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gameserver_test.go
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// Copyright 2018 Google LLC 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 e2e
import (
"bytes"
"context"
"fmt"
"io/ioutil"
"net"
"os/exec"
"strings"
"sync/atomic"
"testing"
"time"
agonesv1 "agones.dev/agones/pkg/apis/agones/v1"
allocationv1 "agones.dev/agones/pkg/apis/allocation/v1"
"agones.dev/agones/pkg/util/runtime"
e2eframework "agones.dev/agones/test/e2e/framework"
"github.com/sirupsen/logrus"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
corev1 "k8s.io/api/core/v1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/util/rand"
"k8s.io/apimachinery/pkg/util/wait"
)
const (
fakeIPAddress = "192.1.1.2"
)
func TestCreateConnect(t *testing.T) {
t.Parallel()
gs := framework.DefaultGameServer(framework.Namespace)
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
t.Fatalf("Could not get a GameServer ready: %v", err)
}
assert.Equal(t, len(readyGs.Status.Ports), 1)
assert.NotEmpty(t, readyGs.Status.Ports[0].Port)
assert.NotEmpty(t, readyGs.Status.Address)
assert.NotEmpty(t, readyGs.Status.NodeName)
assert.Equal(t, readyGs.Status.State, agonesv1.GameServerStateReady)
reply, err := framework.SendGameServerUDP(t, readyGs, "Hello World !")
if err != nil {
t.Fatalf("Could ping GameServer: %v", err)
}
assert.Equal(t, "ACK: Hello World !\n", reply)
}
// nolint:dupl
func TestSDKSetLabel(t *testing.T) {
t.Parallel()
ctx := context.Background()
gs := framework.DefaultGameServer(framework.Namespace)
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
t.Fatalf("Could not get a GameServer ready: %v", err)
}
assert.Equal(t, readyGs.Status.State, agonesv1.GameServerStateReady)
reply, err := framework.SendGameServerUDP(t, readyGs, "LABEL")
if err != nil {
t.Fatalf("Could ping GameServer: %v", err)
}
assert.Equal(t, "ACK: LABEL\n", reply)
// the label is set in a queue, so it may take a moment
err = wait.PollImmediate(time.Second, 10*time.Second, func() (bool, error) {
gs, err = framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Get(ctx, readyGs.ObjectMeta.Name, metav1.GetOptions{})
if err != nil {
return true, err
}
return gs.ObjectMeta.Labels != nil, nil
})
if assert.NoError(t, err) {
assert.NotEmpty(t, gs.ObjectMeta.Labels["agones.dev/sdk-timestamp"])
}
}
func TestHealthCheckDisable(t *testing.T) {
t.Parallel()
ctx := context.Background()
gs := framework.DefaultGameServer(framework.Namespace)
gs.Spec.Health = agonesv1.Health{
Disabled: true,
FailureThreshold: 1,
InitialDelaySeconds: 1,
PeriodSeconds: 1,
}
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
t.Fatalf("Could not get a GameServer ready: %v", err)
}
defer framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Delete(ctx, readyGs.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint: errcheck
_, err = framework.SendGameServerUDP(t, readyGs, "UNHEALTHY")
if err != nil {
t.Fatalf("Could not ping GameServer: %v", err)
}
time.Sleep(10 * time.Second)
gs, err = framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Get(ctx, readyGs.ObjectMeta.Name, metav1.GetOptions{})
if err != nil {
assert.FailNow(t, "gameserver get failed", err.Error())
}
assert.Equal(t, agonesv1.GameServerStateReady, gs.Status.State)
}
// nolint:dupl
func TestSDKSetAnnotation(t *testing.T) {
t.Parallel()
ctx := context.Background()
gs := framework.DefaultGameServer(framework.Namespace)
annotation := "agones.dev/sdk-timestamp"
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
t.Fatalf("Could not get a GameServer ready: %v", err)
}
defer framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Delete(ctx, readyGs.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint: errcheck
assert.Equal(t, readyGs.Status.State, agonesv1.GameServerStateReady)
reply, err := framework.SendGameServerUDP(t, readyGs, "ANNOTATION")
if err != nil {
t.Fatalf("Could ping GameServer: %v", err)
}
assert.Equal(t, "ACK: ANNOTATION\n", reply)
// the label is set in a queue, so it may take a moment
err = wait.PollImmediate(time.Second, time.Minute, func() (bool, error) {
gs, err = framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Get(ctx, readyGs.ObjectMeta.Name, metav1.GetOptions{})
if err != nil {
return true, err
}
_, ok := gs.ObjectMeta.Annotations[annotation]
return ok, nil
})
logrus.WithField("annotations", gs.ObjectMeta.Annotations).Info("annotation information")
if !assert.Nil(t, err) {
assert.FailNow(t, "error waiting on annotation to be set")
}
assert.NotEmpty(t, gs.ObjectMeta.Annotations[annotation])
assert.NotEmpty(t, gs.ObjectMeta.Annotations[agonesv1.VersionAnnotation])
}
func TestUnhealthyGameServerAfterHealthCheckFail(t *testing.T) {
t.Parallel()
gs := framework.DefaultGameServer(framework.Namespace)
gs.Spec.Health.FailureThreshold = 1
