forked from gagliardetto/solana-go
/
subscription.go
64 lines (57 loc) · 1.66 KB
/
subscription.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
// Copyright 2021 github.com/gagliardetto
// This file has been modified by github.com/gagliardetto
//
// Copyright 2020 dfuse Platform Inc.
//
// 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 ws
type Subscription struct {
req *request
subID uint64
stream chan result
err chan error
closeFunc func(err error)
unsubscribeMethod string
decoderFunc decoderFunc
}
type decoderFunc func([]byte) (interface{}, error)
func newSubscription(
req *request,
closeFunc func(err error),
unsubscribeMethod string,
decoderFunc decoderFunc,
) *Subscription {
return &Subscription{
req: req,
subID: 0,
stream: make(chan result, 200_000),
err: make(chan error, 100_000),
closeFunc: closeFunc,
unsubscribeMethod: unsubscribeMethod,
decoderFunc: decoderFunc,
}
}
func (s *Subscription) Recv() (interface{}, error) {
select {
case d := <-s.stream:
return d, nil
case err := <-s.err:
return nil, err
}
}
func (s *Subscription) Unsubscribe() {
s.unsubscribe(nil)
}
func (s *Subscription) unsubscribe(err error) {
s.closeFunc(err)
}