1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
/*! Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */
/**
* Icinga.Logger
*
* Well, log output. Rocket science.
*/
(function (Icinga) {
'use strict';
Icinga.Logger = function (icinga) {
this.icinga = icinga;
this.logLevel = 'info';
this.logLevels = {
'debug': 0,
'info' : 1,
'warn' : 2,
'error': 3
};
};
Icinga.Logger.prototype = {
/**
* Whether the browser has a console object
*/
hasConsole: function () {
return 'undefined' !== typeof console;
},
/**
* Raise or lower current log level
*
* Messages below this threshold will be silently discarded
*/
setLevel: function (level) {
if ('undefined' !== typeof this.numericLevel(level)) {
this.logLevel = level;
}
return this;
},
/**
* Log a debug message
*/
debug: function () {
return this.writeToConsole('debug', arguments);
},
/**
* Log an informational message
*/
info: function () {
return this.writeToConsole('info', arguments);
},
/**
* Log a warning message
*/
warn: function () {
return this.writeToConsole('warn', arguments);
},
/**
* Log an error message
*/
error: function () {
return this.writeToConsole('error', arguments);
},
/**
* Write a log message with the given level to the console
*/
writeToConsole: function (level, args) {
args = Array.prototype.slice.call(args);
// We want our log messages to carry precise timestamps
args.unshift(this.icinga.utils.timeWithMs());
if (this.hasConsole() && this.hasLogLevel(level)) {
if (typeof console[level] !== 'undefined') {
if (typeof console[level].apply === 'function') {
console[level].apply(console, args);
} else {
args.unshift('[' + level + ']');
console[level](args.join(' '));
}
} else if ('undefined' !== typeof console.log) {
args.unshift('[' + level + ']');
console.log(args.join(' '));
}
}
return this;
},
/**
* Return the numeric identifier for a given log level
*/
numericLevel: function (level) {
var ret = this.logLevels[level];
if ('undefined' === typeof ret) {
throw 'Got invalid log level ' + level;
}
return ret;
},
/**
* Whether a given log level exists
*/
hasLogLevel: function (level) {
return this.numericLevel(level) >= this.numericLevel(this.logLevel);
},
/**
* There isn't much to clean up here
*/
destroy: function () {
this.enabled = false;
this.icinga = null;
}
};
}(Icinga));
|
