org.voltcore.messaging.HeartbeatResponseMessage Maven / Gradle / Ivy
/* This file is part of VoltDB.
* Copyright (C) 2008-2018 VoltDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with VoltDB. If not, see .
*/
package org.voltcore.messaging;
import java.nio.ByteBuffer;
import org.voltcore.agreement.DtxnConstants;
public class HeartbeatResponseMessage extends VoltMessage {
long m_execHSId;
long m_lastReceivedTxnId; // this is the largest txn seen by the exec site from the destination init site
boolean m_siteIsBlocked;
HeartbeatResponseMessage() {
super();
m_lastReceivedTxnId = DtxnConstants.DUMMY_LAST_SEEN_TXN_ID; // -1
m_execHSId = -1;
m_siteIsBlocked = false;
}
public HeartbeatResponseMessage(long execHSId, long lastSeenTxnFromInitiator, boolean siteIsBlocked) {
m_execHSId = execHSId;
m_lastReceivedTxnId = lastSeenTxnFromInitiator;
m_siteIsBlocked = siteIsBlocked;
}
public long getExecHSId() {
return m_execHSId;
}
public long getLastReceivedTxnId() {
return m_lastReceivedTxnId;
}
public boolean isBlocked() {
return m_siteIsBlocked;
}
@Override
public int getSerializedSize() {
int msgsize = 8 + 8 + 1 + super.getSerializedSize();
return msgsize;
}
@Override
public void flattenToBuffer(ByteBuffer buf) {
buf.put(VoltMessageFactory.HEARTBEAT_RESPONSE_ID);
buf.putLong(m_execHSId);
buf.putLong(m_lastReceivedTxnId);
buf.put((byte) (m_siteIsBlocked ? 1 : 0));
assert(buf.capacity() == buf.position());
buf.limit(buf.position());
}
@Override
public void initFromBuffer(ByteBuffer buf) {
m_execHSId = buf.getLong();
m_lastReceivedTxnId = buf.getLong();
m_siteIsBlocked = (buf.get() == 1);
assert(buf.capacity() == buf.position());
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("HEARTBEAT_RESPONSE");
sb.append(" (EXEC ").append((int)m_execHSId).append(':').append((int)(m_execHSId >> 32));
sb.append(", LAST_REC ").append(m_lastReceivedTxnId);
sb.append(", BLOCKED ").append(m_siteIsBlocked ? "YES" : "NO");
sb.append(")");
return sb.toString();
}
}