2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.openecomp.sdc.common.transaction.mngr;
23 import com.google.common.collect.EvictingQueue;
24 import com.google.common.collect.Queues;
25 import org.openecomp.sdc.be.dao.impl.ESCatalogDAO;
26 import org.openecomp.sdc.be.dao.janusgraph.JanusGraphGenericDao;
27 import org.openecomp.sdc.common.log.wrappers.Logger;
28 import org.openecomp.sdc.common.transaction.api.ITransactionSdnc;
29 import org.openecomp.sdc.common.transaction.api.TransactionUtils;
30 import org.openecomp.sdc.common.transaction.api.TransactionUtils.ActionTypeEnum;
31 import org.springframework.stereotype.Component;
33 import javax.annotation.Resource;
34 import java.util.Queue;
35 import java.util.concurrent.atomic.AtomicInteger;
37 @Component("transactionManager")
38 public class TransactionManager {
40 private static final Logger log = Logger.getLogger(TransactionManager.class.getName());
42 private AtomicInteger transactionIDCounter = new AtomicInteger(0);
44 private Queue<ITransactionSdnc> transactions;
46 private ESCatalogDAO esCatalogDao;
48 private JanusGraphGenericDao janusGraphGenericDao;
51 * userId and actionType parameters are used only for logging purposes.
53 public ITransactionSdnc getTransaction(String userId, ActionTypeEnum actionType) {
54 if (transactions == null) {
57 log.debug("TransactionManager creating new SdncTransaction");
58 ITransactionSdnc tx = new TransactionSdncImpl(generateTransactionID(), userId, actionType, esCatalogDao,
59 janusGraphGenericDao);
66 private Integer generateTransactionID() {
67 boolean generatedSuccessfully = false;
70 while (!generatedSuccessfully) {
71 int prevId = transactionIDCounter.get();
72 if (prevId > TransactionUtils.TRANSACTION_ID_RESET_LIMIT) {
76 generatedSuccessfully = transactionIDCounter.compareAndSet(prevId, nextId);
81 private void resetTransactionId() {
83 boolean resetSuccessfully = false;
84 while (!resetSuccessfully) {
85 int prevId = transactionIDCounter.get();
86 resetSuccessfully = transactionIDCounter.compareAndSet(prevId, 0);
91 private synchronized void init() {
92 if (transactions == null) {
93 log.info("TransactionManager Initialized");
94 EvictingQueue<ITransactionSdnc> queue = EvictingQueue
95 .<ITransactionSdnc>create(TransactionUtils.MAX_SIZE_TRANSACTION_LIST);
97 transactions = Queues.synchronizedQueue(queue);