Feature: Add goctl env (#1557)

tools/goctl/pkg/protocgengogrpc/protocgengogrpc.go

@@ -0,0 +1,44 @@
+package protocgengogrpc
+
+import (
+	"strings"
+
+	"github.com/zeromicro/go-zero/tools/goctl/pkg/goctl"
+	"github.com/zeromicro/go-zero/tools/goctl/pkg/golang"
+	"github.com/zeromicro/go-zero/tools/goctl/rpc/execx"
+	"github.com/zeromicro/go-zero/tools/goctl/util/env"
+)
+
+const (
+	Name = "protoc-gen-go-grpc"
+	url  = "google.golang.org/grpc/cmd/protoc-gen-go-grpc@latest"
+)
+
+func Install(cacheDir string) (string, error) {
+	return goctl.Install(cacheDir, Name, func(dest string) (string, error) {
+		err := golang.Install(url)
+		return dest, err
+	})
+}
+
+func Exists() bool {
+	_, err := env.LookUpProtocGenGoGrpc()
+	return err == nil
+}
+
+// Version is used to get the version of the protoc-gen-go-grpc plugin.
+func Version() (string, error) {
+	path, err := env.LookUpProtocGenGoGrpc()
+	if err != nil {
+		return "", err
+	}
+	version, err := execx.Run(path+" --version", "")
+	if err != nil {
+		return "", err
+	}
+	fields := strings.Fields(version)
+	if len(fields) > 1 {
+		return fields[1], nil
+	}
+	return "", nil
+}