opendaylight/md-sal/sal-dom-broker/src/main/java/org/opendaylight/controller/md/sal/dom/broker/impl/RoutedDOMRpcRoutingTableEntry.java

   1 /*
   2  * Copyright (c) 2015 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.md.sal.dom.broker.impl;
   9
  10 import com.google.common.base.Optional;
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.util.concurrent.CheckedFuture;
  13 import com.google.common.util.concurrent.Futures;
  14 import java.util.List;
  15 import java.util.Map;
  16 import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
  17 import org.opendaylight.controller.md.sal.dom.api.DOMRpcIdentifier;
  18 import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementation;
  19 import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementationNotAvailableException;
  20 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
  21 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
  22 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  23 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodes;
  24 import org.opendaylight.yangtools.yang.model.api.RpcDefinition;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 final class RoutedDOMRpcRoutingTableEntry extends AbstractDOMRpcRoutingTableEntry {
  29     private static final Logger LOG = LoggerFactory.getLogger(RoutedDOMRpcRoutingTableEntry.class);
  30     private final DOMRpcIdentifier globalRpcId;
  31     private final YangInstanceIdentifier keyId;
  32
  33     private RoutedDOMRpcRoutingTableEntry(final DOMRpcIdentifier globalRpcId, final YangInstanceIdentifier keyId,
  34                                           final Map<YangInstanceIdentifier, List<DOMRpcImplementation>> impls) {
  35         super(globalRpcId.getType(), impls);
  36         this.keyId = Preconditions.checkNotNull(keyId);
  37         this.globalRpcId = Preconditions.checkNotNull(globalRpcId);
  38     }
  39
  40     RoutedDOMRpcRoutingTableEntry(final RpcDefinition def, final YangInstanceIdentifier keyId,
  41                                   final Map<YangInstanceIdentifier, List<DOMRpcImplementation>> impls) {
  42         super(def.getPath(), impls);
  43         this.keyId = Preconditions.checkNotNull(keyId);
  44         this.globalRpcId = DOMRpcIdentifier.create(def.getPath());
  45     }
  46
  47     @Override
  48     protected CheckedFuture<DOMRpcResult, DOMRpcException> invokeRpc(final NormalizedNode<?, ?> input) {
  49         final Optional<NormalizedNode<?, ?>> maybeKey = NormalizedNodes.findNode(input, keyId);
  50
  51         // Routing key is present, attempt to deliver as a routed RPC
  52         if (maybeKey.isPresent()) {
  53             final NormalizedNode<?, ?> key = maybeKey.get();
  54             final Object value = key.getValue();
  55             if (value instanceof YangInstanceIdentifier) {
  56                 final YangInstanceIdentifier iid = (YangInstanceIdentifier) value;
  57
  58                 // Find a DOMRpcImplementation for a specific iid
  59                 final List<DOMRpcImplementation> specificImpls = getImplementations(iid);
  60                 if (specificImpls != null) {
  61                     return specificImpls.get(0).invokeRpc(DOMRpcIdentifier.create(getSchemaPath(), iid), input);
  62                 }
  63
  64                 LOG.debug("No implementation for context {} found will now look for wildcard id", iid);
  65
  66                 // Find a DOMRpcImplementation for a wild card. Usually remote-rpc-connector would register an
  67                 // implementation this way
  68                 final List<DOMRpcImplementation> mayBeRemoteImpls = getImplementations(YangInstanceIdentifier.EMPTY);
  69
  70                 if (mayBeRemoteImpls != null) {
  71                     return mayBeRemoteImpls.get(0).invokeRpc(DOMRpcIdentifier.create(getSchemaPath(), iid), input);
  72                 }
  73
  74             } else {
  75                 LOG.warn("Ignoring wrong context value {}", value);
  76             }
  77         }
  78
  79         final List<DOMRpcImplementation> impls = getImplementations(null);
  80         if (impls != null) {
  81             return impls.get(0).invokeRpc(globalRpcId, input);
  82         } else {
  83             return Futures.<DOMRpcResult, DOMRpcException>immediateFailedCheckedFuture(
  84                     new DOMRpcImplementationNotAvailableException("No implementation of RPC %s available",
  85                                                                   getSchemaPath()));
  86         }
  87     }
  88
  89     @Override
  90     protected RoutedDOMRpcRoutingTableEntry newInstance(
  91             final Map<YangInstanceIdentifier, List<DOMRpcImplementation>> impls) {
  92         return new RoutedDOMRpcRoutingTableEntry(globalRpcId, keyId, impls);
  93     }
  94 }