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/*-
* ============LICENSE_START=======================================================
* SDC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.openecomp.sdc.common.transaction.api;
import java.util.Stack;
import org.openecomp.sdc.common.transaction.api.TransactionUtils.DBActionCodeEnum;
import org.openecomp.sdc.common.transaction.api.TransactionUtils.LogMessages;
import org.openecomp.sdc.common.util.MethodActivationStatusEnum;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public abstract class RollbackHandler implements IDBType {
private static Logger log = LoggerFactory.getLogger(RollbackHandler.class.getName());
private Stack<IDBAction> dbActionRollbacks;
private Integer transactionId;
private String userId, actionType;
protected RollbackHandler(Integer transactionId, String userId, String actionType) {
if (isRollbackForPersistenceData()) {
dbActionRollbacks = new Stack<>();
}
this.transactionId = transactionId;
this.userId = userId;
this.actionType = actionType;
}
public MethodActivationStatusEnum addRollbackAction(IDBAction rollbackAction) {
MethodActivationStatusEnum result = MethodActivationStatusEnum.SUCCESS;
if (isRollbackForPersistenceData()) {
dbActionRollbacks.push(rollbackAction);
} else {
result = MethodActivationStatusEnum.NOT_ALLOWED;
}
return result;
}
public DBActionCodeEnum doRollback() {
DBActionCodeEnum result;
try {
if (isRollbackForPersistenceData()) {
result = doPersistenceDataRollback();
} else {
log.debug(LogMessages.ROLLBACK_NON_PERSISTENT_ACTION, getDBType().name(), transactionId, userId, actionType);
log.debug(TransactionUtils.TRANSACTION_MARKER, LogMessages.ROLLBACK_NON_PERSISTENT_ACTION, getDBType().name(), transactionId, userId, actionType);
result = doNonPersistenceDataRollback();
}
if (result != DBActionCodeEnum.SUCCESS) {
log.error(LogMessages.ROLLBACK_FAILED_ON_DB, transactionId, getDBType().name(), userId, actionType);
log.error(TransactionUtils.TRANSACTION_MARKER, LogMessages.ROLLBACK_FAILED_ON_DB, transactionId, getDBType().name(), userId, actionType);
}
} catch (Exception e) {
result = DBActionCodeEnum.FAIL_GENERAL;
log.error(LogMessages.ROLLBACK_FAILED_ON_DB_WITH_EXCEPTION, transactionId, getDBType().name(), e.getMessage(), userId, actionType);
log.debug(LogMessages.ROLLBACK_FAILED_ON_DB_WITH_EXCEPTION, transactionId, getDBType().name(), e.getMessage(), userId, actionType, e);
log.error(TransactionUtils.TRANSACTION_MARKER, LogMessages.ROLLBACK_FAILED_ON_DB_WITH_EXCEPTION, transactionId, getDBType().name(), e.getMessage(), userId, actionType);
}
return result;
}
private <T> DBActionCodeEnum doPersistenceDataRollback() {
DBActionCodeEnum result = DBActionCodeEnum.SUCCESS;
while (!dbActionRollbacks.empty()) {
log.debug(LogMessages.ROLLBACK_PERSISTENT_ACTION, getDBType().name(), transactionId, userId, actionType);
log.debug(TransactionUtils.TRANSACTION_MARKER, LogMessages.ROLLBACK_PERSISTENT_ACTION, getDBType().name(), transactionId, userId, actionType);
IDBAction rollbackAction = dbActionRollbacks.pop();
T rollbackResult = rollbackAction.doAction();
if (!isRollbackResultValid(rollbackResult)) {
result = DBActionCodeEnum.FAIL_GENERAL;
}
}
return result;
}
/**
* Override for specific logic
*
* @param <T>
*/
public <T> boolean isRollbackResultValid(T rollbackResult) {
return true;
}
/**
* Override for specific logic
*/
public DBActionCodeEnum doNonPersistenceDataRollback() {
return DBActionCodeEnum.SUCCESS;
}
protected abstract boolean isRollbackForPersistenceData();
/**
* Only Used for Unit Tests !
*/
public static void setLog(Logger log) {
RollbackHandler.log = log;
}
}
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