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kratos/pkg/net/rpc/warden/internal/status/status.go

120 lines
3.0 KiB

package status
import (
"context"
"strconv"
"github.com/go-kratos/kratos/pkg/ecode"
"github.com/golang/protobuf/proto"
"github.com/pkg/errors"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
)
// togRPCCode convert ecode.Codo to gRPC code
func togRPCCode(code ecode.Codes) codes.Code {
switch code.Code() {
case ecode.OK.Code():
return codes.OK
case ecode.RequestErr.Code():
return codes.InvalidArgument
case ecode.NothingFound.Code():
return codes.NotFound
case ecode.Unauthorized.Code():
return codes.Unauthenticated
case ecode.AccessDenied.Code():
return codes.PermissionDenied
case ecode.LimitExceed.Code():
return codes.ResourceExhausted
case ecode.MethodNotAllowed.Code():
return codes.Unimplemented
case ecode.Deadline.Code():
return codes.DeadlineExceeded
case ecode.ServiceUnavailable.Code():
return codes.Unavailable
}
return codes.Unknown
}
func toECode(gst *status.Status) ecode.Code {
gcode := gst.Code()
switch gcode {
case codes.OK:
return ecode.OK
case codes.InvalidArgument:
return ecode.RequestErr
case codes.NotFound:
return ecode.NothingFound
case codes.PermissionDenied:
return ecode.AccessDenied
case codes.Unauthenticated:
return ecode.Unauthorized
case codes.ResourceExhausted:
return ecode.LimitExceed
case codes.Unimplemented:
return ecode.MethodNotAllowed
case codes.DeadlineExceeded:
return ecode.Deadline
case codes.Unavailable:
return ecode.ServiceUnavailable
case codes.Unknown:
return ecode.String(gst.Message())
}
return ecode.ServerErr
}
// FromError convert error for service reply and try to convert it to grpc.Status.
func FromError(svrErr error) (gst *status.Status) {
var err error
svrErr = errors.Cause(svrErr)
if code, ok := svrErr.(ecode.Codes); ok {
// TODO: deal with err
if gst, err = gRPCStatusFromEcode(code); err == nil {
return
}
}
// for some special error convert context.Canceled to ecode.Canceled,
// context.DeadlineExceeded to ecode.DeadlineExceeded only for raw error
// if err be wrapped will not effect.
switch svrErr {
case context.Canceled:
gst, _ = gRPCStatusFromEcode(ecode.Canceled)
case context.DeadlineExceeded:
gst, _ = gRPCStatusFromEcode(ecode.Deadline)
default:
gst, _ = status.FromError(svrErr)
}
return
}
func gRPCStatusFromEcode(code ecode.Codes) (*status.Status, error) {
var st *ecode.Status
switch v := code.(type) {
case *ecode.Status:
st = v
case ecode.Code:
st = ecode.FromCode(v)
default:
st = ecode.Error(ecode.Code(code.Code()), code.Message())
for _, detail := range code.Details() {
if msg, ok := detail.(proto.Message); ok {
st.WithDetails(msg)
}
}
}
gst := status.New(codes.Unknown, strconv.Itoa(st.Code()))
return gst.WithDetails(st.Proto())
}
// ToEcode convert grpc.status to ecode.Codes
func ToEcode(gst *status.Status) ecode.Codes {
details := gst.Details()
for _, detail := range details {
// convert detail to status only use first detail
if pb, ok := detail.(proto.Message); ok {
return ecode.FromProto(pb)
}
}
return toECode(gst)
}