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affinity.go
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affinity.go
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/*
Copyright 2017 The Kubernetes 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 annotations
import (
"context"
"crypto/tls"
"fmt"
"net/http"
"strings"
"time"
"github.com/onsi/ginkgo/v2"
"github.com/stretchr/testify/assert"
networking "k8s.io/api/networking/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/ingress-nginx/test/e2e/framework"
)
const (
affinityAnnotation = "cookie"
cookieName = "SERVERID"
enableAnnotation = "true"
disableAnnotation = "false"
defaultHost = "foo.com"
)
var _ = framework.DescribeAnnotation("affinity session-cookie-name", func() {
f := framework.NewDefaultFramework("affinity")
ginkgo.BeforeEach(func() {
f.NewEchoDeployment(framework.WithDeploymentReplicas(2))
})
ginkgo.It("should set sticky cookie SERVERID", func() {
host := "sticky.foo.com"
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = cookieName
ing := framework.NewSingleIngress(host, "/", host, f.Namespace, framework.EchoService, 80, annotations)
f.EnsureIngress(ing)
f.WaitForNginxServer(host,
func(server string) bool {
return strings.Contains(server, fmt.Sprintf("server_name %s ;", host))
})
f.HTTPTestClient().
GET("/").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("SERVERID=")
})
ginkgo.It("should change cookie name on ingress definition change", func() {
host := "change.foo.com"
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = cookieName
ing := framework.NewSingleIngress(host, "/", host, f.Namespace, framework.EchoService, 80, annotations)
f.EnsureIngress(ing)
f.WaitForNginxServer(host,
func(server string) bool {
return strings.Contains(server, fmt.Sprintf("server_name %s ;", host))
})
f.HTTPTestClient().
GET("/").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains(cookieName)
ing.ObjectMeta.Annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = "OTHERCOOKIENAME"
_, err := f.KubeClientSet.NetworkingV1().Ingresses(f.Namespace).Update(context.TODO(), ing, metav1.UpdateOptions{})
assert.Nil(ginkgo.GinkgoT(), err, "updating ingress")
framework.Sleep()
f.HTTPTestClient().
GET("/").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("OTHERCOOKIENAME")
})
ginkgo.It("should set the path to /something on the generated cookie", func() {
host := "path.foo.com"
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = cookieName
ing := framework.NewSingleIngress(host, "/something", host, f.Namespace, framework.EchoService, 80, annotations)
f.EnsureIngress(ing)
f.WaitForNginxServer(host,
func(server string) bool {
return strings.Contains(server, fmt.Sprintf("server_name %s ;", host))
})
f.HTTPTestClient().
GET("/something").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("Path=/something")
})
ginkgo.It("does not set the path to / on the generated cookie if there's more than one rule referring to the same backend", func() {
pathtype := networking.PathTypePrefix
host := "morethanonerule.foo.com"
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = cookieName
f.EnsureIngress(&networking.Ingress{
ObjectMeta: metav1.ObjectMeta{
Name: host,
Namespace: f.Namespace,
Annotations: annotations,
},
Spec: networking.IngressSpec{
IngressClassName: &f.IngressClass,
Rules: []networking.IngressRule{
{
Host: host,
IngressRuleValue: networking.IngressRuleValue{
HTTP: &networking.HTTPIngressRuleValue{
Paths: []networking.HTTPIngressPath{
{
Path: "/something",
PathType: &pathtype,
Backend: networking.IngressBackend{
Service: &networking.IngressServiceBackend{
Name: framework.EchoService,
Port: networking.ServiceBackendPort{
Number: int32(80),
},
},
},
},
{
Path: "/somewhereelse",
PathType: &pathtype,
Backend: networking.IngressBackend{
Service: &networking.IngressServiceBackend{
Name: framework.EchoService,
Port: networking.ServiceBackendPort{
Number: int32(80),
},
},
},
},
},
},
},
},
},
},
})
f.WaitForNginxServer(host,
func(server string) bool {
return strings.Contains(server, fmt.Sprintf("server_name %s ;", host))
})
f.HTTPTestClient().
GET("/something").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("Path=/something")
f.HTTPTestClient().
