{ "slug": "Hello-world-in-go-micro-as-the-base-of-GoLang-in-a-microservice-architecture-5f6fa75af724", "title": "Hello world in go-micro as the base of GoLang in a microservice architecture", "subtitle": "What is Go Micro?", "excerpt": "What is Go Micro?", "date": "2023-05-24", "tags": [ "Go", "Microservices", "Architecture" ], "readingTime": "3 min", "url": "https://medium.com/@mobinshaterian/hello-world-in-go-micro-as-the-base-of-golang-in-a-microservice-architecture-5f6fa75af724", "hero": "https://cdn-images-1.medium.com/max/800/1*WgbtBRJClMV9kR4fRJY86g.png", "content": [ { "type": "heading", "level": 2, "text": "What is Go Micro?" }, { "type": "paragraph", "html": "“Go Micro is a pluggable RPC based library which provides the fundamental building blocks for writing microservices in Go. The Micro philosophy is “batteries included” with a pluggable architecture. Out of the box, it implements service discovery using consul, communication via http and encoding using proto-rpc or json-rpc.” @asimaslam" }, { "type": "paragraph", "html": "In this article, I want to install and go-micro from the beginning to make my extensive application." }, { "type": "paragraph", "html": "The best and easiest way to install Golang is following a formal tutorial. Another way is using snap to install Golang on your ubuntu device." }, { "type": "code", "lang": "text", "code": "cdmkdir gocd gomkdir src" }, { "type": "code", "lang": "javascript", "code": "export PATH=$PATH:/usr/local/go/binexport PATH=$PATH:$(go env GOPATH)/binexport GOPATH=$(go env\nGOPATH)" }, { "type": "code", "lang": "bash", "code": "cd ~cat .bashrc# Set the GOPROXY environment variableexport GOPROXY=https://goproxy.io,direct# Set\nenvironment variable allow bypassing the proxy for specified repos (optional)export\nGOPRIVATE=git.mycompany.com,github.com/my/privateexport PATH=\"$PATH:$HOME/.local/bin\"export\nPATH=\"$PATH:$(go env GOPATH)/bin\"export GOPATH=$(go env GOPATH)cat .profileexport\nPATH=$PATH:/usr/local/go/bin" }, { "type": "paragraph", "html": "Install Protoc" }, { "type": "code", "lang": "text", "code": "Run: vim ~/.bash_profile Add:export GO_PATH=~/goexport PATH=$PATH:/$GO_PATH/binRun:source\n~/.bash_profile" }, { "type": "heading", "level": 2, "text": "Go-micro repository address" }, { "type": "heading", "level": 2, "text": "Go-micro Demo" }, { "type": "heading", "level": 2, "text": "Go-micro CLI" }, { "type": "heading", "level": 2, "text": "Go-micro Dashboard" }, { "type": "heading", "level": 2, "text": "Let’s start with Go-micro CLI" }, { "type": "code", "lang": "bash", "code": "go install github.com/go-micro/cli/cmd/go-micro@latest" }, { "type": "paragraph", "html": "Generte microservice by command. This work is so beatiful that I can make it easily without any problem to copy hidden files." }, { "type": "code", "lang": "bash", "code": "go-micro new service helloworld\ncd helloworld\nmake init proto update tidy" }, { "type": "code", "lang": "bash", "code": "cd helloworldmake proto tidygo-micro run" }, { "type": "paragraph", "html": "Send Request with GRPC" }, { "type": "code", "lang": "bash", "code": "go-micro call helloworld Helloworld.Call '{\"name\": \"John\"}'" }, { "type": "image", "src": "https://cdn-images-1.medium.com/max/800/1*WgbtBRJClMV9kR4fRJY86g.png", "alt": "folder that make with CLI command", "caption": "folder that make with CLI command", "width": 284, "height": 341 }, { "type": "paragraph", "html": "It is so easy to change helloworld.proto and then build" }, { "type": "code", "lang": "bash", "code": "make proto" }, { "type": "paragraph", "html": "Go-micro also has a refresh mode. It means that when you change a file, Go-micro will automatically build the project." }, { "type": "paragraph", "html": "main.go file of project will be like this." }, { "type": "code", "lang": "go", "code": "func main() {\n // Create service srv := micro.NewService() srv.Init(micro.Name(service),\n micro.Version(version),)" }, { "type": "code", "lang": "go", "code": "// Register