go-grpc

Go gRPC Sample

Example gRPC server implemented in Go

Deploying the Go app

Deploy the app using the manifest file

Deploy the app

export DOMAIN=my.cf.app.domain
cf push -f app-manifest.yml --var domain=$DOMAIN

Deploy the app without the manifest file

cf push --no-route go-grpc-test --buildpack go_buildpack 
# my.cf.app.domain is used as an example for demonstration purpose
cf map-route go-grpc-test my.cf.app.domain --hostname go-grpc-test --app-protocol http2

Testing the Go app

grpcurl needs to be installed separately.

grpcurl go-grpc-test.my.cf.app.domain:443 example.Example.Run 

Building and running on the local machine

1. go build
2. PORT=8080 ./go-grpc
3. grpcurl -vv -plaintext localhost:8080 example.Example.Run

grpcurl needs to be installed separately.

Renerating code

The generated code is created using the Protoc compiler, which needs to be installed separately.

The following steps can then be used to re-generate the gRPC files in example/.

go get -u google.golang.org/protobuf/cmd/protoc-gen-go
go get -u google.golang.org/grpc/cmd/protoc-gen-go-grpc
protoc --go_out=$PWD example.proto
protoc --go-grpc_out=$PWD example.proto