Add basic cache control for static assets

cmd/ratchetd/main.go

@@ -44,7 +44,7 @@ func run(ctx context.Context, w io.Writer, args []string) error {
 
 	// DEPENDENCY INJECTION FOR HANDLERS
 	// Setup Logging
-	logger := logging.InitLogging(*logLevel, false)
+	logger := logging.InitLogging(*logLevel, w, false)
 	// Setup DB Connection Pool
 	db, err := rdb.OpenSqlite3DB(*dbPath)
 
@@ -101,7 +101,6 @@ func run(ctx context.Context, w io.Writer, args []string) error {
 	}
 
 	// START SERVING REQUESTS
-	slog.Debug("Herp dirp!")
 	slog.Info(fmt.Sprintf("Listening on http://%s:%s", *addr, *port))
 	//log.Fatal(http.ListenAndServe(fmt.Sprintf("%s:%s", *addr, *port), server))
 	// there is no log.Fatal equivalent. This is an approximation of the behavior

internal/logging/logging.go

@@ -1,6 +1,7 @@
 package logging
 
 import (
+	"io"
 	"log/slog"
 	"os"
 	"strings"
@@ -22,7 +23,7 @@ func parseLogLevel(levelStr string) slog.Level {
 }
 
 // InitLogggin initializes global structured logging for the entire application
-func InitLogging(level string, addSource bool) *slog.Logger {
+func InitLogging(level string, w io.Writer, addSource bool) *slog.Logger {
 	// Use os.Stderr
 	//
 	// Stderr is used for diagnostics and logging. Stdout is used for program

internal/server/middleware.go

@@ -167,3 +167,13 @@ func AuthenticateMiddleware(next http.Handler, sm *scs.SessionManager, userServi
 	})
 
 }
+
+// CacheHeaders is a middleware that provides cache-control headers to be used
+// for static assests.
+func CacheHeaders(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// TODO parameterize cache control via config
+		w.Header().Set("Cache-Control", "private, max-age=21600")
+		next.ServeHTTP(w, r)
+	})
+}

internal/server/routes.go

@@ -27,7 +27,7 @@ func (a *RatchetApp) Routes() http.Handler {
 	// Subtree pattern for static assets
 	// This line was superceded by using the embedded filesystem
 	// router.Handle("GET /static/", http.StripPrefix("/static/", fileServer))
-	router.Handle("GET /static/", http.FileServerFS(ui.Files))
+	router.Handle("GET /static/", CacheHeaders(http.FileServerFS(ui.Files)))
 
 	router.Handle("GET /ping", PingHandler())