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|
package grpctool
import (
"context"
"fmt"
"net"
"net/url"
"strings"
"github.com/ash2k/stager"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/tool"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/tool/prototool"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/status"
)
func HandleIOError(msg string, err error) error {
if IsStatusError(err) {
s := status.Convert(err).Proto()
s.Message = fmt.Sprintf("%s: %s", msg, s.Message)
err = status.ErrorProto(s)
} else {
err = status.Errorf(codes.Canceled, "%s: %v", msg, err)
}
return err
}
func RequestCanceledOrTimedOut(err error) bool {
return RequestCanceled(err) || RequestTimedOut(err)
}
func RequestCanceled(err error) bool {
for err != nil {
if err == context.Canceled { //nolint:errorlint
return true
}
code := status.Code(err)
if code == codes.Canceled {
return true
}
switch x := err.(type) { //nolint:errorlint
case interface{ Unwrap() error }:
err = x.Unwrap()
case interface{ Unwrap() []error }: // support errors produced by errors.Join()
for _, err = range x.Unwrap() {
if RequestCanceled(err) {
return true
}
}
return false
default:
return false
}
}
return false
}
func RequestTimedOut(err error) bool {
for err != nil {
if err == context.DeadlineExceeded { //nolint:errorlint
return true
}
code := status.Code(err)
if code == codes.DeadlineExceeded {
return true
}
switch x := err.(type) { //nolint:errorlint
case interface{ Unwrap() error }:
err = x.Unwrap()
case interface{ Unwrap() []error }: // support errors produced by errors.Join()
for _, err = range x.Unwrap() {
if RequestTimedOut(err) {
return true
}
}
return false
default:
return false
}
}
return false
}
func StartServer(stage stager.Stage, server *grpc.Server, listener func() (net.Listener, error), onStop func()) {
stage.Go(func(ctx context.Context) error {
// gRPC listener
lis, err := listener()
if err != nil {
return err
}
return server.Serve(lis)
})
stage.Go(func(ctx context.Context) error {
<-ctx.Done() // can be canceled because Serve() failed or main ctx was canceled or some stage failed
onStop()
server.GracefulStop()
return nil
})
}
func IsStatusError(err error) bool {
_, ok := err.(interface {
GRPCStatus() *status.Status
})
return ok
}
func MetaToValuesMap(meta metadata.MD) map[string]*prototool.Values {
return tool.TransformMap[string, []string, *prototool.Values, metadata.MD, map[string]*prototool.Values](
meta,
func(vals []string) int {
return len(vals)
},
func(vals []string, sink []string) []string {
return append(sink, vals...)
},
func(value []string) *prototool.Values {
return &prototool.Values{
Value: value,
}
},
)
}
func ValuesMapToMeta(vals map[string]*prototool.Values) metadata.MD {
return tool.TransformMap[string, *prototool.Values, []string, map[string]*prototool.Values, metadata.MD](
vals,
func(v *prototool.Values) int {
return len(v.Value)
},
func(value *prototool.Values, sink []string) []string {
return append(sink, value.Value...)
},
func(v []string) []string {
return v
},
)
}
func SplitGRPCMethod(fullMethodName string) (string /* service */, string /* method */) {
if fullMethodName != "" && fullMethodName[0] == '/' {
fullMethodName = fullMethodName[1:]
}
pos := strings.LastIndex(fullMethodName, "/")
if pos == -1 {
return "unknown", fullMethodName
}
service := fullMethodName[:pos]
method := fullMethodName[pos+1:]
return service, method
}
// StatusErrorFromContext is a version of status.FromContextError(ctx.Err()).Err() that allows to augment the
// error message.
func StatusErrorFromContext(ctx context.Context, msg string) error {
err := ctx.Err()
var code codes.Code
switch err { //nolint: errorlint
case context.Canceled:
code = codes.Canceled
case context.DeadlineExceeded:
code = codes.DeadlineExceeded
default:
code = codes.Unknown
}
return status.Errorf(code, "%s: %v", msg, err)
}
// HostWithPort adds port if it was not specified in a URL with a "grpc" or "grpcs" scheme.
func HostWithPort(u *url.URL) string {
port := u.Port()
if port != "" {
return u.Host
}
switch u.Scheme {
case "grpc":
return net.JoinHostPort(u.Host, "80")
case "grpcs":
return net.JoinHostPort(u.Host, "443")
default:
// Function called with unknown scheme, just return the original host.
return u.Host
}
}
|
