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util.go
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util.go
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package framework
import (
"errors"
"fmt"
"strconv"
"strings"
"time"
"k8s.io/apimachinery/pkg/labels"
logf "sigs.k8s.io/controller-runtime/pkg/runtime/log"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/wait"
clientset "k8s.io/client-go/kubernetes"
restclient "k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
clientcmdapi "k8s.io/client-go/tools/clientcmd/api"
api "github.com/presslabs/mysql-operator/pkg/apis/mysql/v1alpha1"
"github.com/presslabs/mysql-operator/test/e2e/framework/ginkgowrapper"
)
const (
PodStartTimeout = 5 * time.Minute
// How often to Poll pods, nodes and claims.
Poll = 2 * time.Second
)
var log = logf.Log.WithName("framework.util")
// CreateTestingNS should be used by every test, note that we append a common prefix to the provided test name.
// Please see NewFramework instead of using this directly.
func CreateTestingNS(baseName string, c clientset.Interface, labels map[string]string) (*corev1.Namespace, error) {
if labels == nil {
labels = map[string]string{}
}
namespaceObj := &corev1.Namespace{
ObjectMeta: metav1.ObjectMeta{
// use a short name because long names produce long hostnames but
// maximum allowed length by mysql is 60.
// https://dev.mysql.com/doc/refman/8.0/en/change-master-to.html
GenerateName: fmt.Sprintf("e2e-%v-", baseName),
Namespace: "",
Labels: labels,
},
Status: corev1.NamespaceStatus{},
}
// Be robust about making the namespace creation call.
var got *corev1.Namespace
if err := wait.PollImmediate(Poll, 30*time.Second, func() (bool, error) {
var err error
got, err = c.CoreV1().Namespaces().Create(namespaceObj)
if err != nil {
Logf("Unexpected error while creating namespace: %v", err)
return false, nil
}
return true, nil
}); err != nil {
return nil, err
}
return got, nil
}
func RestclientConfig(kubeContext string) (*clientcmdapi.Config, error) {
if TestContext.KubeConfig == "" {
return nil, fmt.Errorf("KubeConfig must be specified to load client config")
}
c, err := clientcmd.LoadFromFile(TestContext.KubeConfig)
if err != nil {
return nil, fmt.Errorf("error loading KubeConfig: %v", err.Error())
}
if kubeContext != "" {
c.CurrentContext = kubeContext
}
return c, nil
}
func LoadConfig() (*restclient.Config, error) {
c, err := RestclientConfig(TestContext.KubeContext)
if err != nil {
if TestContext.KubeConfig == "" {
return restclient.InClusterConfig()
} else {
return nil, err
}
}
return clientcmd.NewDefaultClientConfig(*c, &clientcmd.ConfigOverrides{ClusterInfo: clientcmdapi.Cluster{Server: TestContext.KubeHost}}).ClientConfig()
}
func waitTimeoutForPodReadyInNamespace(c clientset.Interface, podName, namespace string, timeout time.Duration) error {
return wait.PollImmediate(Poll, timeout, podRunningAndReady(c, podName, namespace))
}
func podRunningAndReady(c clientset.Interface, podName, namespace string) wait.ConditionFunc {
return func() (bool, error) {
pod, err := c.CoreV1().Pods(namespace).Get(podName, metav1.GetOptions{})
if err != nil {
return false, err
}
return podRunningAndReadyByPhase(*pod)
}
}
func podRunningAndReadyByPhase(pod corev1.Pod) (bool, error) {
switch pod.Status.Phase {
case corev1.PodFailed, corev1.PodSucceeded:
return false, errors.New("pod completed")
case corev1.PodRunning:
for _, cond := range pod.Status.Conditions {
if cond.Type != corev1.PodReady {
continue
}
return cond.Status == corev1.ConditionTrue, nil
}
return false, errors.New("pod ready condition not found")
}
return false, nil
}
// deleteNS deletes the provided namespace, waits for it to be completely deleted, and then checks
// whether there are any pods remaining in a non-terminating state.
func DeleteNS(c clientset.Interface, namespace string, timeout time.Duration) error {
startTime := time.Now()
if err := c.CoreV1().Namespaces().Delete(namespace, nil); err != nil {
return err
}
// wait for namespace to delete or timeout.
