func Run() {
fmt.Printf("Pandora v0.1.1\n")
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage of Pandora: pandora [<config_filename>]\n"+
"<config_filename> is './load.json' by default\n")
flag.PrintDefaults()
}
example := flag.Bool("example", false, "print example config to STDOUT and exit")
flag.Parse()
if *example {
fmt.Printf(exampleConfig)
return
}
configFileName := "./load.json"
if len(flag.Args()) > 0 {
configFileName = flag.Args()[0]
}
log.Printf("Reading config from '%s'...\n", configFileName)
jsonDoc, err := ioutil.ReadFile(configFileName)
if err != nil {
log.Printf("Could not read config from file: %s", err)
return
}
cfg, err := config.NewGlobalFromJSON(jsonDoc)
if err != nil {
log.Printf("Could not unmarshal config from json: %s", err)
return
}
pandora := engine.New(cfg)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
promise := utils.Promise(func() error { return pandora.Serve(ctx) })
select {
case <-utils.NotifyInterrupt():
log.Print("Interrupting by signal, trying to stop")
cancel()
select {
case err = <-promise:
case <-time.After(time.Second * 5):
err = fmt.Errorf("timeout exceeded")
}
case err = <-promise:
}
if err != nil {
log.Fatal(err)
}
}
func Run() {
fmt.Printf("Pandora v%s\n", Version)
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "Usage of Pandora: pandora [<config_filename>]\n"+
"<config_filename> is './load.json' by default\n")
flag.PrintDefaults()
}
example := flag.Bool("example", false, "print example config to STDOUT and exit")
cpuprofile := flag.String("cpuprofile", "", "write cpu profile to file")
memprofile := flag.String("memprofile", "", "write memory profile to this file")
expvarHttp := flag.Bool("expvar", false, "start HTTP server with monitoring variables")
flag.Parse()
if *example {
fmt.Printf(exampleConfig)
return
}
if *expvarHttp {
go http.ListenAndServe(":1234", nil)
}
configFileName := "./load.json"
if len(flag.Args()) > 0 {
configFileName = flag.Args()[0]
}
log.Printf("Reading config from '%s'...\n", configFileName)
jsonDoc, err := ioutil.ReadFile(configFileName)
if err != nil {
log.Printf("Could not read config from file: %s", err)
return
}
cfg, err := config.NewGlobalFromJSON(jsonDoc)
if err != nil {
log.Printf("Could not unmarshal config from json: %s", err)
return
}
if *cpuprofile != "" {
f, err := os.Create(*cpuprofile)
if err != nil {
log.Fatal(err)
}
pprof.StartCPUProfile(f)
defer pprof.StopCPUProfile()
}
if *memprofile != "" {
defer func() {
f, err := os.Create(*memprofile)
if err != nil {
log.Fatal(err)
}
pprof.WriteHeapProfile(f)
f.Close()
}()
}
pandora := engine.New(cfg)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
promise := utils.Promise(func() error { return pandora.Serve(ctx) })
select {
case <-utils.NotifyInterrupt():
log.Print("Interrupting by signal, trying to stop")
cancel()
select {
case err = <-promise:
case <-time.After(time.Second * 5):
err = fmt.Errorf("timeout exceeded")
}
case err = <-promise:
}
if err != nil {
log.Fatal(err)
}
}
