLException {
 107                 if(synchronizer != null) {
 108                         synchronizer.preUpdateLockRecord(resource, owner);
 109                 }
 110                 try {
 111                         if(useReal) {
 112                                 super.updateLockRecord(connection, resource, owner, timeout);
 113                                 return;
 114                         }
 115                         LockRecord lockRecord = loadLockRecord(connection, resource);
 116                         lockRecord.setOwner(owner);
 117                         lockRecord.setUpdated(System.currentTimeMillis());
 118                         lockRecord.setTimeout(timeout);
 119                         locks.put(resource, lockRecord);
 120                 } finally {
 121                         if(synchronizer != null) {
 122                                 synchronizer.postUpdateLockRecord(resource, owner);
 123                         }
 124                 }
 125         }
 126
 127         @Override
 128         protected void enterCriticalSection(Connection connection, String resource) {
 129                 if(useReal) {
 130                         super.enterCriticalSection(connection, resource);
 131                         return;
 132                 }
 133                 try {
 134                         if(!lock.tryLock(criticalSectionWaitTimeoutSecs, TimeUnit.SECONDS)) {
 135                 throw new LockRuntimeException("Cannot obtain critical section lock for resource [" + resource + "].");
 136                         }
 137                 } catch(InterruptedException e) {
 138                         throw new LockRuntimeException("Cannot obtain critical section lock.", e);
 139                 }
 140         }
 141
 142         @Override
 143         protected void leaveCriticalSection(Connection connection, String resource) {
 144                 if(useReal) {
 145                         super.leaveCriticalSection(connection, resource);
 146                         return;
 147                 }
 148                 lock.unlock();
 149         }
 150 }