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wrap-error.go
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wrap-error.go
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// Copyright (c) 2021 6 River Systems
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
package grpc
import (
"fmt"
"google.golang.org/grpc/status"
)
// workaround for grpc not supporting error unwrapping. if err seems to be a
// grpc status error, returns a new error with the same code & details, but a
// wrapped description. Otherwise wraps err normally. upstream:
// https://github.com/grpc/grpc-go/issues/2934
func WrapError(err error, format string, args ...interface{}) error {
if s, ok := status.FromError(err); ok {
// converting to protobuf will also clone it
sp := s.Proto()
args = append(args, sp.Message)
sp.Message = fmt.Sprintf(format+": %s", args...)
return status.ErrorProto(sp)
}
args = append(args, err)
return fmt.Errorf(format+": %w", args...)
}