gs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
assert.FailNow(t, "Failed to create a gameserver", err.Error())
}
reply, err := framework.SendGameServerUDP(t, gs, "UNHEALTHY")
if err != nil {
assert.FailNow(t, "Failed to send a message to a gameserver", err.Error())
}
assert.Equal(t, "ACK: UNHEALTHY\n", reply)
_, err = framework.WaitForGameServerState(t, gs, agonesv1.GameServerStateUnhealthy, time.Minute)
assert.NoError(t, err)
}
func TestUnhealthyGameServersWithoutFreePorts(t *testing.T) {
t.Parallel()
ctx := context.Background()
nodes, err := framework.KubeClient.CoreV1().Nodes().List(ctx, metav1.ListOptions{})
if err != nil {
assert.FailNow(t, "Failed to list nodes", err.Error())
}
assert.True(t, len(nodes.Items) > 0)
template := framework.DefaultGameServer(framework.Namespace)
// choose port out of the minport/maxport range
// also rand it, just in case there are still previous static GameServers floating around.
template.Spec.Ports[0].HostPort = int32(rand.IntnRange(4000, 5000))
template.Spec.Ports[0].PortPolicy = agonesv1.Static
gameServers := framework.AgonesClient.AgonesV1().GameServers(framework.Namespace)
// one successful static port GameServer
gs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, template.DeepCopy())
require.NoError(t, err)
// now let's create the same one, but this time, require it be on the same node.
newGs := template.DeepCopy()
if newGs.Spec.Template.Spec.NodeSelector == nil {
newGs.Spec.Template.Spec.NodeSelector = map[string]string{}
}
newGs.Spec.Template.Spec.NodeSelector["kubernetes.io/hostname"] = gs.Status.NodeName
newGs, err = gameServers.Create(ctx, newGs, metav1.CreateOptions{})
require.NoError(t, err)
_, err = framework.WaitForGameServerState(t, newGs, agonesv1.GameServerStateUnhealthy, 5*time.Minute)
assert.NoError(t, err)
}
func TestGameServerUnhealthyAfterDeletingPod(t *testing.T) {
t.Parallel()
ctx := context.Background()
gs := framework.DefaultGameServer(framework.Namespace)
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
t.Fatalf("Could not get a GameServer ready: %v", err)
}
logrus.WithField("gsKey", readyGs.ObjectMeta.Name).Info("GameServer Ready")
gsClient := framework.AgonesClient.AgonesV1().GameServers(framework.Namespace)
podClient := framework.KubeClient.CoreV1().Pods(framework.Namespace)
defer gsClient.Delete(ctx, readyGs.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint: errcheck
pod, err := podClient.Get(ctx, readyGs.ObjectMeta.Name, metav1.GetOptions{})
if err != nil {
assert.FailNow(t, "Failed to get a pod", err.Error())
}
assert.True(t, metav1.IsControlledBy(pod, readyGs))
err = podClient.Delete(ctx, pod.ObjectMeta.Name, metav1.DeleteOptions{})
assert.NoError(t, err)
_, err = framework.WaitForGameServerState(t, readyGs, agonesv1.GameServerStateUnhealthy, 3*time.Minute)
assert.NoError(t, err)
}
func TestGameServerRestartBeforeReadyCrash(t *testing.T) {
t.Parallel()
ctx := context.Background()
logger := e2eframework.TestLogger(t)
gs := framework.DefaultGameServer(framework.Namespace)
// give some buffer with gameservers crashing and coming back
gs.Spec.Health.PeriodSeconds = 60 * 60
gs.Spec.Template.Spec.Containers[0].Env = append(gs.Spec.Template.Spec.Containers[0].Env, corev1.EnvVar{Name: "READY", Value: "FALSE"})
gsClient := framework.AgonesClient.AgonesV1().GameServers(framework.Namespace)
newGs, err := gsClient.Create(ctx, gs, metav1.CreateOptions{})
if err != nil {
assert.Fail(t, "could not create the gameserver", err.Error())
}
defer gsClient.Delete(ctx, newGs.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint: errcheck
logger.Info("Waiting for us to have an address to send things to")
newGs, err = framework.WaitForGameServerState(t, newGs, agonesv1.GameServerStateScheduled, time.Minute)
if err != nil {
assert.FailNow(t, "Failed schedule a pod", err.Error())
}
logger.WithField("gs", newGs.ObjectMeta.Name).Info("GameServer created")
address := fmt.Sprintf("%s:%d", newGs.Status.Address, newGs.Status.Ports[0].Port)
logger.WithField("address", address).Info("Dialing UDP message to address")
messageAndWait := func(gs *agonesv1.GameServer, msg string, check func(gs *agonesv1.GameServer, pod *corev1.Pod) bool) error {
return wait.PollImmediate(200*time.Millisecond, 3*time.Minute, func() (bool, error) {
gs, err := gsClient.Get(ctx, gs.ObjectMeta.Name, metav1.GetOptions{})
if err != nil {
logger.WithError(err).Warn("could not get gameserver")
return true, err
}
pod, err := framework.KubeClient.CoreV1().Pods(framework.Namespace).Get(ctx, newGs.ObjectMeta.Name, metav1.GetOptions{})
if err != nil {
logger.WithError(err).Warn("could not get pod for gameserver")
return true, err
}
if check(gs, pod) {
return true, nil
}
// create a connection each time, as weird stuff happens if the receiver isn't up and running.
