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main.go
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main.go
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// Copyright 2019 Luis Guillén Civera <luisguillenc@gmail.com>. View LICENSE.
package main
import (
"fmt"
"os"
"github.com/spf13/pflag"
"github.com/luids-io/core/serverd"
"github.com/luids-io/xlist/cmd/xlistd/config"
)
//Variables for version output
var (
Program = "xlistd"
Build = "unknown"
Version = "unknown"
Revision = "unknown"
)
var (
cfg = config.Default(Program)
//behaviour
configFile = ""
version = false
help = false
debug = false
dryRun = false
)
func init() {
//config mapped params
cfg.PFlags()
//behaviour params
pflag.StringVar(&configFile, "config", configFile, "Use explicit config file.")
pflag.BoolVar(&version, "version", version, "Show version.")
pflag.BoolVarP(&help, "help", "h", help, "Show this help.")
pflag.BoolVar(&debug, "debug", debug, "Enable debug.")
pflag.BoolVar(&dryRun, "dry-run", dryRun, "Checks and construct list but not start service.")
pflag.Parse()
}
func main() {
if version {
fmt.Printf("version: %s\nrevision: %s\nbuild: %s\n", Version, Revision, Build)
os.Exit(0)
}
if help {
pflag.Usage()
os.Exit(0)
}
// load configuration
err := cfg.LoadIfFile(configFile)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
//creates logger
logger, err := createLogger(debug)
if err != nil {
fmt.Fprintln(os.Stderr, err.Error())
os.Exit(1)
}
// echo version and config
logger.Infof("%s (version: %s build: %s)", Program, Version, Build)
if debug {
logger.Debugf("configuration dump:\n%v", cfg.Dump())
}
// creates main server manager
msrv := serverd.New(Program, serverd.SetLogger(logger))
// create api services and register
apisvc, err := createAPIServices(msrv, logger)
if err != nil {
logger.Fatalf("couldn't create api registry: %v", err)
}
// create lists
lists, err := createLists(apisvc, msrv, logger)
if err != nil {
logger.Fatalf("couldn't create lists: %v", err)
}
if dryRun {
fmt.Println("configuration seems ok")
os.Exit(0)
}
// create grpc check server
gsrv, err := createServer(msrv)
if err != nil {
logger.Fatalf("couldn't create check server: %v", err)
}
// create grpc service
err = createCheckAPI(gsrv, lists, msrv, logger)
if err != nil {
logger.Fatalf("couldn't create check api: %v", err)
}
// creates health server
err = createHealthSrv(msrv, logger)
if err != nil {
logger.Fatalf("creating health server: %v", err)
}
//run server
err = msrv.Run()
if err != nil {
logger.Errorf("running server: %v", err)
}
logger.Infof("%s finished", Program)
}