2 * Copyright © 2017 Orange, Inc. and others. All rights reserved.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 package org.opendaylight.transportpce.common.network;
10 import com.google.common.base.Optional;
11 import com.google.common.util.concurrent.FluentFuture;
12 import com.google.common.util.concurrent.ListenableFuture;
13 import java.util.concurrent.locks.ReentrantReadWriteLock;
14 import org.eclipse.jdt.annotation.NonNull;
15 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
16 import org.opendaylight.controller.md.sal.binding.api.ReadOnlyTransaction;
17 import org.opendaylight.controller.md.sal.binding.api.ReadWriteTransaction;
18 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
19 import org.opendaylight.mdsal.common.api.CommitInfo;
20 import org.opendaylight.yangtools.yang.binding.DataObject;
21 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
22 import org.slf4j.Logger;
23 import org.slf4j.LoggerFactory;
25 public class RequestProcessor {
27 private static final Logger LOG = LoggerFactory.getLogger(RequestProcessor.class);
29 private final DataBroker dataBroker;
30 private ReadWriteTransaction rwTx;
31 private ReadOnlyTransaction readTx;
32 private ReentrantReadWriteLock lock;
36 public RequestProcessor(DataBroker dataBroker) {
37 this.dataBroker = dataBroker;
38 rwTx = dataBroker.newReadWriteTransaction();
39 readTx = dataBroker.newReadOnlyTransaction();
40 lock = new ReentrantReadWriteLock();
41 LOG.info("RequestProcessor instantiated");
45 public <T extends DataObject> ListenableFuture<Optional<T>>
46 read(LogicalDatastoreType store,InstanceIdentifier<T> path) {
48 ListenableFuture<Optional<T>> result = null;
50 LOG.debug("Number of threads in queue to read {}", lock.getQueueLength());
51 result = rwTx.read(store, path);
57 public <T extends DataObject> void delete(LogicalDatastoreType store, InstanceIdentifier<?> path) {
60 LOG.info("Number of delete requests waiting in queue :{}", lock.getQueueLength());
61 rwTx.delete(store, path);
64 public <T extends DataObject> void put(LogicalDatastoreType store,
65 InstanceIdentifier<T> path, T data, boolean createMissingParents) {
68 LOG.debug("Number of put requests waiting in queue :{}", lock.getQueueLength());
69 rwTx.put(store, path, data, createMissingParents);
72 public <T extends DataObject> void put(LogicalDatastoreType store,
73 InstanceIdentifier<T> path, T data) {
76 LOG.debug("Number of put requests waiting in queue :{}", lock.getQueueLength());
77 rwTx.put(store, path, data);
81 public <T extends DataObject> void merge(LogicalDatastoreType store,
82 InstanceIdentifier<T> path, T data, boolean createMissingParents) {
85 LOG.debug("Number of merge requests waiting in queue :{}", lock.getQueueLength());
86 rwTx.merge(store, path, data, createMissingParents);
89 public <T extends DataObject> void merge(LogicalDatastoreType store,
90 InstanceIdentifier<T> path, T data) {
93 LOG.debug("Number of merge requests waiting in queue :{}", lock.getQueueLength());
94 rwTx.merge(store, path, data);
97 public FluentFuture<? extends @NonNull CommitInfo> commit() {
99 FluentFuture<? extends @NonNull CommitInfo> future = null;
100 future = rwTx.commit();
106 public void close() {
110 private void acquireLock() {
111 if (!lock.writeLock().isHeldByCurrentThread()) {
112 lock.writeLock().lock();
113 LOG.debug("Number of write lock requests waiting in queue :{}", lock.getQueueLength());
114 LOG.info("Write Lock acquired by : {}", Thread.currentThread().getName());
117 LOG.debug("Lock already acquired by : {}", Thread.currentThread().getName());
121 private void acquireReadLock() {
122 if (lock.getReadHoldCount() > 0) {
123 LOG.info("Read Lock already acquired by : {}", Thread.currentThread().getName());
125 lock.readLock().lock();
127 LOG.info("Read Lock acquired by : {}", Thread.currentThread().getName());
131 private void releaseLock() {
132 if (lock.writeLock().isHeldByCurrentThread()) {
133 LOG.info("Write Lock released by : {}", Thread.currentThread().getName());
134 lock.writeLock().unlock();
138 private void releaseReadLock() {
139 LOG.info("Read Lock released by : {}", Thread.currentThread().getName());
140 lock.readLock().unlock();
143 private ReadWriteTransaction resetRwTx() {
144 LOG.info("Resetting the read write transaction .....");
145 rwTx = dataBroker.newReadWriteTransaction();