pgx/pgproto3/example/pgfortune/main.go

52 lines
1.0 KiB
Go

package main
import (
"flag"
"fmt"
"log"
"net"
"os"
"os/exec"
)
var options struct {
listenAddress string
responseCommand string
}
func main() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, "usage: %s [options]\n", os.Args[0])
flag.PrintDefaults()
}
flag.StringVar(&options.listenAddress, "listen", "127.0.0.1:15432", "Listen address")
flag.StringVar(&options.responseCommand, "response-command", "fortune | cowsay -f elephant", "Command to execute to generate query response")
flag.Parse()
ln, err := net.Listen("tcp", options.listenAddress)
if err != nil {
log.Fatal(err)
}
log.Println("Listening on", ln.Addr())
for {
conn, err := ln.Accept()
if err != nil {
log.Fatal(err)
}
log.Println("Accepted connection from", conn.RemoteAddr())
b := NewPgFortuneBackend(conn, func() ([]byte, error) {
return exec.Command("sh", "-c", options.responseCommand).CombinedOutput()
})
go func() {
err := b.Run()
if err != nil {
log.Println(err)
}
log.Println("Closed connection from", conn.RemoteAddr())
}()
}
}