GET("/somewhereelse").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("Path=/somewhereelse")
})
ginkgo.It("should set cookie with expires", func() {
host := "cookieexpires.foo.com"
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = "ExpiresCookie"
annotations["nginx.ingress.kubernetes.io/session-cookie-expires"] = "172800"
annotations["nginx.ingress.kubernetes.io/session-cookie-max-age"] = "259200"
ing := framework.NewSingleIngress(host, "/", host, f.Namespace, framework.EchoService, 80, annotations)
f.EnsureIngress(ing)
f.WaitForNginxServer(host,
func(server string) bool {
return strings.Contains(server, fmt.Sprintf("server_name %s ;", host))
})
local, err := time.LoadLocation("GMT")
assert.Nil(ginkgo.GinkgoT(), err, "loading GMT location")
assert.NotNil(ginkgo.GinkgoT(), local, "expected a location but none returned")
duration, err := time.ParseDuration("48h")
assert.Nil(ginkgo.GinkgoT(), err, "parsing duration")
expected := time.Now().In(local).Add(duration).Format("Mon, 02-Jan-06 15:04")
f.HTTPTestClient().
GET("/").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains(fmt.Sprintf("Expires=%s", expected)).Contains("Max-Age=259200")
})
ginkgo.It("should set cookie with domain", func() {
host := "cookiedomain.foo.com"
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = "DomainCookie"
annotations["nginx.ingress.kubernetes.io/session-cookie-domain"] = "foo.bar"
ing := framework.NewSingleIngress(host, "/", host, f.Namespace, framework.EchoService, 80, annotations)
f.EnsureIngress(ing)
f.WaitForNginxServer(host,
func(server string) bool {
return strings.Contains(server, fmt.Sprintf("server_name %s ;", host))
})
f.HTTPTestClient().
GET("/").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("Domain=foo.bar")
})
ginkgo.It("should not set cookie without domain annotation", func() {
host := "cookienodomain.foo.com"
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = "NoDomainCookie"
ing := framework.NewSingleIngress(host, "/", host, f.Namespace, framework.EchoService, 80, annotations)
f.EnsureIngress(ing)
f.WaitForNginxServer(host,
func(server string) bool {
return strings.Contains(server, fmt.Sprintf("server_name %s ;", host))
})
f.HTTPTestClient().
GET("/").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").NotContains("; Domain")
})
ginkgo.It("should work with use-regex annotation and session-cookie-path", func() {
host := "useregex.foo.com"
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = cookieName
annotations["nginx.ingress.kubernetes.io/use-regex"] = enableAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-path"] = "/foo/bar"
ing := framework.NewSingleIngress(host, "/foo/.*", host, f.Namespace, framework.EchoService, 80, annotations)
f.EnsureIngress(ing)
f.WaitForNginxServer(host,
func(server string) bool {
return strings.Contains(server, fmt.Sprintf("server_name %s ;", host))
})
f.HTTPTestClient().
GET("/foo/bar").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("Path=/foo/bar").Contains("SERVERID=")
})
ginkgo.It("should warn user when use-regex is true and session-cookie-path is not set", func() {
host := "useregexwarn.foo.com"
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = cookieName
annotations["nginx.ingress.kubernetes.io/use-regex"] = enableAnnotation
ing := framework.NewSingleIngress(host, "/foo/.*", host, f.Namespace, framework.EchoService, 80, annotations)
f.EnsureIngress(ing)
f.WaitForNginxServer(host,
func(server string) bool {
return strings.Contains(server, fmt.Sprintf("server_name %s ;", host))
})
f.HTTPTestClient().
GET("/foo/bar").
WithHeader("Host", host).
Expect().
Status(http.StatusOK)
logs, err := f.NginxLogs()
assert.Nil(ginkgo.GinkgoT(), err, "obtaining nginx logs")
assert.Contains(ginkgo.GinkgoT(), logs, `session-cookie-path should be set when use-regex is true`)
})
ginkgo.It("should not set affinity across all server locations when using separate ingresses", func() {
host := "separate.foo.com"
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
ing1 := framework.NewSingleIngress("ingress1", "/foo/bar", host, f.Namespace, framework.EchoService, 80, annotations)
f.EnsureIngress(ing1)
ing2 := framework.NewSingleIngress("ingress2", "/foo", host, f.Namespace, framework.EchoService, 80, nil)
f.EnsureIngress(ing2)
f.WaitForNginxServer(host,
func(server string) bool {
return strings.Contains(server, `location /foo/bar`) && strings.Contains(server, `location /foo`)
})
f.HTTPTestClient().
