Add a couple of sanity checks in DCM

When applying, check whether logical cloud is already applied.
When deleting logical cloud, check if it exists.

Issue-ID: MULTICLOUD-1143
Change-Id: I6aa11d8921db76e3d9e9632f915b55fe7ab8efab
Signed-off-by: Igor D.C <igor.duarte.cardoso@intel.com>

3 files changed, 21 insertions, 1 deletions

diff --git a/src/dcm/api/logicalCloudHandler.go b/src/dcm/api/logicalCloudHandler.go
index 2e1811b7..fb0f0c63 100644
--- a/src/dcm/api/logicalCloudHandler.go
+++ b/src/dcm/api/logicalCloudHandler.go
@@ -186,6 +186,13 @@ func (h logicalCloudHandler) applyHandler(w http.ResponseWriter, r *http.Request
 		return
 	}
 
+	_, ctxVal, err := h.client.GetLogicalCloudContext(name)
+	if ctxVal != "" {
+		err = pkgerrors.New("Logical Cloud already applied")
+		http.Error(w, err.Error(), http.StatusConflict)
+		return
+	}
+
 	// Get Clusters
 	clusters, err := h.clusterClient.GetAllClusters(project, name)
 
diff --git a/src/dcm/pkg/module/logicalcloud.go b/src/dcm/pkg/module/logicalcloud.go
index 9b8ff703..61d7b7a5 100644
--- a/src/dcm/pkg/module/logicalcloud.go
+++ b/src/dcm/pkg/module/logicalcloud.go
@@ -199,7 +199,12 @@ func (v *LogicalCloudClient) Delete(project, logicalCloudName string) error {
 		Project:          project,
 		LogicalCloudName: logicalCloudName,
 	}
-	err := v.util.DBRemove(v.storeName, key)
+	//Check if this Logical Cloud exists
+	_, err := v.Get(project, logicalCloudName)
+	if err != nil {
+		return pkgerrors.New("Logical Cloud does not exist")
+	}
+	err = v.util.DBRemove(v.storeName, key)
 	if err != nil {
 		return pkgerrors.Wrap(err, "Delete Logical Cloud")
 	}
diff --git a/src/dcm/pkg/module/logicalcloud_test.go b/src/dcm/pkg/module/logicalcloud_test.go
index 0a0e2f5d..4700eff0 100644
--- a/src/dcm/pkg/module/logicalcloud_test.go
+++ b/src/dcm/pkg/module/logicalcloud_test.go
@@ -117,7 +117,15 @@ func TestDeleteLogicalCloud(t *testing.T) {
 
 	myMocks := new(mockValues)
 
+	data1 := [][]byte{
+		[]byte("abc"),
+	}
+	data2 := []byte("abc")
+
 	myMocks.On("DBRemove", "test_dcm", key).Return(nil)
+	myMocks.On("DBFind", "test_dcm", key, "test_meta").Return(data1, nil)
+	myMocks.On("DBUnmarshal", data2).Return(nil)
+	// TODO also test for when the logical cloud doesn't exist
 
 	lcClient := LogicalCloudClient{"test_dcm", "test_meta", "test_context", myMocks}
 	err := lcClient.Delete("test_project", "test_asdf")