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client.go
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client.go
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package golang
import (
"github.com/davidkhala/goutils"
. "github.com/davidkhala/goutils/grpc"
"google.golang.org/grpc"
"io/ioutil"
"path"
"strings"
)
// ToAddress is a utility function to trim the GRPC protocol prefix as it is not needed by GO
// if the GRPC protocol is not found, the url is returned unchanged
func ToAddress(url string) string {
if strings.HasPrefix(url, "grpc://") {
return strings.TrimPrefix(url, "grpc://")
}
if strings.HasPrefix(url, "grpcs://") {
return strings.TrimPrefix(url, "grpcs://")
}
return url
}
func Ping(target string, params Params) (connect *grpc.ClientConn, err error) {
var opts []grpc.DialOption
opts, err = DialOptionsFrom(params)
if err != nil {
return
}
connect, err = grpc.Dial(ToAddress(target), opts...)
return
}
func FindKeyFilesOrPanic(dirname string) []string {
fileInfos, err := ioutil.ReadDir(dirname)
goutils.PanicError(err)
var result []string
for _, fileInfo := range fileInfos {
var basename = fileInfo.Name()
if strings.HasSuffix(basename, "_sk") {
result = append(result, path.Join(dirname, basename))
}
}
return result
}