forked from googleforgames/agones
/
framework.go
275 lines (232 loc) · 8.41 KB
/
framework.go
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// Copyright 2018 Google Inc. All Rights Reserved.
//
// 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 is a package helping setting up end-to-end testing across a
// Kubernetes cluster.
package framework
import (
"fmt"
"net"
"testing"
"time"
"agones.dev/agones/pkg/apis/stable/v1alpha1"
"agones.dev/agones/pkg/client/clientset/versioned"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/kubernetes"
// required to use gcloud login see: https://github.com/kubernetes/client-go/issues/242
_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
"k8s.io/client-go/tools/clientcmd"
)
// special labels that can be put on pods to trigger automatic cleanup.
const (
AutoCleanupLabelKey = "stable.agones.dev/e2e-test-auto-cleanup"
AutoCleanupLabelValue = "true"
)
// Framework is a testing framework
type Framework struct {
KubeClient kubernetes.Interface
AgonesClient versioned.Interface
GameServerImage string
PullSecret string
StressTestLevel int
}
// New setups a testing framework using a kubeconfig path and the game server image to use for testing.
func New(kubeconfig, gsimage string, pullSecret string, stressTestLevel int) (*Framework, error) {
config, err := clientcmd.BuildConfigFromFlags("", kubeconfig)
if err != nil {
return nil, errors.Wrap(err, "build config from flags failed")
}
kubeClient, err := kubernetes.NewForConfig(config)
if err != nil {
return nil, errors.Wrap(err, "creating new kube-client failed")
}
agonesClient, err := versioned.NewForConfig(config)
if err != nil {
return nil, errors.Wrap(err, "creating new agones-client failed")
}
return &Framework{
KubeClient: kubeClient,
AgonesClient: agonesClient,
GameServerImage: gsimage,
PullSecret: pullSecret,
StressTestLevel: stressTestLevel,
}, nil
}
// CreateGameServerAndWaitUntilReady Creates a GameServer and wait for its state to become ready.
func (f *Framework) CreateGameServerAndWaitUntilReady(ns string, gs *v1alpha1.GameServer) (*v1alpha1.GameServer, error) {
newGs, err := f.AgonesClient.StableV1alpha1().GameServers(ns).Create(gs)
if err != nil {
return nil, fmt.Errorf("creating %v GameServer instances failed (%v): %v", gs.Spec, gs.Name, err)
}
logrus.WithField("name", newGs.ObjectMeta.Name).Info("GameServer created, waiting for Ready")
readyGs, err := f.WaitForGameServerState(newGs, v1alpha1.GameServerStateReady, 5*time.Minute)
if err != nil {
return nil, fmt.Errorf("waiting for %v GameServer instance readiness timed out (%v): %v",
gs.Spec, gs.Name, err)
}
if len(readyGs.Status.Ports) == 0 {
return nil, fmt.Errorf("Ready GameServer instance has no port: %v", readyGs.Status)
}
return readyGs, nil
}
// WaitForGameServerState Waits untils the gameserver reach a given state before the timeout expires
func (f *Framework) WaitForGameServerState(gs *v1alpha1.GameServer, state v1alpha1.GameServerState,
timeout time.Duration) (*v1alpha1.GameServer, error) {
var pollErr error
var readyGs *v1alpha1.GameServer
err := wait.PollImmediate(2*time.Second, timeout, func() (bool, error) {
readyGs, pollErr = f.AgonesClient.StableV1alpha1().GameServers(gs.Namespace).Get(gs.Name, metav1.GetOptions{})
if pollErr != nil {
return false, nil
}
if readyGs.Status.State == state {
return true, nil
}
return false, nil
})
if err != nil {
return nil, errors.Wrapf(pollErr, "waiting for GameServer to be %v %v/%v: %v",
state, gs.Namespace, gs.Name, err)
}
return readyGs, nil
}
// WaitForFleetCondition waits for the Fleet to be in a specific condition or fails the test if the condition can't be met in 5 minutes.
