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@ -48,8 +48,32 @@ function gelfAppender (layout, host, port, hostname, facility) {
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if (client) client.close();
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});
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/**
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* Add custom fields (start with underscore )
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* - if the first object passed to the logger contains 'GELF' field, add copy the underscore fields to the message
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* @param loggingEvent
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* @param msg
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*/
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function addCustomFields(loggingEvent, msg){
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var data = loggingEvent.data;
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if (!Array.isArray(data) || data.length === 0) return;
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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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var keys = Object.keys(firstData);
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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] = firstData[key];
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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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//console.log(msg);
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}
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function preparePacket(loggingEvent) {
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var msg = {};
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addCustomFields(loggingEvent, msg);
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msg.full_message = layout(loggingEvent);
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msg.short_message = msg.full_message;
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