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47 lines
1.1 KiB
47 lines
1.1 KiB
# level-post |
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get consistent post hooks for leveldb. |
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](https://travis-ci.org/dominictarr/level-post) |
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[ |
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](http://ci.testling.com/dominictarr/level-post) |
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``` js |
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var level = require('level') |
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var db = level('/tmp/whatever-db') |
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post(db, function (op) { |
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//this is called after every put, del, or batch |
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console.log(op) |
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}) |
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db.put('foo', 'bar', function (err) { |
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//... |
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}) |
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``` |
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# methods |
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## post(db, opts={}, cb) |
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Create a hook to listen for database events matching the constraints in `opts`. |
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`cb(op)` fires for each matching operation for `op`, an object with `type`, |
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`key`, and `value` properties. |
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You can use these keys as constraints, just like level core: |
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* `opts.gte`, `opts.start`, `opts.min` - greater than or equal to |
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* `opts.gt` - greater than |
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* `opts.lte`, `opts.end`, `opts.max` - less than or equal to |
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* `opts.lt` - less than |
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You can also specify a keyEncoding with `opts.keyEncoding`. If there was a |
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keyEncoding set up by leveldb in the constructor (at `db.options.keyEncoding`), |
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that one will be used. |
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## License |
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MIT
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