org.graylog2.outputs.DiscardMessageOutput 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.outputs;
import com.codahale.metrics.Meter;
import com.codahale.metrics.MetricRegistry;
import com.google.inject.assistedinject.Assisted;
import com.google.inject.assistedinject.AssistedInject;
import org.graylog2.plugin.Message;
import org.graylog2.plugin.configuration.Configuration;
import org.graylog2.plugin.configuration.ConfigurationRequest;
import org.graylog2.plugin.outputs.MessageOutput;
import org.graylog2.plugin.streams.Stream;
import org.graylog2.shared.journal.Journal;
import javax.inject.Inject;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
import static com.codahale.metrics.MetricRegistry.name;
public class DiscardMessageOutput implements MessageOutput {
private final AtomicBoolean isRunning = new AtomicBoolean(false);
private final Journal journal;
private final Meter messagesDiscarded;
@AssistedInject
public DiscardMessageOutput(final Journal journal,
final MetricRegistry metricRegistry,
@Assisted Stream stream,
@Assisted Configuration configuration) {
this(journal, metricRegistry);
}
@Inject
public DiscardMessageOutput(final Journal journal, final MetricRegistry metricRegistry) {
this.journal = journal;
this.messagesDiscarded = metricRegistry.meter(name(this.getClass(), "messagesDiscarded"));
isRunning.set(true);
}
@Override
public void stop() {
isRunning.set(false);
}
@Override
public boolean isRunning() {
return isRunning.get();
}
@Override
public void write(Message message) throws Exception {
journal.markJournalOffsetCommitted(message.getJournalOffset());
messagesDiscarded.mark();
}
@Override
public void write(List messages) throws Exception {
long maxOffset = Long.MIN_VALUE;
for (final Message message : messages) {
maxOffset = Math.max(message.getJournalOffset(), maxOffset);
}
journal.markJournalOffsetCommitted(maxOffset);
messagesDiscarded.mark(messages.size());
}
public interface Factory extends MessageOutput.Factory {
}
public static class Config extends MessageOutput.Config {
}
public static class Descriptor extends MessageOutput.Descriptor {
public Descriptor() {
super("Discard Message output", false, "", "Output that discards messages");
}
}
}