Add support for so integration

Add support for the multicloud-api
that is called by SO for instantiation.

Issue-ID: MULTICLOUD-350
Change-Id: Icf9137dae9796ac256c3319b49af6c30b275a4a9
Signed-off-by: Kiran Kamineni <kiran.k.kamineni@intel.com>

3 files changed, 395 insertions, 0 deletions

diff --git a/src/k8splugin/api/api.go b/src/k8splugin/api/api.go
index 54147d2e..4bf8d6a6 100644
--- a/src/k8splugin/api/api.go
+++ b/src/k8splugin/api/api.go
@@ -39,6 +39,13 @@ func NewRouter(defClient rb.DefinitionManager,
 	// (TODO): Fix update method
 	// instRouter.HandleFunc("/{vnfInstanceId}", UpdateHandler).Methods("PUT")
 
+	brokerHandler := brokerInstanceHandler{client: instClient}
+	instRouter.HandleFunc("/{cloud-owner}/{cloud-region}/infra_workload", brokerHandler.createHandler).Methods("POST")
+	instRouter.HandleFunc("/{cloud-owner}/{cloud-region}/infra_workload/{instID}",
+		brokerHandler.getHandler).Methods("GET")
+	instRouter.HandleFunc("/{cloud-owner}/{cloud-region}/infra_workload/{instID}",
+		brokerHandler.deleteHandler).Methods("DELETE")
+
 	//Setup resource bundle definition routes
 	if defClient == nil {
 		defClient = rb.NewDefinitionClient()
diff --git a/src/k8splugin/api/brokerhandler.go b/src/k8splugin/api/brokerhandler.go
new file mode 100644
index 00000000..28e44231
--- /dev/null
+++ b/src/k8splugin/api/brokerhandler.go
@@ -0,0 +1,164 @@
+/*
+Copyright 2018 Intel Corporation.
+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"
+
+	"k8splugin/internal/app"
+
+	"github.com/gorilla/mux"
+)
+
+// Used to store the backend implementation objects
+// Also simplifies the mocking needed for unit testing
+type brokerInstanceHandler struct {
+	// Interface that implements the Instance operations
+	client app.InstanceManager
+}
+
+type brokerRequest struct {
+	GenericVnfID                 string                 `json:"generic-vnf-id"`
+	VFModuleID                   string                 `json:"vf-module-id"`
+	VFModuleModelInvariantID     string                 `json:"vf-module-model-invariant-id"`
+	VFModuleModelVersionID       string                 `json:"vf-module-model-version-id"`
+	VFModuleModelCustomizationID string                 `json:"vf-module-model-customization-id"`
+	OOFDirectives                map[string]interface{} `json:"oof_directives"`
+	SDNCDirections               map[string]interface{} `json:"sdnc_directives"`
+	UserDirectives               map[string]interface{} `json:"user_directives"`
+	TemplateType                 string                 `json:"template_type"`
+	TemplateData                 map[string]interface{} `json:"template_data"`
+}
+
+type brokerPOSTResponse struct {
+	TemplateType     string              `json:"template_type"`
+	WorkloadID       string              `json:"workload_id"`
+	TemplateResponse map[string][]string `json:"template_response"`
+}
+
+type brokerGETResponse struct {
+	TemplateType   string `json:"template_type"`
+	WorkloadID     string `json:"workload_id"`
+	WorkloadStatus string `json:"workload_status"`
+}
+
+func (b brokerInstanceHandler) createHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	cloudRegion := vars["cloud-region"]
+
+	var req brokerRequest
+	err := json.NewDecoder(r.Body).Decode(&req)
+	switch {
+	case err == io.EOF:
+		http.Error(w, "Body empty", http.StatusBadRequest)
+		return
+	case err != nil:
+		http.Error(w, err.Error(), http.StatusUnprocessableEntity)
+		return
+	}
+
+	// Check body for expected parameters
+	if req.VFModuleModelCustomizationID == "" {
+		http.Error(w, "vf-module-model-customization-id is empty", http.StatusBadRequest)
+		return
+	}
+
+	rbName, ok := req.UserDirectives["definition-name"]
+	if !ok {
+		http.Error(w, "definition-name is missing from user-directives", http.StatusBadRequest)
+		return
+	}
+
+	rbVersion, ok := req.UserDirectives["definition-version"]
+	if !ok {
+		http.Error(w, "definition-version is missing from user-directives", http.StatusBadRequest)
+		return
+	}
+
