1.升級至micro/v2

1.刪除原來的go mod 所在目錄

cd $GOPATH/pkg
sudo rm -rf *
ls

2.下載protobuf

go get -u -v github.com/golang/protobuf@latest
ls -la $GOPATH/bin | grep protoc-gen-go

3.下載micro/v2

由於網絡原因，需要多執行幾次

go get -u -v github.com/micro/micro/v2

最後會有如下錯誤，是由於go.mod的異常導致的，可以暫時不管

go get: github.com/mholt/[email protected] updating to
	github.com/mholt/[email protected]: parsing go.mod:
	module declares its path as: github.com/caddyserver/certmagic
	        but was required as: github.com/mholt/certmagic

4.編譯安裝micro/v2

cd $GOPATH/pkg/mod/github.com/micro/micro/v2*
# explain why packages or modules are needed(解釋爲什麼需要依賴)
go mod why
# add missing and remove unused modules(拉取缺少的模塊，移除不用的模塊)
go mod tidy
# verify dependencies have expected content (驗證依賴是否正確）
go mod verify
sudo $GOROOT/bin/go build -o /bin/micro main.go

5.查看版本

cd ~
micro --version

2.consul

爲了方便訪問，指定IP

ifconfig

consul agent -dev -client=192.168.56.14

3.service

1.創建目錄，剝離pb.go文件

mkdir -p $GOPATH/src/www/kokutas/com/pb

2.service創建

創建service【srv】服務，並自定義命名空間www.kokutas.com【默認是go.micro】
1.服務名稱的最後一級不要使用下劃線，否則生成的handler/最後一級目錄名.go中的服務還要做修改，【protobuf生成的時候的服務命名規則問題】
2.type的類型不再是之前的srv，而是service
3.默認爲當前路徑創建，不再使用$GOPATH的路徑，如果需要的話，需要自行先進入$GOPATH路徑

cd $GOPATH/src
micro new --type service --namespace www.kokutas.com www/kokutas/com/user

go get -u github.com/golang/protobuf/{proto,protoc-gen-go}
go get -u github.com/micro/protoc-gen-micro/v2

3.修改.proto文件

修改$GOPATH/src/www/kokutas/com/user/proto/user/user.proto不然老是編譯的時候提示警告信息

package www.kokutas.com.service.user;
option go_package = "proto/user;www_kokutas_com_service_user";

4.進行編譯.proto

cd $GOPATH/src
cd www/kokutas/com/user
tree $GOPATH/src/www/kokutas/com/
protoc --proto_path=.:$GOPATH/src --go_out=$GOPATH/src/www/kokutas/com/pb --micro_out=$GOPATH/src/www/kokutas/com/pb proto/user/user.proto

5.go mod init [*.pb.go目錄]

方便後續導包異常的處理【將proto文件從本地導入(pb.go文件所在目錄)】

tree $GOPATH/src/www/kokutas/com
cd $GOPATH/src/www/kokutas/com/pb/proto/user/ && go mod init www/kokutas/com/pb/proto/user && cd $GOPATH/src/www/kokutas/com/user

6.go mod why

explain why packages or modules are needed(解釋爲什麼需要依賴)

cd $GOPATH/src/www/kokutas/com/user
go mod why

www/kokutas/com/user imports
	www/kokutas/com/user/proto/user: package www/kokutas/com/user/proto/user is not in GOROOT (/usr/local/go/src/www/kokutas/com/user/proto/user)

7.修改go.mod 文件

修改$GOPATH/src/www/kokutas/com/user下的go.mod 文件

追加【本地只能是相對路徑(=>後面的部分必須是相對路徑),換行符不要動】

cd $GOPATH/src/www/kokutas/com/user
tee -a $GOPATH/src/www/kokutas/com/user/go.mod <<-'EOF'

// 添加是針對proto文件的本地包導入問題處理：只有這個能被go mod why檢測到
require "www/kokutas/com/user/proto/user" v0.0.0
replace "www/kokutas/com/user/proto/user" => "../pb/proto/user"
// 解決go get -u -v github.com/micro/micro/v2的問題：
// module declares its path as: github.com/caddyserver/certmagic
// but was required as: github.com/mholt/certmagic
replace github.com/mholt/certmagic => github.com/caddyserver/certmagic latest
EOF

