Merge pull request #29981 from ping035627/ping035627-patch-0803

api/swagger-spec/logs.json

+{
+  "swaggerVersion": "1.2",
+  "apiVersion": "",
+  "basePath": "https://10.10.10.10:6443",
+  "resourcePath": "/logs",
+  "apis": [
+   {
+    "path": "/logs/{logpath}",
+    "description": "get log files",
+    "operations": [
+     {
+      "type": "void",
+      "method": "GET",
+      "nickname": "logFileHandler",
+      "parameters": []
+     }
+    ]
+   },
+   {
+    "path": "/logs",
+    "description": "get log files",
+    "operations": [
+     {
+      "type": "void",
+      "method": "GET",
+      "nickname": "logFileListHandler",
+      "parameters": []
+     }
+    ]
+   }
+  ],
+  "models": {}
+ }

api/swagger-spec/resourceListing.json

@@ -2,6 +2,10 @@
   "swaggerVersion": "1.2",
   "apis": [
    {
+    "path": "/logs",
+    "description": "get log files"
+   },
+   {
     "path": "/version",
     "description": "git code version from which this is built"
    },

hack/update-swagger-spec.sh

@@ -104,6 +104,7 @@ curl -w "\n" -fs "${SWAGGER_API_PATH}" > "${SWAGGER_ROOT_DIR}/resourceListing.js
 curl -w "\n" -fs "${SWAGGER_API_PATH}version" > "${SWAGGER_ROOT_DIR}/version.json"
 curl -w "\n" -fs "${SWAGGER_API_PATH}api" > "${SWAGGER_ROOT_DIR}/api.json"
 curl -w "\n" -fs "${SWAGGER_API_PATH}apis" > "${SWAGGER_ROOT_DIR}/apis.json"
+curl -w "\n" -fs "${SWAGGER_API_PATH}logs" > "${SWAGGER_ROOT_DIR}/logs.json"
 kube::log::status "SUCCESS"
 
 # ex: ts=2 sw=2 et filetype=sh

pkg/apiserver/apiserver.go

@@ -208,11 +208,28 @@ func InstallVersionHandler(mux Mux, container *restful.Container) {
 	container.Add(versionWS)
 }
 
-// InstallLogsSupport registers the APIServer log support function into a mux.
-func InstallLogsSupport(mux Mux) {
-	// TODO: use restful: ws.Route(ws.GET("/logs/{logpath:*}").To(fileHandler))
+// InstallLogsSupport registers the APIServer's `/logs` into a mux.
+func InstallLogsSupport(mux Mux, container *restful.Container) {
+	// use restful: ws.Route(ws.GET("/logs/{logpath:*}").To(fileHandler))
 	// See github.com/emicklei/go-restful/blob/master/examples/restful-serve-static.go
-	mux.Handle("/logs/", http.StripPrefix("/logs/", http.FileServer(http.Dir("/var/log/"))))
+	ws := new(restful.WebService)
+	ws.Path("/logs")
+	ws.Doc("get log files")
+	ws.Route(ws.GET("/{logpath:*}").To(logFileHandler))
+	ws.Route(ws.GET("/").To(logFileListHandler))
+
+	container.Add(ws)
+}
+
+func logFileHandler(req *restful.Request, resp *restful.Response) {
+	logdir := "/var/log"
+	actual := path.Join(logdir, req.PathParameter("logpath"))
+	http.ServeFile(resp.ResponseWriter, req.Request, actual)
+}
+
+func logFileListHandler(req *restful.Request, resp *restful.Response) {
+	logdir := "/var/log"
+	http.ServeFile(resp.ResponseWriter, req.Request, logdir)
 }
 
 // TODO: needs to perform response type negotiation, this is probably the wrong way to recover panics

pkg/apiserver/apiserver_test.go

@@ -1100,6 +1100,29 @@ func TestList(t *testing.T) {
 	}
 }
 
+func TestLogs(t *testing.T) {
+	handler := handle(map[string]rest.Storage{})
+	server := httptest.NewServer(handler)
+	defer server.Close()
+	client := http.Client{}
+
+	request, err := http.NewRequest("GET", server.URL+"/logs", nil)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+
+	response, err := client.Do(request)
+	if err != nil {
+		t.Errorf("unexpected error: %v", err)
+	}
+
+	body, err := ioutil.ReadAll(response.Body)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	t.Logf("Data: %s", string(body))
+}
+
 func TestErrorList(t *testing.T) {
 	storage := map[string]rest.Storage{}
 	simpleStorage := SimpleRESTStorage{

pkg/genericapiserver/genericapiserver.go

@@ -449,7 +449,7 @@ func (s *GenericAPIServer) init(c *Config) {
 	}
 
 	if c.EnableLogsSupport {
-		apiserver.InstallLogsSupport(s.MuxHelper)
+		apiserver.InstallLogsSupport(s.MuxHelper, s.HandlerContainer)
 	}
 	if c.EnableUISupport {
 		ui.InstallSupport(s.MuxHelper, s.enableSwaggerSupport && s.enableSwaggerUI)