I think you don't want to write a 'filter' over the GRPC server code. I think Paul was suggesting that you write your own servlet that manually wraps a generated GRPC client-stub and produces the output that you want. You can then run that code in the same process and connect to a GRPC server using the InProcessServer and InProcessChannel or you can have the client stub talk to a remote server.
i.e you manually emulate what the GRPC-go gateway does to see if that's useful for you On Wed, Aug 24, 2016 at 11:06 AM, <ccl...@dieselpoint.com> wrote: > Could you give me a bit of direction here? I can't make heads or tails of > the internal Grpc server code, nor can I find where I would add a filter to > handle json-over-http calls. > > All I really need is to know where to put some kind of interceptor, > filter, or hook that can examine incoming headers, and if it's a request > for json, deserialize, handle, serialize, and respond. My guess is that it > wouldn't be to tough to add a proxy layer somewhere. A quick example would > save me hours... > > > > On Thursday, August 18, 2016 at 4:51:26 PM UTC-5, Paul Johnston wrote: >> >> Maybe it's possible to use what you have already and use that as the >> reverse-proxy to a yet-to-be-written gRPC service for some of the most >> performance-critical parts of your API, and see if that gRPC offering works >> for you and your customers. Once you discover the patterns you like, you >> could consider writing a protoc plugin that generates code in the REST >> style familiar to your existing codebase. >> >> On Thursday, August 18, 2016 at 10:48:38 AM UTC-6, ccl...@dieselpoint.com >> wrote: >>> >>> Our app has a REST API we've implemented using Jax-RS, Jetty, and >>> Resteasy. >>> >>> I'd like to port the whole thing to gRPC, and offer both a gRPC and a >>> JSON/REST interface to our customers. >>> >>> Our product is not yet released, so I have some flexibility in >>> redesigning the API. But it's going to be necessary to support query >>> parameters in the URL, i.e. GET /hello?foo=bar >>> >>> Is this possible using the Java code? Maybe there's a Netty component >>> for it? >>> >>> (I see that there is a way to do it in Go: >>> https://github.com/grpc-ecosystem/grpc-gateway. Need the same thing in >>> Java.) >>> >>> >>> >> -- > You received this message because you are subscribed to the Google Groups " > grpc.io" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to grpc-io+unsubscr...@googlegroups.com. > To post to this group, send email to grpc-io@googlegroups.com. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/grpc-io/52aad5c7-e10a-4433-b2bb-c07e7a5de355%40googlegroups.com > <https://groups.google.com/d/msgid/grpc-io/52aad5c7-e10a-4433-b2bb-c07e7a5de355%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to grpc-io+unsubscr...@googlegroups.com. To post to this group, send email to grpc-io@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/CADQ0XY1JV%3DXLYuO31kkaBgaJs9-H-vXieSfya5AcnjjMzQ0tCA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
