arpitbbhayani / grpc-in-depth

gRPC in Depth

The repository contains gRPC demonstration and examples to get started with gRPC in Golang. It is part of the YouTube series by Arpit Bhayani.

Please refer the videos in the playlist if you are just getting started with gRPC in Golang.

Setting up the project

Setting up BashRC file

Ensure that your BashRC (~/.bashrc, ~/.zshrc) files sets $GOPATH to something predictable. I have added the following lines to my ~/.bashrc, but feel free to set it to something that you prefer.

$ export $GOPATH=$HOME/go
$ export $PATH=$PATH:$GOPATH/bin

gRPC on Ubuntu

Install the tools to compile proto file into Golang code.

$ sudo apt install -y protobuf-compiler
$ go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest

This installs the plugins and utilities under $GOPATH/bin and the default $GOPATH is $HOME/go.

Ensure that your $GOPATH/bin is in the $PATH variable.

Postman for gRPC

Refer the video, gRPC Requests | Postman Level Up, to setup postman to make client calls to gRPC.

Starting services

Info Service

Info service is a really simple service that exposes one method WhatIsGitHub that upon invocation returns what Github is.

$ cd infosvc
$ protoc \
    --go_out=. \
    --go_opt=paths=source_relative \
    --go-grpc_out=. \
    --go-grpc_opt=paths=source_relative \
    proto/main.proto
$ go run main.go