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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.mngr;
import org.openecomp.sdc.common.transaction.api.RollbackHandler;
import org.openecomp.sdc.common.transaction.api.TransactionUtils.DBActionCodeEnum;
import org.openecomp.sdc.common.transaction.api.TransactionUtils.DBTypeEnum;
import org.openecomp.sdc.common.util.MethodActivationStatusEnum;
import fj.P;
import fj.data.Either;
import fj.data.HashMap;
import fj.data.List;
public class RollbackManager {
private final HashMap<DBTypeEnum, RollbackHandler> rollbackHandlersMap;
private final Integer transactionId;
private final String userId;
private final String actionType;
RollbackManager(Integer transactionId, String userId, String actionType, Iterable<RollbackHandler> rollbackHandlers) {
this.transactionId = transactionId;
this.userId = userId;
this.actionType = actionType;
this.rollbackHandlersMap = HashMap.from(List.iterableList(rollbackHandlers).map(i -> P.p(i.getDBType(), i)));
}
public DBActionCodeEnum transactionRollback() {
List<DBActionCodeEnum> results = rollbackHandlersMap.values().map(RollbackHandler::doRollback);
boolean failure = results.exists(r -> r == DBActionCodeEnum.FAIL_GENERAL);
return failure ? DBActionCodeEnum.FAIL_GENERAL : DBActionCodeEnum.SUCCESS;
}
protected Either<RollbackHandler, MethodActivationStatusEnum> addRollbackHandler(RollbackHandler rollbackHandler) {
Either<RollbackHandler, MethodActivationStatusEnum> result;
if (rollbackHandlersMap.contains(rollbackHandler.getDBType())) {
result = Either.right(MethodActivationStatusEnum.NOT_ALLOWED);
} else {
rollbackHandlersMap.set(rollbackHandler.getDBType(), rollbackHandler);
result = Either.left(rollbackHandler);
}
return result;
}
protected Either<RollbackHandler, MethodActivationStatusEnum> createRollbackHandler(final DBTypeEnum dbType) {
RollbackHandler rollbackHandler = new RollbackHandler(transactionId, userId, actionType) {
@Override
public DBTypeEnum getDBType() {
return dbType;
}
@Override
protected boolean isRollbackForPersistenceData() {
return true;
}
};
return addRollbackHandler(rollbackHandler);
}
protected Either<RollbackHandler, MethodActivationStatusEnum> getRollbackHandler(DBTypeEnum dbType) {
// need to swap here because the uses of Either in SDC appears to be opposite of convention
// by convention left is failure; in SDC right is failure
return rollbackHandlersMap.get(dbType).toEither(MethodActivationStatusEnum.NOT_FOUND).swap();
}
}
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