com.mysql.cj.mysqla.io.TimeTrackingPacketReader Maven / Gradle / Ivy

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JDBC Type 4 driver for MySQL
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/*
  Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.

  The MySQL Connector/J is licensed under the terms of the GPLv2
  , like most MySQL Connectors.
  There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
  this software, see the FOSS License Exception
  .

  This program is free software; you can redistribute it and/or modify it under the terms
  of the GNU General Public License as published by the Free Software Foundation; version 2
  of the License.

  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU General Public License for more details.

  You should have received a copy of the GNU General Public License along with this
  program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
  Floor, Boston, MA 02110-1301  USA

 */

package com.mysql.cj.mysqla.io;

import java.io.IOException;
import java.util.Optional;

import com.mysql.cj.api.io.PacketReceivedTimeHolder;
import com.mysql.cj.api.mysqla.io.PacketHeader;
import com.mysql.cj.api.mysqla.io.PacketPayload;
import com.mysql.cj.api.mysqla.io.PacketReader;

/**
 * A {@link PacketReader} which tracks the last time a packet was received.
 */
public class TimeTrackingPacketReader implements PacketReader, PacketReceivedTimeHolder {

    private PacketReader packetReader;
    private long lastPacketReceivedTimeMs = 0;

    public TimeTrackingPacketReader(PacketReader packetReader) {
        this.packetReader = packetReader;
    }

    @Override
    public PacketHeader readHeader() throws IOException {
        return this.packetReader.readHeader();
    }

    @Override
    public PacketPayload readPayload(Optional reuse, int packetLength) throws IOException {
        PacketPayload buf = this.packetReader.readPayload(reuse, packetLength);
        this.lastPacketReceivedTimeMs = System.currentTimeMillis();
        return buf;
    }

    @Override
    public long getLastPacketReceivedTime() {
        return this.lastPacketReceivedTimeMs;
    }

    @Override
    public byte getPacketSequence() {
        return this.packetReader.getPacketSequence();
    }

    @Override
    public void resetPacketSequence() {
        this.packetReader.resetPacketSequence();
    }

    @Override
    public PacketReader undecorateAll() {
        return this.packetReader.undecorateAll();
    }

    @Override
    public PacketReader undecorate() {
        return this.packetReader;
    }

}