opendaylight/md-sal/samples/clustering-test-app/provider/src/main/java/org/opendaylight/controller/clustering/it/provider/impl/GetConstantService.java

   1 /*
   2  * Copyright (c) 2017 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   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
   7  */
   8
   9 package org.opendaylight.controller.clustering.it.provider.impl;
  10
  11 import com.google.common.util.concurrent.CheckedFuture;
  12 import com.google.common.util.concurrent.Futures;
  13 import javax.annotation.Nonnull;
  14 import javax.annotation.Nullable;
  15 import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
  16 import org.opendaylight.controller.md.sal.dom.api.DOMRpcIdentifier;
  17 import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementation;
  18 import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementationRegistration;
  19 import org.opendaylight.controller.md.sal.dom.api.DOMRpcProviderService;
  20 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
  21 import org.opendaylight.controller.md.sal.dom.spi.DefaultDOMRpcResult;
  22 import org.opendaylight.yangtools.yang.common.QName;
  23 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  24 import org.opendaylight.yangtools.yang.data.api.schema.ContainerNode;
  25 import org.opendaylight.yangtools.yang.data.api.schema.LeafNode;
  26 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  27 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableContainerNodeBuilder;
  28 import org.opendaylight.yangtools.yang.data.impl.schema.builder.impl.ImmutableLeafNodeBuilder;
  29 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 public final class GetConstantService implements DOMRpcImplementation {
  34
  35     private static final Logger LOG = LoggerFactory.getLogger(GetConstantService.class);
  36
  37     private static final QName OUTPUT =
  38             QName.create("tag:opendaylight.org,2017:controller:yang:lowlevel:target","2017-02-15", "output");
  39     private static final QName CONSTANT =
  40             QName.create("tag:opendaylight.org,2017:controller:yang:lowlevel:target","2017-02-15", "constant");
  41     private static final QName GET_CONSTANT =
  42             QName.create("tag:opendaylight.org,2017:controller:yang:lowlevel:target","2017-02-15", "get-constant");
  43
  44     private final String constant;
  45
  46     private GetConstantService(final String constant) {
  47         this.constant = constant;
  48     }
  49
  50     public static DOMRpcImplementationRegistration<GetConstantService> registerNew(
  51             final DOMRpcProviderService rpcProviderService, final String constant) {
  52
  53         LOG.debug("Registering get-constant service, constant value: {}", constant);
  54         final DOMRpcIdentifier id = DOMRpcIdentifier.create(SchemaPath.create(true, GET_CONSTANT));
  55
  56         return rpcProviderService.registerRpcImplementation(new GetConstantService(constant), id);
  57     }
  58
  59     @Nonnull
  60     @Override
  61     public CheckedFuture<DOMRpcResult, DOMRpcException> invokeRpc(@Nonnull final DOMRpcIdentifier rpc,
  62                                                                   @Nullable final NormalizedNode<?, ?> input) {
  63         LOG.debug("get-constant invoked, current value: {}", constant);
  64
  65         final LeafNode<Object> value = ImmutableLeafNodeBuilder.create()
  66                 .withNodeIdentifier(new NodeIdentifier(CONSTANT))
  67                 .withValue(constant)
  68                 .build();
  69
  70         final ContainerNode result = ImmutableContainerNodeBuilder.create()
  71                 .withNodeIdentifier(new NodeIdentifier(OUTPUT))
  72                 .withChild(value)
  73                 .build();
  74
  75         return Futures.immediateCheckedFuture(new DefaultDOMRpcResult(result));
  76     }
  77 }