conn, err := net.Dial("udp", address)
if err != nil {
logger.WithError(err).Warn("could not create connection")
return true, err
}
defer conn.Close() // nolint: errcheck
// doing this last, so that there is a short delay between the msg being sent, and the check.
logger.WithField("gs", gs.ObjectMeta.Name).WithField("msg", msg).
WithField("state", gs.Status.State).Info("sending message")
if _, err = conn.Write([]byte(msg)); err != nil {
logger.WithError(err).WithField("gs", gs.ObjectMeta.Name).
WithField("state", gs.Status.State).Info("error sending packet")
}
return false, nil
})
}
logger.Info("crashing, and waiting to see restart")
err = messageAndWait(newGs, "CRASH", func(gs *agonesv1.GameServer, pod *corev1.Pod) bool {
for _, c := range pod.Status.ContainerStatuses {
if c.Name == newGs.Spec.Container && c.RestartCount > 0 {
logger.Info("successfully crashed. Moving on!")
return true
}
}
return false
})
assert.NoError(t, err)
// check that the GameServer is not in an unhealthy state. If it does happen, it should happen pretty quick
newGs, err = framework.WaitForGameServerState(t, newGs, agonesv1.GameServerStateUnhealthy, 5*time.Second)
// should be an error, as the state should not occur
if !assert.Error(t, err) {
assert.FailNow(t, "GameServer should not be Unhealthy")
}
assert.Contains(t, err.Error(), "waiting for GameServer")
// ping READY until it doesn't fail anymore - since it may take a while
// for this to come back up -- or we could get a delayed CRASH, so we have to
// wait for the process to restart again to fire the SDK.Ready()
logger.Info("marking GameServer as ready")
err = messageAndWait(newGs, "READY", func(gs *agonesv1.GameServer, pod *corev1.Pod) bool {
if gs.Status.State == agonesv1.GameServerStateReady {
logger.Info("ready! Moving On!")
return true
}
return false
})
assert.NoError(t, err)
// now crash, should be unhealthy, since it's after being Ready
logger.Info("crashing again, should be unhealthy")
// retry on crash, as with the restarts, sometimes Go takes a moment to send this through.
err = messageAndWait(newGs, "CRASH", func(gs *agonesv1.GameServer, pod *corev1.Pod) bool {
logger.WithField("gs", gs.ObjectMeta.Name).WithField("state", gs.Status.State).
Info("checking final crash state")
if gs.Status.State == agonesv1.GameServerStateUnhealthy {
logger.Info("Unhealthy! We are done!")
return true
}
return false
})
assert.NoError(t, err)
}
func TestGameServerUnhealthyAfterReadyCrash(t *testing.T) {
t.Parallel()
ctx := context.Background()
l := logrus.WithField("test", "TestGameServerUnhealthyAfterReadyCrash")
gs := framework.DefaultGameServer(framework.Namespace)
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
t.Fatalf("Could not get a GameServer ready: %v", err)
}
l.WithField("gs", readyGs.ObjectMeta.Name).Info("GameServer created")
gsClient := framework.AgonesClient.AgonesV1().GameServers(framework.Namespace)
defer gsClient.Delete(ctx, readyGs.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint: errcheck
address := fmt.Sprintf("%s:%d", readyGs.Status.Address, readyGs.Status.Ports[0].Port)
// keep crashing, until we move to Unhealthy. Solves potential issues with controller Informer cache
// race conditions in which it has yet to see a GameServer is Ready before the crash.
var stop int32
defer func() {
atomic.StoreInt32(&stop, 1)
}()
go func() {
for {
if atomic.LoadInt32(&stop) > 0 {
l.Info("UDP Crash stop signal received. Stopping.")
