1 files changed, 121 insertions, 0 deletions
diff --git a/catalog-be/src/main/java/org/openecomp/sdc/common/transaction/api/RollbackHandler.java b/catalog-be/src/main/java/org/openecomp/sdc/common/transaction/api/RollbackHandler.java
new file mode 100644
index 0000000000..97a8083e88
--- /dev/null
+++ b/catalog-be/src/main/java/org/openecomp/sdc/common/transaction/api/RollbackHandler.java
@@ -0,0 +1,121 @@
+/*-
+ * ============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;
+	}
+}