再次執行

go mod why

8.go mod tidy

add missing and remove unused modules(拉取缺少的模塊，移除不用的模塊)

cd $GOPATH/src/www/kokutas/com/user
go mod tidy

9.go mod verify

verify dependencies have expected content (驗證依賴是否正確）

cd $GOPATH/src/www/kokutas/com/user
go mod verify

10.go mod graph【選擇性操作】

print module requirement graph (打印模塊依賴圖)

cd $GOPATH/src/www/kokutas/com/user
go mod graph

11.修改main.go

修改的是$GOPATH/src/www/kokutas/com/user/main.go

package main

import (
	"www/kokutas/com/user/handler"
	"www/kokutas/com/user/subscriber"

	"github.com/micro/go-micro/v2"
	log "github.com/micro/go-micro/v2/logger"
	"github.com/micro/go-micro/v2/registry"

	user "www/kokutas/com/user/proto/user"
	// 添加註冊插件的consul支持
	"github.com/micro/go-plugins/registry/consul/v2"
)

func main() {
	// 新建consul註冊器
	consulReg := consul.NewRegistry(
		// 註冊的consul信息
		registry.Addrs("192.168.56.14:8500"),
	)
	// New Service
	service := micro.NewService(
		micro.Name("www.kokutas.com.service.user"),
		micro.Version("latest"),
		// 服務添加consul支持
		micro.Registry(consulReg),
	)

	// Initialise service
	service.Init()

	// Register Handler
	user.RegisterUserHandler(service.Server(), new(handler.User))

	// Register Struct as Subscriber
	micro.RegisterSubscriber("www.kokutas.com.service.user", service.Server(), new(subscriber.User))

	// Run service
	if err := service.Run(); err != nil {
		log.Fatal(err)
	}
}

12.go.mod

$GOPATH/src/www/kokutas/com/user/go.mod

module www/kokutas/com/user

go 1.14

require github.com/micro/go-micro/v2 v2.5.0

require (
	github.com/micro/go-micro v1.18.0 // indirect
	github.com/micro/go-plugins/registry/consul/v2 v2.5.0 // indirect
	google.golang.org/protobuf v1.21.0 // indirect
	// 添加是針對proto文件的本地包導入問題處理：只有這個能被go mod why檢測到
	www/kokutas/com/user/proto/user v0.0.0
)

replace www/kokutas/com/user/proto/user => ../pb/proto/user

// 解決go get -u -v github.com/micro/micro/v2的問題：
// module declares its path as: github.com/caddyserver/certmagic
// but was required as: github.com/mholt/certmagic
replace github.com/mholt/certmagic => github.com/caddyserver/certmagic v0.10.12

13.啓動service

cd $GOPATH/src/www/kokutas/com/user
go run main.go --registry=consul

micro/v2 默認就是grpc進行service的監聽

4.web

1.web創建

新開一個終端，創建client【web】服務，並自定義命名空間www.kokutas.com【默認是go.micro】

cd $GOPATH/src
micro new --type web --namespace www.kokutas.com www/kokutas/com/web

2.go mod why

explain why packages or modules are needed(解釋爲什麼需要依賴)

cd $GOPATH/src
cd www/kokutas/com/web
go mod why

go: finding module for package github.com/micro/go-micro/v2/logger
go: finding module for package github.com/micro/go-micro/v2/client
go: finding module for package github.com/micro/go-micro/v2/web
go: found github.com/micro/go-micro/v2/logger in github.com/micro/go-micro/v2 v2.5.0
www/kokutas/com/web/handler imports
	path/to/service/proto/web: package path/to/service/proto/web is not in GOROOT (/usr/local/go/src/path/to/service/proto/web)

3.修改go.mod文件

修改$GOPATH/src/www/kokutas/com/web下的go.mod 文件

追加【本地只能是相對路徑(=>後面的部分必須是相對路徑),換行符不要動】

tee -a $GOPATH/src/www/kokutas/com/web/go.mod <<-'EOF'

// 添加是針對proto文件的本地包導入問題處理：只有這個能被go mod why檢測到
require "path/to/service/proto/web" v0.0.0
replace "path/to/service/proto/web" => "../pb/proto/user"
// 解決go get -u -v github.com/micro/micro/v2的問題：
// module declares its path as: github.com/caddyserver/certmagic
// but was required as: github.com/mholt/certmagic
replace github.com/mholt/certmagic => github.com/caddyserver/certmagic latest
EOF

再次執行

go mod why

4.go mod tidy

add missing and remove unused modules(拉取缺少的模塊，移除不用的模塊)

cd $GOPATH/src/www/kokutas/com/web
go mod tidy

5.go mod verify

verify dependencies have expected content (驗證依賴是否正確）

cd $GOPATH/src/www/kokutas/com/web
go mod verify

6.go mod graph【選擇性操作】

print module requirement graph (打印模塊依賴圖)

cd $GOPATH/src/www/kokutas/com/web
go mod graph

7.修改main.go

修改的是$GOPATH/src/www/kokutas/com/web/main.go

package main

import (
	"net/http"
	"www/kokutas/com/web/handler"

	log "github.com/micro/go-micro/v2/logger"
	"github.com/micro/go-micro/v2/web"

