Instantiation and termination of a given context implementation.

Issue-ID: MULTICLOUD-1005
Signed-off-by: Manjunath Ranganathaiah <manjunath.ranganathaiah@intel.com>
Change-Id: I60e11aaad97b60efc24a02866dc0e580507e5296

1 files changed, 129 insertions, 0 deletions

diff --git a/src/rsync/pkg/resource/resource.go b/src/rsync/pkg/resource/resource.go
new file mode 100644
index 00000000..9d715697
--- /dev/null
+++ b/src/rsync/pkg/resource/resource.go
@@ -0,0 +1,129 @@
+/*
+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 resource
+
+import (
+	pkgerrors "github.com/pkg/errors"
+	"k8s.io/apimachinery/pkg/api/meta"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
+	"k8s.io/apimachinery/pkg/runtime/schema"
+
+	utils "github.com/onap/multicloud-k8s/src/rsync/pkg/internal"
+	"github.com/onap/multicloud-k8s/src/rsync/pkg/internal/config"
+	"github.com/onap/multicloud-k8s/src/rsync/pkg/connector"
+)
+
+type Resource struct {
+}
+
+// Create deployment object in a specific Kubernetes cluster
+func (r Resource) Create(yamlFilePath string, namespace string, client connector.KubernetesConnector) (string, error) {
+	if namespace == "" {
+		namespace = "default"
+	}
+
+	//Decode the yaml file to create a runtime.Object
+	unstruct := &unstructured.Unstructured{}
+	//Ignore the returned obj as we expect the data in unstruct
+	_, err := utils.DecodeYAML(yamlFilePath, unstruct)
+	if err != nil {
+		return "", pkgerrors.Wrap(err, "Decode deployment object error")
+	}
+
+	dynClient := client.GetDynamicClient()
+	mapper := client.GetMapper()
+
+	gvk := unstruct.GroupVersionKind()
+	mapping, err := mapper.RESTMapping(schema.GroupKind{Group: gvk.Group, Kind: gvk.Kind}, gvk.Version)
+	if err != nil {
+		return "", pkgerrors.Wrap(err, "Mapping kind to resource error")
+	}
+
+	//Add the tracking label to all resources created here
+	labels := unstruct.GetLabels()
+	//Check if labels exist for this object
+	if labels == nil {
+		labels = map[string]string{}
+	}
+	labels[config.GetConfiguration().KubernetesLabelName] = client.GetInstanceID()
+	unstruct.SetLabels(labels)
+
+	// This checks if the resource we are creating has a podSpec in it
+	// Eg: Deployment, StatefulSet, Job etc..
+	// If a PodSpec is found, the label will be added to it too.
+	connector.TagPodsIfPresent(unstruct, client.GetInstanceID())
+
+	gvr := mapping.Resource
+	var createdObj *unstructured.Unstructured
+
+	switch mapping.Scope.Name() {
+	case meta.RESTScopeNameNamespace:
+		createdObj, err = dynClient.Resource(gvr).Namespace(namespace).Create(unstruct, metav1.CreateOptions{})
+	case meta.RESTScopeNameRoot:
+		createdObj, err = dynClient.Resource(gvr).Create(unstruct, metav1.CreateOptions{})
+	default:
+		return "", pkgerrors.New("Got an unknown RESTSCopeName for mapping: " + gvk.String())
+	}
+
+	if err != nil {
+		return "", pkgerrors.Wrap(err, "Create object error")
+	}
+
+	return createdObj.GetName(), nil
+}
+
+// Delete an existing resource hosted in a specific Kubernetes cluster
+func (r Resource) Delete(yamlFilePath string, resname string, namespace string, client connector.KubernetesConnector) error {
+        if namespace == "" {
+                namespace = "default"
+        }
+
+        //Decode the yaml file to create a runtime.Object
+        unstruct := &unstructured.Unstructured{}
+        //Ignore the returned obj as we expect the data in unstruct
+        _, err := utils.DecodeYAML(yamlFilePath, unstruct)
+        if err != nil {
+                return pkgerrors.Wrap(err, "Decode deployment object error")
+        }
+
+        dynClient := client.GetDynamicClient()
+        mapper := client.GetMapper()
+
+        gvk := unstruct.GroupVersionKind()
+        mapping, err := mapper.RESTMapping(schema.GroupKind{Group: gvk.Group, Kind: gvk.Kind}, gvk.Version)
+        if err != nil {
+                return pkgerrors.Wrap(err, "Mapping kind to resource error")
+        }
+
+        gvr := mapping.Resource
+        deletePolicy := metav1.DeletePropagationForeground
+        opts := &metav1.DeleteOptions{
+                PropagationPolicy: &deletePolicy,
+        }
+
+        switch mapping.Scope.Name() {
+        case meta.RESTScopeNameNamespace:
+                err = dynClient.Resource(gvr).Namespace(namespace).Delete(resname, opts)
+        case meta.RESTScopeNameRoot:
+                err = dynClient.Resource(gvr).Delete(resname, opts)
+        default:
+                return pkgerrors.New("Got an unknown RESTSCopeName for mappin")
+        }
+
+        if err != nil {
+                return pkgerrors.Wrap(err, "Delete object error")
+        }
+        return nil
+}