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

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * APPC
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * Copyright (C) 2017 Amdocs
   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  * ECOMP is a trademark and service mark of AT&T Intellectual Property.
  21  */
  22
  23 package org.openecomp.appc.lockmanager.impl.sql.optimistic;
  24
  25 import java.sql.Connection;
  26 import java.sql.SQLException;
  27 import java.util.concurrent.ConcurrentHashMap;
  28 import java.util.concurrent.ConcurrentMap;
  29
  30 import org.openecomp.appc.lockmanager.impl.sql.Synchronizer;
  31 import org.openecomp.appc.lockmanager.impl.sql.SynchronizerReceiver;
  32 import org.openecomp.appc.lockmanager.impl.sql.optimistic.LockRecord;
  33 import org.openecomp.appc.lockmanager.impl.sql.optimistic.MySqlLockManager;
  34
  35 class MySqlLockManagerMock extends MySqlLockManager implements SynchronizerReceiver {
  36
  37         private final ConcurrentMap<String, LockRecord> locks = new ConcurrentHashMap<>();
  38         private boolean useReal;
  39         private Synchronizer synchronizer;
  40
  41         MySqlLockManagerMock(boolean useReal) {
  42                 this.useReal = useReal;
  43         }
  44
  45         @Override
  46         public void setSynchronizer(Synchronizer synchronizer) {
  47                 this.synchronizer = synchronizer;
  48         }
  49
  50         @Override
  51         protected Connection openDbConnection() {
  52                 if(useReal) {
  53                         return super.openDbConnection();
  54                 }
  55                 return null;
  56         }
  57
  58         @Override
  59         protected void closeDbConnection(Connection connection) {
  60                 if(useReal) {
  61                         super.closeDbConnection(connection);
  62                 }
  63         }
  64
  65         @Override
  66         protected LockRecord loadLockRecord(Connection connection, String resource) throws SQLException {
  67                 LockRecord res;
  68                 if(useReal) {
  69                         res = super.loadLockRecord(connection, resource);
  70                 } else {
  71                         res = locks.get(resource);
  72                 }
  73                 if(synchronizer != null) {
  74                         synchronizer.postLoadLockRecord(resource, (res == null) ? null : res.getOwner());
  75                 }
  76                 return res;
  77         }
  78
  79         @Override
  80         protected void addLockRecord(Connection connection, String resource, String owner, long timeout) throws SQLException {
  81                 if(synchronizer != null) {
  82                         synchronizer.preAddLockRecord(resource, owner);
  83                 }
  84                 try {
  85                         if(useReal) {
  86                                 super.addLockRecord(connection, resource, owner, timeout);
  87                                 return;
  88                         }
  89                         LockRecord lockRecord = new LockRecord(resource);
  90                         lockRecord.setOwner(owner);
  91                         lockRecord.setUpdated(System.currentTimeMillis());
  92                         lockRecord.setTimeout(timeout);
  93                         lockRecord.setVer(1);
  94                         LockRecord prevLockRecord = locks.putIfAbsent(resource, lockRecord);
  95                         if(prevLockRecord != null) {
  96                                 // simulate unique constraint violation
  97                                 throw new SQLException("Duplicate PK exception", "23000", 1062);
  98                         }
  99                 } finally {
 100                         if(synchronizer != null) {
 101                                 synchronizer.postAddLockRecord(resource, owner);
 102                         }
 103                 }
 104         }
 105
 106         @Override
 107         protected boolean updateLockRecord(Connection connection, String resource, String owner, long timeout, long ver) throws SQLException {
 108                 if(synchronizer != null) {
 109                         synchronizer.preUpdateLockRecord(resource, owner);
 110                 }
 111                 try {
 112                         if(useReal) {
 113                                 return super.updateLockRecord(connection, resource, owner, timeout, ver);
 114                         }
 115                         LockRecord lockRecord = loadLockRecord(connection, resource);
 116                         synchronized(lockRecord) {
 117                                 // should be atomic operation
 118                                 if(ver != lockRecord.getVer()) {
 119                                         return false;
 120                                 }
 121                                 lockRecord.setOwner(owner);
 122                                 lockRecord.setUpdated(System.currentTimeMillis());
 123                                 lockRecord.setTimeout(timeout);
 124                                 lockRecord.setVer(ver + 1);
 125                         }
 126                         return true;
 127                 } finally {
 128                         if(synchronizer != null) {
 129                                 synchronizer.postUpdateLockRecord(resource, owner);
 130                         }
 131                 }
 132         }
 133 }