88 lines
2.0 KiB
Go
88 lines
2.0 KiB
Go
package main
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import (
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"context"
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"errors"
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"log/slog"
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"net/http"
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"os"
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"os/signal"
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"syscall"
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"ipecho/internal/buildinfo"
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"ipecho/internal/clientip"
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"ipecho/internal/config"
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"ipecho/internal/httpapi"
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)
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func main() {
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cfg, err := config.Load()
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if err != nil {
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logger := slog.New(slog.NewTextHandler(os.Stderr, nil))
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logger.Error("invalid configuration", "error", err)
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os.Exit(1)
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}
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logger := newLogger(cfg)
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server := &http.Server{
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Addr: cfg.Addr,
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Handler: httpapi.NewWithLogger(clientip.Resolver{
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TrustProxyHeaders: cfg.TrustProxyHeaders,
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TrustedProxies: cfg.TrustedProxyCIDRs,
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}, logger),
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ReadHeaderTimeout: cfg.ReadHeaderTimeout,
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ReadTimeout: cfg.ReadTimeout,
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WriteTimeout: cfg.WriteTimeout,
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IdleTimeout: cfg.IdleTimeout,
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MaxHeaderBytes: cfg.MaxHeaderBytes,
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}
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ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
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defer stop()
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serverErrors := make(chan error, 1)
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go func() {
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logger.Info("server started",
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"addr", cfg.Addr,
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"trust_proxy_headers", cfg.TrustProxyHeaders,
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"trusted_proxy_cidrs", cfg.TrustedProxyCIDRs,
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"version", buildinfo.Version,
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"commit", buildinfo.Commit,
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"date", buildinfo.Date,
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)
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serverErrors <- server.ListenAndServe()
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}()
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select {
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case <-ctx.Done():
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logger.Info("server stopping")
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case err := <-serverErrors:
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if !errors.Is(err, http.ErrServerClosed) {
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logger.Error("server stopped unexpectedly", "error", err)
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os.Exit(1)
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}
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return
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}
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shutdownCtx, cancel := context.WithTimeout(context.Background(), cfg.ShutdownTimeout)
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defer cancel()
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if err := server.Shutdown(shutdownCtx); err != nil {
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logger.Error("server shutdown failed", "error", err)
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os.Exit(1)
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}
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}
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func newLogger(cfg config.Config) *slog.Logger {
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options := &slog.HandlerOptions{
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Level: cfg.LogLevel,
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}
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if cfg.LogFormat == "json" {
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return slog.New(slog.NewJSONHandler(os.Stdout, options))
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}
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return slog.New(slog.NewTextHandler(os.Stdout, options))
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}
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