+	profileName, ok := req.UserDirectives["profile-name"]
+	if !ok {
+		http.Error(w, "profile-name is missing from user-directives", http.StatusBadRequest)
+		return
+	}
+
+	// Setup the resource parameters for making the request
+	var instReq app.InstanceRequest
+	instReq.RBName = rbName.(string)
+	instReq.RBVersion = rbVersion.(string)
+	instReq.ProfileName = profileName.(string)
+	instReq.CloudRegion = cloudRegion
+
+	resp, err := b.client.Create(instReq)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	brokerResp := brokerPOSTResponse{
+		TemplateType:     "heat",
+		WorkloadID:       resp.ID,
+		TemplateResponse: resp.Resources,
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusCreated)
+	err = json.NewEncoder(w).Encode(brokerResp)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+}
+
+// getHandler retrieves information about an instance via the ID
+func (b brokerInstanceHandler) getHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	instanceID := vars["instID"]
+
+	resp, err := b.client.Get(instanceID)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	brokerResp := brokerGETResponse{
+		TemplateType:   "heat",
+		WorkloadID:     resp.ID,
+		WorkloadStatus: "CREATED",
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusOK)
+	err = json.NewEncoder(w).Encode(brokerResp)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+}
+
+// deleteHandler method terminates an instance via the ID
+func (b brokerInstanceHandler) deleteHandler(w http.ResponseWriter, r *http.Request) {
+	vars := mux.Vars(r)
+	instanceID := vars["instID"]
+
+	err := b.client.Delete(instanceID)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusAccepted)
+}
diff --git a/src/k8splugin/api/brokerhandler_test.go b/src/k8splugin/api/brokerhandler_test.go
new file mode 100644
index 00000000..f35a835b
--- /dev/null
+++ b/src/k8splugin/api/brokerhandler_test.go
@@ -0,0 +1,224 @@
+/*
+Copyright 2018 Intel Corporation.
+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/json"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/http/httptest"
+	"reflect"
+	"testing"
+
+	"k8splugin/internal/app"
+
+	pkgerrors "github.com/pkg/errors"
+)
+
+func TestBrokerCreateHandler(t *testing.T) {
+	testCases := []struct {
+		label        string
+		input        io.Reader
+		expected     brokerPOSTResponse
+		expectedCode int
+		instClient   *mockInstanceClient
+	}{
+		{
+			label:        "Missing body failure",
+			expectedCode: http.StatusBadRequest,
+		},
+		{
+			label:        "Invalid JSON request format",
+			input:        bytes.NewBuffer([]byte("invalid")),
+			expectedCode: http.StatusUnprocessableEntity,
+		},
+		{
+			label: "Missing parameter failure",
+			input: bytes.NewBuffer([]byte(`{
+				"vf-module-model-customization-id": "84sdfkio938",
+				"user_directives": {
+					"definition-name": "test-rbdef",
+					"definition-version": "v1"				}
+			}`)),
+			expectedCode: http.StatusBadRequest,
+		},
+		{
+			label: "Succesfully create an Instance",
+			input: bytes.NewBuffer([]byte(`{
+				"vf-module-model-customization-id": "84sdfkio938",
+				"user_directives": {
+					"definition-name": "test-rbdef",
+					"definition-version": "v1",
+					"profile-name": "profile1"
+				}
+			}`)),
+			expected: brokerPOSTResponse{
+				WorkloadID:   "HaKpys8e",
+				TemplateType: "heat",
+				TemplateResponse: map[string][]string{
+					"deployment": []string{"test-deployment"},
+					"service":    []string{"test-service"},
+				},
+			},
+			expectedCode: http.StatusCreated,
+			instClient: &mockInstanceClient{
+				items: []app.InstanceResponse{
+					{
+						ID:          "HaKpys8e",
+						RBName:      "test-rbdef",
+						RBVersion:   "v1",
+						ProfileName: "profile1",
+						CloudRegion: "region1",
+						Namespace:   "testnamespace",
+						Resources: map[string][]string{
+							"deployment": []string{"test-deployment"},
+							"service":    []string{"test-service"},
+						},
+					},
+				},
+			},
+		},
+	}
+
+	for _, testCase := range testCases {
