fix the bug #2799, add prefix (?i) in rewrite statement.

internal/ingress/controller/template/template.go

@@ -446,14 +446,14 @@ subs_filter '%v' '$1<base href="%v://$http_host%v">' ro;
 			// special case redirect to /
 			// ie /something to /
 			return fmt.Sprintf(`
-rewrite %s(.*) /$1 break;
-rewrite %s / break;
+rewrite (?i)%s(.*) /$1 break;
+rewrite (?i)%s / break;
 %v%v %s://%s;
 %v`, path, location.Path, xForwardedPrefix, proxyPass, proto, upstreamName, abu)
 		}
 
 		return fmt.Sprintf(`
-rewrite %s(.*) %s/$1 break;
+rewrite (?i)%s(.*) %s/$1 break;
 %v%v %s://%s;
 %v`, path, location.Rewrite.Target, xForwardedPrefix, proxyPass, proto, upstreamName, abu)
 	}

internal/ingress/controller/template/template_test.go

@@ -122,7 +122,7 @@ var (
 			"/jenkins",
 			"~* /",
 			`
-rewrite /(.*) /jenkins/$1 break;
+rewrite (?i)/(.*) /jenkins/$1 break;
 proxy_pass http://upstream-name;
 `,
 			false,
@@ -136,8 +136,8 @@ proxy_pass http://upstream-name;
 			"/",
 			`~* ^/something\/?(?<baseuri>.*)`,
 			`
-rewrite /something/(.*) /$1 break;
-rewrite /something / break;
+rewrite (?i)/something/(.*) /$1 break;
+rewrite (?i)/something / break;
 proxy_pass http://upstream-name;
 `,
 			false,
@@ -151,7 +151,7 @@ proxy_pass http://upstream-name;
 			"/not-root",
 			"~* ^/end-with-slash/(?<baseuri>.*)",
 			`
-rewrite /end-with-slash/(.*) /not-root/$1 break;
+rewrite (?i)/end-with-slash/(.*) /not-root/$1 break;
 proxy_pass http://upstream-name;
 `,
 			false,
@@ -165,7 +165,7 @@ proxy_pass http://upstream-name;
 			"/not-root",
 			`~* ^/something-complex\/?(?<baseuri>.*)`,
 			`
-rewrite /something-complex/(.*) /not-root/$1 break;
+rewrite (?i)/something-complex/(.*) /not-root/$1 break;
 proxy_pass http://upstream-name;
 `,
 			false,
@@ -179,7 +179,7 @@ proxy_pass http://upstream-name;
 			"/jenkins",
 			"~* /",
 			`
-rewrite /(.*) /jenkins/$1 break;
+rewrite (?i)/(.*) /jenkins/$1 break;
 proxy_pass http://upstream-name;
 
 set_escape_uri $escaped_base_uri $baseuri;
@@ -196,8 +196,8 @@ subs_filter '(<(?:H|h)(?:E|e)(?:A|a)(?:D|d)(?:[^">]|"[^"]*")*>)' '$1<base href="
 			"/",
 			`~* ^/something\/?(?<baseuri>.*)`,
 			`
-rewrite /something/(.*) /$1 break;
-rewrite /something / break;
+rewrite (?i)/something/(.*) /$1 break;
+rewrite (?i)/something / break;
 proxy_pass http://upstream-name;
 
 set_escape_uri $escaped_base_uri $baseuri;
@@ -214,7 +214,7 @@ subs_filter '(<(?:H|h)(?:E|e)(?:A|a)(?:D|d)(?:[^">]|"[^"]*")*>)' '$1<base href="
 			"/not-root",
 			`~* ^/end-with-slash/(?<baseuri>.*)`,
 			`
-rewrite /end-with-slash/(.*) /not-root/$1 break;
+rewrite (?i)/end-with-slash/(.*) /not-root/$1 break;
 proxy_pass http://upstream-name;
 
 set_escape_uri $escaped_base_uri $baseuri;
@@ -231,7 +231,7 @@ subs_filter '(<(?:H|h)(?:E|e)(?:A|a)(?:D|d)(?:[^">]|"[^"]*")*>)' '$1<base href="
 			"/not-root",
 			`~* ^/something-complex\/?(?<baseuri>.*)`,
 			`
-rewrite /something-complex/(.*) /not-root/$1 break;
+rewrite (?i)/something-complex/(.*) /not-root/$1 break;
 proxy_pass http://upstream-name;
 
 set_escape_uri $escaped_base_uri $baseuri;
@@ -248,8 +248,8 @@ subs_filter '(<(?:H|h)(?:E|e)(?:A|a)(?:D|d)(?:[^">]|"[^"]*")*>)' '$1<base href="
 			"/",
 			`~* ^/something\/?(?<baseuri>.*)`,
 			`
-rewrite /something/(.*) /$1 break;
-rewrite /something / break;
+rewrite (?i)/something/(.*) /$1 break;
+rewrite (?i)/something / break;
 proxy_pass http://upstream-name;
 
 set_escape_uri $escaped_base_uri $baseuri;
@@ -266,7 +266,7 @@ subs_filter '(<(?:H|h)(?:E|e)(?:A|a)(?:D|d)(?:[^">]|"[^"]*")*>)' '$1<base href="
 			"/something",
 			`~* /`,
 			`
-rewrite /(.*) /something/$1 break;
+rewrite (?i)/(.*) /something/$1 break;
 proxy_pass http://sticky-upstream-name;
 `,
 			false,
@@ -280,7 +280,7 @@ proxy_pass http://sticky-upstream-name;
 			"/something",
 			`~* /`,
 			`
-rewrite /(.*) /something/$1 break;
+rewrite (?i)/(.*) /something/$1 break;
 proxy_pass http://upstream_balancer;
 `,
 			false,
@@ -294,7 +294,7 @@ proxy_pass http://upstream_balancer;
 			"/something",
 			`~* ^/there\/?(?<baseuri>.*)`,
 			`
-rewrite /there/(.*) /something/$1 break;
+rewrite (?i)/there/(.*) /something/$1 break;
 proxy_set_header X-Forwarded-Prefix "/there/";
 proxy_pass http://sticky-upstream-name;
 `,

