-
Notifications
You must be signed in to change notification settings - Fork 34
/
main.go
181 lines (155 loc) · 4.44 KB
/
main.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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
package main
import (
"context"
"errors"
"fmt"
"github.com/berops/claudie/services/builder/domain/usecases/metrics"
"net/http"
"os"
"os/signal"
"sync"
"syscall"
"time"
"github.com/berops/claudie/internal/healthcheck"
"github.com/berops/claudie/internal/utils"
"github.com/berops/claudie/internal/worker"
"github.com/berops/claudie/services/builder/adapters/outbound"
"github.com/berops/claudie/services/builder/domain/usecases"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/rs/zerolog/log"
"golang.org/x/sync/errgroup"
)
const (
defaultBuilderPort = 50051
defaultPrometheusPort = "9090"
healthCheckInterval = 10 * time.Second
)
func main() {
utils.InitLog("builder")
// Init connections.
cbox := &outbound.ContextBoxConnector{}
if err := cbox.Connect(); err != nil {
log.Err(err).Msgf("Failed to connect to Context-box")
return
}
defer cbox.Disconnect()
tf := &outbound.TerraformerConnector{}
if err := tf.Connect(); err != nil {
log.Err(err).Msgf("Failed to connect to Terraformer")
return
}
defer tf.Disconnect()
ans := &outbound.AnsiblerConnector{}
if err := ans.Connect(); err != nil {
log.Err(err).Msgf("Failed to connect to Ansibler")
return
}
defer ans.Disconnect()
ke := &outbound.KubeElevenConnector{}
if err := ke.Connect(); err != nil {
log.Err(err).Msgf("Failed to connect to Kube-eleven")
return
}
defer ke.Disconnect()
kb := &outbound.KuberConnector{}
if err := kb.Connect(); err != nil {
log.Err(err).Msgf("Failed to connect to Kuber")
return
}
defer kb.Disconnect()
metricsServer := &http.Server{Addr: fmt.Sprintf(":%s", utils.GetEnvDefault("PROMETHEUS_PORT", defaultPrometheusPort))}
metrics.MustRegisterCounters()
usecases := &usecases.Usecases{
ContextBox: cbox,
Terraformer: tf,
Ansibler: ans,
KubeEleven: ke,
Kuber: kb,
}
hc := healthcheck.NewHealthCheck(&log.Logger, healthCheckInterval, []healthcheck.HealthCheck{
{
Ping: usecases.Terraformer.PerformHealthCheck,
ServiceName: "terraformer",
},
{
Ping: usecases.Ansibler.PerformHealthCheck,
ServiceName: "ansibler",
},
{
Ping: usecases.KubeEleven.PerformHealthCheck,
ServiceName: "kube-eleven",
},
{
Ping: usecases.Kuber.PerformHealthCheck,
ServiceName: "kuber",
},
{
Ping: usecases.ContextBox.PerformHealthCheck,
ServiceName: "contextbox",
},
})
healthcheck.NewClientHealthChecker(fmt.Sprint(defaultBuilderPort), func() error {
return hc.CheckForFailures()
}).StartProbes()
group, ctx := errgroup.WithContext(context.Background())
// Listen for SIGTERM or context cancellation.
group.Go(func() error {
ch := make(chan os.Signal, 1)
signal.Notify(ch, os.Interrupt, syscall.SIGTERM)
defer signal.Stop(ch)
// wait for either the received signal or
// check if an error occurred in other
// go-routines.
var err error
select {
case <-ctx.Done():
err = ctx.Err()
case sig := <-ch:
log.Info().Msgf("Received signal %v", sig)
err = errors.New("interrupt signal")
}
if err := metricsServer.Shutdown(ctx); err != nil {
log.Err(err).Msgf("Failed to shutdown metrics server")
}
// Sometimes when the container terminates gRPC logs the following message:
// rpc error: code = Unknown desc = Error: No such container: hash of the container...
// It does not affect anything as everything will get terminated gracefully
// this time.Sleep fixes it so that the message won't be logged.
time.Sleep(1 * time.Second)
return err
})
group.Go(func() error {
wg := sync.WaitGroup{}
allServicesOk := true
worker.NewWorker(
ctx,
5*time.Second,
func() error {
if healthIssues := hc.AnyServiceUnhealthy(); !healthIssues {
if !allServicesOk {
log.Info().Msgf("All dependent services are now healthy")
}
allServicesOk = true
} else {
if allServicesOk {
log.Warn().Msgf("Waiting for all dependent services to be healthy")
}
allServicesOk = false
return nil
}
return usecases.ConfigProcessor(&wg)
},
worker.ErrorLogger,
).Run()
log.Info().Msg("Builder stopped checking for new configs")
log.Info().Msgf("Waiting for already started configs to finish processing")
wg.Wait()
log.Debug().Msgf("All spawned go-routines finished")
return nil
})
group.Go(func() error {
http.Handle("/metrics", promhttp.Handler())
return metricsServer.ListenAndServe()
})
log.Info().Msgf("Stopping Builder : %v", group.Wait())
}