| /* |
| * Copyright 2017 HugeGraph Authors |
| * |
| * 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 com.baidu.hugegraph.computer.core.input; |
| |
| import java.util.List; |
| import java.util.Queue; |
| import java.util.concurrent.LinkedBlockingQueue; |
| |
| import com.baidu.hugegraph.computer.core.rpc.InputSplitRpcService; |
| |
| public class MasterInputHandler implements InputSplitRpcService { |
| |
| private final InputSplitFetcher fetcher; |
| private final Queue<InputSplit> vertexSplits; |
| private final Queue<InputSplit> edgeSplits; |
| |
| public MasterInputHandler(InputSplitFetcher fetcher) { |
| this.fetcher = fetcher; |
| this.vertexSplits = new LinkedBlockingQueue<>(); |
| this.edgeSplits = new LinkedBlockingQueue<>(); |
| } |
| |
| public int createVertexInputSplits() { |
| List<InputSplit> splits = this.fetcher.fetchVertexInputSplits(); |
| for (InputSplit split : splits) { |
| this.vertexSplits.offer(split); |
| } |
| return this.vertexSplits.size(); |
| } |
| |
| public int createEdgeInputSplits() { |
| List<InputSplit> splits = this.fetcher.fetchEdgeInputSplits(); |
| for (InputSplit split : splits) { |
| this.edgeSplits.offer(split); |
| } |
| return this.edgeSplits.size(); |
| } |
| |
| @Override |
| public InputSplit nextVertexInputSplit() { |
| InputSplit split = this.vertexSplits.poll(); |
| return split != null ? split : InputSplit.END_SPLIT; |
| } |
| |
| @Override |
| public InputSplit nextEdgeInputSplit() { |
| InputSplit split = this.edgeSplits.poll(); |
| return split != null ? split : InputSplit.END_SPLIT; |
| } |
| } |