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nekoq.go
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/
nekoq.go
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package main
import (
"errors"
"flag"
"log"
"os"
"os/signal"
"github.com/meidoworks/nekoq/config"
"github.com/meidoworks/nekoq/service/naming"
"github.com/meidoworks/nekoq/service/numgen"
"github.com/pelletier/go-toml/v2"
"github.com/spf13/afero"
)
var (
configFile string
generateSampleConfig bool
)
func init() {
flag.StringVar(&configFile, "c", "nekoq.toml", "-c=nekoq.toml")
flag.BoolVar(&generateSampleConfig, "gencfg", false, "-gencfg")
flag.Parse()
}
func main() {
func() {
if generateSampleConfig {
data, err := toml.Marshal(config.Instance)
if err != nil {
panic(err)
}
fs := afero.NewOsFs()
f, err := fs.Create("nekoq.toml.example")
if err != nil {
panic(err)
}
defer f.Close()
f.Write(data)
os.Exit(1)
}
}()
var configData []byte
if len(configFile) > 0 {
fs := afero.NewOsFs()
cfgData, err := afero.ReadFile(fs, configFile)
if err != nil {
panic(err)
}
configData = cfgData
} else {
panic(errors.New("nekoq config file not specified"))
}
// new configuration file
{
if err := toml.Unmarshal(configData, &config.Instance); err != nil {
panic(err)
}
if err := config.ValidateInstanceConfiguration(); err != nil {
panic(err)
}
}
startService()
waiting()
}
func waiting() {
errc := make(chan error, 1)
sigs := make(chan os.Signal, 1)
signal.Notify(sigs, os.Interrupt)
select {
case err := <-errc:
log.Printf("failed to serve: %v", err)
case sig := <-sigs:
log.Printf("terminating: %v", sig)
}
}
func startService() {
// discovery
if err := naming.StartNaming(); err != nil {
panic(err)
}
// numgen
if numgenService, err := numgen.NewServiceNumGen(); err != nil {
panic(err)
} else if err := numgenService.StartService(); err != nil {
panic(err)
}
}