handler if err := pb.RegisterHelloworldHandler(srv.Server(), new(handler.Helloworld));\nerr != nil { logger.Fatal(err) } // Run service if err := srv.Run(); err != nil {\nlogger.Fatal(err) }}" }, { "type": "heading", "level": 2, "text": "execute go-micro" }, { "type": "code", "lang": "bash", "code": "go-micro run" }, { "type": "heading", "level": 2, "text": "Jaeger" }, { "type": "code", "lang": "bash", "code": "go-micro new service --jaeger helloworld" }, { "type": "paragraph", "html": "handler/helloworld.go" }, { "type": "code", "lang": "go", "code": "package helloworld" }, { "type": "code", "lang": "go", "code": "import (\n\"context\"" }, { "type": "code", "lang": "text", "code": "\"go-micro.dev/v4/logger\"" }, { "type": "code", "lang": "text", "code": "\"helloworld/greeter\" pb \"helloworld/proto\")" }, { "type": "code", "lang": "go", "code": "type Helloworld struct{\n}" }, { "type": "code", "lang": "go", "code": "func (e *Helloworld) Call(ctx context.Context, req pb.CallRequest, rsp *pb.CallResponse) error {\n logger.Infof(\"Received Helloworld.Call request: %v\", req)\n rsp.Msg = greeter.Greet(ctx, req.Name)\n return nil\n}" }, { "type": "paragraph", "html": "greeter/greeter.go" }, { "type": "code", "lang": "go", "code": "package greeter" }, { "type": "code", "lang": "go", "code": "import (\n\"context\"\n\"fmt\"" }, { "type": "code", "lang": "text", "code": "\"go-micro.dev/v4/cmd/micro/debug/trace\")" }, { "type": "code", "lang": "go", "code": "func Greet(ctx context.Context, name string) string {\n defer trace.NewSpan(ctx).Finish()\n return fmt.Sprint(\"Hello \" + name)\n}" }, { "type": "heading", "level": 2, "text": "I want to add jaeger to the go-micro project" }, { "type": "code", "lang": "bash", "code": "go-micro new service --jaeger helloworld\ncd helloworld\nmake init proto update tidy\ngo-micro run\ngo-micro\ncall helloworld Helloworld.Call '{\"name\": \"John\"}'" }, { "type": "code", "lang": "yaml", "code": "version: \"3.7\"services:\n # -----------------------------\n # jaeger servcie\n # -----------------------------\n jaeger:\n image: jaegertracing/all-in-one:1.20\n ports:\n - \"1314:6831/udp\"\n - \"1315:16686\"\n networks:\n - backend# -----------------------------# networks# -----------------------------networks:\n backend:\n external: true" }, { "type": "paragraph", "html": "— — — — — — — — — — — — — — — — — — — — — — — — — — —" }, { "type": "paragraph", "html": "https://www.bookstack.cn/read/microservices-in-golang/1.md" }, { "type": "paragraph", "html": "— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —" }, { "type": "paragraph", "html": "Good Example" }, { "type": "paragraph", "html": "— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — -" }, { "type": "heading", "level": 2, "text": "Go-micro Make new Project" }, { "type": "paragraph", "html": "‍‍‍" }, { "type": "paragraph", "html": "For initial project use below command" }, { "type": "code", "lang": "bash", "code": "go-micro new service helloworld" }, { "type": "paragraph", "html": "download the dependency" }, { "type": "code", "lang": "bash", "code": "go mod tidy go get -u" }, { "type": "paragraph", "html": "Write the GRPC and then make it" }, { "type": "code", "lang": "bash", "code": "make proto" }, { "type": "paragraph", "html": "Import name of folder base on the path on the git hub in go.mod and import" }, { "type": "paragraph", "html": "Subscribe to DDIntel Here." }, { "type": "paragraph", "html": "DDIntel captures the more notable pieces from our main site and our popular DDI Medium publication. Check us out for more insightful work from our community." }, { "type": "paragraph", "html": "Register on AItoolverse (alpha) to get 50 DDINs" }, { "type": "paragraph", "html": "Support DDI AI Art Series: https://heartq.net/collections/ddi-ai-art-series" }, { "type": "paragraph", "html": "Join our network here: https://datadriveninvestor.com/collaborate" }, { "type": "paragraph", "html": "Follow us on LinkedIn, Twitter, YouTube, and Facebook." } ] }