return
}
conn, err := net.Dial("udp", address)
assert.NoError(t, err)
defer conn.Close() // nolint: errcheck
_, err = conn.Write([]byte("CRASH"))
if err != nil {
l.WithError(err).Warn("error sending udp packet. Stopping.")
return
}
l.WithField("address", address).Info("sent UDP packet")
time.Sleep(5 * time.Second)
}
}()
_, err = framework.WaitForGameServerState(t, readyGs, agonesv1.GameServerStateUnhealthy, 3*time.Minute)
assert.NoError(t, err)
}
func TestDevelopmentGameServerLifecycle(t *testing.T) {
t.Parallel()
ctx := context.Background()
labels := map[string]string{"development": "true"}
gs := &agonesv1.GameServer{
ObjectMeta: metav1.ObjectMeta{
GenerateName: "udp-server",
Namespace: framework.Namespace,
Annotations: map[string]string{agonesv1.DevAddressAnnotation: fakeIPAddress},
Labels: labels,
},
Spec: agonesv1.GameServerSpec{
Container: "udp-server",
Ports: []agonesv1.GameServerPort{{
ContainerPort: 7654,
HostPort: 7654,
Name: "gameport",
PortPolicy: agonesv1.Static,
Protocol: corev1.ProtocolUDP,
}},
Template: corev1.PodTemplateSpec{
Spec: corev1.PodSpec{
Containers: []corev1.Container{{
Name: "placebo",
Image: "this is ignored",
}},
},
},
},
}
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs.DeepCopy())
if err != nil {
t.Fatalf("Could not get a GameServer ready: %v", err)
}
require.Equal(t, readyGs.Status.State, agonesv1.GameServerStateReady)
// confirm delete works, because if the finalisers don't get removed, this won't work.
err = framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Delete(ctx, readyGs.ObjectMeta.Name, metav1.DeleteOptions{})
require.NoError(t, err)
err = wait.PollImmediate(time.Second, time.Minute, func() (bool, error) {
_, err = framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Get(ctx, readyGs.ObjectMeta.Name, metav1.GetOptions{})
if k8serrors.IsNotFound(err) {
return true, nil
}
return false, err
})
require.NoError(t, err)
// let's make sure we can allocate a dev gameserver
readyGs, err = framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs.DeepCopy())
require.NoError(t, err)
gsa := &allocationv1.GameServerAllocation{
Spec: allocationv1.GameServerAllocationSpec{
Selectors: []allocationv1.GameServerSelector{{
LabelSelector: metav1.LabelSelector{MatchLabels: labels},
}},
},
}
gsa, err = framework.AgonesClient.AllocationV1().GameServerAllocations(framework.Namespace).Create(ctx, gsa, metav1.CreateOptions{})
require.NoError(t, err)
require.Equal(t, readyGs.ObjectMeta.Name, gsa.Status.GameServerName)
_, err = framework.WaitForGameServerState(t, readyGs, agonesv1.GameServerStateAllocated, time.Minute)
require.NoError(t, err)
// Also confirm that delete works for Allocated state, it should be fine but let's be sure.
err = framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Delete(ctx, readyGs.ObjectMeta.Name, metav1.DeleteOptions{})
require.NoError(t, err)
err = wait.PollImmediate(time.Second, time.Minute, func() (bool, error) {
_, err = framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Get(ctx, readyGs.ObjectMeta.Name, metav1.GetOptions{})
if k8serrors.IsNotFound(err) {
return true, nil
}
return false, err
})
require.NoError(t, err)
}
func TestGameServerSelfAllocate(t *testing.T) {
t.Parallel()
ctx := context.Background()
gs := framework.DefaultGameServer(framework.Namespace)
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
t.Fatalf("Could not get a GameServer ready: %v", err)
}
defer framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Delete(ctx, readyGs.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint: errcheck
assert.Equal(t, readyGs.Status.State, agonesv1.GameServerStateReady)
reply, err := framework.SendGameServerUDP(t, readyGs, "ALLOCATE")
if err != nil {
t.Fatalf("Could not message GameServer: %v", err)
}
assert.Equal(t, "ACK: ALLOCATE\n", reply)
gs, err = framework.WaitForGameServerState(t, readyGs, agonesv1.GameServerStateAllocated, time.Minute)
if assert.NoError(t, err) {
assert.Equal(t, agonesv1.GameServerStateAllocated, gs.Status.State)
}
}
func TestGameServerReadyAllocateReady(t *testing.T) {
t.Parallel()
ctx := context.Background()
logger := e2eframework.TestLogger(t)
gs := framework.DefaultGameServer(framework.Namespace)
logger.Info("Moving to Ready")
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
require.NoError(t, err, "Could not get a GameServer ready")
logger = logger.WithField("gs", readyGs.ObjectMeta.Name)
defer framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Delete(ctx, readyGs.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint: errcheck
require.Equal(t, readyGs.Status.State, agonesv1.GameServerStateReady)
logger.Info("Moving to Allocated")