+		t.Run(testCase.label, func(t *testing.T) {
+
+			request := httptest.NewRequest("POST", "/v1/cloudowner/cloudregion/infra_workload", testCase.input)
+			resp := executeRequest(request, NewRouter(nil, nil, testCase.instClient))
+
+			if testCase.expectedCode != resp.StatusCode {
+				body, _ := ioutil.ReadAll(resp.Body)
+				t.Log(string(body))
+				t.Fatalf("Request method returned: \n%v\n and it was expected: \n%v", resp.StatusCode, testCase.expectedCode)
+			}
+
+			if resp.StatusCode == http.StatusCreated {
+				var response brokerPOSTResponse
+				err := json.NewDecoder(resp.Body).Decode(&response)
+				if err != nil {
+					t.Fatalf("Parsing the returned response got an error (%s)", err)
+				}
+				if !reflect.DeepEqual(testCase.expected, response) {
+					t.Fatalf("TestGetHandler returned:\n result=%v\n expected=%v",
+						response, testCase.expected)
+				}
+			}
+		})
+	}
+}
+
+func TestBrokerGetHandler(t *testing.T) {
+	testCases := []struct {
+		label            string
+		input            string
+		expectedCode     int
+		expectedResponse brokerGETResponse
+		instClient       *mockInstanceClient
+	}{
+		{
+			label:        "Fail to retrieve Instance",
+			input:        "HaKpys8e",
+			expectedCode: http.StatusInternalServerError,
+			instClient: &mockInstanceClient{
+				err: pkgerrors.New("Internal error"),
+			},
+		},
+		{
+			label:        "Succesful get an Instance",
+			input:        "HaKpys8e",
+			expectedCode: http.StatusOK,
+			expectedResponse: brokerGETResponse{
+				TemplateType:   "heat",
+				WorkloadID:     "HaKpys8e",
+				WorkloadStatus: "CREATED",
+			},
+			instClient: &mockInstanceClient{
+				items: []app.InstanceResponse{
+					{
+						ID:          "HaKpys8e",
+						RBName:      "test-rbdef",
+						RBVersion:   "v1",
+						ProfileName: "profile1",
+						CloudRegion: "region1",
+						Namespace:   "testnamespace",
+						Resources: map[string][]string{
+							"deployment": []string{"test-deployment"},
+							"service":    []string{"test-service"},
+						},
+					},
+				},
+			},
+		},
+	}
+
+	for _, testCase := range testCases {
+		t.Run(testCase.label, func(t *testing.T) {
+			request := httptest.NewRequest("GET", "/v1/cloudowner/cloudregion/infra_workload/"+testCase.input, nil)
+			resp := executeRequest(request, NewRouter(nil, nil, testCase.instClient))
+
+			if testCase.expectedCode != resp.StatusCode {
+				t.Fatalf("Request method returned: %v and it was expected: %v",
+					resp.StatusCode, testCase.expectedCode)
+			}
+			if resp.StatusCode == http.StatusOK {
+				var response brokerGETResponse
+				err := json.NewDecoder(resp.Body).Decode(&response)
+				if err != nil {
+					t.Fatalf("Parsing the returned response got an error (%s)", err)
+				}
+				if !reflect.DeepEqual(testCase.expectedResponse, response) {
+					t.Fatalf("TestGetHandler returned:\n result=%v\n expected=%v",
+						response, testCase.expectedResponse)
+				}
+			}
+		})
+	}
+}
+
+func TestBrokerDeleteHandler(t *testing.T) {
+	testCases := []struct {
+		label        string
+		input        string
+		expectedCode int
+		instClient   *mockInstanceClient
+	}{
+		{
+			label:        "Fail to destroy VNF",
+			input:        "HaKpys8e",
+			expectedCode: http.StatusInternalServerError,
+			instClient: &mockInstanceClient{
+				err: pkgerrors.New("Internal error"),
+			},
+		},
+		{
+			label:        "Succesful delete a VNF",
+			input:        "HaKpys8e",
+			expectedCode: http.StatusAccepted,
+			instClient:   &mockInstanceClient{},
+		},
+	}
+
+	for _, testCase := range testCases {
+		t.Run(testCase.label, func(t *testing.T) {
+			request := httptest.NewRequest("DELETE", "/v1/cloudowner/cloudregion/infra_workload/"+testCase.input, nil)
+			resp := executeRequest(request, NewRouter(nil, nil, testCase.instClient))
+
+			if testCase.expectedCode != resp.StatusCode {
+				t.Fatalf("Request method returned: %v and it was expected: %v", resp.StatusCode, testCase.expectedCode)
+			}
+		})
+	}
+}