Add Controller Register API to Orchestrator

Add API allows Controllers to register
themselves as gRPC servers consumed by
the orchestrator.

Issue-ID: MULTICLOUD-995
Signed-off-by: Marcus G K Williams <marcus.williams@intel.com>
Change-Id: I75946a4af711bf2e9d65f354923db494da667e70

1 files changed, 104 insertions, 0 deletions

diff --git a/src/orchestrator/api/controllerhandler.go b/src/orchestrator/api/controllerhandler.go
new file mode 100644
index 00000000..4f98c023
--- /dev/null
+++ b/src/orchestrator/api/controllerhandler.go
@@ -0,0 +1,104 @@
+/*
+ * Copyright 2020 Intel Corporation, Inc
+ *
+ * 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 api
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+
+	"github.com/gorilla/mux"
+	moduleLib "github.com/onap/multicloud-k8s/src/orchestrator/pkg/module"
+)
+
+// Used to store backend implementations objects
+// Also simplifies mocking for unit testing purposes
+type controllerHandler struct {
+	// Interface that implements controller operations
+	// We will set this variable with a mock interface for testing
+	client moduleLib.ControllerManager
+}
+
+// Create handles creation of the controller entry in the database
+func (h controllerHandler) createHandler(w http.ResponseWriter, r *http.Request) {
+	var m moduleLib.Controller
+
+	err := json.NewDecoder(r.Body).Decode(&m)
+	switch {
+	case err == io.EOF:
+		http.Error(w, "Empty body", http.StatusBadRequest)
+		return
+	case err != nil:
+		http.Error(w, err.Error(), http.StatusUnprocessableEntity)
+		return
+	}
+
+	// Name is required.
+	if m.Name == "" {
+		http.Error(w, "Missing name in POST request", http.StatusBadRequest)
+		return
+	}
+
+	ret, err := h.client.CreateController(m)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusCreated)
+	err = json.NewEncoder(w).Encode(ret)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+}
+
+// Get handles GET operations on a particular controller Name
+// Returns a controller
+func (h controllerHandler) getHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	name := vars["controller-name"]
+
+	ret, err := h.client.GetController(name)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	err = json.NewEncoder(w).Encode(ret)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+}
+
+// Delete handles DELETE operations on a particular controller Name
+func (h controllerHandler) deleteHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	name := vars["controller-name"]
+
+	err := h.client.DeleteController(name)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusNoContent)
+}