org.voltdb.iv2.SiteTasker Maven / Gradle / Ivy
/* This file is part of VoltDB.
* Copyright (C) 2008-2020 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.voltdb.iv2;
import java.io.IOException;
import org.voltdb.SiteProcedureConnection;
import org.voltdb.rejoin.TaskLog;
public abstract class SiteTasker {
private long queueOfferTime = -1L;
public void setQueueOfferTime() {
queueOfferTime = System.nanoTime();
}
public long getQueueOfferTime() {
return queueOfferTime;
}
public static abstract class SiteTaskerRunnable extends SiteTasker {
protected String taskInfo = "";
abstract void run();
@Override
public void run(SiteProcedureConnection siteConnection) {
run();
}
@Override
public void runForRejoin(SiteProcedureConnection siteConnection,
TaskLog rejoinTaskLog) throws IOException {
run();
}
@Override
public String getTaskInfo() {
return taskInfo;
}
}
/**
* Run executes the task. Run is called on the ExecutionSite thread
* and has exclusive access to the ee. Tasks are not preempted.
*/
abstract public void run(SiteProcedureConnection siteConnection);
/**
* Run the task on an inconsistent/rejoining EE.
*/
abstract public void runForRejoin(SiteProcedureConnection siteConnection,
TaskLog rejoinTaskLog) throws IOException;
public String getTaskInfo() {
return getClass().getSimpleName();
}
}