npm install samplerA library which record things and play them back
Record byte streams/events (eg. twitter, music, IRC, Apache logs..) and play them back (eg. to test or debug an app, reproduce errors, simulate events)
One the of main features is that you can control the rate speed,
very useful to train machine learning algorithms on historic data (eg. Twitter streams)
This library is still in development so expect heavy refactoring and sparse documentation until I have more time to settle everything.
* real support of stream/buffer API
* insertion of event at arbitrary timesteps (eg. when working with incomplete time-series)
* reverse playback!
BSD
#### Install it as a dependency for your project
$ npm install sampler
#### Install it globally in your system
$ npm install sampler -g
#### Run the tests
$ npm run-script test
To install node-sampler in a development setup:
$ git clone http://github.com/daizoru/node-sampler.git
$ cd node-sampler
$ npm link
$ # optional:
$ # npm run-script test
To build the coffee-script:
$ npm run-script build
`` coffeescriptmyapp.coffee
Sampler = require 'sampler'
sample = new Sampler()
sample.on 'event', (event) -> log "#{event.timestamp}: #{event.data}"
delay 2000, ->
log "playing events back.."
sample.play()
delay 5000, ->
log "playing events back. and faster."
sample.play 5.0 # 2.0x
`
which should output something like:
`
10 Jun 14:57:49 - sampling events..
10 Jun 14:57:51 - playing events back..
10 Jun 14:57:51 - 1339333069383: { companyhelpdesk: 'hi how can I help you' }
10 Jun 14:57:51 - 1339333069783: { facebook: 'wow! this was a big earthquake' }
10 Jun 14:57:52 - 1339333070284: { twitter: 'just saw my dead neighbor walking in my street. It\'s weird. wait I\'m gonna check it out' }
10 Jun 14:57:52 - 1339333070784: { twitter: 'ZOMBIE APOCALYPSE!!1!!' }
10 Jun 14:57:54 - playing events back. and faster.
10 Jun 14:57:54 - 1339333069383: { companyhelpdesk: 'hi how can I help you' }
10 Jun 14:57:54 - 1339333069783: { facebook: 'wow! this was a big earthquake' }
10 Jun 14:57:54 - 1339333070284: { twitter: 'just saw my dead neighbor walking in my street. It\'s weird. wait I\'m gonna check it out' }
10 Jun 14:57:54 - 1339333070784: { twitter: 'ZOMBIE APOCALYPSE!!1!!' }
``
You can see it here but the second batch is two times faster