GET("/foo").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Empty()
f.HTTPTestClient().
GET("/foo/bar").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("Path=/foo/bar")
})
ginkgo.It("should set sticky cookie without host", func() {
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = cookieName
ing := framework.NewSingleIngress("default-no-host", "/", "", f.Namespace, framework.EchoService, 80, annotations)
f.EnsureIngress(ing)
f.WaitForNginxServer("_",
func(server string) bool {
return strings.Contains(server, "server_name _")
})
f.HTTPTestClient().
GET("/").
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("SERVERID=")
})
ginkgo.It("should work with server-alias annotation", func() {
host := defaultHost
alias1 := "a1.foo.com"
alias2 := "a2.foo.com"
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = cookieName
annotations["nginx.ingress.kubernetes.io/server-alias"] = fmt.Sprintf("%s,%s", alias1, alias2)
ing := framework.NewSingleIngress(host, "/bar", host, f.Namespace, framework.EchoService, 80, annotations)
f.EnsureIngress(ing)
f.WaitForNginxServer(host,
func(server string) bool {
// server alias sort by sort.Strings(), see: internal/ingress/annotations/alias/main.go:60
return strings.Contains(server, fmt.Sprintf("server_name %s %s %s ;", host, alias1, alias2))
})
f.HTTPTestClient().
GET("/bar").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("SERVERID=")
f.HTTPTestClient().
GET("/bar").
WithHeader("Host", alias1).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("SERVERID=")
f.HTTPTestClient().
GET("/bar").
WithHeader("Host", alias2).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("SERVERID=")
})
ginkgo.It("should set secure in cookie with provided true annotation on http", func() {
host := defaultHost
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = cookieName
annotations["nginx.ingress.kubernetes.io/session-cookie-secure"] = enableAnnotation
ing := framework.NewSingleIngress(host, "/bar", host, f.Namespace, framework.EchoService, 80, annotations)
f.EnsureIngress(ing)
f.WaitForNginxServer(host,
func(server string) bool {
return strings.Contains(server, fmt.Sprintf("server_name %s ;", host))
})
f.HTTPTestClient().
GET("/bar").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("; Secure")
})
ginkgo.It("should not set secure in cookie with provided false annotation on http", func() {
host := defaultHost
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = cookieName
annotations["nginx.ingress.kubernetes.io/session-cookie-secure"] = disableAnnotation
ing := framework.NewSingleIngress(host, "/bar", host, f.Namespace, framework.EchoService, 80, annotations)
f.EnsureIngress(ing)
f.WaitForNginxServer(host,
func(server string) bool {
return strings.Contains(server, fmt.Sprintf("server_name %s ;", host))
})
f.HTTPTestClient().
GET("/bar").
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").NotContains("; Secure")
})
ginkgo.It("should set secure in cookie with provided false annotation on https", func() {
host := defaultHost
annotations := make(map[string]string)
annotations["nginx.ingress.kubernetes.io/affinity"] = affinityAnnotation
annotations["nginx.ingress.kubernetes.io/session-cookie-name"] = cookieName
annotations["nginx.ingress.kubernetes.io/session-cookie-secure"] = disableAnnotation
f.EnsureIngress(framework.NewSingleIngressWithTLS(host, "/", host, []string{host}, f.Namespace, framework.EchoService, 80, annotations))
f.WaitForNginxServer(host,
func(server string) bool {
return strings.Contains(server, fmt.Sprintf("server_name %s ;", host)) &&
strings.Contains(server, "listen 443")
})
//nolint:gosec // Ignore the gosec error in testing
f.HTTPTestClientWithTLSConfig(&tls.Config{ServerName: host, InsecureSkipVerify: true}).
GET("/").
WithURL(f.GetURL(framework.HTTPS)).
WithHeader("Host", host).
Expect().
Status(http.StatusOK).
Header("Set-Cookie").Contains("; Secure")
})
})