You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
96 lines
1.6 KiB
Go
96 lines
1.6 KiB
Go
package main
|
|
|
|
import (
|
|
"context"
|
|
_ "embed"
|
|
"fmt"
|
|
"log"
|
|
"net"
|
|
"net/http"
|
|
"os"
|
|
"os/signal"
|
|
"time"
|
|
)
|
|
|
|
var log_error = log.New(os.Stderr, "", 0)
|
|
var log_info = log.New(os.Stdout, "", 0)
|
|
|
|
func bail(status int, t string, args ...interface{}) {
|
|
if status != nil {
|
|
shutdown(fmt.Errorf(t, args...))
|
|
} else {
|
|
log_info.Printf
|
|
}
|
|
out := log_info
|
|
if status != 0 {
|
|
out = log_error
|
|
}
|
|
out.Printf(t+"\n", args...)
|
|
shutdown(status)
|
|
}
|
|
|
|
//go:embed usage
|
|
var usage string
|
|
|
|
type options struct {
|
|
Path string
|
|
}
|
|
|
|
func run(o options) error {
|
|
addr, err := net.ResolveUnixAddr("unix", o.Path)
|
|
if err != nil {
|
|
return fmt.Errorf("bad listen address: %w", err)
|
|
}
|
|
|
|
l, err := net.ListenUnix("unix", addr)
|
|
if err != nil {
|
|
return fmt.Errorf("unable to open unix socket: %w", err)
|
|
}
|
|
onShutdown(func() { l.Close() })
|
|
|
|
server := http.Server{
|
|
Handler: new(handler),
|
|
}
|
|
onShutdown(func() { server.Shutdown(nil) })
|
|
|
|
// ??
|
|
start := time.Now()
|
|
err = server.Serve(l)
|
|
if err != nil {
|
|
// I dunno how to check for the right error, offhand
|
|
if time.Since(start) < time.Second {
|
|
return fmt.Errorf("unable to start server: %v", err)
|
|
}
|
|
}
|
|
log_info.Printf("http serve result: %v", err)
|
|
return nil
|
|
}
|
|
|
|
func sigCancel(ctx context.Context) context.Context {
|
|
c := make(chan os.Signal, 1)
|
|
signal.Notify(c, os.Interrupt)
|
|
|
|
ctx, cancel := context.WithCancel(ctx)
|
|
onShutdown(cancel)
|
|
go func() {
|
|
<-c
|
|
shutdown()
|
|
}()
|
|
return ctx
|
|
}
|
|
|
|
func main() {
|
|
ctx := context.Background()
|
|
ctx = sigCancel(ctx)
|
|
|
|
if len(os.Args) != 2 {
|
|
bail(1, usage)
|
|
}
|
|
|
|
var o options
|
|
o.Path = os.Args[1]
|
|
if err := run(o); err != nil {
|
|
bail(1, err.Error())
|
|
}
|
|
}
|