lunch-n-learn

Lunch & Learn - Golang

The presentation slides are here:

Lunch & Learn - Golang - An Intro to Go & gRPC

Workshop

Let's build a food ordering API.

Project is composed of a simple http API gateway service, communicating via gRPC (client), with a backend microservice (server).

Run the apps

Open 1st terminal window:

cd client/ && go run main.go

Open 2nd terminal window:

cd server/ && go run main.go

See it in action

Visit this urls in a web browser:

Successfully order: 'fish':

http://localhost:8080/new_order/fish

Experiment with different errors:

Fail to order: 'pasta':

http://localhost:8080/new_order/pasta

Fail to order: 'pizza':

http://localhost:8080/new_order/pizza

Use invalid parameter: 'car':

http://localhost:8080/new_order/car

Development

Update libs:

go get -v ./... && go mod vendor && go mod tidy

Regenerate protobuf file(s):

protoc --go_out=proto --go-grpc_out=proto ./proto/lunchnlearn/*.proto && \
mv proto/github.com/rubyconvict/lunchnlearn/proto/lunchnlearn/*.pb.* proto/lunchnlearn/ && \
rm -rf proto/github.com

rubyconvict / lunchnlearn