openflowplugin/src/main/java/org/opendaylight/openflowplugin/openflow/md/util/RpcResultUtil.java

   1 /**
   2  * Copyright (c) 2014 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.openflowplugin.openflow.md.util;
   9
  10 import com.google.common.util.concurrent.SettableFuture;
  11 import java.util.ArrayList;
  12 import java.util.List;
  13 import org.opendaylight.openflowplugin.api.ConnectionException;
  14 import org.opendaylight.openflowplugin.api.OFConstants;
  15 import org.opendaylight.openflowplugin.api.openflow.md.core.session.IMessageDispatchService;
  16 import org.opendaylight.yangtools.yang.common.RpcError;
  17 import org.opendaylight.yangtools.yang.common.RpcResult;
  18 import org.opendaylight.yangtools.yang.common.RpcResultBuilder;
  19
  20 /**
  21  *
  22  */
  23 public final class RpcResultUtil {
  24
  25     private RpcResultUtil() {
  26         throw new UnsupportedOperationException("RpcResultUtil is not expected to be instantiated.");
  27     }
  28
  29     /**
  30      * @param e connection exception
  31      * @param <T> rpc result return type
  32      * @return error wrapped inside {@link RpcResult} which is wrapped inside future
  33      */
  34     public static <T> SettableFuture<RpcResult<T>> getRpcErrorFuture(ConnectionException e) {
  35         List<RpcError> rpcErrorList = wrapConnectionErrorIntoRpcErrors(e);
  36         SettableFuture<RpcResult<T>> futureWithError = SettableFuture.create();
  37         futureWithError.set(RpcResultBuilder.<T>failed().withRpcErrors(rpcErrorList).build());
  38         return futureWithError;
  39     }
  40
  41     private static List<RpcError> wrapConnectionErrorIntoRpcErrors(ConnectionException e) {
  42         List<RpcError> rpcErrorList = new ArrayList<>();
  43         rpcErrorList.add(RpcResultBuilder.newError(
  44                 RpcError.ErrorType.TRANSPORT,
  45                 OFConstants.ERROR_TAG_TIMEOUT,
  46                 e.getMessage(),
  47                 OFConstants.APPLICATION_TAG,
  48                 IMessageDispatchService.CONNECTION_ERROR_MESSAGE,
  49                 e.getCause()));
  50         return rpcErrorList;
  51     }
  52
  53 }