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  * ONAP : APPC
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Copyright (C) 2017 Amdocs
   8  * =============================================================================
   9  * Licensed under the Apache License, Version 2.0 (the "License");
  10  * you may not use this file except in compliance with the License.
  11  * You may obtain a copy of the License at
  12  *
  13  *      http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  *
  21  * ECOMP is a trademark and service mark of AT&T Intellectual Property.
  22  * ============LICENSE_END=========================================================
  23  */
  24
  25 package org.onap.appc.lockmanager.impl.sql.optimistic;
  26
  27 import java.sql.Connection;
  28 import java.sql.SQLException;
  29 import java.util.concurrent.ConcurrentHashMap;
  30 import java.util.concurrent.ConcurrentMap;
  31
  32 import org.onap.appc.lockmanager.impl.sql.Synchronizer;
  33 import org.onap.appc.lockmanager.impl.sql.SynchronizerReceiver;
  34 import org.onap.appc.lockmanager.impl.sql.optimistic.LockRecord;
  35 import org.onap.appc.lockmanager.impl.sql.optimistic.MySqlLockManager;
  36
  37 class MySqlLockManagerMock extends MySqlLockManager implements SynchronizerReceiver {
  38
  39         private final ConcurrentMap<String, LockRecord> locks = new ConcurrentHashMap<>();
  40         private boolean useReal;
  41         private Synchronizer synchronizer;
  42
  43         MySqlLockManagerMock(boolean useReal) {
  44                 this.useReal = useReal;
  45         }
  46
  47         @Override
  48         public void setSynchronizer(Synchronizer synchronizer) {
  49                 this.synchronizer = synchronizer;
  50         }
  51
  52         @Override
  53         protected Connection openDbConnection() {
  54                 if(useReal) {
  55                         return super.openDbConnection();
  56                 }
  57                 return null;
  58         }
  59
  60         @Override
  61         protected void closeDbConnection(Connection connection) {
  62                 if(useReal) {
  63                         super.closeDbConnection(connection);
  64                 }
  65         }
  66
  67         @Override
  68         protected LockRecord loadLockRecord(Connection connection, String resource) throws SQLException {
  69                 LockRecord res;
  70                 if(useReal) {
  71                         res = super.loadLockRecord(connection, resource);
  72                 } else {
  73                         res = locks.get(resource);
  74                 }
  75                 if(synchronizer != null) {
  76                         synchronizer.postLoadLockRecord(resource, (res == null) ? null : res.getOwner());
  77                 }
  78                 return res;
  79         }
  80
  81         @Override
  82         protected void addLockRecord(Connection connection, String resource, String owner, long timeout) throws SQLException {
  83                 if(synchronizer != null) {
  84                         synchronizer.preAddLockRecord(resource, owner);
  85                 }
  86                 try {
  87                         if(useReal) {
  88                                 super.addLockRecord(connection, resource, owner, timeout);
  89                                 return;
  90                         }
  91                         LockRecord lockRecord = new LockRecord(resource);
  92                         lockRecord.setOwner(owner);
  93                         lockRecord.setUpdated(System.currentTimeMillis());
  94                         lockRecord.setTimeout(timeout);
  95                         lockRecord.setVer(1);
  96                         LockRecord prevLockRecord = locks.putIfAbsent(resource, lockRecord);
  97                         if(prevLockRecord != null) {
  98                                 // simulate unique constraint violation
  99                                 throw new SQLException("Duplicate PK exception", "23000", 1062);
 100                         }
 101                 } finally {
 102                         if(synchronizer != null) {
 103                                 synchronizer.postAddLockRecord(resource, owner);
 104                         }
 105                 }
 106         }
 107
 108         @Override
 109         protected boolean updateLockRecord(Connection connection, String resource, String owner, long timeout, long ver) throws SQLException {
 110                 if(synchronizer != null) {
 111                         synchronizer.preUpdateLockRecord(resource, owner);
 112                 }
 113                 try {
 114                         if(useReal) {
 115                                 return super.updateLockRecord(connection, resource, owner, timeout, ver);
 116                         }
 117                         LockRecord lockRecord = loadLockRecord(connection, resource);
 118                         synchronized(lockRecord) {
 119                                 // should be atomic operation
 120                                 if(ver != lockRecord.getVer()) {
 121                                         return false;
 122                                 }
 123                                 lockRecord.setOwner(owner);
 124                                 lockRecord.setUpdated(System.currentTimeMillis());
 125                                 lockRecord.setTimeout(timeout);
 126                                 lockRecord.setVer(ver + 1);
 127                         }
 128                         return true;
 129                 } finally {
 130                         if(synchronizer != null) {
 131                                 synchronizer.postUpdateLockRecord(resource, owner);
 132                         }
 133                 }
 134         }
 135 }