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
|
"use strict";
var streams = require('../streams')
, layouts = require('../layouts')
, path = require('path')
, os = require('os')
, eol = os.EOL || '\n'
, openFiles = [];
//close open files on process exit.
process.on('exit', function() {
openFiles.forEach(function (file) {
file.end();
});
});
/**
* File appender that rolls files according to a date pattern.
* @filename base filename.
* @pattern the format that will be added to the end of filename when rolling,
* also used to check when to roll files - defaults to '.yyyy-MM-dd'
* @layout layout function for log messages - defaults to basicLayout
* @timezoneOffset optional timezone offset in minutes - defaults to system local
*/
function appender(filename, pattern, alwaysIncludePattern, layout, timezoneOffset) {
layout = layout || layouts.basicLayout;
var logFile = new streams.DateRollingFileStream(
filename,
pattern,
{ alwaysIncludePattern: alwaysIncludePattern }
);
openFiles.push(logFile);
return function(logEvent) {
logFile.write(layout(logEvent, timezoneOffset) + eol, "utf8");
};
}
function configure(config, options) {
var layout;
if (config.layout) {
layout = layouts.layout(config.layout.type, config.layout);
}
if (!config.alwaysIncludePattern) {
config.alwaysIncludePattern = false;
}
if (options && options.cwd && !config.absolute) {
config.filename = path.join(options.cwd, config.filename);
}
return appender(
config.filename,
config.pattern,
config.alwaysIncludePattern,
layout,
config.timezoneOffset
);
}
function shutdown(cb) {
var completed = 0;
var error;
var complete = function(err) {
error = error || err;
completed++;
if (completed >= openFiles.length) {
cb(error);
}
};
if (!openFiles.length) {
return cb();
}
openFiles.forEach(function(file) {
if (!file.write(eol, "utf-8")) {
file.once('drain', function() {
file.end(complete);
});
} else {
file.end(complete);
}
});
}
exports.appender = appender;
exports.configure = configure;
exports.shutdown = shutdown;
|
