GELF appender can add customFields to config for every message
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@ -34,13 +34,16 @@ levelMapping[levels.FATAL] = LOG_CRIT;
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* @param hostname - hostname of the current host (default:os hostname)
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* @param hostname - hostname of the current host (default:os hostname)
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* @param facility - facility to log to (default:nodejs-server)
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* @param facility - facility to log to (default:nodejs-server)
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*/
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*/
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function gelfAppender (layout, host, port, hostname, facility) {
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function gelfAppender (layout, host, port, hostname, facility, customFields) {
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host = host || 'localhost';
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host = host || 'localhost';
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port = port || 12201;
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port = port || 12201;
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hostname = hostname || require('os').hostname();
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hostname = hostname || require('os').hostname();
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facility = facility || 'nodejs-server';
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facility = facility || 'nodejs-server';
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layout = layout || layouts.messagePassThroughLayout;
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layout = layout || layouts.messagePassThroughLayout;
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var defaultCustomFields = customFields || {};
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console.log(defaultCustomFields)
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var client = dgram.createSocket("udp4");
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var client = dgram.createSocket("udp4");
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@ -55,9 +58,22 @@ function gelfAppender (layout, host, port, hostname, facility) {
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* @param msg
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* @param msg
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*/
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*/
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function addCustomFields(loggingEvent, msg){
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function addCustomFields(loggingEvent, msg){
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/* append defaultCustomFields firsts */
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var keys = Object.keys(defaultCustomFields);
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for (var i in keys){
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var key = keys[i];
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// skip _id field for graylog2, skip keys not starts with UNDERSCORE
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if (!key.match(/^_/) || key === "_id") continue;
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msg[key] = defaultCustomFields[key];
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}
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/* append custom fields per message */
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var data = loggingEvent.data;
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var data = loggingEvent.data;
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if (!Array.isArray(data) || data.length === 0) return;
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if (!Array.isArray(data) || data.length === 0) return;
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var firstData = data[0];
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var firstData = data[0];
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if (!firstData['GELF']) return; // identify with GELF field defined
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if (!firstData['GELF']) return; // identify with GELF field defined
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var keys = Object.keys(firstData);
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var keys = Object.keys(firstData);
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for (var i in keys){
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for (var i in keys){
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@ -66,9 +82,9 @@ function gelfAppender (layout, host, port, hostname, facility) {
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if (!key.match(/^_/) || key === "_id") continue;
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if (!key.match(/^_/) || key === "_id") continue;
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msg[key] = firstData[key];
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msg[key] = firstData[key];
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}
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}
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loggingEvent.data.shift(); // remove the first object
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//console.log('=== msg ===');
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/* the custom field object should be removed, so it will not be looged by the later appenders */
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//console.log(msg);
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loggingEvent.data.shift();
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}
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}
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function preparePacket(loggingEvent) {
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function preparePacket(loggingEvent) {
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@ -112,7 +128,7 @@ function configure(config) {
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if (config.layout) {
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if (config.layout) {
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layout = layouts.layout(config.layout.type, config.layout);
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layout = layouts.layout(config.layout.type, config.layout);
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}
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}
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return gelfAppender(layout, config.host, config.port, config.hostname, config.facility);
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return gelfAppender(layout, config.host, config.port, config.hostname, config.facility, config.customFields);
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}
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}
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exports.appender = gelfAppender;
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exports.appender = gelfAppender;
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