1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
// Copyright (c) The go-grpc-middleware Authors.
// Licensed under the Apache License 2.0.
package validator
import (
"context"
"google.golang.org/grpc"
)
// UnaryServerInterceptor returns a new unary server interceptor that validates incoming messages.
//
// Invalid messages will be rejected with `InvalidArgument` before reaching any userspace handlers.
// Note that generated codes prior to protoc-gen-validate v0.6.0 do not provide an all-validation
// interface. In this case the interceptor fallbacks to legacy validation and `all` is ignored.
func UnaryServerInterceptor(opts ...Option) grpc.UnaryServerInterceptor {
o := evaluateOpts(opts)
return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (interface{}, error) {
if err := validate(ctx, req, o.shouldFailFast, o.onValidationErrCallback); err != nil {
return nil, err
}
return handler(ctx, req)
}
}
// UnaryClientInterceptor returns a new unary client interceptor that validates outgoing messages.
//
// Invalid messages will be rejected with `InvalidArgument` before sending the request to server.
// Note that generated codes prior to protoc-gen-validate v0.6.0 do not provide an all-validation
// interface. In this case the interceptor fallbacks to legacy validation and `all` is ignored.
func UnaryClientInterceptor(opts ...Option) grpc.UnaryClientInterceptor {
o := evaluateOpts(opts)
return func(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
if err := validate(ctx, req, o.shouldFailFast, o.onValidationErrCallback); err != nil {
return err
}
return invoker(ctx, method, req, reply, cc, opts...)
}
}
// StreamServerInterceptor returns a new streaming server interceptor that validates incoming messages.
//
// Note that generated codes prior to protoc-gen-validate v0.6.0 do not provide an all-validation
// interface. In this case the interceptor fallbacks to legacy validation and `all` is ignored.
// The stage at which invalid messages will be rejected with `InvalidArgument` varies based on the
// type of the RPC. For `ServerStream` (1:m) requests, it will happen before reaching any userspace
// handlers. For `ClientStream` (n:1) or `BidiStream` (n:m) RPCs, the messages will be rejected on
// calls to `stream.Recv()`.
func StreamServerInterceptor(opts ...Option) grpc.StreamServerInterceptor {
o := evaluateOpts(opts)
return func(srv interface{}, stream grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
wrapper := &recvWrapper{
options: o,
ServerStream: stream,
}
return handler(srv, wrapper)
}
}
type recvWrapper struct {
*options
grpc.ServerStream
}
func (s *recvWrapper) RecvMsg(m any) error {
if err := s.ServerStream.RecvMsg(m); err != nil {
return err
}
if err := validate(s.Context(), m, s.shouldFailFast, s.onValidationErrCallback); err != nil {
return err
}
return nil
}
|