func (f *Framework) WaitForFleetCondition(t *testing.T, flt *v1alpha1.Fleet, condition func(fleet *v1alpha1.Fleet) bool) {
t.Helper()
logrus.WithField("fleet", flt.Name).Info("waiting for fleet condition")
err := wait.PollImmediate(2*time.Second, 5*time.Minute, func() (bool, error) {
fleet, err := f.AgonesClient.StableV1alpha1().Fleets(flt.ObjectMeta.Namespace).Get(flt.ObjectMeta.Name, metav1.GetOptions{})
if err != nil {
return true, err
}
return condition(fleet), nil
})
if err != nil {
logrus.WithField("fleet", flt.Name).WithError(err).Info("error waiting for fleet condition")
t.Fatalf("error waiting for fleet condition on fleet %v", flt.Name)
}
}
// ListGameServersFromFleet lists GameServers from a particular fleet
func (f *Framework) ListGameServersFromFleet(flt *v1alpha1.Fleet) ([]v1alpha1.GameServer, error) {
var results []v1alpha1.GameServer
opts := metav1.ListOptions{LabelSelector: labels.Set{v1alpha1.FleetNameLabel: flt.ObjectMeta.Name}.String()}
gsSetList, err := f.AgonesClient.StableV1alpha1().GameServerSets(flt.ObjectMeta.Namespace).List(opts)
if err != nil {
return results, err
}
for _, gsSet := range gsSetList.Items {
opts := metav1.ListOptions{LabelSelector: labels.Set{v1alpha1.GameServerSetGameServerLabel: gsSet.ObjectMeta.Name}.String()}
gsList, err := f.AgonesClient.StableV1alpha1().GameServers(flt.ObjectMeta.Namespace).List(opts)
if err != nil {
return results, err
}
results = append(results, gsList.Items...)
}
return results, nil
}
// FleetReadyCount returns the ready count in a fleet
func FleetReadyCount(amount int32) func(fleet *v1alpha1.Fleet) bool {
return func(fleet *v1alpha1.Fleet) bool {
logrus.Infof("fleet %v has %v/%v ready replicas", fleet.Name, fleet.Status.ReadyReplicas, amount)
return fleet.Status.ReadyReplicas == amount
}
}
// WaitForFleetGameServersCondition wait for all GameServers for a given
// fleet to match the spec.replicas and match a a condition
func (f *Framework) WaitForFleetGameServersCondition(flt *v1alpha1.Fleet, cond func(server v1alpha1.GameServer) bool) error {
return wait.Poll(2*time.Second, 5*time.Minute, func() (done bool, err error) {
gsList, err := f.ListGameServersFromFleet(flt)
if err != nil {
return false, err
}
if int32(len(gsList)) != flt.Spec.Replicas {
return false, nil
}
if err != nil {
return false, err
}
for _, gs := range gsList {
if !cond(gs) {
return false, nil
}
}
return true, nil
})
}
// CleanUp Delete all Agones resources in a given namespace.
func (f *Framework) CleanUp(ns string) error {
logrus.Info("Cleaning up now.")
defer logrus.Info("Finished cleanup.")
alpha1 := f.AgonesClient.StableV1alpha1()
deleteOptions := &metav1.DeleteOptions{}
listOptions := metav1.ListOptions{}
// find and delete pods created by tests and labeled with our special label
pods := f.KubeClient.CoreV1().Pods(ns)
podList, err := pods.List(metav1.ListOptions{
LabelSelector: AutoCleanupLabelKey + "=" + AutoCleanupLabelValue,
})
if err != nil {
return err
}
for _, p := range podList.Items {
if err = pods.Delete(p.ObjectMeta.Name, deleteOptions); err != nil {
return err
}
}
err = alpha1.Fleets(ns).DeleteCollection(deleteOptions, listOptions)
if err != nil {
return err
}
err = alpha1.GameServerAllocations(ns).DeleteCollection(deleteOptions, listOptions)
if err != nil {
return err
}
err = alpha1.FleetAllocations(ns).DeleteCollection(deleteOptions, listOptions)
if err != nil {
return err
}
err = alpha1.FleetAutoscalers(ns).DeleteCollection(deleteOptions, listOptions)
if err != nil {
return err
}
return alpha1.GameServers(ns).
DeleteCollection(deleteOptions, listOptions)
}
// PingGameServer pings a gameserver and returns its reply
func PingGameServer(msg, address string) (reply string, err error) {
conn, err := net.Dial("udp", address)
if err != nil {
return "", err
}
defer func() {
err = conn.Close()
}()
_, err = conn.Write([]byte(msg))
if err != nil {
return "", errors.Wrapf(err, "Could not write message %s", msg)
}
b := make([]byte, 1024)
err = conn.SetReadDeadline(time.Now().Add(30 * time.Second))
if err != nil {
return "", err
}
n, err := conn.Read(b)
if err != nil {
return "", err
}
return string(b[:n]), nil
}