Add query parameters support to instance API

Add support for query parameters to find instances
with rb-name, rb-version, profile-name as query parameters
eg: curl IP:PORT/v1/instance?rb-name=test&rb-version=v1

Issue-ID: MULTICLOUD-662
Change-Id: If68c87885c8b8dd097cbb3860e8c7320310a6ef7
Signed-off-by: Kiran Kamineni <kiran.k.kamineni@intel.com>

4 files changed, 61 insertions, 22 deletions

diff --git a/src/k8splugin/api/api.go b/src/k8splugin/api/api.go
index 4308db4f..726bd116 100644
--- a/src/k8splugin/api/api.go
+++ b/src/k8splugin/api/api.go
@@ -39,6 +39,12 @@ func NewRouter(defClient rb.DefinitionManager,
 	instRouter := router.PathPrefix("/v1").Subrouter()
 	instRouter.HandleFunc("/instance", instHandler.createHandler).Methods("POST")
 	instRouter.HandleFunc("/instance", instHandler.listHandler).Methods("GET")
+	// Match rb-names, versions or profiles
+	instRouter.HandleFunc("/instance", instHandler.listHandler).
+		Queries("rb-name", "{rb-name}",
+			"rb-version", "{rb-version}",
+			"profile-name", "{profile-name}").Methods("GET")
+
 	instRouter.HandleFunc("/instance/{instID}", instHandler.getHandler).Methods("GET")
 	instRouter.HandleFunc("/instance/{instID}", instHandler.deleteHandler).Methods("DELETE")
 	// (TODO): Fix update method
diff --git a/src/k8splugin/api/brokerhandler_test.go b/src/k8splugin/api/brokerhandler_test.go
index 319c64e7..8ef5e184 100644
--- a/src/k8splugin/api/brokerhandler_test.go
+++ b/src/k8splugin/api/brokerhandler_test.go
@@ -285,7 +285,7 @@ func TestBrokerFindHandler(t *testing.T) {
 				},
 			},
 			instClient: &mockInstanceClient{
-				items: []app.InstanceResponse{
+				miniitems: []app.InstanceMiniResponse{
 					{
 						ID: "HaKpys8e",
 						Request: app.InstanceRequest{
@@ -295,22 +295,6 @@ func TestBrokerFindHandler(t *testing.T) {
 							CloudRegion: "region1",
 						},
 						Namespace: "testnamespace",
-						Resources: []helm.KubernetesResource{
-							{
-								GVK: schema.GroupVersionKind{
-									Group:   "apps",
-									Version: "v1",
-									Kind:    "Deployment"},
-								Name: "test-deployment",
-							},
-							{
-								GVK: schema.GroupVersionKind{
-									Group:   "",
-									Version: "v1",
-									Kind:    "Service"},
-								Name: "test-service",
-							},
-						},
 					},
 				},
 			},
diff --git a/src/k8splugin/api/instancehandler.go b/src/k8splugin/api/instancehandler.go
index 3ec055bc..be8e64fa 100644
--- a/src/k8splugin/api/instancehandler.go
+++ b/src/k8splugin/api/instancehandler.go
@@ -106,10 +106,16 @@ func (i instanceHandler) getHandler(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-// getHandler retrieves information about an instance via the ID
+// listHandler retrieves information about an instance via the ID
 func (i instanceHandler) listHandler(w http.ResponseWriter, r *http.Request) {
 
-	resp, err := i.client.List()
+	//If parameters are not provided, they are sent as empty strings
+	//Which will list all instances
+	rbName := r.FormValue("rb-name")
+	rbVersion := r.FormValue("rb-version")
+	ProfileName := r.FormValue("profile-name")
+
+	resp, err := i.client.List(rbName, rbVersion, ProfileName)
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
 		return
diff --git a/src/k8splugin/api/instancehandler_test.go b/src/k8splugin/api/instancehandler_test.go
index 83fa3d2b..418054ec 100644
--- a/src/k8splugin/api/instancehandler_test.go
+++ b/src/k8splugin/api/instancehandler_test.go
@@ -60,7 +60,7 @@ func (m *mockInstanceClient) Get(id string) (app.InstanceResponse, error) {
 	return m.items[0], nil
 }
 
-func (m *mockInstanceClient) List() ([]app.InstanceMiniResponse, error) {
+func (m *mockInstanceClient) List(rbname, rbversion, profilename string) ([]app.InstanceMiniResponse, error) {
 	if m.err != nil {
 		return []app.InstanceMiniResponse{}, m.err
 	}
@@ -68,12 +68,12 @@ func (m *mockInstanceClient) List() ([]app.InstanceMiniResponse, error) {
 	return m.miniitems, nil
 }
 
-func (m *mockInstanceClient) Find(rbName string, ver string, profile string, labelKeys map[string]string) ([]app.InstanceResponse, error) {
+func (m *mockInstanceClient) Find(rbName string, ver string, profile string, labelKeys map[string]string) ([]app.InstanceMiniResponse, error) {
 	if m.err != nil {
 		return nil, m.err
 	}
 
-	return m.items, nil
+	return m.miniitems, nil
 }
 
 func (m *mockInstanceClient) Delete(id string) error {
@@ -312,6 +312,8 @@ func TestInstanceListHandler(t *testing.T) {
 		label            string
 		input            string
 		expectedCode     int
+		queryParams      bool
+		queryParamsMap   map[string]string
 		expectedResponse []app.InstanceMiniResponse
 		instClient       *mockInstanceClient
 	}{
@@ -373,11 +375,52 @@ func TestInstanceListHandler(t *testing.T) {
 				},
 			},
 		},
+		{
+			label:       "List Instances Based on Query Parameters",
+			queryParams: true,
+			queryParamsMap: map[string]string{
+				"rb-name": "test-rbdef1",
+			},
+			expectedCode: http.StatusOK,
+			expectedResponse: []app.InstanceMiniResponse{
+				{
+					ID: "HaKpys8e",
+					Request: app.InstanceRequest{
+						RBName:      "test-rbdef",
+						RBVersion:   "v1",
+						ProfileName: "profile1",
+						CloudRegion: "region1",
+					},
+					Namespace: "testnamespace",
+				},
+			},
+			instClient: &mockInstanceClient{
+				miniitems: []app.InstanceMiniResponse{
+					{
+						ID: "HaKpys8e",
+						Request: app.InstanceRequest{
+							RBName:      "test-rbdef",
+							RBVersion:   "v1",
+							ProfileName: "profile1",
+							CloudRegion: "region1",
+						},
+						Namespace: "testnamespace",
+					},
+				},
+			},
+		},
 	}
 
 	for _, testCase := range testCases {
 		t.Run(testCase.label, func(t *testing.T) {
 			request := httptest.NewRequest("GET", "/v1/instance", nil)
+			if testCase.queryParams {
+				q := request.URL.Query()
+				for k, v := range testCase.queryParamsMap {
+					q.Add(k, v)
+				}
+				request.URL.RawQuery = q.Encode()
+			}
 			resp := executeRequest(request, NewRouter(nil, nil, testCase.instClient, nil, nil, nil))
 
 			if testCase.expectedCode != resp.StatusCode {