/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.giraph.block_app.framework.api.giraph;
  
  import java.io.IOException;
  import java.util.Iterator;
  
  import org.apache.giraph.block_app.framework.api.BlockOutputApi;
  import org.apache.giraph.block_app.framework.api.BlockWorkerReceiveApi;
  import org.apache.giraph.block_app.framework.api.BlockWorkerSendApi;
  import org.apache.giraph.block_app.framework.api.BlockWorkerValueAccessor;
  import org.apache.giraph.block_app.framework.api.Counter;
  import org.apache.giraph.block_app.framework.internal.BlockCounters;
  import org.apache.giraph.block_app.framework.output.BlockOutputDesc;
  import org.apache.giraph.block_app.framework.output.BlockOutputWriter;
  import org.apache.giraph.conf.ImmutableClassesGiraphConfiguration;
  import org.apache.giraph.edge.Edge;
  import org.apache.giraph.edge.OutEdges;
  import org.apache.giraph.graph.Computation;
  import org.apache.giraph.graph.Vertex;
  import org.apache.giraph.types.NoMessage;
  import org.apache.giraph.worker.WorkerGlobalCommUsage;
  import org.apache.hadoop.io.Writable;
  import org.apache.hadoop.io.WritableComparable;
  
  /**
   * Giraph implementation of BlockWorkerReceiveApi and BlockWorkerSendAPI,
   * passing all calls to Computation.
   *
   * @param <I> Vertex id type
   * @param <V> Vertex value type
   * @param <E> Edge value type
   * @param <M> Message type
   */
  @SuppressWarnings("rawtypes")
  final class BlockWorkerApiWrapper<I extends WritableComparable,
      V extends Writable, E extends Writable, M extends Writable>
      implements BlockWorkerReceiveApi<I>, BlockWorkerSendApi<I, V, E, M>,
      BlockWorkerValueAccessor, WorkerGlobalCommUsage, BlockOutputApi {
    private final Computation<I, V, E, NoMessage, M> worker;
  
    public BlockWorkerApiWrapper(Computation<I, V, E, NoMessage, M> worker) {
      this.worker = worker;
    }
  
    @Override
    public ImmutableClassesGiraphConfiguration<I, V, E> getConf() {
      return worker.getConf();
    }
  
    @Override
    public <A extends Writable> void aggregate(String name, A value) {
      worker.aggregate(name, value);
    }
  
    @Override
    public <A extends Writable> A getAggregatedValue(String name) {
      return worker.getAggregatedValue(name);
    }
  
    @Override
    public <B extends Writable> B getBroadcast(String name) {
      return worker.getBroadcast(name);
    }
  
    @Override
    public void reduce(String name, Object value) {
      worker.reduce(name, value);
    }
  
    @Override
    public void reduceMerge(String name, Writable value) {
      worker.reduceMerge(name, value);
    }
  
    @Override
    public void sendMessage(I id, M message) {
      worker.sendMessage(id, message);
    }
  
    @Override
    public void sendMessageToAllEdges(Vertex<I, V, E> vertex, M message) {
      worker.sendMessageToAllEdges(vertex, message);
    }
 
   @Override
   public void sendMessageToMultipleEdges(
       Iterator<I> vertexIdIterator, M message) {
     worker.sendMessageToMultipleEdges(vertexIdIterator, message);
   }
 
   @Override
   public void addVertexRequest(I id, V value) {
     try {
       worker.addVertexRequest(id, value);
     } catch (IOException e) {
       throw new RuntimeException(e);
     }
   }
 
   @Override
   public void addVertexRequest(I id, V value, OutEdges<I, E> edges) {
     try {
       worker.addVertexRequest(id, value, edges);
     } catch (IOException e) {
       throw new RuntimeException(e);
     }
   }
 
   @Override
   public void removeVertexRequest(I vertexId) {
     try {
       worker.removeVertexRequest(vertexId);
     } catch (IOException e) {
       throw new RuntimeException(e);
     }
   }
 
   @Override
   public void addEdgeRequest(I sourceVertexId, Edge<I, E> edge) {
     try {
       worker.addEdgeRequest(sourceVertexId, edge);
     } catch (IOException e) {
       throw new RuntimeException(e);
     }
   }
 
   @Override
   public void removeEdgesRequest(I sourceVertexId, I targetVertexId) {
     try {
       worker.removeEdgesRequest(sourceVertexId, targetVertexId);
     } catch (IOException e) {
       throw new RuntimeException(e);
     }
   }
 
   private BlockWorkerContext getBlockWorkerContext() {
     return (BlockWorkerContext) worker.getWorkerContext();
   }
 
   @Override
   public Object getWorkerValue() {
     return getBlockWorkerContext().getWorkerValue();
   }
 
   @Override
   public long getTotalNumEdges() {
     return worker.getTotalNumEdges();
   }
 
   @Override
   public long getTotalNumVertices() {
     return worker.getTotalNumVertices();
   }
 
   @Override
   public <OW extends BlockOutputWriter, OD extends BlockOutputDesc<OW>>
   OD getOutputDesc(String confOption) {
     return getBlockWorkerContext().getOutputHandle().<OW, OD>getOutputDesc(
         confOption);
   }
 
   @Override
   public <OW extends BlockOutputWriter> OW getWriter(String confOption) {
     return getBlockWorkerContext().getOutputHandle().getWriter(confOption);
   }
 
   @Override
   public int getMyWorkerIndex() {
     return worker.getMyWorkerIndex();
   }
 
   @Override
   public int getWorkerCount() {
     return worker.getWorkerCount();
   }
 
   @Override
   public int getWorkerForVertex(I vertexId) {
     return worker.getWorkerForVertex(vertexId);
   }
 
   @Override
   public Counter getCounter(String group, String name) {
     return BlockCounters.getCounter(worker.getContext(), group, name);
   }
 
   @Override
   public void progress() {
     worker.getContext().progress();
   }
 
   @Override
   public void setStatus(String status) {
     worker.getContext().setStatus(status);
   }
 }