org.graylog2.periodical.ClusterIdGeneratorPeriodical Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog 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, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog 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 Graylog. If not, see .
*/
package org.graylog2.periodical;
import org.graylog2.plugin.cluster.ClusterConfigService;
import org.graylog2.plugin.cluster.ClusterId;
import org.graylog2.plugin.periodical.Periodical;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Inject;
import java.util.UUID;
public class ClusterIdGeneratorPeriodical extends Periodical {
private static final Logger LOG = LoggerFactory.getLogger(ClusterIdGeneratorPeriodical.class);
private final ClusterConfigService clusterConfigService;
@Inject
public ClusterIdGeneratorPeriodical(ClusterConfigService clusterConfigService) {
this.clusterConfigService = clusterConfigService;
}
@Override
public boolean runsForever() {
return true;
}
@Override
public boolean stopOnGracefulShutdown() {
return false;
}
@Override
public boolean masterOnly() {
return true;
}
@Override
public boolean startOnThisNode() {
return true;
}
@Override
public boolean isDaemon() {
return true;
}
@Override
public int getInitialDelaySeconds() {
return 0;
}
@Override
public int getPeriodSeconds() {
return 0;
}
@Override
protected Logger getLogger() {
return LOG;
}
@Override
public void doRun() {
if(clusterConfigService.get(ClusterId.class) == null) {
ClusterId clusterId = ClusterId.create(UUID.randomUUID().toString());
clusterConfigService.write(clusterId);
LOG.debug("Generated cluster ID {}", clusterId.clusterId());
}
}
}