monibuca_engine/subscribers.go at v4 · zhang-chuanfeng/monibuca_engine · GitHub

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
package engine

import (
	"encoding/json"

	"go.uber.org/zap"
	"m7s.live/engine/v4/common"
	"m7s.live/engine/v4/config"
)

type Subscribers struct {
	public      map[ISubscriber]*waitTracks
	internal    map[ISubscriber]*waitTracks
	waits       map[*waitTracks]struct{}
	waitAborted bool // 不再等待了
}

func (s *Subscribers) Init() {
	s.public = make(map[ISubscriber]*waitTracks)
	s.internal = make(map[ISubscriber]*waitTracks)
	s.waits = make(map[*waitTracks]struct{})
}

func (s *Subscribers) MarshalJSON() ([]byte, error) {
	var subers []ISubscriber
	for suber := range s.public {
		subers = append(subers, suber)
	}
	return json.Marshal(subers)
}

func (s *Subscribers) Broadcast(event any) {
	for sub := range s.internal {
		sub.OnEvent(event)
	}
	for sub := range s.public {
		sub.OnEvent(event)
	}
}

func (s *Subscribers) Pick() ISubscriber {
	for sub := range s.public {
		return sub
	}
	return nil
}

func (s *Subscribers) Len() int {
	return len(s.public)
}

func (s *Subscribers) RangeAll(f func(sub ISubscriber)) {
	s.rangeAll(func(sub ISubscriber, wait *waitTracks) {
		f(sub)
	})
}

func (s *Subscribers) rangeAll(f func(sub ISubscriber, wait *waitTracks)) {
	for sub, wait := range s.internal {
		f(sub, wait)
	}
	for sub, wait := range s.public {
		f(sub, wait)
	}
}

func (s *Subscribers) OnTrack(track common.Track) {
	s.rangeAll(func(sub ISubscriber, wait *waitTracks) {
		if _, ok := s.waits[wait]; ok {
			if wait.Accept(track) {
				delete(s.waits, wait)
			}
		} else {
			sub.OnEvent(track)
		}
	})
}

func (s *Subscribers) OnPublisherLost(event StateEvent) {
	s.rangeAll(func(sub ISubscriber, wait *waitTracks) {
		if _, ok := s.waits[wait]; ok {
			wait.Reject(ErrPublisherLost)
			delete(s.waits, wait)
		}
		sub.OnEvent(event)
	})
}

func (s *Subscribers) AbortWait() {
	s.waitAborted = true
	for wait := range s.waits {
		wait.Resolve()
		delete(s.waits, wait)
	}
}

func (s *Subscribers) Delete(suber ISubscriber) {
	delete(s.public, suber)
	io := suber.GetSubscriber()
	io.Info("suber -1", zap.Int("remains", s.Len()))
	if config.Global.EnableSubEvent {
		EventBus <- UnsubscribeEvent{CreateEvent(suber)}
	}
}

func (s *Subscribers) Add(suber ISubscriber, wait *waitTracks) {
	io := suber.GetSubscriber()
	if io.Config.Internal {
		s.internal[suber] = wait
		io.Info("innersuber +1", zap.Int("remains", len(s.internal)))
	} else {
		s.public[suber] = wait
		io.Info("suber +1", zap.Int("remains", s.Len()))
		if config.Global.EnableSubEvent {
			EventBus <- suber
		}
	}
	if wait.NeedWait() {
		s.waits[wait] = struct{}{}
	} else {
		wait.Resolve()
	}
}

func (s *Subscribers) Dispose() {
	for w := range s.waits {
		w.Reject(ErrStreamIsClosed)
	}
	s.waits = nil
	s.public = nil
	s.internal = nil
}