reply, err := framework.SendGameServerUDP(t, readyGs, "ALLOCATE")
require.NoError(t, err, "Could not message GameServer")
require.Equal(t, "ACK: ALLOCATE\n", reply)
gs, err = framework.WaitForGameServerState(t, readyGs, agonesv1.GameServerStateAllocated, time.Minute)
require.NoError(t, err)
require.Equal(t, agonesv1.GameServerStateAllocated, gs.Status.State)
logger.Info("Moving to Ready again")
reply, err = framework.SendGameServerUDP(t, readyGs, "READY")
require.NoError(t, err, "Could not message GameServer")
require.Equal(t, "ACK: READY\n", reply)
gs, err = framework.WaitForGameServerState(t, gs, agonesv1.GameServerStateReady, time.Minute)
require.NoError(t, err)
require.Equal(t, agonesv1.GameServerStateReady, gs.Status.State)
}
func TestGameServerWithPortsMappedToMultipleContainers(t *testing.T) {
t.Parallel()
ctx := context.Background()
firstContainerName := "udp-server"
secondContainerName := "second-udp-server"
firstPort := "gameport"
secondPort := "second-gameport"
gs := &agonesv1.GameServer{ObjectMeta: metav1.ObjectMeta{GenerateName: "udp-server", Namespace: framework.Namespace},
Spec: agonesv1.GameServerSpec{
Container: firstContainerName,
Ports: []agonesv1.GameServerPort{{
ContainerPort: 7654,
Name: firstPort,
PortPolicy: agonesv1.Dynamic,
Protocol: corev1.ProtocolUDP,
}, {
ContainerPort: 5000,
Name: secondPort,
PortPolicy: agonesv1.Dynamic,
Protocol: corev1.ProtocolUDP,
Container: &secondContainerName,
}},
Template: corev1.PodTemplateSpec{
Spec: corev1.PodSpec{
Containers: []corev1.Container{
{
Name: firstContainerName,
Image: framework.GameServerImage,
ImagePullPolicy: corev1.PullIfNotPresent,
},
{
Name: secondContainerName,
Image: framework.GameServerImage,
ImagePullPolicy: corev1.PullIfNotPresent,
Args: []string{"-port", "5000"},
},
},
},
},
},
}
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
t.Fatalf("Could not get a GameServer ready: %v", err)
}
defer framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Delete(ctx, readyGs.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint: errcheck
assert.Equal(t, readyGs.Status.State, agonesv1.GameServerStateReady)
interval := 2 * time.Second
timeOut := 60 * time.Second
expectedMsg1 := "Ping 1"
errPoll := wait.PollImmediate(interval, timeOut, func() (done bool, err error) {
res, err := framework.SendGameServerUDPToPort(t, readyGs, firstPort, expectedMsg1)
if err != nil {
t.Logf("Could not message GameServer on %s: %v. Will try again...", firstPort, err)
}
return err == nil && strings.Contains(res, expectedMsg1), nil
})
if errPoll != nil {
assert.FailNow(t, errPoll.Error(), "expected no errors after polling a port: %s", firstPort)
}
expectedMsg2 := "Ping 2"
errPoll = wait.PollImmediate(interval, timeOut, func() (done bool, err error) {
res, err := framework.SendGameServerUDPToPort(t, readyGs, secondPort, expectedMsg2)
if err != nil {
t.Logf("Could not message GameServer on %s: %v. Will try again...", secondPort, err)
}
return err == nil && strings.Contains(res, expectedMsg2), nil
})
assert.NoError(t, errPoll, "expected no errors after polling a port: %s", secondPort)
}
func TestGameServerReserve(t *testing.T) {
t.Parallel()
ctx := context.Background()
// We are deliberately not trying to test the transition between Reserved -> Ready.
//
// We have found that trying to catch the GameServer in the Reserved state can be flaky,
// as we can't control the speed in which the Kubernetes API is going to reply to request,
// and we could sometimes miss when the GameServer is in the Reserved State before it goes to Ready.
//
// Therefore we are going to test for concrete states that we don't need to catch while
// in a transitive state.
gs := framework.DefaultGameServer(framework.Namespace)
gs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
assert.FailNow(t, "Could not get a GameServer ready", err.Error())
}
defer framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Delete(ctx, gs.ObjectMeta.Name, metav1.DeleteOptions{}) // nolint: errcheck
assert.Equal(t, gs.Status.State, agonesv1.GameServerStateReady)
reply, err := framework.SendGameServerUDP(t, gs, "RESERVE 0")
if err != nil {
assert.FailNow(t, "Could not message GameServer", err.Error())
}
assert.Equal(t, "ACK: RESERVE 0\n", reply)
gs, err = framework.WaitForGameServerState(t, gs, agonesv1.GameServerStateReserved, 3*time.Minute)
if err != nil {
assert.FailNow(t, "Time out on waiting for gs in a Reserved state", err.Error())
}
reply, err = framework.SendGameServerUDP(t, gs, "ALLOCATE")
if err != nil {
assert.FailNow(t, "Could not message GameServer", err.Error())
}
assert.Equal(t, "ACK: ALLOCATE\n", reply)
// put it in a totally different state, just to reset things.
