-
Notifications
You must be signed in to change notification settings - Fork 198
/
grpc_interceptor.go
114 lines (101 loc) · 4.43 KB
/
grpc_interceptor.go
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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
// The MIT License
//
// Copyright (c) 2022 Temporal Technologies Inc. All rights reserved.
//
// Copyright (c) 2020 Uber Technologies, Inc.
//
// 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 converter
import (
"fmt"
"google.golang.org/grpc"
commonpb "go.temporal.io/api/common/v1"
failurepb "go.temporal.io/api/failure/v1"
"go.temporal.io/api/proxy"
)
// PayloadCodecGRPCClientInterceptorOptions holds interceptor options.
// Currently this is just the list of codecs to use.
type PayloadCodecGRPCClientInterceptorOptions struct {
Codecs []PayloadCodec
}
// NewPayloadCodecGRPCClientInterceptor returns a GRPC Client Interceptor that will mimic the encoding
// that the SDK system would perform when configured with a matching EncodingDataConverter.
// Note: This approach does not support use cases that rely on the ContextAware DataConverter interface as
// workflow context is not available at the GRPC level.
func NewPayloadCodecGRPCClientInterceptor(options PayloadCodecGRPCClientInterceptorOptions) (grpc.UnaryClientInterceptor, error) {
return proxy.NewPayloadVisitorInterceptor(proxy.PayloadVisitorInterceptorOptions{
Outbound: &proxy.VisitPayloadsOptions{
Visitor: func(vpc *proxy.VisitPayloadsContext, payloads []*commonpb.Payload) ([]*commonpb.Payload, error) {
var err error
for i := len(options.Codecs) - 1; i >= 0; i-- {
if payloads, err = options.Codecs[i].Encode(payloads); err != nil {
return payloads, err
}
}
return payloads, nil
},
SkipSearchAttributes: true,
},
Inbound: &proxy.VisitPayloadsOptions{
Visitor: func(vpc *proxy.VisitPayloadsContext, payloads []*commonpb.Payload) ([]*commonpb.Payload, error) {
var err error
for _, codec := range options.Codecs {
if payloads, err = codec.Decode(payloads); err != nil {
return payloads, err
}
}
return payloads, nil
},
SkipSearchAttributes: true,
},
})
}
// NewFailureGRPCClientInterceptorOptions holds interceptor options.
type NewFailureGRPCClientInterceptorOptions struct {
// DataConverter is optional. If not set the SDK's dataconverter will be used.
DataConverter DataConverter
// Whether to Encode attributes. The current implementation requires this be true.
EncodeCommonAttributes bool
}
// NewFailureGRPCClientInterceptor returns a GRPC Client Interceptor that will mimic the encoding
// that the SDK system would perform when configured with a FailureConverter with the EncodeCommonAttributes option set.
// When combining this with NewPayloadCodecGRPCClientInterceptor you should ensure that NewFailureGRPCClientInterceptor is
// before NewPayloadCodecGRPCClientInterceptor in the chain.
func NewFailureGRPCClientInterceptor(options NewFailureGRPCClientInterceptorOptions) (grpc.UnaryClientInterceptor, error) {
if !options.EncodeCommonAttributes {
return nil, fmt.Errorf("EncodeCommonAttributes must be set for this interceptor to function")
}
dc := options.DataConverter
if dc == nil {
dc = GetDefaultDataConverter()
}
return proxy.NewFailureVisitorInterceptor(proxy.FailureVisitorInterceptorOptions{
Outbound: &proxy.VisitFailuresOptions{
Visitor: func(vpc *proxy.VisitFailuresContext, failure *failurepb.Failure) error {
return EncodeCommonFailureAttributes(dc, failure)
},
},
Inbound: &proxy.VisitFailuresOptions{
Visitor: func(vpc *proxy.VisitFailuresContext, failure *failurepb.Failure) error {
DecodeCommonFailureAttributes(dc, failure)
return nil
},
},
})
}