fluent-logger implementation for Node.js inspired by fluent-logger-python.
$ npm install fluent-logger
Fluent daemon should listen on TCP port.
Simple configuration is following:
<source>
@type forward
port 24224
</source>
<match **.*>
@type stdout
</match>
Singleton style
var logger = require('fluent-logger')
// The 2nd argument can be omitted. Here is a default value for options.
logger.configure('tag', {
host: 'localhost',
port: 24224,
timeout: 3.0,
reconnectInterval: 600000 // 10 minutes
});
// send an event record with 'tag.label'
logger.emit('label', {record: 'this is a log'});
Instance style
var logger = require('fluent-logger').createFluentSender('tag', {
host: 'localhost',
port: 24224,
timeout: 3.0,
reconnectInterval: 600000 // 10 minutes
});
The emit method has following signature
.emit([label string], <record object>, [timestamp number/date], [callback function])
Where only the record
argument is required. If the label is set it will be
appended to the configured tag.
Before using [log4js] support, you should install it IN YOUR APPLICATION.
var log4js = require('log4js');
log4js.addAppender(require('fluent-logger').support.log4jsAppender('mytag', {
host: 'localhost',
port: 24224,
timeout: 3.0
}));
var logger = log4js.getLogger('foo');
logger.info('this log record is sent to fluent daemon');
You can add log level after tag automatically.
var log4js = require('log4js');
log4js.addAppender(require('fluent-logger').support.log4jsAppender('mytag', {
host: 'localhost',
port: 24224,
timeout: 3.0,
levelTag: true
}));
var logger = log4js.getLogger('foo');
logger.info('this log record is sent to fluent daemon');
If levelTag
is true
, tag is "mytag.INFO". If levelTag
is false
, tag is "mytag".
You can handle inner events such as 'error' it is raised when fluentd is down.
var log4js = require('log4js');
var appender = require('fluent-logger').support.log4jsAppender('mytag', {
host: 'localhost',
port: 24224,
timeout: 3.0
});
appender.on('error', function(err) {
// Handle err object
console.log(err);
});
log4js.addAppender(appender);
tag
The tag string.
host
The hostname. Default value = 'localhost'.
See socket.connect
port
The port to listen to. Default value = 24224.
See socket.connect
path
The path to your Unix Domain Socket.
If you set path
then fluent-logger ignores host
and port
.
See socket.connect
timeout
Set the socket to timetout after timeout
milliseconds of inactivity
on the socket.
reconnectInterval
Set the reconnect interval in milliseconds. If error occurs then reconnect after this interval.
Apache License, Version 2.0.
This package is compatible with NodeJS versions > 0.10.