2 * Copyright (c) 2017 Cisco Systems, 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.controller.clustering.it.provider.impl;
10 import com.google.common.util.concurrent.Futures;
11 import com.google.common.util.concurrent.ListenableFuture;
12 import org.opendaylight.mdsal.dom.api.DOMRpcIdentifier;
13 import org.opendaylight.mdsal.dom.api.DOMRpcImplementation;
14 import org.opendaylight.mdsal.dom.api.DOMRpcImplementationRegistration;
15 import org.opendaylight.mdsal.dom.api.DOMRpcProviderService;
16 import org.opendaylight.mdsal.dom.api.DOMRpcResult;
17 import org.opendaylight.mdsal.dom.spi.DefaultDOMRpcResult;
18 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonService;
19 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceProvider;
20 import org.opendaylight.mdsal.singleton.common.api.ClusterSingletonServiceRegistration;
21 import org.opendaylight.mdsal.singleton.common.api.ServiceGroupIdentifier;
22 import org.opendaylight.yangtools.yang.common.QName;
23 import org.opendaylight.yangtools.yang.common.QNameModule;
24 import org.opendaylight.yangtools.yang.common.Revision;
25 import org.opendaylight.yangtools.yang.common.XMLNamespace;
26 import org.opendaylight.yangtools.yang.common.YangConstants;
27 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
28 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
29 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
30 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
31 import org.slf4j.Logger;
32 import org.slf4j.LoggerFactory;
34 public final class SingletonGetConstantService implements DOMRpcImplementation, ClusterSingletonService {
36 private static final Logger LOG = LoggerFactory.getLogger(SingletonGetConstantService.class);
38 private static final QNameModule MODULE = QNameModule.create(
39 XMLNamespace.of("tag:opendaylight.org,2017:controller:yang:lowlevel:target"), Revision.of("2017-02-15"))
41 private static final QName OUTPUT = YangConstants.operationOutputQName(MODULE).intern();
42 private static final QName CONSTANT = QName.create(MODULE, "constant").intern();
43 private static final QName CONTEXT = QName.create(MODULE, "context").intern();
44 private static final QName GET_SINGLETON_CONSTANT = QName.create(MODULE, "get-singleton-constant").intern();
46 private static final ServiceGroupIdentifier SERVICE_GROUP_IDENTIFIER =
47 ServiceGroupIdentifier.create("get-singleton-constant-service");
49 private final DOMRpcProviderService rpcProviderService;
50 private final String constant;
51 private DOMRpcImplementationRegistration<SingletonGetConstantService> rpcRegistration;
53 private SingletonGetConstantService(final DOMRpcProviderService rpcProviderService, final String constant) {
54 this.rpcProviderService = rpcProviderService;
55 this.constant = constant;
58 public static ClusterSingletonServiceRegistration registerNew(
59 final ClusterSingletonServiceProvider singletonService, final DOMRpcProviderService rpcProviderService,
60 final String constant) {
61 LOG.debug("Registering get-singleton-constant into ClusterSingletonService, value {}", constant);
63 return singletonService.registerClusterSingletonService(
64 new SingletonGetConstantService(rpcProviderService, constant));
68 public ListenableFuture<DOMRpcResult> invokeRpc(final DOMRpcIdentifier rpc, final ContainerNode input) {
69 LOG.debug("get-singleton-constant invoked, current value: {}", constant);
71 return Futures.immediateFuture(new DefaultDOMRpcResult(Builders.containerBuilder()
72 .withNodeIdentifier(new NodeIdentifier(OUTPUT))
73 .withChild(ImmutableNodes.leafNode(CONSTANT, constant))
78 public void instantiateServiceInstance() {
79 LOG.debug("Gained ownership of get-singleton-constant, registering service into rpcService");
80 final DOMRpcIdentifier id = DOMRpcIdentifier.create(GET_SINGLETON_CONSTANT);
82 rpcRegistration = rpcProviderService.registerRpcImplementation(this, id);
86 public ListenableFuture<Void> closeServiceInstance() {
87 LOG.debug("Closing get-singleton-constant instance");
88 rpcRegistration.close();
89 return Futures.immediateFuture(null);
93 public ServiceGroupIdentifier getIdentifier() {
94 return SERVICE_GROUP_IDENTIFIER;