1 files changed, 224 insertions, 0 deletions
diff --git a/src/orchestrator/api/apphandler.go b/src/orchestrator/api/apphandler.go
new file mode 100644
index 00000000..3cd2dbc8
--- /dev/null
+++ b/src/orchestrator/api/apphandler.go
@@ -0,0 +1,224 @@
+/*
+ * 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 (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"io"
+	"io/ioutil"
+	"mime"
+	"mime/multipart"
+	"net/http"
+	"net/textproto"
+
+	moduleLib "github.com/onap/multicloud-k8s/src/orchestrator/pkg/module"
+	"github.com/onap/multicloud-k8s/src/orchestrator/utils"
+
+	"github.com/gorilla/mux"
+)
+
+// appHandler to store backend implementations objects
+// Also simplifies mocking for unit testing purposes
+type appHandler struct {
+	// Interface that implements App operations
+	// We will set this variable with a mock interface for testing
+	client moduleLib.AppManager
+}
+
+// createAppHandler handles creation of the App entry in the database
+// This is a multipart handler. See following example curl request
+// curl -X POST http://localhost:9015/v2/projects/sampleProject/composite-apps/sampleCompositeApp/v1/apps \
+// -F "metadata={\"metadata\":{\"name\":\"app\",\"description\":\"sample app\",\"UserData1\":\"data1\",\"UserData2\":\"data2\"}};type=application/json" \
+// -F file=@/pathToFile
+
+func (h appHandler) createAppHandler(w http.ResponseWriter, r *http.Request) {
+	var a moduleLib.App
+	var ac moduleLib.AppContent
+
+	// Implemenation using multipart form
+	// Set Max size to 16mb here
+	err := r.ParseMultipartForm(16777216)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusUnprocessableEntity)
+		return
+	}
+
+	jsn := bytes.NewBuffer([]byte(r.FormValue("metadata")))
+	err = json.NewDecoder(jsn).Decode(&a)
+	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 a.Metadata.Name == "" {
+		http.Error(w, "Missing name in POST request", http.StatusBadRequest)
+		return
+	}
+
+	//Read the file section and ignore the header
+	file, _, err := r.FormFile("file")
+	if err != nil {
+		http.Error(w, "Unable to process file", http.StatusUnprocessableEntity)
+		return
+	}
+
+	defer file.Close()
+
+	//Convert the file content to base64 for storage
+	content, err := ioutil.ReadAll(file)
+	if err != nil {
+		http.Error(w, "Unable to read file", http.StatusUnprocessableEntity)
+		return
+	}
+
+	err = utils.IsTarGz(bytes.NewBuffer(content))
+	if err != nil {
+		http.Error(w, "Error in file format", http.StatusUnprocessableEntity)
+		return
+	}
+
+	ac.FileContent = base64.StdEncoding.EncodeToString(content)
+
+	vars := mux.Vars(r)
+	projectName := vars["project-name"]
+	compositeAppName := vars["composite-app-name"]
+	compositeAppVersion := vars["version"]
+
+	ret, err := h.client.CreateApp(a, ac, projectName, compositeAppName, compositeAppVersion)
+	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
+	}
+}
+
+// getAppHandler handles GET operations on a particular App Name
+// Returns an app
+func (h appHandler) getAppHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	projectName := vars["project-name"]
+	compositeAppName := vars["composite-app-name"]
+	compositeAppVersion := vars["version"]
+	name := vars["app-name"]
+
+	accepted, _, err := mime.ParseMediaType(r.Header.Get("Accept"))
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusNotAcceptable)
+		return
+	}
+
+	var retApp moduleLib.App
+	var retAppContent moduleLib.AppContent
+
+	retApp, err = h.client.GetApp(name, projectName, compositeAppName, compositeAppVersion)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	retAppContent, err = h.client.GetAppContent(name, projectName, compositeAppName, compositeAppVersion)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	switch accepted {
+	case "multipart/form-data":
+		mpw := multipart.NewWriter(w)
+		w.Header().Set("Content-Type", mpw.FormDataContentType())
+		w.WriteHeader(http.StatusOK)
+		pw, err := mpw.CreatePart(textproto.MIMEHeader{"Content-Type": {"application/json"}, "Content-Disposition": {"form-data; name=metadata"}})
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		if err := json.NewEncoder(pw).Encode(retApp); err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		pw, err = mpw.CreatePart(textproto.MIMEHeader{"Content-Type": {"application/octet-stream"}, "Content-Disposition": {"form-data; name=file; filename=fileContent"}})
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		fcBytes, err := base64.StdEncoding.DecodeString(retAppContent.FileContent)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		_, err = pw.Write(fcBytes)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	case "application/json":
+		w.Header().Set("Content-Type", "application/json")
+		w.WriteHeader(http.StatusOK)
+		err = json.NewEncoder(w).Encode(retApp)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	case "application/octet-stream":
+		w.Header().Set("Content-Type", "application/octet-stream")
+		w.WriteHeader(http.StatusOK)
+		fcBytes, err := base64.StdEncoding.DecodeString(retAppContent.FileContent)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		_, err = w.Write(fcBytes)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+	default:
+		http.Error(w, "set Accept: multipart/form-data, application/json or application/octet-stream", http.StatusMultipleChoices)
+		return
+	}
+}
+
+// deleteAppHandler handles DELETE operations on a particular App Name
+func (h appHandler) deleteAppHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	projectName := vars["project-name"]
+	compositeAppName := vars["composite-app-name"]
+	compositeAppVersion := vars["version"]
+	name := vars["app-name"]
+
+	err := h.client.DeleteApp(name, projectName, compositeAppName, compositeAppVersion)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusNoContent)
+}