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