feat: add registry k8s manifest fallback

internal/proxy/handler_test.go

@@ -0,0 +1,55 @@
+package proxy
+
+import (
+	"bytes"
+	"net/url"
+	"strings"
+	"testing"
+
+	"github.com/sirupsen/logrus"
+
+	"github.com/any-hub/any-hub/internal/config"
+	"github.com/any-hub/any-hub/internal/hubmodule"
+	"github.com/any-hub/any-hub/internal/server"
+)
+
+func TestRegistryK8sManifestFallbackLogsStructuredEvent(t *testing.T) {
+	buf := new(bytes.Buffer)
+	logger := logrus.New()
+	logger.SetOutput(buf)
+	logger.SetFormatter(&logrus.JSONFormatter{})
+
+	upstreamURL, err := url.Parse("http://registry.k8s.io")
+	if err != nil {
+		t.Fatalf("parse upstream url: %v", err)
+	}
+
+	h := NewHandler(nil, logger, nil)
+	route := &server.HubRoute{
+		Config: config.HubConfig{
+			Name:   "docker",
+			Domain: "k8s.hub.local",
+			Type:   "docker",
+		},
+		Module:      hubmodule.ModuleMetadata{Key: "docker"},
+		UpstreamURL: upstreamURL,
+	}
+
+	h.logRegistryK8sFallback(route, "req-1", "/v2/coredns/manifests/v1.13.1", "/v2/coredns/coredns/manifests/v1.13.1", 404, "GET")
+
+	output := buf.String()
+	for _, want := range []string{
+		"proxy_registry_k8s_fallback",
+		`"hub":"docker"`,
+		`"domain":"k8s.hub.local"`,
+		`"upstream_host":"registry.k8s.io"`,
+		`"original_path":"/v2/coredns/manifests/v1.13.1"`,
+		`"fallback_path":"/v2/coredns/coredns/manifests/v1.13.1"`,
+		`"original_status":404`,
+		`"method":"GET"`,
+	} {
+		if !strings.Contains(output, want) {
+			t.Fatalf("expected log output to contain %s, got %s", want, output)
+		}
+	}
+}