0.3.0 • Published 10 years ago
async-logging v0.3.0
async-logging-node
This module is trying to solve the discrepancy between the async model & the common synchronous logging model
- Logging types: heartbeat, atomic, transaction
- Logging params: type, level, msg, uuid, event, parent
- Transaction: this is the key structure we're trying to restore from async events model
- Logging proxy: part of this module builds a proxy service which is a websocket server accepting log payload as message pack
- Logging client: the other part is a client which runs in the application runtime, connecting to websocket, and transferring the log event over
- MonApp: optional monitoring app which can generate heartbeat logs
API
Function | Description |
---|---|
LogCluster | |
require('log-cluster').LogCluster | importing constructor |
new LogCluster(options, emitter) | constructor accepts two parameters; |
LogBuffer | |
require('log-buffer').LogBuffer | importing constructor |
new LogBuffer(emitter,mapper) | constructor accepts two parameters, emitter which emits 'log' events and optional mapper which can map log properties to correct format |
LogListener | |
require('log-listener').LogListener | importing constructor |
Installation
npm install async-logging
Usage
Start a proxy service
var LogCluster = require("log-cluster.js").LogCluster,
CalPublisher = require("cal-publisher.js").CalPublisher;
new LogCluster({LogPublisher:CalPublisher});
Provide a Log Publisher
var CalPublisher = exports.CalPublisher = function(emitter, calMapper, calSender, calCallback){
//a specific publisher, could be as simple as log file appender
}
Start a client
new require("log-client").LogClient({url:""}); //url must be given
Example
Look at lib/log-server.js. You can start it by typing following commands from the root of the project
npm install
node lib/log-server.js
LogCluster constructor options
port
: port on which the cluster will run(default 3000)monPort
: port of the monitoring app if any(default 3001)cluster
: (default true)noWorders
number of worker processes to create:connThreshold
: max number of connections to accept(default 1024)ecv
:heartbeatInterval
:LogListener
: defaults to 'log-listen.js'LogBuffer
: defaults to 'log-buffer.js'LogPublisher
: defautls to 'winston-publisher.js'
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