Add a simple helm test

This could be useful for Terraform configs check that installation
was completed, for example after switching to a new cluster.

examples/crd-client/Makefile

@@ -25,7 +25,7 @@
 
 REPOSITORY ?= gcr.io/agones-images
 
-server_tag = $(REPOSITORY)/crd-client:0.2
+server_tag = $(REPOSITORY)/crd-client:0.3
 
 #   _____                    _
 #  |_   _|_ _ _ __ __ _  ___| |_ ___

examples/crd-client/go.mod

@@ -9,6 +9,7 @@ require (
 	github.com/gregjones/httpcache v0.0.0-20190611155906-901d90724c79 // indirect
 	github.com/json-iterator/go v1.1.8 // indirect
 	github.com/modern-go/reflect2 v1.0.1 // indirect
+	github.com/sirupsen/logrus v1.2.0
 	github.com/spf13/afero v1.2.2 // indirect
 	github.com/spf13/pflag v1.0.3
 	github.com/spf13/viper v1.3.1

examples/crd-client/go.sum

@@ -224,6 +224,7 @@ google.golang.org/appengine v1.0.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9Ywl
 google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
 google.golang.org/appengine v1.3.0 h1:FBSsiFRMz3LBeXIomRnVzrQwSDj4ibvcRexLG0LZGQk=
 google.golang.org/appengine v1.3.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
+google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO508=
 google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
 google.golang.org/genproto v0.0.0-20180601223552-81158efcc9f2/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=

examples/crd-client/main.go

@@ -15,8 +15,10 @@
 package main
 
 import (
-	"fmt"
 	"strings"
+	"time"
+
+	"github.com/sirupsen/logrus"
 
 	agonesv1 "agones.dev/agones/pkg/apis/agones/v1"
 	"agones.dev/agones/pkg/client/clientset/versioned"
@@ -30,19 +32,30 @@ import (
 )
 
 const (
-	gameServerImage = "GAMESERVER_IMAGE"
+	gameServerImage      = "GAMESERVER_IMAGE"
+	isHelmTest           = "IS_HELM_TEST"
+	gameserversNamespace = "GAMESERVERS_NAMESPACE"
 
 	defaultImage = "gcr.io/agones-images/udp-server:0.19"
+	defaultNs    = "default"
 )
 
 func main() {
 	viper.AllowEmptyEnv(true)
 	viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_"))
 
-	pflag.String(gameServerImage, viper.GetString(gameServerImage), "The Address to bind the server grpcPort to. Defaults to 'localhost'")
+	pflag.String(gameServerImage, defaultImage, "The Address to bind the server grpcPort to. Defaults to 'localhost'")
 	viper.SetDefault(gameServerImage, defaultImage)
 	runtime.Must(viper.BindEnv(gameServerImage))
-	viper.GetString(gameServerImage)
+
+	pflag.Bool(isHelmTest, false, "Is helm test - shutdown GameServer at the end of test. Defaults to false")
+	viper.SetDefault(isHelmTest, false)
+	runtime.Must(viper.BindEnv(isHelmTest))
+
+	pflag.String(gameserversNamespace, defaultNs, "Namespace where GameServers are created. Defaults to default")
+	viper.SetDefault(gameserversNamespace, defaultNs)
+	runtime.Must(viper.BindEnv(gameserversNamespace))
+
 	config, err := rest.InClusterConfig()
 	logger := runtime.NewLoggerWithSource("main")
 	if err != nil {
@@ -66,8 +79,17 @@ func main() {
 		logger.WithError(err).Fatal("Could not create the agones api clientset")
 	}
 
+	gsName := "helm-test-server-"
+
 	// Create a GameServer
-	gs := &agonesv1.GameServer{ObjectMeta: metav1.ObjectMeta{GenerateName: "udp-server", Namespace: "default"},
+	gs := &agonesv1.GameServer{
+		ObjectMeta: metav1.ObjectMeta{
+			GenerateName: gsName,
+			Namespace:    viper.GetString(gameserversNamespace),
+			Labels: map[string]string{
+				labelKey: labelValue,
+			},
+		},
 		Spec: agonesv1.GameServerSpec{
 			Container: "udp-server",
 			Ports: []agonesv1.GameServerPort{{
@@ -79,15 +101,27 @@ func main() {
 			}},
 			Template: corev1.PodTemplateSpec{
 				Spec: corev1.PodSpec{
-					Containers: []corev1.Container{{Name: "udp-server", Image: viper.GetString(gameServerImage)}},
+					Containers: []corev1.Container{
+						{
+							Name:  "udp-server",
+							Image: viper.GetString(gameServerImage),
+						},
+					},
 				},
 			},
 		},
 	}
-	newGS, err := agonesClient.AgonesV1().GameServers("default").Create(gs)
+	newGS, err := agonesClient.AgonesV1().GameServers(defaultNs).Create(gs)
 	if err != nil {
 		panic(err)
 	}
+	logrus.Infof("New GameServer name is: %s", newGS.ObjectMeta.Name)
 
-	fmt.Printf("New game servers' name is: %s", newGS.ObjectMeta.Name)
+	if viper.GetBool(isHelmTest) {
+		time.Sleep(1 * time.Second)
+		err = agonesClient.AgonesV1().GameServers(defaultNs).Delete(newGS.ObjectMeta.Name, nil) // nolint: errcheck
+		if err != nil {
+			panic(err)
+		}
+	}
 }

install/helm/agones/templates/tests/test-runner.yaml

@@ -0,0 +1,36 @@
+# Copyright 2020 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.
+
+apiVersion: v1
+kind: Pod
+metadata:
+  name: "{{ .Release.Name }}-test-{{ randAlphaNum 5 | lower }}"
+  namespace: agones-system
+  annotations:
+    "helm.sh/hook": test-success
+    "helm.sh/hook-delete-policy": hook-succeeded
+spec:
+  serviceAccountName: agones-controller
+  containers:
+  - name: create-gameserver
+    image: gcr.io/agones-images/crd-client:0.3
+    imagePullPolicy: Always
+    env:
+    - name: GAMESERVER_IMAGE
+      value: "gcr.io/agones-images/udp-server:0.19"
+    - name: IS_HELM_TEST
+      value: "true"
+    - name: GAMESERVERS_NAMESPACE
+      value: "{{ index .Values.gameservers.namespaces 0 }}"
+  restartPolicy: Never