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framework.go
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framework.go
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// Copyright 2016 The prometheus-operator 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 (
"net/http"
"time"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/fields"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/pkg/api/v1"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
"github.com/coreos/prometheus-operator/pkg/client/monitoring/v1alpha1"
"github.com/coreos/prometheus-operator/pkg/k8sutil"
"github.com/pkg/errors"
)
type Framework struct {
KubeClient kubernetes.Interface
MonClient *v1alpha1.MonitoringV1alpha1Client
HTTPClient *http.Client
MasterHost string
Namespace *v1.Namespace
OperatorPod *v1.Pod
ClusterIP string
DefaultTimeout time.Duration
}
// Setup setups a test framework and returns it.
func New(ns, kubeconfig, opImage, ip string) (*Framework, error) {
config, err := clientcmd.BuildConfigFromFlags("", kubeconfig)
if err != nil {
return nil, err
}
cli, err := kubernetes.NewForConfig(config)
if err != nil {
return nil, err
}
httpc := cli.CoreV1().RESTClient().(*rest.RESTClient).Client
if err != nil {
return nil, err
}
mclient, err := v1alpha1.NewForConfig(config)
if err != nil {
return nil, err
}
namespace, err := CreateNamespace(cli, ns)
if err != nil {
return nil, err
}
f := &Framework{
MasterHost: config.Host,
KubeClient: cli,
MonClient: mclient,
HTTPClient: httpc,
Namespace: namespace,
ClusterIP: ip,
DefaultTimeout: time.Minute,
}
err = f.setup(opImage)
if err != nil {
return nil, err
}
return f, nil
}
func (f *Framework) setup(opImage string) error {
if err := f.setupPrometheusOperator(opImage); err != nil {
return err
}
return nil
}
func (f *Framework) setupPrometheusOperator(opImage string) error {
deploy, err := MakeDeployment("../../example/non-rbac/prometheus-operator.yaml")
if err != nil {
return err
}
if opImage != "" {
// Override operator image used, if specified when running tests.
deploy.Spec.Template.Spec.Containers[0].Image = opImage
}
err = CreateDeployment(f.KubeClient, f.Namespace.Name, deploy)
if err != nil {
return err
}
opts := metav1.ListOptions{LabelSelector: fields.SelectorFromSet(fields.Set(deploy.Spec.Template.ObjectMeta.Labels)).String()}
err = WaitForPodsReady(f.KubeClient, f.Namespace.Name, f.DefaultTimeout, 1, opts)
if err != nil {
return errors.Wrap(err, "failed to wait for prometheus operator to become ready")
}
pl, err := f.KubeClient.Core().Pods(f.Namespace.Name).List(opts)
if err != nil {
return err
}
f.OperatorPod = &pl.Items[0]
err = k8sutil.WaitForTPRReady(f.KubeClient.Core().RESTClient(), v1alpha1.TPRGroup, v1alpha1.TPRVersion, v1alpha1.TPRPrometheusName)
if err != nil {
return err
}
err = k8sutil.WaitForTPRReady(f.KubeClient.Core().RESTClient(), v1alpha1.TPRGroup, v1alpha1.TPRVersion, v1alpha1.TPRServiceMonitorName)
if err != nil {
return err
}
return k8sutil.WaitForTPRReady(f.KubeClient.Core().RESTClient(), v1alpha1.TPRGroup, v1alpha1.TPRVersion, v1alpha1.TPRAlertmanagerName)
}
// Teardown tears down a previously initialized test environment.
func (f *Framework) Teardown() error {
if err := f.KubeClient.Core().Services(f.Namespace.Name).Delete("prometheus-operated", nil); err != nil && !k8sutil.IsResourceNotFoundError(err) {
return err
}
if err := f.KubeClient.Core().Services(f.Namespace.Name).Delete("alertmanager-operated", nil); err != nil && !k8sutil.IsResourceNotFoundError(err) {
return err
}
if err := f.KubeClient.Extensions().Deployments(f.Namespace.Name).Delete("prometheus-operator", nil); err != nil {
return err
}
if err := DeleteNamespace(f.KubeClient, f.Namespace.Name); err != nil {
return err
}
return nil
}