gs, err = framework.WaitForGameServerState(t, gs, agonesv1.GameServerStateAllocated, 3*time.Minute)
if err != nil {
assert.FailNow(t, "Time out on waiting for gs in an Allocated state", err.Error())
}
reply, err = framework.SendGameServerUDP(t, gs, "RESERVE 5s")
if err != nil {
assert.FailNow(t, "Could not message GameServer", err.Error())
}
assert.Equal(t, "ACK: RESERVE 5s\n", reply)
// sleep, since we're going to wait for the Ready response.
time.Sleep(5 * time.Second)
_, err = framework.WaitForGameServerState(t, gs, agonesv1.GameServerStateReady, 3*time.Minute)
assert.NoError(t, err)
}
func TestGameServerShutdown(t *testing.T) {
t.Parallel()
ctx := context.Background()
gs := framework.DefaultGameServer(framework.Namespace)
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
t.Fatalf("Could not get a GameServer ready: %v", err)
}
assert.Equal(t, readyGs.Status.State, agonesv1.GameServerStateReady)
reply, err := framework.SendGameServerUDP(t, readyGs, "EXIT")
if err != nil {
t.Fatalf("Could not message GameServer: %v", err)
}
assert.Equal(t, "ACK: EXIT\n", reply)
err = wait.PollImmediate(time.Second, 3*time.Minute, func() (bool, error) {
gs, err = framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Get(ctx, readyGs.ObjectMeta.Name, metav1.GetOptions{})
if k8serrors.IsNotFound(err) {
return true, nil
}
return false, err
})
assert.NoError(t, err)
}
// TestGameServerEvicted test that if Gameserver would be evicted than it becomes Unhealthy
// Ephemeral Storage limit set to 0Mi
func TestGameServerEvicted(t *testing.T) {
t.Parallel()
ctx := context.Background()
gs := framework.DefaultGameServer(framework.Namespace)
gs.Spec.Template.Spec.Containers[0].Resources.Limits[corev1.ResourceEphemeralStorage] = resource.MustParse("0Mi")
newGs, err := framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Create(ctx, gs, metav1.CreateOptions{})
if err != nil {
assert.FailNow(t, fmt.Sprintf("creating %v GameServer instances failed (%v): %v", gs.Spec, gs.Name, err))
}
logrus.WithField("name", newGs.ObjectMeta.Name).Info("GameServer created, waiting for being Evicted and Unhealthy")
_, err = framework.WaitForGameServerState(t, newGs, agonesv1.GameServerStateUnhealthy, 5*time.Minute)
assert.Nil(t, err, fmt.Sprintf("waiting for %v GameServer Unhealthy state timed out (%v): %v", gs.Spec, gs.Name, err))
}
func TestGameServerPassthroughPort(t *testing.T) {
t.Parallel()
gs := framework.DefaultGameServer(framework.Namespace)
gs.Spec.Ports[0] = agonesv1.GameServerPort{PortPolicy: agonesv1.Passthrough}
gs.Spec.Template.Spec.Containers[0].Env = []corev1.EnvVar{{Name: "PASSTHROUGH", Value: "TRUE"}}
// gate
_, valid := gs.Validate()
assert.True(t, valid)
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
assert.FailNow(t, "Could not get a GameServer ready", err.Error())
}
port := readyGs.Spec.Ports[0]
assert.Equal(t, agonesv1.Passthrough, port.PortPolicy)
assert.NotEmpty(t, port.HostPort)
assert.Equal(t, port.HostPort, port.ContainerPort)
reply, err := framework.SendGameServerUDP(t, readyGs, "Hello World !")
if err != nil {
t.Fatalf("Could ping GameServer: %v", err)
}
assert.Equal(t, "ACK: Hello World !\n", reply)
}
func TestGameServerTcpProtocol(t *testing.T) {
t.Parallel()
gs := framework.DefaultGameServer(framework.Namespace)
gs.Spec.Ports[0].Protocol = corev1.ProtocolTCP
gs.Spec.Template.Spec.Containers[0].Env = []corev1.EnvVar{{Name: "TCP", Value: "TRUE"}}
_, valid := gs.Validate()
require.True(t, valid)
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
require.NoError(t, err)
replyTCP, err := e2eframework.SendGameServerTCP(readyGs, "Hello World !")
