plugins v2 (sectioned db, with hooks) about community HOT 1 OPEN

I've been using sublevel and have come around to the approach for extending levelup, but it's still not quite enough, what I really want is something between hooks and the approach I outlined in #97. Perhaps hooks can be adapted though.

So, what I really want is to be able to intercept calls in the middle of the original LevelUP method. Lets say I want to intercept all put() calls and write some special entries based on the key and/or value (in a sublevel). But, there's a couple of barriers: if I monkey-patch then I have to deal with the optional arguments bit and also the encoding. Say I want to take the key and use it to insert some other key into a sublevel based on it and also based on something special in the options that may or may not have been passed to the method. First I have to do the same thing that LevelUP already does to find the options argument and decode it (e.g. it could just be a string which would be turned in to 'valueEncoding'). Then I have to encode the key, perhaps they are doing JSON encoding on keys, I'll need to do the same thing in order to have enough information to proceed. After all that I need to make sure I pass the originals back to LevelUP.

I don't believe level-hooks does enough of this to help, perhaps it can be adapted to do so? What I want is something like what the externr code was doing by giving me an injection point right in the middle of the method where I can have the encoded key and value and even the internal options object.

How can we have it all?

from community.