Add apps under composite app API

Implemented create, get and delete
handlers for the apps under composite
app.

Added unit tests

Added remove function to mockdb

Handled multipart POST request to
upload file along with app data.

Issue-ID: MULTICLOUD-998
Signed-off-by: Srivahni Chivukula <srivahni.chivukula@intel.com>
Change-Id: I25c1faba1212c0cc881c2cd599e8e66a7b93033e

1 files changed, 112 insertions, 0 deletions

diff --git a/src/orchestrator/api/composite_app_handler.go b/src/orchestrator/api/composite_app_handler.go
new file mode 100644
index 00000000..b54c488e
--- /dev/null
+++ b/src/orchestrator/api/composite_app_handler.go
@@ -0,0 +1,112 @@
+/*
+ * 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"
+
+	moduleLib "github.com/onap/multicloud-k8s/src/orchestrator/pkg/module"
+
+	"github.com/gorilla/mux"
+)
+
+// compositeAppHandler to store backend implementations objects
+// Also simplifies mocking for unit testing purposes
+type compositeAppHandler struct {
+	// Interface that implements CompositeApp operations
+	// We will set this variable with a mock interface for testing
+	client moduleLib.CompositeAppManager
+}
+
+// createHandler handles creation of the CompositeApp entry in the database
+func (h compositeAppHandler) createHandler(w http.ResponseWriter, r *http.Request) {
+	var c moduleLib.CompositeApp
+
+	err := json.NewDecoder(r.Body).Decode(&c)
+	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 c.Metadata.Name == "" {
+		http.Error(w, "Missing name in POST request", http.StatusBadRequest)
+		return
+	}
+
+	vars := mux.Vars(r)
+	projectName := vars["project-name"]
+
+	ret, err := h.client.CreateCompositeApp(c, projectName)
+	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
+	}
+}
+
+// getHandler handles GET operations on a particular CompositeApp Name
+// Returns a compositeApp
+func (h compositeAppHandler) getHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	name := vars["composite-app-name"]
+	version := vars["version"]
+	projectName := vars["project-name"]
+
+	ret, err := h.client.GetCompositeApp(name, version, projectName)
+	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
+	}
+}
+
+// deleteHandler handles DELETE operations on a particular CompositeApp Name
+func (h compositeAppHandler) deleteHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	name := vars["composite-app-name"]
+	version := vars["version"]
+	projectName := vars["project-name"]
+
+	err := h.client.DeleteCompositeApp(name, version, projectName)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusNoContent)
+}