	// 添加註冊插件的consul支持
	"github.com/micro/go-micro/v2/registry"
	"github.com/micro/go-plugins/registry/consul/v2"
)

func main() {
	// 新建consul註冊器
	consulReg := consul.NewRegistry(
		// 註冊的consul信息
		registry.Addrs("192.168.56.14:8500"),
	)
	// create new web service
	service := web.NewService(
		web.Name("www.kokutas.com.web.web"),
		web.Version("latest"),
		web.Address("192.168.56.14:8080"),
		web.Registry(consulReg),
	)

	// initialise service
	if err := service.Init(); err != nil {
		log.Fatal(err)
	}

	// register html handler
	service.Handle("/", http.FileServer(http.Dir("html")))

	// register call handler
	service.HandleFunc("/web/call", handler.WebCall)

	// run service
	if err := service.Run(); err != nil {
		log.Fatal(err)
	}
}

8.修改handler/handler.go

修改$GOPATH/src/www/kokutas/com/web/handler/handler.go

package handler

import (
	"context"
	"encoding/json"
	"net/http"
	"time"

	web "path/to/service/proto/web"

	"github.com/micro/go-micro/v2/client"
)

func WebCall(w http.ResponseWriter, r *http.Request) {
	// decode the incoming request as json
	var request map[string]interface{}
	if err := json.NewDecoder(r.Body).Decode(&request); err != nil {
		http.Error(w, err.Error(), 500)
		return
	}

	// call the backend service
	// NewUserService和www.kokutas.com.service.user要與proto/user.pb.go中的一致
	webClient := web.NewUserService("www.kokutas.com.service.user", client.DefaultClient)
	rsp, err := webClient.Call(context.TODO(), &web.Request{
		Name: request["name"].(string),
	})
	if err != nil {
		http.Error(w, err.Error(), 500)
		return
	}

	// we want to augment the response
	response := map[string]interface{}{
		"msg": rsp.Msg,
		"ref": time.Now().UnixNano(),
	}

	// encode and write the response as json
	if err := json.NewEncoder(w).Encode(response); err != nil {
		http.Error(w, err.Error(), 500)
		return
	}
}

9.go.mod

$GOPATH/src/www/kokutas/com/web/go.mod

module www/kokutas/com/web

go 1.14

require github.com/micro/go-micro/v2 v2.5.0

require (
	github.com/micro/go-plugins/registry/consul/v2 v2.5.0 // indirect
	google.golang.org/protobuf v1.21.0 // indirect
	// 添加是針對proto文件的本地包導入問題處理：只有這個能被go mod why檢測到
	path/to/service/proto/web v0.0.0
)

replace path/to/service/proto/web => ../pb/proto/user

// 解決go get -u -v github.com/micro/micro/v2的問題：
// module declares its path as: github.com/caddyserver/certmagic
// but was required as: github.com/mholt/certmagic
replace github.com/mholt/certmagic => github.com/caddyserver/certmagic v0.10.12

10.啓動web

cd $GOPATH/src/www/kokutas/com/web/
go run main.go --registry=consul

5.訪問

1.consul web訪問

瀏覽器打開：

http://192.168.56.14:8500

2.web service 訪問

http://192.168.56.14:8080

Microservice(九)[微服務-micro/v2-consul-protobuf-RPC-ubuntu]

Microservice-微服務-micro/v2-consul-protobuf-RPC-ubuntu

1.升級至micro/v2

1.刪除原來的go mod 所在目錄

2.下載protobuf

3.下載micro/v2

4.編譯安裝micro/v2

5.查看版本

2.consul

3.service

1.創建目錄，剝離pb.go文件

2.service創建

3.修改.proto文件

4.進行編譯.proto

5.go mod init [*.pb.go目錄]

6.go mod why

7.修改go.mod 文件

8.go mod tidy

9.go mod verify

10.go mod graph【選擇性操作】

11.修改main.go

12.go.mod

13.啓動service

4.web

1.web創建

2.go mod why

3.修改go.mod文件

4.go mod tidy

5.go mod verify

6.go mod graph【選擇性操作】

7.修改main.go

8.修改handler/handler.go

9.go.mod

10.啓動web

5.訪問

1.consul web訪問

2.web service 訪問