/*

  * 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 org.apache.giraph.aggregators.Aggregator;

 import org.apache.giraph.block_app.framework.api.BlockMasterApi;

 import org.apache.giraph.block_app.framework.api.BlockOutputApi;

 import org.apache.giraph.block_app.framework.api.BlockOutputHandleAccessor;

 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.BlockOutputHandle;

 import org.apache.giraph.block_app.framework.output.BlockOutputWriter;

 import org.apache.giraph.block_app.framework.piece.global_comm.BroadcastHandle;

 import org.apache.giraph.block_app.framework.piece.global_comm.internal.ReducersForPieceHandler.BroadcastHandleImpl;

 import org.apache.giraph.conf.ImmutableClassesGiraphConfiguration;

 import org.apache.giraph.master.MasterCompute;

 import org.apache.giraph.reducers.ReduceOperation;

 import org.apache.hadoop.io.Writable;

 /**

  * Giraph implementation of BlockMasterApi, that delegates all calls

  * to MasterCompute.

  */

 final class BlockMasterApiWrapper implements BlockMasterApi,

     BlockOutputApi, BlockOutputHandleAccessor {

   private final MasterCompute master;

   private final BlockOutputHandle outputHandle;

   public BlockMasterApiWrapper(MasterCompute master,

                                BlockOutputHandle outputHandle) {

     this.master = master;

     this.outputHandle = outputHandle;

   }

   @Override

   public ImmutableClassesGiraphConfiguration<?, ?, ?> getConf() {

     return master.getConf();

   }

   @Override

   public void setStatus(String status) {

     master.getContext().setStatus(status);

   }

   @Override

   public void progress() {

     master.getContext().progress();

   }

   @Override

   public Counter getCounter(String group, String name) {

     return BlockCounters.getCounter(master.getContext(), group, name);

   }

   @Override

   public <R extends Writable> R getReduced(String name) {

     return master.getReduced(name);

   }

   @Override

   public void broadcast(String name, Writable value) {

     master.broadcast(name, value);

   }

   @Override

   public <S, R extends Writable> void registerReducer(

       String name, ReduceOperation<S, R> reduceOp) {

     master.registerReducer(name, reduceOp);

   }

   @Override

   public <S, R extends Writable> void registerReducer(

       String name, ReduceOperation<S, R> reduceOp, R globalInitialValue) {

     master.registerReducer(name, reduceOp, globalInitialValue);

   }

   @Override

   public <A extends Writable> A getAggregatedValue(String name) {

     return master.getAggregatedValue(name);

   }

   @Override

   public <A extends Writable>

   boolean registerAggregator(

       String name, Class<? extends Aggregator<A>> aggregatorClass

   ) throws InstantiationException, IllegalAccessException {

     return master.registerAggregator(name, aggregatorClass);

   }

   @Override

   public <A extends Writable>

   boolean registerPersistentAggregator(

       String name, Class<? extends Aggregator<A>> aggregatorClass

   ) throws InstantiationException,

       IllegalAccessException {

     return master.registerPersistentAggregator(name, aggregatorClass);

   }

   @Override

   public <A extends Writable> void setAggregatedValue(String name, A value) {

     master.setAggregatedValue(name, value);

   }

   @Override

   public <T extends Writable> BroadcastHandle<T> broadcast(T object) {

     BroadcastHandleImpl<T> handle = new BroadcastHandleImpl<>();

     master.broadcast(handle.getName(), object);

     return handle;

   }

   @Override

   @Deprecated

   public long getTotalNumEdges() {

     return master.getTotalNumEdges();

   }

   @Override

   @Deprecated

   public long getTotalNumVertices() {

     return master.getTotalNumVertices();

   }

   @Override

   public void logToCommandLine(String line) {

     master.logToCommandLine(line);

   }

   @Override

   public <OW extends BlockOutputWriter,

       OD extends BlockOutputDesc<OW>> OD getOutputDesc(String confOption) {

     return outputHandle.<OW, OD>getOutputDesc(confOption);

   }

   @Override

   public <OW extends BlockOutputWriter> OW getWriter(String confOption) {

     return outputHandle.getWriter(confOption);

   }

   @Override

   public BlockOutputHandle getBlockOutputHandle() {

     return outputHandle;

   }

   @Override

   public int getWorkerCount() {

     return master.getWorkerInfoList().size();

   }

 }