/* automatically generated by JSCoverage - do not edit */
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}
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"use strict";
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var zlib = require("zlib");
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var layouts = require("../layouts");
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var levels = require("../levels");
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var dgram = require("dgram");
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var util = require("util");
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var debug = require("../debug")("GELF Appender");
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var LOG_EMERG = 0;
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var LOG_ALERT = 1;
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var LOG_CRIT = 2;
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var LOG_ERR = 3;
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var LOG_ERROR = 3;
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var LOG_WARNING = 4;
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var LOG_NOTICE = 5;
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var LOG_INFO = 6;
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var LOG_DEBUG = 7;
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var levelMapping = {};
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levelMapping[levels.ALL] = LOG_DEBUG;
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levelMapping[levels.TRACE] = LOG_DEBUG;
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levelMapping[levels.DEBUG] = LOG_DEBUG;
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levelMapping[levels.INFO] = LOG_INFO;
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levelMapping[levels.WARN] = LOG_WARNING;
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levelMapping[levels.ERROR] = LOG_ERR;
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levelMapping[levels.FATAL] = LOG_CRIT;
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function gelfAppender(layout, host, port, hostname, facility) {
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  var config, customFields;
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  if (typeof host === "object") {
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    config = host;
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    host = config.host;
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    port = config.port;
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    hostname = config.hostname;
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    facility = config.facility;
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    customFields = config.customFields;
  }
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  host = host || "localhost";
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  port = port || 12201;
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  hostname = hostname || require("os").hostname();
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  facility = facility || "nodejs-server";
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  layout = layout || layouts.messagePassThroughLayout;
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  var defaultCustomFields = customFields || {};
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  var client = dgram.createSocket("udp4");
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  process.on("exit", (function () {
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  if (client) {
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    client.close();
  }
}));
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  function addCustomFields(loggingEvent, msg) {
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    Object.keys(defaultCustomFields).forEach((function (key) {
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  if (key.match(/^_/) && key !== "_id") {
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    msg[key] = defaultCustomFields[key];
  }
}));
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    var data = loggingEvent.data;
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    if (! Array.isArray(data) || data.length === 0) {
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      return;
    }
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    var firstData = data[0];
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    if (! firstData.GELF) {
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      return;
    }
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    Object.keys(firstData).forEach((function (key) {
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  if (key.match(/^_/) || key !== "_id") {
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    msg[key] = firstData[key];
  }
}));
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    loggingEvent.data.shift();
}
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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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    msg.version = "1.0";
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    msg.timestamp = msg.timestamp || new Date().getTime() / 1000 >> 0;
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    msg.host = hostname;
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    msg.level = levelMapping[loggingEvent.level || levels.DEBUG];
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    msg.facility = facility;
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    return msg;
}
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  function sendPacket(packet) {
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    try {
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      client.send(packet, 0, packet.length, port, host);
    }
    catch (e) {
    }
}
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  return (function (loggingEvent) {
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  var message = preparePacket(loggingEvent);
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  zlib.gzip(new Buffer(JSON.stringify(message)), (function (err, packet) {
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  if (err) {
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    console.error(err.stack);
  }
  else {
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    if (packet.length > 8192) {
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      debug("Message packet length (" + packet.length + ") is larger than 8k. Not sending");
    }
    else {
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      sendPacket(packet);
    }
  }
}));
});
}
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function configure(config) {
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  var layout;
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  if (config.layout) {
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    layout = layouts.layout(config.layout.type, config.layout);
  }
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  return gelfAppender(layout, config);
}
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exports.appender = gelfAppender;
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exports.configure = configure;
_$jscoverage['appenders/gelf.js'].source = ["\"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;"];