update readme

README.md

@@ -1,9 +1,65 @@
 # GO GRPC BASIC
 
-### Requirements ( Do It Letter )
--
--
+## Requirements
+check other branch to step by step create project 
+### Validate Go Installation
+```bash
+$ go version
+go version go1.18.3 linux/amd64
+```
+
+### Validate GOPATH
+```bash
+echo $GOPATH
+```
+
+### Start Project in Go
+```bash
+cd $GOPATH/src
+mkdir -p github.com/ajikamaludin/go-grpc_basic 
+cd github.com/ajikamaludin/go-grpc_basic 
+go mod init github.com/ajikamaludin/go-grpc_basic
+go mod tidy
+```
+
+### Install Protoc
+Linux : Download zip file, extract zip file to ~/.local/, add PATH ~/.local/bin
+please read documentation from this link for more detail information
+```
+https://grpc.io/docs/protoc-installation/
+```
+
+### Validate Protoc Installation
+```bash
+$ protoc --version
+libprotoc 3.21.2
+```
+
+### Install Protoc Dependecy for Golang
+```bash
+# protoc-gen-go
+go install github.com/golang/protobuf/protoc-gen-go@latest
+# proto (optional, execute in project dir)
+go get google.golang.org/protobuf/proto@latest
+# protoc-gen-grpc-gateway
+go install github.com/grpc-ecosystem/grpc-gateway/protoc-gen-grpc-gateway@latest
+# protoc-gen-swagger
+go install github.com/grpc-ecosystem/grpc-gateway/protoc-gen-swagger@latest
+```
 
+### Add PATH
+add to your ~/.bashrc or ~/.zshrc file
+```bash
+export PATH="$PATH:$GOPATH/bin"
+```
+### Validate Protoc Dependency Golang Installation
+```bash
+~ ❯ ls $GOPATH/bin                                             
+dlv         gopls    protoc-gen-go       protoc-gen-grpc-gateway  revel
+go-outline  grpcurl  protoc-gen-go-grpc  protoc-gen-swagger
+```
+
+## Start Project
 ### Setup Project 
 - create `proto` dir 
 - create versioning dir and service dir `health`
@@ -27,17 +83,17 @@
 - create `api/v1/health/status.go` as method implment from protobuf / pb file 
 - create `router` dir in root project
 - create `grpc.go` in router dir and implement NewGRPCServer and register health api service 
-- `go get github.com/soheilhy/cmux`, is for ?
+- `go get github.com/soheilhy/cmux`, TODO: what is for ?
 - create `router.go` in router dir and implement IgnoreErr, this is for ignore error so can be safely ignore
-- `go get golang.org/x/sync/errgroup`, is for ?
+- `go get golang.org/x/sync/errgroup`, TODO: what is for ?
 - implement `main.go` to create grpc server from grpc.go with errgroup handler
 - `go run .`, run server grpc
-- `go install github.com/fullstorydev/grpcurl/cmd/grpcurl@latest`
+- `go install github.com/fullstorydev/grpcurl/cmd/grpcurl@latest`, this tool is 
 - test `grpcurl -plaintext localhost:5566 list`, to show list name of services
 - test `grpcurl -plaintext localhost:5566 list api.gogrpc.v1.health.HealthService`, to show list name of service methods
 - test `grpcurl -plaintext localhost:5566 api.gogrpc.v1.health.HealthService.Status`, to test method call in grpc 
 - result 
-```
+```json
 {
     "success": true,
     "code": "0000",
@@ -50,45 +106,49 @@
 ref https://github.com/grpc-ecosystem/grpc-gateway
 - implement `import "google/api/annotations.proto";` in proto file 
 - changes line below in all service methods for rest compile to rest  
-```
+```proto
 service HealthService {
     rpc Status(google.protobuf.Empty) returns (Response) {
-        + option (google.api.http) = {
-        +    get: "/api/gogrpc/v1/health/status"
-        + };
+        option (google.api.http) = {
+           get: "/api/gogrpc/v1/health/status"
+        };
     }
 }
 ```
 - re - compile / re - generate proto with `compile-proto.sh` in proto dir
 - `go mod tidy`
-- `go get "github.com/gorilla/handlers"`
+- `go get "github.com/gorilla/handlers"` TODO: what is for ?
 - create `http.go` in router dir and implement NewHTTPServer and register health api service 
 - register httpserver to `main.go`
-```
+```go
 g.Go(func() error { return router.NewHTTPServer(configs, logger) })
 ```
 - `go run .` run grpc and http server
 - test `curl localhost:8080/api/v1/health/status`, reponse
-```
-{"success":true,"code":"0000","desc":"SUCCESS"}
+```json
+{
+    "success":true,
+    "code":"0000",
+    "desc":"SUCCESS"
+}
 ```
 - GENERATE API DOCS: 
 - `mkdir swagger`
 - `cd proto`
-- `./gen-apidoc.sh`
+- `./gen-apidoc.sh`, will be generated in `swagger/docs.json`
 - register apidoc to http server in `http.go` implement 
-```
-#########
+```go
+/////////
 
 if configs.Config.Env != constants.EnvProduction {
 	CreateSwagger(mux)
 }
 
-##########
+/////////
 
 func CreateSwagger(gwmux *http.ServeMux) {
 	gwmux.HandleFunc("/api/health/docs.json", func(w http.ResponseWriter, r *http.Request) {
 		http.ServeFile(w, r, "swagger/docs.json")
 	})
 }
-```
+```