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main.go
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main.go
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package main
import (
"fmt"
"log"
"net"
"os"
"os/signal"
"strconv"
"sync"
"syscall"
)
var (
notifier sync.WaitGroup
dbProtect sync.RWMutex
databases map[int]*Database
firstDatabase *Database
tcplistener *net.TCPListener
quit chan struct{}
needAuth bool
cfg *config
)
func getDataBase(index int) *Database {
dbProtect.RLock()
db, ok := databases[index]
if ok {
dbProtect.RUnlock()
return db
}
dbProtect.RUnlock()
dbProtect.Lock()
defer dbProtect.Unlock()
db, ok = databases[index]
if ok {
dbProtect.RUnlock()
return db
}
tmp := CreateDatabase(cfg.ShardCount)
databases[index] = tmp
return tmp
}
func main() {
sigs := make(chan os.Signal, 1)
quit = make(chan struct{}, 1)
var err error
cfg, err = loadConfig()
if err != nil {
cfg = &defConfig
}
databases = make(map[int]*Database)
firstDatabase = CreateDatabase(cfg.ShardCount)
databases[0] = firstDatabase
needAuth = cfg.AuthPass != ""
listener, err := net.Listen("tcp", ":"+strconv.Itoa(cfg.Port))
if err != nil {
log.Fatal("Listener was not created")
return
}
var ok bool
tcplistener, ok = listener.(*net.TCPListener)
if !ok {
log.Fatal("Invalid listener was created for server")
}
if cfg.StartAsREST {
fmt.Println("Started sa REST/HTTP server on port " + strconv.Itoa(cfg.Port))
go startHttpListener()
} else {
fmt.Println("Started sa RESP server on port " + strconv.Itoa(cfg.Port))
go startRESPListener()
}
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
notifier.Add(1)
go func() {
sig := <-sigs
fmt.Println("Stop signal was received")
fmt.Println(sig)
notifier.Done()
listener.Close()
close(quit)
}()
notifier.Wait()
fmt.Println("exiting")
for _, db := range databases {
db.Close()
}
}