require.NoError(t, err)
assert.Equal(t, "ACK TCP: Hello World !\n", replyTCP)
}
func TestGameServerTcpUdpProtocol(t *testing.T) {
t.Parallel()
gs := framework.DefaultGameServer(framework.Namespace)
gs.Spec.Ports[0].Protocol = agonesv1.ProtocolTCPUDP
gs.Spec.Ports[0].Name = "gameserver"
gs.Spec.Template.Spec.Containers[0].Env = []corev1.EnvVar{{Name: "TCP", Value: "TRUE"}}
_, valid := gs.Validate()
assert.True(t, valid)
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
assert.FailNow(t, "Could not get a GameServer ready", err.Error())
}
tcpPort := readyGs.Spec.Ports[0]
assert.Equal(t, corev1.ProtocolTCP, tcpPort.Protocol)
assert.NotEmpty(t, tcpPort.HostPort)
assert.Equal(t, "gameserver-tcp", tcpPort.Name)
udpPort := readyGs.Spec.Ports[1]
assert.Equal(t, corev1.ProtocolUDP, udpPort.Protocol)
assert.NotEmpty(t, udpPort.HostPort)
assert.Equal(t, "gameserver-udp", udpPort.Name)
assert.Equal(t, tcpPort.HostPort, udpPort.HostPort)
logrus.WithField("name", readyGs.ObjectMeta.Name).Info("GameServer created, sending UDP ping")
replyUDP, err := framework.SendGameServerUDPToPort(t, readyGs, udpPort.Name, "Hello World !")
require.NoError(t, err)
if err != nil {
t.Fatalf("Could not ping UDP GameServer: %v", err)
}
assert.Equal(t, "ACK: Hello World !\n", replyUDP)
logrus.WithField("name", readyGs.ObjectMeta.Name).Info("UDP ping passed, sending TCP ping")
replyTCP, err := e2eframework.SendGameServerTCPToPort(readyGs, tcpPort.Name, "Hello World !")
if err != nil {
t.Fatalf("Could not ping TCP GameServer: %v", err)
}
assert.Equal(t, "ACK TCP: Hello World !\n", replyTCP)
}
func TestGameServerWithoutPort(t *testing.T) {
t.Parallel()
gs := framework.DefaultGameServer(framework.Namespace)
gs.Spec.Ports = nil
_, valid := gs.Validate()
assert.True(t, valid)
readyGs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
require.NoError(t, err, "Could not get a GameServer ready")
assert.Empty(t, readyGs.Spec.Ports)
}
// TestGameServerResourceValidation - check that we are not able to use
// invalid PodTemplate for GameServer Spec with wrong Resource Requests and Limits
func TestGameServerResourceValidation(t *testing.T) {
t.Parallel()
ctx := context.Background()
gs := framework.DefaultGameServer(framework.Namespace)
mi64 := resource.MustParse("64Mi")
gs.Spec.Template.Spec.Containers[0].Resources.Limits[corev1.ResourceMemory] = mi64
gs.Spec.Template.Spec.Containers[0].Resources.Requests[corev1.ResourceMemory] = resource.MustParse("128Mi")
_, valid := gs.Validate()
assert.False(t, valid)
gsClient := framework.AgonesClient.AgonesV1().GameServers(framework.Namespace)
_, err := gsClient.Create(ctx, gs.DeepCopy(), metav1.CreateOptions{})
assert.NotNil(t, err)
statusErr, ok := err.(*k8serrors.StatusError)
assert.True(t, ok)
assert.Len(t, statusErr.Status().Details.Causes, 1)
assert.Equal(t, metav1.CauseTypeFieldValueInvalid, statusErr.Status().Details.Causes[0].Type)
assert.Equal(t, "container", statusErr.Status().Details.Causes[0].Field)
gs.Spec.Template.Spec.Containers[0].Resources.Requests[corev1.ResourceCPU] = resource.MustParse("-50m")
_, err = gsClient.Create(ctx, gs.DeepCopy(), metav1.CreateOptions{})
assert.NotNil(t, err)
statusErr, ok = err.(*k8serrors.StatusError)
assert.True(t, ok)
assert.Len(t, statusErr.Status().Details.Causes, 2)
assert.Equal(t, metav1.CauseTypeFieldValueInvalid, statusErr.Status().Details.Causes[0].Type)
assert.Equal(t, "container", statusErr.Status().Details.Causes[0].Field)
// test that values are still being set correctly
m50 := resource.MustParse("50m")
gs.Spec.Template.Spec.Containers[0].Resources.Limits[corev1.ResourceMemory] = mi64
gs.Spec.Template.Spec.Containers[0].Resources.Requests[corev1.ResourceMemory] = mi64
gs.Spec.Template.Spec.Containers[0].Resources.Requests[corev1.ResourceCPU] = m50
gs.Spec.Template.Spec.Containers[0].Resources.Limits[corev1.ResourceCPU] = m50
// confirm we have a valid GameServer before running the test
cause, valid := gs.Validate()
require.True(t, valid, cause)
gsCopy, err := gsClient.Create(ctx, gs.DeepCopy(), metav1.CreateOptions{})
require.NoError(t, err)
assert.Equal(t, mi64, gsCopy.Spec.Template.Spec.Containers[0].Resources.Limits[corev1.ResourceMemory])
assert.Equal(t, mi64, gsCopy.Spec.Template.Spec.Containers[0].Resources.Requests[corev1.ResourceMemory])
assert.Equal(t, m50, gsCopy.Spec.Template.Spec.Containers[0].Resources.Requests[corev1.ResourceCPU])
assert.Equal(t, m50, gsCopy.Spec.Template.Spec.Containers[0].Resources.Limits[corev1.ResourceCPU])
}
func TestGameServerPodTemplateSpecFailSchemaValidation(t *testing.T) {
t.Parallel()
// The Kubernetes dynamic client skips schema validation (for reasons I'm not sure of), so the
// best way I could determine to test schema validation is via calling kubectl directly.
