Hi Alexei!
After a bit of fiddling, it works - at least the config & loading the genserver
automatically.
Here’s the config you want to use (i.e. updates to local.ini)
[native_query_servers]
erlang = {couch_native_process, start_link, []}
elixir = {'Elixir.CouchQuery', start_link, []}
check with this:
Π dch@akai couch_plugins-0.1 % pie get
http://localhost:5984/_config/native_query_servers
GET /_config/native_query_servers HTTP/1.1
Accept: application/json
…
Server: CouchDB/1.6.0+build.bae0b27 (Erlang OTP/R16B02)
{
"elixir": "{'Elixir.CouchQuery', start_link, []}",
"erlang": "{couch_native_process, start_link, []}"
}
And if you try to build a temp view with type elixir using futon then the
genserver is correctly started for you - yay!
For the moment I put your files here:
Π dch@akai couch_elixir-0.1 % pwd
$COUCHDB/lib/couchdb/erlang/lib/couch_elixir-0.1
Π dch@akai couch_elixir-0.1 % elixirc -o ebin --verbose lib/couchquery.ex
Compiled lib/couchquery.ex
Π dch@akai couch_elixir-0.1 % tree
.
├── ebin/
│ └── Elixir.CouchQuery.beam
└── lib/
└── couchquery.ex
But any dir under $COUCH/lib/couchdb/erlang/lib/something-0.123
should work fine I think. I guess we could make this a plugin of sorts.
I’d suggest adding elixir in here too somehow, maybe also as a plugin?
└── lib/
├── eex/
│ └── ebin/
│ ├── Elixir.EEx.AssignsEngine.beam
│ ├── Elixir.EEx.Compiler.beam
│ ├── Elixir.EEx.Engine.beam
│ ├── Elixir.EEx.SmartEngine.beam
│ ├── Elixir.EEx.State.beam
│ ├── Elixir.EEx.SyntaxError.beam
│ ├── Elixir.EEx.Tokenizer.beam
│ ├── Elixir.EEx.TransformerEngine.beam
│ ├── Elixir.EEx.beam
│ └── eex.app
├── elixir/
│ └── ebin/
│ ├── Elixir.Access.Atom.beam
│ ├── Elixir.Access.HashDict.beam
│ ├── Elixir.Access.List.beam
│ ├── Elixir.Access.beam
│ ├── Elixir.Application.Behaviour.beam
│ ├── Elixir.ArgumentError.beam
│ ├── Elixir.ArithmeticError.beam
… etc.
so you should have the full elixir runtime available.
If you look inside ./couchdb[1] you can probably turn it into
an iex shell directly too.
And read closely couch_native_process.erl[2] which you’ll want to re-use a lot
of, most likely.
I’ve not read plugins in detail yet, [3][4] but I’m keen to see what you come
up with!
[1]: https://github.com/apache/couchdb/blob/master/bin/couchdb.tpl.in
[2]:
https://github.com/apache/couchdb/blob/master/src/couchdb/couch_native_process.erl
[3]: https://github.com/apache/couchdb/tree/master/src/my-first-couchdb-plugin
[4]: http://docs.couchdb.org/en/latest/experimental.html#plugins
A+
Dave
