forked from shogo82148/rdsmysql
/
main.go
103 lines (90 loc) · 1.77 KB
/
main.go
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package main
import (
"fmt"
"log"
"os"
"os/exec"
"os/signal"
"path/filepath"
"sync"
"syscall"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/shogo82148/rdsmysql/internal/config"
)
func main() {
conf, err := config.Parse(os.Args[1:])
if err != nil {
log.Fatal(err)
}
os.Exit(run(conf))
}
func run(c *config.Config) int {
if c.Version {
showVersion()
return 0
}
dir, err := os.MkdirTemp("", "rdsmysql-")
if err != nil {
log.Fatal(err)
}
defer os.RemoveAll(dir)
conf := aws.NewConfig()
sess := session.Must(session.NewSessionWithOptions(session.Options{
Config: *conf,
SharedConfigState: session.SharedConfigEnable,
}))
err = config.Generate(sess, dir, c)
if err != nil {
log.Fatal(err)
}
mysql, err := exec.LookPath("mysql")
if err != nil {
log.Fatal(err)
}
args := append([]string{fmt.Sprintf("--defaults-extra-file=%s", filepath.Join(dir, "my.conf"))}, c.Args...)
cmd := exec.Command(mysql, args...)
cmd.Stdin = os.Stdin
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Start(); err != nil {
log.Fatal(err)
}
var wg sync.WaitGroup
done := make(chan struct{})
// transfer signals.
wg.Add(1)
go func() {
defer wg.Done()
sig := make(chan os.Signal, 1)
signal.Notify(sig, syscall.SIGHUP, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT)
for {
select {
case s := <-sig:
cmd.Process.Signal(s)
case <-done:
return
}
}
}()
// password rotation
wg.Add(1)
go func() {
defer wg.Done()
ticker := time.NewTicker(5 * time.Minute)
defer ticker.Stop()
for {
select {
case <-ticker.C:
config.Generate(sess, dir, c)
case <-done:
return
}
}
}()
_ = cmd.Wait()
close(done)
wg.Wait()
return cmd.ProcessState.ExitCode()
}