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.
101 lines
2.2 KiB
Go
101 lines
2.2 KiB
Go
package main
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"flag"
|
|
"fmt"
|
|
"io"
|
|
"log/slog"
|
|
"net/http"
|
|
"os"
|
|
"os/signal"
|
|
"syscall"
|
|
"time"
|
|
|
|
"git.runcible.io/learning/pulley/internal/logging"
|
|
)
|
|
|
|
const Version = "1.0.0"
|
|
|
|
type config struct {
|
|
port int
|
|
env string
|
|
logLevel string
|
|
}
|
|
|
|
type application struct {
|
|
config config
|
|
logger *slog.Logger
|
|
}
|
|
|
|
func run(ctx context.Context, w io.Writer, args []string) error {
|
|
var cfg config
|
|
|
|
flagSet := flag.NewFlagSet(args[0], flag.ExitOnError)
|
|
|
|
flagSet.IntVar(&cfg.port, "port", 5002, "API server port")
|
|
flagSet.StringVar(&cfg.env, "env", "development", "Environment (development|staging|production)")
|
|
flagSet.StringVar(&cfg.logLevel, "log-level", "INFO", "Logging Level (INFO|DEBUG|WARN|ERROR)")
|
|
|
|
if err := flagSet.Parse(args[1:]); err != nil {
|
|
return err
|
|
}
|
|
|
|
logger := logging.InitLogging(cfg.logLevel, w, true)
|
|
app := application{config: cfg, logger: logger}
|
|
|
|
mux := http.NewServeMux()
|
|
mux.HandleFunc("/v1/healthcheck", app.HealthCheckHandler)
|
|
|
|
srv := &http.Server{
|
|
Addr: fmt.Sprintf("%s:%d", "0.0.0.0", app.config.port),
|
|
ErrorLog: slog.NewLogLogger(app.logger.Handler(), slog.LevelError),
|
|
IdleTimeout: time.Minute,
|
|
ReadTimeout: 5 * time.Second,
|
|
WriteTimeout: 10 * time.Second,
|
|
MaxHeaderBytes: 524288, // 0.5 mb
|
|
Handler: mux,
|
|
}
|
|
|
|
slog.Info(fmt.Sprintf("Listening on http://%s", srv.Addr))
|
|
|
|
defer func() {
|
|
slog.Debug("Must have hit a graceful shutdown")
|
|
}()
|
|
|
|
go func() {
|
|
if err := srv.ListenAndServe(); !errors.Is(err, http.ErrServerClosed) {
|
|
slog.Error(err.Error())
|
|
os.Exit(1)
|
|
slog.Info("Stopped serving connections")
|
|
}
|
|
}()
|
|
|
|
// Handle graceful shutdown
|
|
sigChan := make(chan os.Signal, 1)
|
|
signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
|
|
// Block until signal is received
|
|
<-sigChan
|
|
|
|
shutdownCtx, shutdownRelease := context.WithTimeout(ctx, 10*time.Second)
|
|
defer shutdownRelease()
|
|
|
|
if err := srv.Shutdown(shutdownCtx); err != nil {
|
|
slog.Error("Failed to close within context timeout. Forcing server close.")
|
|
srv.Close()
|
|
return err
|
|
}
|
|
return nil
|
|
|
|
}
|
|
|
|
func main() {
|
|
ctx := context.Background()
|
|
if err := run(ctx, os.Stdout, os.Args); err != nil {
|
|
slog.Error(err.Error())
|
|
os.Exit(1)
|
|
}
|
|
|
|
}
|