isle/go/cmd/entrypoint/main.go

70 lines
1.3 KiB
Go

package main
import (
"context"
"os"
"os/signal"
"path/filepath"
"syscall"
"dev.mediocregopher.com/mediocre-go-lib.git/mctx"
"dev.mediocregopher.com/mediocre-go-lib.git/mlog"
)
func getAppDirPath() string {
appDirPath := os.Getenv("APPDIR")
if appDirPath == "" {
appDirPath = "."
}
return appDirPath
}
var (
envAppDirPath = getAppDirPath()
envBinDirPath = filepath.Join(envAppDirPath, "bin")
)
func binPath(name string) string {
return filepath.Join(envBinDirPath, name)
}
func main() {
logger := mlog.NewLogger(nil)
defer logger.Close()
ctx, cancel := context.WithCancel(context.Background())
signalCh := make(chan os.Signal, 2)
signal.Notify(signalCh, syscall.SIGINT, syscall.SIGTERM)
go func() {
sig := <-signalCh
cancel()
ctx := mctx.Annotate(ctx, "signal", sig.String())
logger.Info(ctx, "got signal, exiting gracefully")
sig = <-signalCh
ctx = mctx.Annotate(ctx, "signal", sig.String())
logger.FatalString(ctx, "second signal received, force quitting, there may be zombie children left behind, good luck!")
}()
err := subCmdCtx{
Context: ctx,
args: os.Args[1:],
}.doSubCmd(
subCmdDaemon,
subCmdGarage,
subCmdHost,
subCmdNebula,
subCmdNetwork,
subCmdStorage,
subCmdVersion,
)
if err != nil {
logger.Fatal(ctx, "error running command", err)
}
}