org.elasticsearch.common.logging.ClusterIdConverter Maven / Gradle / Ivy
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.common.logging;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.pattern.ConverterKeys;
import org.apache.logging.log4j.core.pattern.LogEventPatternConverter;
import org.apache.logging.log4j.core.pattern.PatternConverter;
/**
* Pattern converter to format the cluster_id variable into JSON fields cluster.id.
*
* This is used in `EcsJsonLayout`, which does not use {@link NodeAndClusterIdConverter}.
*/
@Plugin(category = PatternConverter.CATEGORY, name = "ClusterIdConverter")
@ConverterKeys({"cluster_id"})
public final class ClusterIdConverter extends LogEventPatternConverter {
/**
* Called by log4j2 to initialize this converter.
*/
public static ClusterIdConverter newInstance(@SuppressWarnings("unused") final String[] options) {
return new ClusterIdConverter();
}
public ClusterIdConverter() {
super("cluster_id", "cluster_id");
}
/**
* Formats the cluster.uuid into json fields.
*
* @param event - a log event is ignored in this method as it uses the clusterId value
* from NodeAndClusterIdStateListener to format
*/
@Override
public void format(LogEvent event, StringBuilder toAppendTo) {
if (NodeAndClusterIdStateListener.nodeAndClusterId.get() != null) {
toAppendTo.append(NodeAndClusterIdStateListener.nodeAndClusterId.get().v2());
}
// nodeId/clusterUuid not received yet, not appending
}
}