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resource_creator.go
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/
resource_creator.go
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// Copyright 2018 The Operator-SDK Authors
//
// 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 framework
import (
"bytes"
goctx "context"
"strings"
y2j "github.com/ghodss/yaml"
yaml "gopkg.in/yaml.v2"
core "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/runtime/serializer"
"k8s.io/client-go/kubernetes/scheme"
"k8s.io/client-go/rest"
)
func (ctx *TestCtx) GetNamespace() (string, error) {
if ctx.Namespace != "" {
return ctx.Namespace, nil
}
// create namespace
ctx.Namespace = ctx.GetID()
namespaceObj := &core.Namespace{ObjectMeta: metav1.ObjectMeta{Name: ctx.Namespace}}
_, err := Global.KubeClient.CoreV1().Namespaces().Create(namespaceObj)
if err != nil {
return "", err
}
ctx.AddFinalizerFn(func() error {
return Global.KubeClient.CoreV1().Namespaces().Delete(ctx.Namespace, metav1.NewDeleteOptions(0))
})
return ctx.Namespace, nil
}
func (ctx *TestCtx) GetCRClient(yamlCR []byte) (*rest.RESTClient, error) {
if ctx.CRClient != nil {
return ctx.CRClient, nil
}
// get new RESTClient for custom resources
crConfig := Global.KubeConfig
yamlMap := make(map[interface{}]interface{})
err := yaml.Unmarshal(yamlCR, &yamlMap)
if err != nil {
return nil, err
}
groupVersion := strings.Split(yamlMap["apiVersion"].(string), "/")
crGV := schema.GroupVersion{Group: groupVersion[0], Version: groupVersion[1]}
crConfig.GroupVersion = &crGV
crConfig.APIPath = "/apis"
crConfig.NegotiatedSerializer = serializer.DirectCodecFactory{CodecFactory: scheme.Codecs}
if crConfig.UserAgent == "" {
crConfig.UserAgent = rest.DefaultKubernetesUserAgent()
}
ctx.CRClient, err = rest.RESTClientFor(crConfig)
if err != nil {
return nil, err
}
return ctx.CRClient, nil
}
func (ctx *TestCtx) createCRFromYAML(yamlFile []byte) error {
client, err := ctx.GetCRClient(yamlFile)
if err != nil {
return err
}
namespace, err := ctx.GetNamespace()
if err != nil {
return err
}
yamlMap := make(map[interface{}]interface{})
err = yaml.Unmarshal(yamlFile, &yamlMap)
if err != nil {
return err
}
kind := yamlMap["kind"].(string)
resourceName := kind + "s"
jsonDat, err := y2j.YAMLToJSON(yamlFile)
err = client.Post().
Namespace(namespace).
Resource(resourceName).
Body(jsonDat).
Do().
Error()
ctx.AddFinalizerFn(func() error {
return client.Delete().
Namespace(namespace).
Resource(resourceName).
Body(metav1.NewDeleteOptions(0)).
Do().
Error()
})
return err
}
func setNamespaceYAML(yamlFile []byte, namespace string) ([]byte, error) {
yamlMap := make(map[interface{}]interface{})
err := yaml.Unmarshal(yamlFile, &yamlMap)
if err != nil {
return nil, err
}
yamlMap["metadata"].(map[interface{}]interface{})["namespace"] = namespace
return yaml.Marshal(yamlMap)
}
func (ctx *TestCtx) CreateFromYAML(yamlFile []byte) error {
namespace, err := ctx.GetNamespace()
if err != nil {
return err
}
yamlSplit := bytes.Split(yamlFile, []byte("\n---\n"))
for _, yamlSpec := range yamlSplit {
yamlSpec, err = setNamespaceYAML(yamlSpec, namespace)
if err != nil {
return err
}
obj, _, err := Global.DynamicDecoder.Decode(yamlSpec, nil, nil)
if err != nil {
// DynamicClient/DynamicDecoder can only handle standard and extensions kubernetes resources.
// If a resource is not recognized by the decoder, assume it's a custom resource and fall back
// to createCRFromYAML.
return ctx.createCRFromYAML(yamlFile)
}
err = Global.DynamicClient.Create(goctx.TODO(), obj)
if err != nil {
return err
}
ctx.AddFinalizerFn(func() error { return Global.DynamicClient.Delete(goctx.TODO(), obj) })
}
return nil
}