ceph/src/jaegertracing/thrift/lib/nodejs/lib/thrift/log.js

   1 /*
   2  * Licensed to the Apache Software Foundation (ASF) under one
   3  * or more contributor license agreements. See the NOTICE file
   4  * distributed with this work for additional information
   5  * regarding copyright ownership. The ASF licenses this file
   6  * to you under the Apache License, Version 2.0 (the
   7  * "License"); you may not use this file except in compliance
   8  * with the License. You may obtain a copy of the License at
   9  *
  10  *   http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing,
  13  * software distributed under the License is distributed on an
  14  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  15  * KIND, either express or implied. See the License for the
  16  * specific language governing permissions and limitations
  17  * under the License.
  18  */
  19
  20 var util = require('util');
  21
  22 var disabled = function () {};
  23 var logFunc = console.log;
  24 var logLevel = 'error'; // default level
  25
  26 function factory(level) {
  27   return function () {
  28     // better use spread syntax, but due to compatibility,
  29     // use legacy method here.
  30     var args = ['thrift: [' + level + '] '].concat(Array.from(arguments));
  31     return logFunc(util.format.apply(null, args));
  32   };
  33 }
  34
  35 var trace = disabled;
  36 var debug = disabled;
  37 var error = disabled;
  38 var warning = disabled;
  39 var info = disabled;
  40
  41 exports.setLogFunc = function (func) {
  42   logFunc = func;
  43 };
  44
  45 var setLogLevel = exports.setLogLevel = function (level) {
  46   trace = debug = error = warning = info = disabled;
  47   logLevel = level;
  48   switch (logLevel) {
  49   case 'trace':
  50     trace = factory('TRACE');
  51   case 'debug':
  52     debug = factory('DEBUG');
  53   case 'error':
  54     error = factory('ERROR');
  55   case 'warning':
  56     warning = factory('WARN');
  57   case 'info':
  58     info = factory('INFO');
  59   }
  60 };
  61
  62 // set default
  63 setLogLevel(logLevel);
  64
  65 exports.getLogLevel = function () {
  66   return logLevel;
  67 };
  68
  69 exports.trace = function () {
  70   return trace.apply(null, arguments);
  71 };
  72
  73 exports.debug = function () {
  74   return debug.apply(null, arguments);
  75 };
  76
  77 exports.error = function () {
  78   return error.apply(null, arguments);
  79 };
  80
  81 exports.warning = function () {
  82   return warning.apply(null, arguments);
  83 };
  84
  85 exports.info = function () {
  86   return info.apply(null, arguments);
  87 };