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.DOMRpcProviderService;
15 import org.opendaylight.mdsal.dom.api.DOMRpcResult;
16 import org.opendaylight.mdsal.dom.spi.DefaultDOMRpcResult;
17 import org.opendaylight.mdsal.singleton.api.ClusterSingletonService;
18 import org.opendaylight.mdsal.singleton.api.ClusterSingletonServiceProvider;
19 import org.opendaylight.mdsal.singleton.api.ServiceGroupIdentifier;
20 import org.opendaylight.yangtools.concepts.Registration;
21 import org.opendaylight.yangtools.yang.common.QName;
22 import org.opendaylight.yangtools.yang.common.QNameModule;
23 import org.opendaylight.yangtools.yang.common.Revision;
24 import org.opendaylight.yangtools.yang.common.XMLNamespace;
25 import org.opendaylight.yangtools.yang.common.YangConstants;
26 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
27 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
28 import org.opendaylight.yangtools.yang.data.impl.schema.Builders;
29 import org.opendaylight.yangtools.yang.data.impl.schema.ImmutableNodes;
30 import org.slf4j.Logger;
31 import org.slf4j.LoggerFactory;
33 public final class SingletonGetConstantService implements DOMRpcImplementation, ClusterSingletonService {
34 private static final Logger LOG = LoggerFactory.getLogger(SingletonGetConstantService.class);
36 private static final QNameModule MODULE = QNameModule.create(
37 XMLNamespace.of("tag:opendaylight.org,2017:controller:yang:lowlevel:target"), Revision.of("2017-02-15"))
39 private static final QName OUTPUT = YangConstants.operationOutputQName(MODULE).intern();
40 private static final QName CONSTANT = QName.create(MODULE, "constant").intern();
41 private static final QName CONTEXT = QName.create(MODULE, "context").intern();
42 private static final QName GET_SINGLETON_CONSTANT = QName.create(MODULE, "get-singleton-constant").intern();
44 private static final ServiceGroupIdentifier SERVICE_GROUP_IDENTIFIER =
45 new ServiceGroupIdentifier("get-singleton-constant-service");
47 private final DOMRpcProviderService rpcProviderService;
48 private final String constant;
50 private Registration rpcRegistration = null;
52 private SingletonGetConstantService(final DOMRpcProviderService rpcProviderService, final String constant) {
53 this.rpcProviderService = rpcProviderService;
54 this.constant = constant;
57 public static Registration registerNew(final ClusterSingletonServiceProvider singletonService,
58 final DOMRpcProviderService rpcProviderService, final String constant) {
59 LOG.debug("Registering get-singleton-constant into ClusterSingletonService, value {}", constant);
61 return singletonService.registerClusterSingletonService(
62 new SingletonGetConstantService(rpcProviderService, constant));
66 public ListenableFuture<DOMRpcResult> invokeRpc(final DOMRpcIdentifier rpc, final ContainerNode input) {
67 LOG.debug("get-singleton-constant invoked, current value: {}", constant);
69 return Futures.immediateFuture(new DefaultDOMRpcResult(Builders.containerBuilder()
70 .withNodeIdentifier(new NodeIdentifier(OUTPUT))
71 .withChild(ImmutableNodes.leafNode(CONSTANT, constant))
76 public void instantiateServiceInstance() {
77 LOG.debug("Gained ownership of get-singleton-constant, registering service into rpcService");
78 final DOMRpcIdentifier id = DOMRpcIdentifier.create(GET_SINGLETON_CONSTANT);
80 rpcRegistration = rpcProviderService.registerRpcImplementation(this, id);
84 public ListenableFuture<Void> closeServiceInstance() {
85 LOG.debug("Closing get-singleton-constant instance");
86 rpcRegistration.close();
87 return Futures.immediateFuture(null);
91 public ServiceGroupIdentifier getIdentifier() {
92 return SERVICE_GROUP_IDENTIFIER;