Redirect common Go package URLs to pkg.go.dev

Signed-off-by: Jason Hall <jasonhall@redhat.com>

Author: imjasonh

apps/k8s-io/configmap-nginx.yaml

@@ -54,6 +54,11 @@ data:
             ';
           }
 
+          # Redirect go import paths to Go package documentation.
+          if ($repo ~ "api|apimachinery|client-go|kubernetes") {
+            return 301 https://pkg.go.dev/k8s.io/$repo/$subpath;
+          }
+
           # Default to redirecting to the "real" site.
           return 301 https://kubernetes.io$request_uri;
         }

apps/k8s-io/test.py

@@ -149,6 +149,19 @@ def test_protocol_upgrade(self):
                     'http://' + url + path,
                     'https://' + url + path, 301)
 
+    def test_godoc_redirect(self):
+        self.assert_scheme_redirect(
+                'http://k8s.io/kubernetes',
+                'https://k8s.io/kubernetes', 301)
+        for repo in ('api', 'apimachinery', 'client-go', 'kubernetes'):
+          self.assert_scheme_redirect(
+                  'https://k8s.io/%s' % repo,
+                  'https://pkg.go.dev/k8s.io/%s' % repo, 301)
+        # Sub-paths also work.
+        self.assert_scheme_redirect(
+                'https://k8s.io/api/core/v1',
+                'https://pkg.go.dev/k8s.io/api/core/v1', 301)
+
     def test_go_get(self):
         self.assert_scheme_redirect(
                 'http://k8s.io/kubernetes?go-get=1',