feat: reusable rule engine to prevent memory reallocation

internal/rule/http/context.go

@@ -0,0 +1,31 @@
+package http
+
+import (
+	"context"
+	"net/http"
+
+	"forge.cadoles.com/cadoles/bouncer/internal/rule"
+)
+
+type contextKey string
+
+const (
+	contextKeyRequest  contextKey = "request"
+	contextKeyResponse contextKey = "response"
+)
+
+func WithRequest(ctx context.Context, r *http.Request) context.Context {
+	return context.WithValue(ctx, contextKeyRequest, r)
+}
+
+func WithResponse(ctx context.Context, r *http.Response) context.Context {
+	return context.WithValue(ctx, contextKeyResponse, r)
+}
+
+func ctxRequest(ctx context.Context) (*http.Request, bool) {
+	return rule.Context[*http.Request](ctx, contextKeyRequest)
+}
+
+func ctxResponse(ctx context.Context) (*http.Response, bool) {
+	return rule.Context[*http.Response](ctx, contextKeyResponse)
+}