org.elasticsearch.common.logging.NodeIdConverter Maven / Gradle / Ivy
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/*
* 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 node_id variable into JSON fields node.id .
*
* This is used in `EcsJsonLayout`, which does not use {@link NodeAndClusterIdConverter}.
*/
@Plugin(category = PatternConverter.CATEGORY, name = "NodeIdConverter")
@ConverterKeys({ "node_id" })
public final class NodeIdConverter extends LogEventPatternConverter {
/**
* Called by log4j2 to initialize this converter.
*/
public static NodeIdConverter newInstance(@SuppressWarnings("unused") final String[] options) {
return new NodeIdConverter();
}
public NodeIdConverter() {
super("node_id", "node_id");
}
/**
* Formats the node.id 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().v1());
}
// nodeId/clusterUuid not received yet, not appending
}
}