org.graylog2.commands.journal.JournalShow 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.commands.journal;
import com.github.rvesse.airline.annotations.Command;
import com.github.rvesse.airline.annotations.Option;
import kafka.log.LogSegment;
import org.graylog2.shared.journal.KafkaJournal;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
@SuppressWarnings("LocalCanBeFinal")
@Command(name = "show", description = "Shows information about the persisted message journal")
public class JournalShow extends AbstractJournalCommand {
@Option(name = {"-s", "--show-segments"}, description = "Show detail information for all segments")
private boolean showSegmentDetails = false;
public JournalShow() {
super("show-journal");
}
@Override
protected void runCommand() {
long sizeInBytes = journal.size();
int numSegments = journal.numberOfSegments();
long committedReadOffset = journal.getCommittedReadOffset();
final StringBuffer sb = new StringBuffer();
final long startOffset = journal.getLogStartOffset();
final long lastOffset = journal.getLogEndOffset() - 1;
sb.append("Graylog message journal in directory: ").append(kafkaJournalConfiguration.getMessageJournalDir().getAbsolutePath()).append(
"\n");
sb.append("\t").append("Total size in bytes: ").append(sizeInBytes).append("\n");
sb.append("\t").append("Number of segments: ").append(numSegments).append("\n");
sb.append("\t").append("Log start offset: ").append(startOffset).append("\n");
sb.append("\t").append("Log end offset: ").append(lastOffset).append("\n");
sb.append("\t").append("Number of messages: ").append(lastOffset - startOffset + 1).append("\n");
sb.append("\t").append("Committed read offset: ");
if (committedReadOffset == Long.MIN_VALUE) {
sb.append("nothing committed");
} else {
sb.append(committedReadOffset);
}
sb.append("\n");
if (showSegmentDetails) {
appendSegmentDetails(journal, sb);
}
sb.append("\n");
System.out.print(sb);
System.out.flush();
}
private void appendSegmentDetails(KafkaJournal journal, StringBuffer sb) {
final Iterable segments = journal.getSegments();
int i = 1;
for (LogSegment segment : segments) {
sb.append("\t\t").append("Segment ").append(i++).append("\n");
sb.append("\t\t\t").append("Base offset: ").append(segment.baseOffset()).append("\n");
sb.append("\t\t\t").append("Size in bytes: ").append(segment.size()).append("\n");
sb.append("\t\t\t").append("Created at: ").append(new DateTime(segment.created(), DateTimeZone.UTC)).append("\n");
sb.append("\t\t\t").append("Last modified: ").append(new DateTime(segment.lastModified(), DateTimeZone.UTC)).append("\n");
}
}
}