netconf/sal-netconf-connector/src/main/java/org/opendaylight/netconf/sal/connect/netconf/sal/SchemalessNetconfDeviceRpc.java

   1 /*
   2  * Copyright (c) 2016 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.netconf.sal.connect.netconf.sal;
   9
  10 import com.google.common.base.Function;
  11 import com.google.common.util.concurrent.CheckedFuture;
  12 import com.google.common.util.concurrent.Futures;
  13 import com.google.common.util.concurrent.ListenableFuture;
  14 import javax.annotation.Nonnull;
  15 import javax.annotation.Nullable;
  16 import org.opendaylight.controller.md.sal.dom.api.DOMRpcAvailabilityListener;
  17 import org.opendaylight.controller.md.sal.dom.api.DOMRpcException;
  18 import org.opendaylight.controller.md.sal.dom.api.DOMRpcImplementationNotAvailableException;
  19 import org.opendaylight.controller.md.sal.dom.api.DOMRpcResult;
  20 import org.opendaylight.controller.md.sal.dom.api.DOMRpcService;
  21 import org.opendaylight.controller.md.sal.dom.spi.DefaultDOMRpcResult;
  22 import org.opendaylight.netconf.api.NetconfMessage;
  23 import org.opendaylight.netconf.sal.connect.api.MessageTransformer;
  24 import org.opendaylight.netconf.sal.connect.api.RemoteDeviceCommunicator;
  25 import org.opendaylight.netconf.sal.connect.netconf.schema.mapping.BaseRpcSchemalessTransformer;
  26 import org.opendaylight.netconf.sal.connect.netconf.schema.mapping.SchemalessMessageTransformer;
  27 import org.opendaylight.netconf.sal.connect.netconf.util.NetconfMessageTransformUtil;
  28 import org.opendaylight.netconf.sal.connect.util.RemoteDeviceId;
  29 import org.opendaylight.yangtools.concepts.ListenerRegistration;
  30 import org.opendaylight.yangtools.yang.common.RpcResult;
  31 import org.opendaylight.yangtools.yang.data.api.schema.AnyXmlNode;
  32 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
  33 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
  34
  35 /**
  36  * Invokes RPC by sending netconf message via listener. Also transforms result from NetconfMessage to CompositeNode.
  37  */
  38 public final class SchemalessNetconfDeviceRpc implements DOMRpcService {
  39
  40     private final RemoteDeviceCommunicator<NetconfMessage> listener;
  41     private final BaseRpcSchemalessTransformer baseRpcTransformer;
  42     private final SchemalessMessageTransformer schemalessTransformer;
  43     private final RemoteDeviceId deviceId;
  44
  45     public SchemalessNetconfDeviceRpc(final RemoteDeviceId deviceId, final RemoteDeviceCommunicator<NetconfMessage> listener,
  46                                       final BaseRpcSchemalessTransformer baseRpcTransformer,
  47                                       final SchemalessMessageTransformer messageTransformer) {
  48         this.deviceId = deviceId;
  49         this.listener = listener;
  50         this.baseRpcTransformer = baseRpcTransformer;
  51         this.schemalessTransformer = messageTransformer;
  52     }
  53
  54     @Nonnull
  55     @Override
  56     public CheckedFuture<DOMRpcResult, DOMRpcException> invokeRpc(@Nonnull final SchemaPath type,
  57                                                                   @Nullable final NormalizedNode<?, ?> input) {
  58         final MessageTransformer<NetconfMessage> transformer;
  59         if (input instanceof AnyXmlNode) {
  60             transformer = schemalessTransformer;
  61         } else if (isBaseRpc(type)) {
  62             transformer = baseRpcTransformer;
  63         } else {
  64             return Futures.immediateFailedCheckedFuture(new DOMRpcImplementationNotAvailableException("Unable to invoke rpc %s", type));
  65         }
  66         return handleRpc(type, input, transformer);
  67     }
  68
  69     private CheckedFuture<DOMRpcResult, DOMRpcException> handleRpc(@Nonnull final SchemaPath type,
  70                                                                    @Nullable final NormalizedNode<?, ?> input,
  71                                                                    final MessageTransformer<NetconfMessage> transformer) {
  72         final NetconfMessage netconfMessage = transformer.toRpcRequest(type, input);
  73         final ListenableFuture<RpcResult<NetconfMessage>> rpcResultListenableFuture = listener.sendRequest(netconfMessage, type.getLastComponent());
  74
  75         final ListenableFuture<DOMRpcResult> transformed = Futures.transform(rpcResultListenableFuture, (Function<RpcResult<NetconfMessage>, DOMRpcResult>) input1 -> {
  76             if (input1.isSuccessful()) {
  77                 return transformer.toRpcResult(input1.getResult(), type);
  78             } else {
  79                 return new DefaultDOMRpcResult(input1.getErrors());
  80             }
  81         });
  82
  83         return Futures.makeChecked(transformed, new Function<Exception, DOMRpcException>() {
  84             @Nullable
  85             @Override
  86             public DOMRpcException apply(@Nullable final Exception e) {
  87                 return new DOMRpcImplementationNotAvailableException(e, "Unable to invoke rpc %s on device %s", type, deviceId);
  88             }
  89         });
  90     }
  91
  92
  93     private static boolean isBaseRpc(final SchemaPath type) {
  94         return NetconfMessageTransformUtil.NETCONF_URI.equals(type.getLastComponent().getNamespace());
  95     }
  96
  97     @Nonnull
  98     @Override
  99     public <T extends DOMRpcAvailabilityListener> ListenerRegistration<T> registerRpcListener(@Nonnull final T listener) {
 100         throw new UnsupportedOperationException("Not available for netconf 1.0");
 101     }
 102
 103 }