implement identity provider and built-in oauth server

Signed-off-by: hongming <talonwan@yunify.com>

pkg/kapis/serverconfig/register.go

@@ -0,0 +1,45 @@
+/*
+ *
+ * Copyright 2020 The KubeSphere Authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * /
+ */
+
+package serverconfig
+
+import (
+	"github.com/emicklei/go-restful"
+	apiserverconfig "kubesphere.io/kubesphere/pkg/apiserver/config"
+)
+
+func AddToContainer(c *restful.Container, config *apiserverconfig.Config) error {
+	configs := &restful.WebService{}
+
+	configs.Path("/server/configs").
+		Consumes(restful.MIME_JSON).
+		Produces(restful.MIME_JSON)
+
+	// information about the authorization server are published.
+	configs.Route(configs.GET("/oauth-configz").To(func(request *restful.Request, response *restful.Response) {
+		response.WriteEntity(config.AuthenticationOptions.OAuthOptions)
+	}))
+
+	// information about the server configuration
+	configs.Route(configs.GET("/configz").To(func(request *restful.Request, response *restful.Response) {
+		response.WriteAsJson(config.ToMap())
+	}))
+
+	c.Add(configs)
+	return nil
+}