test/e2e/annotations/affinity.go

@@ -105,7 +105,6 @@ var _ = framework.IngressNginxDescribe("Annotations - Affinity", func() {
 				Annotations: map[string]string{
 					"nginx.ingress.kubernetes.io/affinity":            "cookie",
 					"nginx.ingress.kubernetes.io/session-cookie-name": "SERVERID",
-					"nginx.ingress.kubernetes.io/rewrite-target":      "/something",
 				},
 			},
 			Spec: v1beta1.IngressSpec{
@@ -146,7 +145,7 @@ var _ = framework.IngressNginxDescribe("Annotations - Affinity", func() {
 
 		Expect(len(errs)).Should(BeNumerically("==", 0))
 		Expect(resp.StatusCode).Should(Equal(http.StatusOK))
-		Expect(body).Should(ContainSubstring(fmt.Sprintf("request_uri=http://%v:8080/something/", host)))
+		Expect(body).Should(ContainSubstring(fmt.Sprintf("request_uri=http://%v:8080/", host)))
 		Expect(resp.Header.Get("Set-Cookie")).Should(ContainSubstring("SERVERID="))
 	})
 

test/e2e/annotations/rewrite.go

@@ -0,0 +1,120 @@
+/*
+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 (
+	"fmt"
+	"net/http"
+	"strings"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+
+	"github.com/parnurzeal/gorequest"
+
+	"k8s.io/ingress-nginx/test/e2e/framework"
+)
+
+var _ = framework.IngressNginxDescribe("Annotations - Rewrite", func() {
+	f := framework.NewDefaultFramework("rewrite")
+
+	BeforeEach(func() {
+		err := f.NewEchoDeploymentWithReplicas(1)
+		Expect(err).NotTo(HaveOccurred())
+	})
+
+	AfterEach(func() {
+	})
+
+	It("should rewrite request URL", func() {
+		By("setting rewrite-target annotation")
+
+		host := "rewrite.foo.com"
+		annotations := map[string]string{"nginx.ingress.kubernetes.io/rewrite-target": "/"}
+		expectBodyRequestURI := fmt.Sprintf("request_uri=http://%v:8080/", host)
+
+		ing := framework.NewSingleIngress(host, "/something", host, f.IngressController.Namespace, "http-svc", 80, &annotations)
+		_, err := f.EnsureIngress(ing)
+
+		Expect(err).NotTo(HaveOccurred())
+		Expect(ing).NotTo(BeNil())
+
+		err = f.WaitForNginxServer(host,
+			func(server string) bool {
+				return strings.Contains(server, "rewrite (?i)/something/(.*) /$1 break;") &&
+					strings.Contains(server, "rewrite (?i)/something / break;")
+			})
+		Expect(err).NotTo(HaveOccurred())
+
+		By("sending request to Ingress rule path (lowercase)")
+
+		resp, body, errs := gorequest.New().
+			Get(f.IngressController.HTTPURL+"/something").
+			Set("Host", host).
+			End()
+
+		Expect(len(errs)).Should(Equal(0))
+		Expect(resp.StatusCode).Should(Equal(http.StatusOK))
+		Expect(body).Should(ContainSubstring(expectBodyRequestURI))
+
+		By("sending request to Ingress rule path (mixed case)")
+
+		resp, body, errs = gorequest.New().
+			Get(f.IngressController.HTTPURL+"/SomeThing").
+			Set("Host", host).
+			End()
+
+		Expect(len(errs)).Should(Equal(0))
+		Expect(resp.StatusCode).Should(Equal(http.StatusOK))
+		Expect(body).Should(ContainSubstring(expectBodyRequestURI))
+	})
+
+	It("should write rewrite logs", func() {
+		By("setting enable-rewrite-log annotation")
+
+		host := "rewrite.bar.com"
+		annotations := map[string]string{
+			"nginx.ingress.kubernetes.io/rewrite-target":     "/",
+			"nginx.ingress.kubernetes.io/enable-rewrite-log": "true",
+		}
+
+		ing := framework.NewSingleIngress(host, "/something", host, f.IngressController.Namespace, "http-svc", 80, &annotations)
+		_, err := f.EnsureIngress(ing)
+
+		Expect(err).NotTo(HaveOccurred())
+		Expect(ing).NotTo(BeNil())
+
+		err = f.WaitForNginxServer(host,
+			func(server string) bool {
+				return strings.Contains(server, "rewrite_log on;")
+			})
+		Expect(err).NotTo(HaveOccurred())
+
+		resp, _, errs := gorequest.New().
+			Get(f.IngressController.HTTPURL+"/something").
+			Set("Host", host).
+			End()
+
+		Expect(len(errs)).Should(Equal(0))
+		Expect(resp.StatusCode).Should(Equal(http.StatusOK))
+
+		logs, err := f.NginxLogs()
+		Expect(err).ToNot(HaveOccurred())
+		Expect(logs).To(ContainSubstring(`"(?i)/something" matches "/something", client:`))
+		Expect(logs).To(ContainSubstring(`rewritten data: "/", args: "",`))
+	})
+})