-
Notifications
You must be signed in to change notification settings - Fork 0
/
main.go
110 lines (88 loc) · 2.22 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
package main
import (
"os"
"os/signal"
"sync"
"syscall"
"time"
"webchat/internal/config"
"webchat/internal/logger"
"webchat/internal/rediscache"
"webchat/internal/server"
)
var log *logger.Logger
var serviceList []*server.BaseService
var wg sync.WaitGroup
func init() {
log = logger.NewLogger("main")
}
func main() {
log.I("Starting service ...")
err := Initialize()
if err != nil {
log.E("Failed to initialize service: %v", err)
os.Exit(1)
}
err = StartService()
if err != nil {
log.E("Failed to start service: %v", err)
os.Exit(1)
}
log.E("Exiting service ...")
}
// Initialize initializes DB and updates DB tables.
func Initialize() error {
log.I("initiate the service...")
// Configuration loading
var configFileName string = "configs/config.json"
conf := config.GetInstance()
if !conf.Load(configFileName) {
log.E("Failed to load config file: %s", configFileName)
os.Exit(1)
}
log.D("Configuration has been loaded.")
// Setup log level
logger.SetupLogger(conf.Logging.Enable, conf.Logging.Level)
// Setup signal handlers for interruption and termination
sigCh := make(chan os.Signal, 1)
signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM)
go func() {
for sig := range sigCh {
if sig == syscall.SIGINT || sig == syscall.SIGTERM {
log.D("Graceful Termination Time = %d", conf.GracefulTermTimeMillis)
time.Sleep(time.Duration(conf.GracefulTermTimeMillis) * time.Millisecond)
Finalize()
os.Exit(ExitFailure)
}
}
}()
// initialize radis for QUEUE and PUBSUB
rediscache.NewRedisCache(conf.Redis)
return nil
}
// StartService starts all the component of this service.
func StartService() error {
log.I("start the service...")
conf := config.GetInstance()
// if there are more services, those can be appened here
serviceList = append(serviceList, server.NewBaseService(&server.WebchatService{}, &wg, conf))
for _, service := range serviceList {
go service.Run()
}
wg.Wait()
return nil
}
// Finalize and clean up the service
func Finalize() {
// db.Close()
rediscache.Close()
for _, service := range serviceList {
service.Stop()
}
log.E("Shutdown service...")
}
//ExitSuccess is exit code 0 and ExitFailure is exit code 1
const (
ExitSuccess = iota
ExitFailure
)