binding/mdsal-binding-dom-adapter/src/main/java/org/opendaylight/mdsal/binding/dom/adapter/BindingOperationFluentFuture.java

   1 /*
   2  * Copyright (c) 2018 Pantheon Technologies, s.r.o. 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.mdsal.binding.dom.adapter;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.util.concurrent.AbstractFuture;
  13 import com.google.common.util.concurrent.Futures;
  14 import com.google.common.util.concurrent.ListenableFuture;
  15 import com.google.common.util.concurrent.MoreExecutors;
  16 import java.util.concurrent.ExecutionException;
  17 import org.opendaylight.mdsal.dom.api.DOMRpcResult;
  18 import org.opendaylight.mdsal.dom.spi.DefaultDOMRpcResult;
  19 import org.opendaylight.yangtools.yang.binding.Action;
  20 import org.opendaylight.yangtools.yang.binding.RpcOutput;
  21 import org.opendaylight.yangtools.yang.common.RpcResult;
  22 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
  23
  24 final class BindingOperationFluentFuture<O extends RpcOutput> extends AbstractFuture<DOMRpcResult>
  25         implements BindingRpcFutureAware {
  26     private final ListenableFuture<RpcResult<O>> userFuture;
  27     private final Class<? extends Action<?, ?, O>> action;
  28     private final NodeIdentifier identifier;
  29
  30     private AdapterContext adapterContext;
  31
  32     BindingOperationFluentFuture(final ListenableFuture<RpcResult<O>> userFuture,
  33             final Class<? extends Action<?, ?, O>> action, final NodeIdentifier identifier,
  34             final AdapterContext adapterContext) {
  35         this.userFuture = requireNonNull(userFuture);
  36         this.action = requireNonNull(action);
  37         this.identifier = requireNonNull(identifier);
  38         this.adapterContext = requireNonNull(adapterContext);
  39         userFuture.addListener(this::userFutureCompleted, MoreExecutors.directExecutor());
  40     }
  41
  42     @SuppressWarnings({ "rawtypes", "unchecked" })
  43     @Override
  44     public ListenableFuture<RpcResult<?>> getBindingFuture() {
  45         return (ListenableFuture) userFuture;
  46     }
  47
  48     @SuppressWarnings("checkstyle:illegalCatch")
  49     private void userFutureCompleted() {
  50         final DOMRpcResult domResult;
  51
  52         try {
  53             final var bindingResult = Futures.getDone(userFuture);
  54             final var bindingValue = bindingResult.getResult();
  55             domResult = new DefaultDOMRpcResult(bindingValue == null ? null
  56                 : adapterContext.currentSerializer().toLazyNormalizedNodeActionOutput(action, identifier, bindingValue),
  57                 bindingResult.getErrors());
  58         } catch (ExecutionException e) {
  59             adapterContext = null;
  60             setException(e.getCause());
  61             return;
  62         } catch (RuntimeException | Error e) {
  63             adapterContext = null;
  64             setException(e);
  65             return;
  66         }
  67
  68         adapterContext = null;
  69         set(domResult);
  70     }
  71 }