com.mellanox.r4h.R4HPipelineAck.java Source code

Introduction

Here is the source code for com.mellanox.r4h.R4HPipelineAck.java

Source

/*
 ** Copyright (C) 2014 Mellanox Technologies
 **
 ** Licensed 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.mellanox.r4h;

import org.apache.hadoop.hdfs.protocol.datatransfer.PipelineAck;
import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.Status;

public class R4HPipelineAck extends PipelineAck {

    /**
     * Constructor assuming no next DN in pipeline
     * @param seqno sequence number
     * @param replies an array of replies
     */
    public R4HPipelineAck(long seqno, Status[] replies) {
        super(seqno, toIntArray(replies));
    }

    /**
     * Constructor
     * @param seqno sequence number
     * @param replies an array of replies
     * @param downstreamAckTimeNanos ack RTT in nanoseconds, 0 if no next DN in pipeline
     */
    public R4HPipelineAck(long seqno, Status[] replies, long downstreamAckTimeNanos) {
        super(seqno, toIntArray(replies), downstreamAckTimeNanos);
    }

    /** default constructor **/
    public R4HPipelineAck() {
        super();
    }

    /**
     * get the ith reply - The api has been changed since hadoop 2.6
     * @return the the ith reply
     */
    public Status getReply(int i) {
        return PipelineAck.getStatusFromHeader(this.getHeaderFlag(i));
    }

    private static int[] toIntArray(Status[] statusArray) {
        int[] intArray = new int[statusArray.length];
        for (int i = 0; i < statusArray.length; i++) {
            intArray[i] = statusArray[i].getNumber();
        }
        return intArray;
    }
}