-
-
Notifications
You must be signed in to change notification settings - Fork 16
/
streams.go
153 lines (127 loc) · 3.6 KB
/
streams.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
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
/*
Copyright 2023 Avi Zimmerman <avi.zimmerman@gmail.com>
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package clients
import (
"errors"
"io"
v1 "github.com/webmeshproj/api/v1"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/status"
"github.com/webmeshproj/webmesh/pkg/context"
)
func inProcessQueryPipe(ctx context.Context, server v1.PluginServer) v1.StorageQuerierPlugin_InjectQuerierClient {
// TODO: Make this configurable
schan := make(chan *v1.PluginQuery, 100)
rchan := make(chan *v1.PluginQueryResult, 100)
ctx, cancel := context.WithCancel(ctx)
srv := &inProcessStreamServer[v1.PluginQuery, v1.PluginQueryResult]{ctx, schan, rchan}
cli := &inProcessStreamClient[v1.PluginQuery, v1.PluginQueryResult]{ctx, cancel, schan, rchan}
go func() {
defer cancel()
err := server.(v1.StorageQuerierPluginServer).InjectQuerier(srv)
if err != nil {
if err != io.EOF && err != context.Canceled && status.Code(err) != codes.Unimplemented {
context.LoggerFrom(ctx).Error("error in plugin query", "error", err)
}
}
}()
return cli
}
type inProcessStreamClient[REQ, RESP any] struct {
ctx context.Context
cancel context.CancelFunc
schan chan *REQ
rchan chan *RESP
}
func (p *inProcessStreamClient[REQ, RESP]) Context() context.Context {
return p.ctx
}
func (p *inProcessStreamClient[REQ, RESP]) Header() (metadata.MD, error) {
return nil, nil
}
func (p *inProcessStreamClient[REQ, RESP]) Trailer() metadata.MD {
return nil
}
func (p *inProcessStreamClient[REQ, RESP]) CloseSend() error {
p.cancel()
return nil
}
func (p *inProcessStreamClient[REQ, RESP]) Recv() (*REQ, error) {
select {
case <-p.ctx.Done():
return nil, io.EOF
case res := <-p.schan:
return res, nil
}
}
func (p *inProcessStreamClient[REQ, RESP]) RecvMsg(m interface{}) error {
return errors.New("not implemented")
}
func (p *inProcessStreamClient[REQ, RESP]) Send(in *RESP) error {
select {
case <-p.ctx.Done():
return p.ctx.Err()
default:
}
select {
case p.rchan <- in:
default:
}
return nil
}
func (p *inProcessStreamClient[REQ, RESP]) SendMsg(m interface{}) error {
return p.Send(m.(*RESP))
}
type inProcessStreamServer[REQ, RESP any] struct {
ctx context.Context
schan chan *REQ
rchan chan *RESP
}
func (p *inProcessStreamServer[REQ, RESP]) Context() context.Context {
return p.ctx
}
func (p *inProcessStreamServer[REQ, RESP]) SetHeader(metadata.MD) error {
return nil
}
func (p *inProcessStreamServer[REQ, RESP]) SendHeader(m metadata.MD) error {
return nil
}
func (p *inProcessStreamServer[REQ, RESP]) SetTrailer(metadata.MD) {
}
func (p *inProcessStreamServer[REQ, RESP]) Send(in *REQ) error {
select {
case <-p.ctx.Done():
return p.ctx.Err()
default:
}
select {
case p.schan <- in:
default:
}
return nil
}
func (p *inProcessStreamServer[REQ, RESP]) SendMsg(m interface{}) error {
return p.Send(m.(*REQ))
}
func (p *inProcessStreamServer[REQ, RESP]) Recv() (*RESP, error) {
select {
case <-p.ctx.Done():
return nil, io.EOF
case res := <-p.rchan:
return res, nil
}
}
func (p *inProcessStreamServer[REQ, RESP]) RecvMsg(m interface{}) error {
return errors.New("not implemented")
}