/*
    * 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.master;
  
  import com.facebook.swift.codec.ThriftField;
  import com.facebook.swift.codec.ThriftStruct;
  
  /**
   * Stores information about master progress
   */
  @ThriftStruct
  public final class MasterProgress {
    /** Singleton instance for everyone to use */
    private static final MasterProgress INSTANCE = new MasterProgress();
  
    /** How many vertex input splits were created */
    private int vertexInputSplitCount = -1;
    /** How many edge input splits were created */
    private int edgeInputSplitCount = -1;
  
    /**
     * Public constructor for thrift to create us.
     * Please use MasterProgress.get() to get the static instance.
     */
    public MasterProgress() {
    }
  
    /**
     * Get singleton instance of MasterProgress.
     *
     * @return MasterProgress singleton instance
     */
    public static MasterProgress get() {
      return INSTANCE;
    }
  
    @ThriftField(1)
    public int getVertexInputSplitCount() {
      return vertexInputSplitCount;
    }
  
    @ThriftField
    public void setVertexInputSplitCount(int vertexInputSplitCount) {
      this.vertexInputSplitCount = vertexInputSplitCount;
    }
  
    @ThriftField(2)
    public int getEdgeInputSplitsCount() {
      return edgeInputSplitCount;
    }
  
    @ThriftField
    public void setEdgeInputSplitsCount(int edgeInputSplitCount) {
      this.edgeInputSplitCount = edgeInputSplitCount;
    }
  
    /**
     * Whether or not number of vertex input splits was set yet
     *
     * @return True iff it was set
     */
    public boolean vertexInputSplitsSet() {
      return vertexInputSplitCount != -1;
    }
  
    /**
     * Whether or not number of edge input splits was set yet
     *
     * @return True iff it was set
     */
    public boolean edgeInputSplitsSet() {
      return edgeInputSplitCount != -1;
    }
  }