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go-zero/tools/goctl/pkg/protocgengo/protocgengo.go

57 lines
1.4 KiB
Go

package protocgengo
import (
"strings"
"time"
"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"
url = "google.golang.org/protobuf/cmd/protoc-gen-go@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 {
ver, err := Version()
if err != nil {
return false
}
return len(ver) > 0
}
// Version is used to get the version of the protoc-gen-go plugin. For older versions, protoc-gen-go does not support
// version fetching, so if protoc-gen-go --version is executed, it will cause the process to block, so it is controlled
// by a timer to prevent the older version process from blocking.
func Version() (string, error) {
path, err := env.LookUpProtocGenGo()
if err != nil {
return "", err
}
versionC := make(chan string)
go func(c chan string) {
version, _ := execx.Run(path+" --version", "")
fields := strings.Fields(version)
if len(fields) > 1 {
c <- fields[1]
}
}(versionC)
t := time.NewTimer(time.Second)
select {
case <-t.C:
return "", nil
case version := <-versionC:
return version, nil
}
}