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