2 files changed, 44 insertions, 0 deletions
diff --git a/internal/headers.go b/internal/headers.go
new file mode 100644
index 0000000..47aa2cc
--- /dev/null
+++ b/internal/headers.go
@@ -0,0 +1,20 @@
+package internal
+
+import (
+	"net/http"
+
+	"github.com/TecharoHQ/anubis"
+)
+
+// UnchangingCache sets the Cache-Control header to cache a response for 1 year if
+// and only if the application is compiled in "release" mode by Docker.
+func UnchangingCache(h http.Handler) http.Handler {
+	if anubis.Version == "devel" {
+		return h
+	}
+
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Cache-Control", "public, max-age=31536000")
+		h.ServeHTTP(w, r)
+	})
+}
diff --git a/internal/slog.go b/internal/slog.go
new file mode 100644
index 0000000..115e1d2
--- /dev/null
+++ b/internal/slog.go
@@ -0,0 +1,24 @@
+package internal
+
+import (
+	"fmt"
+	"log/slog"
+	"os"
+)
+
+func InitSlog(level string) {
+	var programLevel slog.Level
+	if err := (&programLevel).UnmarshalText([]byte(level)); err != nil {
+		fmt.Fprintf(os.Stderr, "invalid log level %s: %v, using info\n", level, err)
+		programLevel = slog.LevelInfo
+	}
+
+	leveler := &slog.LevelVar{}
+	leveler.Set(programLevel)
+
+	h := slog.NewJSONHandler(os.Stderr, &slog.HandlerOptions{
+		AddSource: true,
+		Level:     leveler,
+	})
+	slog.SetDefault(slog.New(h))
+}