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  * 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.pessimistic;
  26
  27 import java.sql.Connection;
  28 import java.sql.SQLException;
  29 import java.util.HashMap;
  30 import java.util.Map;
  31 import java.util.concurrent.TimeUnit;
  32 import java.util.concurrent.locks.Lock;
  33 import java.util.concurrent.locks.ReentrantLock;
  34
  35 import org.onap.appc.lockmanager.api.LockRuntimeException;
  36 import org.onap.appc.lockmanager.impl.sql.Synchronizer;
  37 import org.onap.appc.lockmanager.impl.sql.SynchronizerReceiver;
  38 import org.onap.appc.lockmanager.impl.sql.pessimistic.LockRecord;
  39 import org.onap.appc.lockmanager.impl.sql.pessimistic.MySqlLockManager;
  40
  41 class MySqlLockManagerMock extends MySqlLockManager implements SynchronizerReceiver {
  42
  43         private final Map<String, LockRecord> locks = new HashMap<>();
  44         private final Lock lock = new ReentrantLock();
  45         private boolean useReal;
  46         private Synchronizer synchronizer;
  47
  48         MySqlLockManagerMock(boolean useReal) {
  49                 this.useReal = useReal;
  50         }
  51
  52         @Override
  53         public void setSynchronizer(Synchronizer synchronizer) {
  54                 this.synchronizer = synchronizer;
  55         }
  56
  57         @Override
  58         protected Connection openDbConnection() {
  59                 if(useReal) {
  60                         return super.openDbConnection();
  61                 }
  62                 return null;
  63         }
  64
  65         @Override
  66         protected void closeDbConnection(Connection connection) {
  67                 if(useReal) {
  68                         super.closeDbConnection(connection);
  69                 }
  70         }
  71
  72         @Override
  73         protected LockRecord loadLockRecord(Connection connection, String resource) throws SQLException {
  74                 LockRecord res;
  75                 if(useReal) {
  76                         res = super.loadLockRecord(connection, resource);
  77                 } else {
  78                         res = locks.get(resource);
  79                 }
  80                 if(synchronizer != null) {
  81                         synchronizer.postLoadLockRecord(resource, (res == null) ? null : res.getOwner());
  82                 }
  83                 return res;
  84         }
  85
  86         @Override
  87         protected void addLockRecord(Connection connection, String resource, String owner, long timeout) throws SQLException {
  88                 if(synchronizer != null) {
  89                         synchronizer.preAddLockRecord(resource, owner);
  90                 }
  91                 try {
  92                         if(useReal) {
  93                                 super.addLockRecord(connection, resource, owner, timeout);
  94                                 return;
  95                         }
  96                         LockRecord lockRecord = new LockRecord(resource);
  97                         lockRecord.setOwner(owner);
  98                         lockRecord.setUpdated(System.currentTimeMillis());
  99                         lockRecord.setTimeout(timeout);
 100                         locks.put(resource, lockRecord);
 101                 } finally {
 102                         if(synchronizer != null) {
 103                                 synchronizer.postAddLockRecord(resource, owner);
 104                         }
 105                 }
 106         }
 107
 108         @Override
 109         protected void updateLockRecord(Connection connection, String resource, String owner, long timeout) throws SQLException {
 110                 if(synchronizer != null) {
 111                         synchronizer.preUpdateLockRecord(resource, owner);
 112                 }
 113                 try {
 114                         if(useReal) {
 115                                 super.updateLockRecord(connection, resource, owner, timeout);
 116                                 return;
 117                         }
 118                         LockRecord lockRecord = loadLockRecord(connection, resource);
 119                         lockRecord.setOwner(owner);
 120                         lockRecord.setUpdated(System.currentTimeMillis());
 121                         lockRecord.setTimeout(timeout);
 122                         locks.put(resource, lockRecord);
 123                 } finally {
 124                         if(synchronizer != null) {
 125                                 synchronizer.postUpdateLockRecord(resource, owner);
 126                         }
 127                 }
 128         }
 129
 130         @Override
 131         protected void enterCriticalSection(Connection connection, String resource) {
 132                 if(useReal) {
 133                         super.enterCriticalSection(connection, resource);
 134                         return;
 135                 }
 136                 try {
 137                         if(!lock.tryLock(criticalSectionWaitTimeoutSecs, TimeUnit.SECONDS)) {
 138                 throw new LockRuntimeException("Cannot obtain critical section lock for resource [" + resource + "].");
 139                         }
 140                 } catch(InterruptedException e) {
 141                         throw new LockRuntimeException("Cannot obtain critical section lock.", e);
 142                 }
 143         }
 144
 145         @Override
 146         protected void leaveCriticalSection(Connection connection, String resource) {
 147                 if(useReal) {
 148                         super.leaveCriticalSection(connection, resource);
 149                         return;
 150                 }
 151                 lock.unlock();
 152         }
 153 }