https://github.com/dominictarr/level-trigger

triggers for levelup
https://github.com/dominictarr/level-trigger

Last synced: 23 days ago
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triggers for levelup

• Host: GitHub
• URL: https://github.com/dominictarr/level-trigger
• Owner: dominictarr
• License: mit
• Created: 2012-12-02T03:09:54.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2015-07-14T17:27:22.000Z (over 9 years ago)
• Last Synced: 2024-10-12T23:07:17.732Z (27 days ago)
• Language: JavaScript
• Homepage:
• Size: 280 KB
• Stars: 33
• Watchers: 3
• Forks: 7
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# level-trigger

Triggers for levelup.



Jobs must be idempotent!

If the process crashes before job has calledback,

it will be rerun the next time it's started, for consistency!

## Stability

Stable: Expect bugfixes.

# Example

``` js

var db       = require('levelup')('/tmp/level-trigger-example')

var SubLevel = require('level-sublevel'); SubLevel(db) //MUST install sublevel.

var Trigger  = require('level-trigger')

var trigDb = Trigger(db, 'example', function (ch) {

    //optionally index the job with a different key.

    //if there are two jobs with the same key,

    //it will only be triggered once.

    return ch.key

  },

  function (value, done) { 

    //call done when job is done.

    done()

  }

})

//if you want, start the trigger in batch mode.

//this will process all the keys in the input db.

//otherwise, jobs will be processed whenever a key is inserted!

if(require('optimist').argv.batch)

  trigDb.start()

```

## License

MIT