blob: 1df753a50ae853389a5129d9a04e78385d52c87e (
plain)
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
|
package gateway
import (
"context"
"math/rand"
"time"
"github.com/rs/zerolog"
)
type Heartbeat interface {
Start(ctx context.Context, interval time.Duration)
ForceHeartbeat()
Ack()
}
var _ Heartbeat = &HeartbeatImpl{}
type HeartbeatImpl struct {
ctx context.Context
logger *zerolog.Logger
gateway Gateway
}
func NewHeartbeat(logger *zerolog.Logger, gateway Gateway) *HeartbeatImpl {
return &HeartbeatImpl{
ctx: nil,
logger: logger,
gateway: gateway,
}
}
func (h *HeartbeatImpl) Start(ctx context.Context, interval time.Duration) {
h.ctx = ctx
go h.heartbeatRoutine(interval)
}
func (h *HeartbeatImpl) ForceHeartbeat() {
h.gateway.Heartbeat()
}
func (h *HeartbeatImpl) Ack() {
// What do we do here?
h.logger.Debug().Msg("received heartbeat ack")
}
func (h *HeartbeatImpl) heartbeatRoutine(interval time.Duration) {
h.logger.Debug().Msgf("beating heart every %dms", interval.Milliseconds())
// REF: heartbeat_interval * jitter
jitter := rand.Intn(int(interval))
select {
case <-time.After(time.Duration(jitter)):
case <-h.ctx.Done():
h.logger.Debug().Msg("heartbeat routine stopped before jitter heartbeat")
return
}
ticker := time.NewTicker(interval)
defer ticker.Stop()
for {
h.logger.Debug().Msg("sending heartbeat")
if err := h.gateway.Heartbeat(); err != nil {
h.logger.Error().Err(err).Msg("failed to send heartbeat")
}
select {
case <-h.ctx.Done():
return
case <-ticker.C:
continue
}
}
}
|