// The schema's from Kubernetes don't include anything like `pattern:` or `enum:` which would
// potentially make this easier to test.
gsYaml := `
apiVersion: "agones.dev/v1"
kind: GameServer
metadata:
name: "invalid-gameserver"
spec:
ports:
- name: default
portPolicy: Dynamic
containerPort: 7654
template:
spec:
affinity:
nodeAffinity:
preferredDuringSchedulingIgnoredDuringExecution: ERROR
containers:
- name: simple-game-server
image: gcr.io/agones-images/simple-game-server:0.13
`
err := ioutil.WriteFile("/tmp/invalid.yaml", []byte(gsYaml), 0o644)
require.NoError(t, err)
cmd := exec.Command("kubectl", "apply", "-f", "/tmp/invalid.yaml")
var stdout bytes.Buffer
var stderr bytes.Buffer
cmd.Stdout = &stdout
cmd.Stderr = &stderr
err = cmd.Run()
logrus.WithField("stdout", stdout.String()).WithField("stderr", stderr.String()).WithError(err).Info("Ran command!")
require.Error(t, err)
assert.Contains(t, stderr.String(), "ValidationError(GameServer.spec.template.spec.affinity.nodeAffinity.preferredDuringSchedulingIgnoredDuringExecution)")
}
func TestGameServerSetPlayerCapacity(t *testing.T) {
if !runtime.FeatureEnabled(runtime.FeaturePlayerTracking) {
t.SkipNow()
}
t.Parallel()
ctx := context.Background()
t.Run("no initial capacity set", func(t *testing.T) {
gs := framework.DefaultGameServer(framework.Namespace)
gs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
t.Fatalf("Could not get a GameServer ready: %v", err)
}
assert.Equal(t, gs.Status.State, agonesv1.GameServerStateReady)
assert.Equal(t, int64(0), gs.Status.Players.Capacity)
reply, err := framework.SendGameServerUDP(t, gs, "PLAYER_CAPACITY")
if err != nil {
t.Fatalf("Could not message GameServer: %v", err)
}
assert.Equal(t, "0\n", reply)
reply, err = framework.SendGameServerUDP(t, gs, "PLAYER_CAPACITY 20")
if err != nil {
t.Fatalf("Could not message GameServer: %v", err)
}
assert.Equal(t, "ACK: PLAYER_CAPACITY 20\n", reply)
reply, err = framework.SendGameServerUDP(t, gs, "PLAYER_CAPACITY")
if err != nil {
t.Fatalf("Could not message GameServer: %v", err)
}
assert.Equal(t, "20\n", reply)
err = wait.PollImmediate(time.Second, time.Minute, func() (bool, error) {
gs, err := framework.AgonesClient.AgonesV1().GameServers(framework.Namespace).Get(ctx, gs.ObjectMeta.Name, metav1.GetOptions{})
if err != nil {
return false, err
}
return gs.Status.Players.Capacity == 20, nil
})
assert.NoError(t, err)
})
t.Run("initial capacity set", func(t *testing.T) {
gs := framework.DefaultGameServer(framework.Namespace)
gs.Spec.Players = &agonesv1.PlayersSpec{InitialCapacity: 10}
gs, err := framework.CreateGameServerAndWaitUntilReady(t, framework.Namespace, gs)
if err != nil {
t.Fatalf("Could not get a GameServer ready: %v", err)
}
assert.Equal(t, gs.Status.State, agonesv1.GameServerStateReady)
assert.Equal(t, int64(10), gs.Status.Players.Capacity)
reply, err := framework.SendGameServerUDP(t, gs, "PLAYER_CAPACITY")
if err != nil {
t.Fatalf("Could not message GameServer: %v", err)
}
assert.Equal(t, "10\n", reply)