50 lines
1.3 KiB
JavaScript
50 lines
1.3 KiB
JavaScript
var streams = require('../streams'),
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layouts = require('../layouts'),
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path = require('path'),
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os = require('os'),
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eol = os.EOL || '\n',
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openFiles = [];
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//close open files on process exit.
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process.on('exit', function() {
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openFiles.forEach(function (file) {
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file.end();
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});
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});
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/**
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* File appender that rolls files according to a date pattern.
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* @filename base filename.
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* @pattern the format that will be added to the end of filename when rolling,
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* also used to check when to roll files - defaults to '.yyyy-MM-dd'
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* @layout layout function for log messages - defaults to basicLayout
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*/
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function appender(filename, pattern, layout) {
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layout = layout || layouts.basicLayout;
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var logFile = new streams.DateRollingFileStream(filename, pattern);
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openFiles.push(logFile);
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return function(logEvent) {
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logFile.write(layout(logEvent) + eol, "utf8");
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};
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}
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function configure(config, options) {
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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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}
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if (options && options.cwd && !config.absolute) {
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config.filename = path.join(options.cwd, config.filename);
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}
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return appender(config.filename, config.pattern, layout);
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}
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exports.appender = appender;
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exports.configure = configure;
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