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protovalidate.go
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protovalidate.go
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package rpc
import (
"context"
"github.com/bufbuild/protovalidate-go"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"google.golang.org/protobuf/reflect/protoreflect"
)
func pvUnaryServerInterceptor(pv *protovalidate.Validator) grpc.UnaryServerInterceptor {
// nolint: lll
return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
msg, ok := req.(protoreflect.ProtoMessage)
if !ok {
return nil, status.Error(codes.InvalidArgument, "invalid message type")
}
if err := pv.Validate(msg); err != nil {
return nil, status.Error(codes.InvalidArgument, err.Error())
}
return handler(ctx, req)
}
}
func pvStreamServerInterceptor(pv *protovalidate.Validator) grpc.StreamServerInterceptor {
// nolint: lll
return func(srv interface{}, stream grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
wrapper := &recvWrapper{pv: pv, ServerStream: stream}
return handler(srv, wrapper)
}
}
type recvWrapper struct {
pv *protovalidate.Validator
grpc.ServerStream
}
func (s *recvWrapper) RecvMsg(m interface{}) error {
if err := s.ServerStream.RecvMsg(m); err != nil {
return err
}
if msg, ok := m.(protoreflect.ProtoMessage); ok {
if err := s.pv.Validate(msg); err != nil {
return err
}
}
return nil
}