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/*
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 main
import (
"context"
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/k8splugin/internal"
"github.com/onap/multicloud-k8s/src/k8splugin/internal/config"
"github.com/onap/multicloud-k8s/src/k8splugin/internal/helm"
"github.com/onap/multicloud-k8s/src/k8splugin/internal/plugin"
)
// Compile time check to see if genericPlugin implements the correct interface
var _ plugin.Reference = genericPlugin{}
// ExportedVariable is what we will look for when calling the generic plugin
var ExportedVariable genericPlugin
type genericPlugin struct {
}
// Create generic object in a specific Kubernetes cluster
func (g genericPlugin) Create(yamlFilePath string, namespace string, client plugin.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.
plugin.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(context.TODO(), unstruct, metav1.CreateOptions{})
case meta.RESTScopeNameRoot:
createdObj, err = dynClient.Resource(gvr).Create(context.TODO(), 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
}
// Update deployment object in a specific Kubernetes cluster
func (g genericPlugin) Update(yamlFilePath string, namespace string, client plugin.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.
plugin.TagPodsIfPresent(unstruct, client.GetInstanceID())
gvr := mapping.Resource
var updatedObj *unstructured.Unstructured
switch mapping.Scope.Name() {
case meta.RESTScopeNameNamespace:
updatedObj, err = dynClient.Resource(gvr).Namespace(namespace).Update(context.TODO(), unstruct, metav1.UpdateOptions{})
case meta.RESTScopeNameRoot:
updatedObj, err = dynClient.Resource(gvr).Update(context.TODO(), unstruct, metav1.UpdateOptions{})
default:
return "", pkgerrors.New("Got an unknown RESTSCopeName for mapping: " + gvk.String())
}
if err != nil {
return "", pkgerrors.Wrap(err, "Update object error")
}
return updatedObj.GetName(), nil
}
// Get an existing resource hosted in a specific Kubernetes cluster
func (g genericPlugin) Get(resource helm.KubernetesResource,
namespace string, client plugin.KubernetesConnector) (string, error) {
if namespace == "" {
namespace = "default"
}
dynClient := client.GetDynamicClient()
mapper := client.GetMapper()
mapping, err := mapper.RESTMapping(schema.GroupKind{
Group: resource.GVK.Group,
Kind: resource.GVK.Kind,
}, resource.GVK.Version)
if err != nil {
return "", pkgerrors.Wrap(err, "Mapping kind to resource error")
}
gvr := mapping.Resource
opts := metav1.GetOptions{}
var unstruct *unstructured.Unstructured
switch mapping.Scope.Name() {
case meta.RESTScopeNameNamespace:
unstruct, err = dynClient.Resource(gvr).Namespace(namespace).Get(context.TODO(), resource.Name, opts)
case meta.RESTScopeNameRoot:
unstruct, err = dynClient.Resource(gvr).Get(context.TODO(), resource.Name, opts)
default:
return "", pkgerrors.New("Got an unknown RESTSCopeName for mapping: " + resource.GVK.String())
}
if err != nil {
return "", pkgerrors.Wrap(err, "Delete object error")
}
return unstruct.GetName(), nil
}
// List all existing resources of the GroupVersionKind
// TODO: Implement in seperate patch
func (g genericPlugin) List(gvk schema.GroupVersionKind, namespace string,
client plugin.KubernetesConnector) ([]helm.KubernetesResource, error) {
var returnData []helm.KubernetesResource
return returnData, nil
}
// Delete an existing resource hosted in a specific Kubernetes cluster
func (g genericPlugin) Delete(resource helm.KubernetesResource, namespace string, client plugin.KubernetesConnector) error {
if namespace == "" {
namespace = "default"
}
dynClient := client.GetDynamicClient()
mapper := client.GetMapper()
mapping, err := mapper.RESTMapping(schema.GroupKind{
Group: resource.GVK.Group,
Kind: resource.GVK.Kind,
}, resource.GVK.Version)
if err != nil {
return pkgerrors.Wrap(err, "Mapping kind to resource error")
}
gvr := mapping.Resource
deletePolicy := metav1.DeletePropagationBackground
opts := metav1.DeleteOptions{
PropagationPolicy: &deletePolicy,
}
switch mapping.Scope.Name() {
case meta.RESTScopeNameNamespace:
err = dynClient.Resource(gvr).Namespace(namespace).Delete(context.TODO(), resource.Name, opts)
case meta.RESTScopeNameRoot:
err = dynClient.Resource(gvr).Delete(context.TODO(), resource.Name, opts)
default:
return pkgerrors.New("Got an unknown RESTSCopeName for mapping: " + resource.GVK.String())
}
if err != nil {
return pkgerrors.Wrap(err, "Delete object error")
}
return nil
}
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