// err := wait.PollImmediate(2*time.Second, timeout, func() (bool, error) {
// if _, err := c.CoreV1().Namespaces().Get(namespace, metav1.GetOptions{}); err != nil {
// if apierrs.IsNotFound(err) {
// return true, nil
// }
// Logf("Error while waiting for namespace to be terminated: %v", err)
// return false, nil
// }
// return false, nil
// })
Logf("namespace %v deletion completed in %s", namespace, time.Now().Sub(startTime))
return nil
}
func Logf(format string, args ...interface{}) {
msg := fmt.Sprintf(format, args...)
log.Info(msg)
}
func Failf(format string, args ...interface{}) {
msg := fmt.Sprintf(format, args...)
ginkgowrapper.Fail(nowStamp()+": "+msg, 2)
}
func nowStamp() string {
return time.Now().Format(time.StampMilli)
}
func GetPodLogs(c clientset.Interface, namespace, podName, containerName string) (string, error) {
return getPodLogsInternal(c, namespace, podName, containerName, false)
}
func getPreviousPodLogs(c clientset.Interface, namespace, podName, containerName string) (string, error) {
return getPodLogsInternal(c, namespace, podName, containerName, true)
}
// utility function for gomega Eventually
func getPodLogsInternal(c clientset.Interface, namespace, podName, containerName string, previous bool) (string, error) {
logs, err := c.CoreV1().RESTClient().Get().
Resource("pods").
Namespace(namespace).
Name(podName).SubResource("log").
Param("container", containerName).
Param("previous", strconv.FormatBool(previous)).
Do().
Raw()
if err != nil {
return "", err
}
if err == nil && strings.Contains(string(logs), "Internal Error") {
return "", fmt.Errorf("Fetched log contains \"Internal Error\": %q.", string(logs))
}
return string(logs), err
}
func kubectlLogPod(c clientset.Interface, pod corev1.Pod, containerNameSubstr string, logFunc func(ftm string, args ...interface{})) {
for _, container := range pod.Spec.Containers {
if strings.Contains(container.Name, containerNameSubstr) {
// Contains() matches all strings if substr is empty
logs, err := GetPodLogs(c, pod.Namespace, pod.Name, container.Name)
if err != nil {
logFunc("Failed to get logs of pod %v, container %v, err: %v", pod.Name, container.Name, err)
}
plogs, err := getPreviousPodLogs(c, pod.Namespace, pod.Name, container.Name)
plogs = "PREVIOUS\n" + plogs
if err != nil {
plogs = fmt.Sprintf("Failed to get previous logs for pod %v, container %v, err: %v", pod.Name, container.Name, err)
}
logFunc("Logs of %v/%v:%v on node %v", pod.Namespace, pod.Name, container.Name, pod.Spec.NodeName)
logFunc("%s : %s \nSTARTLOG\n%s\nENDLOG for container %v:%v:%v", plogs, containerNameSubstr, logs, pod.Namespace, pod.Name, container.Name)
}
}
}
func LogPodsWithLabels(c clientset.Interface, ns string, match map[string]string, logFunc func(ftm string, args ...interface{})) {
podList, err := c.CoreV1().Pods(ns).List(metav1.ListOptions{LabelSelector: labels.SelectorFromSet(match).String()})
if err != nil {
logFunc("Error getting pods in namespace %q: %v", ns, err)
return
}
logFunc("Running kubectl logs on pods with labels %v in %v", match, ns)
for _, pod := range podList.Items {
kubectlLogPod(c, pod, "", logFunc)
}
}
func LogContainersInPodsWithLabels(c clientset.Interface, ns string, match map[string]string, containerSubstr string, logFunc func(ftm string, args ...interface{})) {
podList, err := c.CoreV1().Pods(ns).List(metav1.ListOptions{LabelSelector: labels.SelectorFromSet(match).String()})
if err != nil {
Logf("Error getting pods in namespace %q: %v", ns, err)
return
}
for _, pod := range podList.Items {
kubectlLogPod(c, pod, containerSubstr, logFunc)
}
}
func NewCluster(name, ns string) *api.MysqlCluster {
one := int32(1)
return &api.MysqlCluster{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: ns,
},
Spec: api.MysqlClusterSpec{
Replicas: &one,
SecretName: name,
VolumeSpec: api.VolumeSpec{
PersistentVolumeClaim: &corev1.PersistentVolumeClaimSpec{
Resources: corev1.ResourceRequirements{
Requests: corev1.ResourceList{
corev1.ResourceStorage: resource.MustParse("1Gi"),
},
},
},
},
},
}
}
func NewClusterSecret(name, ns, pw string) *corev1.Secret {
return &corev1.Secret{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: ns,
},
StringData: map[string]string{
"ROOT_PASSWORD": pw,
},
}
}
func OrcClusterName(cluster *api.MysqlCluster) string {
return fmt.Sprintf("%s.%s", cluster.Name, cluster.Namespace)
}