Currently, grpcox depends on server reflection to get proto descriptor. It has a
significant drawback, since not every grpc server support
[server
reflection](https://github.com/grpc/grpc/blob/master/doc/server-reflection.md#known-implementations).
Using local proto files is more feasible, as every grpc server certainly have
one.
Even though using protofile should be simple enough, there's still a problem
regarding this. Some protofile use extra plugins for their proto. i.e.
gogoprotobuf is a project that does just that. The problems with plugins are
most of them require explicit import to the plugin inside of the protofile. It
will break grpcurl proto descriptor extraction. Thus, the plugin proto must be
uploaded alongside the protofile. Also, the protofile should be modified
automatically to change their import to local import.
Given that, I proposed a way for the user to upload multiple protofile to
grpcox. Then, use that to get the descriptor.
Changelog:
- Add `use local proto` checkbox in HTML client. On checked it will show upload
button and list of selected proto.
- `get-service` ajax will use POST when `use local proto` is checked. The
uploaded protofile will be the payload for the ajax request.
- Add a new route to handle POST "get-service". It will persist the uploaded
protofile to `/tmp/` directory and add protos field in the resource.
- Modify `openDescriptor` to use local proto if protos field in the resource is
available.
- Modify `openDescriptor` to return an error, as opening descriptor from local
proto may fail.
- Modify the main server so it can be shut down gracefully. This is necessary as
grpcox need to remove persisted proto right after the server is turned off.
This Pull Request will resolve#16
