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.util.concurrent.FluentFuture;
11 import com.google.common.util.concurrent.ListenableFuture;
12 import java.util.Optional;
13 import java.util.concurrent.locks.ReentrantReadWriteLock;
14 import org.eclipse.jdt.annotation.NonNull;
15 import org.opendaylight.mdsal.binding.api.DataBroker;
16 import org.opendaylight.mdsal.binding.api.ReadTransaction;
17 import org.opendaylight.mdsal.binding.api.ReadWriteTransaction;
18 import org.opendaylight.mdsal.common.api.CommitInfo;
19 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
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 ReadTransaction 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);
65 public <T extends DataObject> void put(LogicalDatastoreType store,
66 InstanceIdentifier<T> path, T data, boolean createMissingParents) {
69 LOG.debug("Number of put requests waiting in queue :{}", lock.getQueueLength());
70 rwTx.put(store, path, data, createMissingParents);
73 public <T extends DataObject> void put(LogicalDatastoreType store,
74 InstanceIdentifier<T> path, T data) {
77 LOG.debug("Number of put requests waiting in queue :{}", lock.getQueueLength());
78 rwTx.put(store, path, data);
82 public <T extends DataObject> void merge(LogicalDatastoreType store,
83 InstanceIdentifier<T> path, T data, boolean createMissingParents) {
86 LOG.debug("Number of merge requests waiting in queue :{}", lock.getQueueLength());
87 rwTx.merge(store, path, data, createMissingParents);
90 public <T extends DataObject> void merge(LogicalDatastoreType store,
91 InstanceIdentifier<T> path, T data) {
94 LOG.debug("Number of merge requests waiting in queue :{}", lock.getQueueLength());
95 rwTx.merge(store, path, data);
98 public FluentFuture<? extends @NonNull CommitInfo> commit() {
100 FluentFuture<? extends @NonNull CommitInfo> future = null;
101 future = rwTx.commit();
107 public void close() {
111 private void acquireLock() {
112 if (!lock.writeLock().isHeldByCurrentThread()) {
113 lock.writeLock().lock();
114 LOG.debug("Number of write lock requests waiting in queue :{}", lock.getQueueLength());
115 LOG.info("Write Lock acquired by : {}", Thread.currentThread().getName());
118 LOG.debug("Lock already acquired by : {}", Thread.currentThread().getName());
122 private void acquireReadLock() {
123 if (lock.getReadHoldCount() > 0) {
124 LOG.info("Read Lock already acquired by : {}", Thread.currentThread().getName());
126 lock.readLock().lock();
128 LOG.info("Read Lock acquired by : {}", Thread.currentThread().getName());
132 private void releaseLock() {
133 if (lock.writeLock().isHeldByCurrentThread()) {
134 LOG.info("Write Lock released by : {}", Thread.currentThread().getName());
135 lock.writeLock().unlock();
139 private void releaseReadLock() {
140 LOG.info("Read Lock released by : {}", Thread.currentThread().getName());
141 lock.readLock().unlock();
144 private ReadWriteTransaction resetRwTx() {
145 LOG.info("Resetting the read write transaction .....");
146 rwTx = dataBroker.newReadWriteTransaction();