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changes-feed's Introduction

changes-feed

Basic changes-feed implementation that runs on top of leveldb

npm install changes-feed

build status

Usage

var changes = require('changes-feed')
var feed = changes(db) // db is a levelup

feed.createReadStream({live:true})
  .on('data', function(data) {
    console.log('someone appended:', data)
  })

feed.append('hello')

API

feed.append(value)

Append a new value to the changes feed. The value should be a string or buffer

stream = feed.createReadStream([options])

Stream out entries from the log. Per default this will stream out all entries. Options include:

{
  live: true,   // keep the stream open,
  since: number // only get changes >number
}

A stream data object looks like this

{
  change: number, // incrementing change number
  value: value    // the value appended
}

License

MIT

changes-feed's People

Contributors

mafintosh avatar vespakoen avatar mvayngrib avatar

Stargazers

Mohammad Sadegh Khoeini avatar Fabien Bourgeois avatar avatar Jeremy avatar Cat avatar avatar RYeah Sh avatar Roger Berg Falk avatar avatar avatar Angus H. avatar yunsong avatar Mikey avatar Athan avatar Yosh avatar PatrickJS avatar Seth Vincent avatar Jon Schlinkert avatar dap avatar Charlike Mike Reagent avatar Asbjorn Enge avatar Sven Lito avatar Rory Bradford avatar jiangplus avatar Eirik L. Vullum avatar Jarrett Cruger avatar Ben McMahen avatar avatar

Watchers

avatar avatar James Cloos avatar avatar

Forkers

mvayngrib vespakoen tradle

changes-feed's Issues

[Request] since: 'now'

Hey!

First of all, thanks for this package!

I think it would be nice if there would be a since: 'now' option.
I am guessing that for that to work, the createReadStream method has to ensureCount first and so it should hold back sending values until it knows what the count is.

I am not sure if that is even possible?

As an alternative, I think that exposing a method that allows me to get the count would suffice as well.

Besides that I am totally approving @mvayngrib's pull requests.

Thanks and let me know if I can help!

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