AdGuardHome/internal/next/cmd/cmd.go

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// Package cmd is the AdGuard Home entry point. It contains the on-disk
// configuration file utilities, signal processing logic, and so on.
//
// TODO(a.garipov): Move to the upper-level internal/.
package cmd
import (
"context"
"io/fs"
"math/rand"
"os"
"time"
"github.com/AdguardTeam/AdGuardHome/internal/next/configmgr"
"github.com/AdguardTeam/AdGuardHome/internal/version"
"github.com/AdguardTeam/golibs/log"
)
// Main is the entry point of application.
func Main(clientBuildFS fs.FS) {
// Initial Configuration
start := time.Now()
rand.Seed(start.UnixNano())
// TODO(a.garipov): Set up logging.
log.Info("starting adguard home, version %s, pid %d", version.Version(), os.Getpid())
// Web Service
// TODO(a.garipov): Use in the Web service.
_ = clientBuildFS
// TODO(a.garipov): Set up configuration file name.
const confFile = "AdGuardHome.1.yaml"
confMgr, err := configmgr.New(confFile, start)
fatalOnError(err)
web := confMgr.Web()
err = web.Start()
fatalOnError(err)
dns := confMgr.DNS()
err = dns.Start()
fatalOnError(err)
sigHdlr := newSignalHandler(
confFile,
start,
web,
dns,
)
go sigHdlr.handle()
select {}
}
// defaultTimeout is the timeout used for some operations where another timeout
// hasn't been defined yet.
const defaultTimeout = 15 * time.Second
// ctxWithDefaultTimeout is a helper function that returns a context with
// timeout set to defaultTimeout.
func ctxWithDefaultTimeout() (ctx context.Context, cancel context.CancelFunc) {
return context.WithTimeout(context.Background(), defaultTimeout)
}
// fatalOnError is a helper that exits the program with an error code if err is
// not nil. It must only be used within Main.
func fatalOnError(err error) {
if err != nil {
log.Fatal(err)
}
}