moved gelf appender to log4js-gelf

lib/appenders/gelf.js

@@ -1,141 +0,0 @@
-"use strict";
-var zlib = require('zlib');
-var layouts = require('../layouts');
-var levels = require('../levels');
-var dgram = require('dgram');
-var util = require('util');
-var debug = require('../debug')('GELF Appender');
-
-var LOG_EMERG=0;    // system is unusable
-var LOG_ALERT=1;    // action must be taken immediately
-var LOG_CRIT=2;     // critical conditions
-var LOG_ERR=3;      // error conditions
-var LOG_ERROR=3;    // because people WILL typo
-var LOG_WARNING=4;  // warning conditions
-var LOG_NOTICE=5;   // normal, but significant, condition
-var LOG_INFO=6;     // informational message
-var LOG_DEBUG=7;    // debug-level message
-
-var levelMapping = {};
-levelMapping[levels.ALL] = LOG_DEBUG;
-levelMapping[levels.TRACE] = LOG_DEBUG;
-levelMapping[levels.DEBUG] = LOG_DEBUG;
-levelMapping[levels.INFO] = LOG_INFO;
-levelMapping[levels.WARN] = LOG_WARNING;
-levelMapping[levels.ERROR] = LOG_ERR;
-levelMapping[levels.FATAL] = LOG_CRIT;
-
-/**
- * GELF appender that supports sending UDP packets to a GELF compatible server such as Graylog
- *
- * @param layout a function that takes a logevent and returns a string (defaults to none).
- * @param host - host to which to send logs (default:localhost)
- * @param port - port at which to send logs to (default:12201)
- * @param hostname - hostname of the current host (default:os hostname)
- * @param facility - facility to log to (default:nodejs-server)
- */
-function gelfAppender (layout, host, port, hostname, facility) {
-  var config, customFields;
-  if (typeof(host) === 'object') {
-    config = host;
-    host = config.host;
-    port = config.port;
-    hostname = config.hostname;
-    facility = config.facility;
-    customFields = config.customFields;
-  }
-  
-  host = host || 'localhost';
-  port = port || 12201;
-  hostname = hostname || require('os').hostname();
-  facility = facility || 'nodejs-server';
-  layout = layout || layouts.messagePassThroughLayout;
-
-  var defaultCustomFields = customFields || {};
-  
-  var client = dgram.createSocket("udp4");
-  
-  process.on('exit', function() {
-    if (client) client.close();
-  });
-
-  /**
-   * Add custom fields (start with underscore ) 
-   * - if the first object passed to the logger contains 'GELF' field, 
-   *   copy the underscore fields to the message
-   * @param loggingEvent
-   * @param msg
-   */
-  function addCustomFields(loggingEvent, msg){
-
-    /* append defaultCustomFields firsts */
-    Object.keys(defaultCustomFields).forEach(function(key) {
-      // skip _id field for graylog2, skip keys not starts with UNDERSCORE
-      if (key.match(/^_/) && key !== "_id") { 
-        msg[key] = defaultCustomFields[key];
-      }
-    });
-
-    /* append custom fields per message */
-    var data = loggingEvent.data;
-    if (!Array.isArray(data) || data.length === 0) return;
-    var firstData = data[0];
-    
-    if (!firstData.GELF) return; // identify with GELF field defined
-    Object.keys(firstData).forEach(function(key) {
-      // skip _id field for graylog2, skip keys not starts with UNDERSCORE
-      if (key.match(/^_/) || key !== "_id") { 
-        msg[key] = firstData[key];
-      }
-    });
-    
-    /* the custom field object should be removed, so it will not be looged by the later appenders */
-    loggingEvent.data.shift(); 
-  }
- 
-  function preparePacket(loggingEvent) {
-    var msg = {};
-    addCustomFields(loggingEvent, msg);
-    msg.full_message = layout(loggingEvent);
-    msg.short_message = msg.full_message;
-    
-    msg.version="1.0";
-    msg.timestamp = msg.timestamp || new Date().getTime() / 1000 >> 0;
-    msg.host = hostname;
-    msg.level = levelMapping[loggingEvent.level || levels.DEBUG];
-    msg.facility = facility;
-    return msg;
-  }
-  
-  function sendPacket(packet) {
-    try {
-      client.send(packet, 0, packet.length, port, host);
-    } catch(e) {}
-  }
-
-  return function(loggingEvent) {
-    var message = preparePacket(loggingEvent);
-    zlib.gzip(new Buffer(JSON.stringify(message)), function(err, packet) {
-      if (err) {
-        console.error(err.stack);
-      } else {
-        if (packet.length > 8192) {
-          debug("Message packet length (" + packet.length + ") is larger than 8k. Not sending");
-        } else {
-          sendPacket(packet);
-        }
-      }
-    });
-  };
-}
-
-function configure(config) {
-  var layout;
-  if (config.layout) {
-    layout = layouts.layout(config.layout.type, config.layout);
-  }
-  return gelfAppender(layout, config);
-}
-
-exports.appender = gelfAppender;
-exports.configure = configure;