feat: add support for http-to-https redirect annotation (#484)

diff --git a/docs/en/latest/concepts/annotations.md b/docs/en/latest/concepts/annotations.md
index 9b8094c..73855be 100644
--- a/docs/en/latest/concepts/annotations.md
+++ b/docs/en/latest/concepts/annotations.md
@@ -96,4 +96,38 @@
               number: 80
 ```
 
-With this Ingress, any requests with `/app` prefix will be forwarded to backend without the `/app/` part, e.g. request `/app/ip` will be forwarded to `/ip`.  
+With this Ingress, any requests with `/app` prefix will be forwarded to backend without the `/app/` part, e.g. request `/app/ip` will be forwarded to `/ip`.
+
+Redirect
+---------
+
+You can use the following annotations to control the redirect behavior.
+
+* `k8s.apisix.apache.org/http-to-https`
+
+If this annotation set to `true` and the request is HTTP, it will be automatically redirected to HTTPS with 301 response code,
+and the URI will keep the same as client request.
+
+For example, the following Ingress, if we set `k8s.apisix.apache.org/http-to-https: "true"`. The client will get a response with 301 status code, and the response header `Location`  will be `https://httpbin.org/sample`.
+
+```yaml
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  annotations:
+    kubernetes.io/ingress.class: apisix
+    k8s.apisix.apache.org/http-to-https: "true"
+  name: ingress-v1
+spec:
+  rules:
+  - host: httpbin.org
+    http:
+      paths:
+      - path: /sample
+        pathType: Exact
+        backend:
+          service:
+            name: httpbin
+            port:
+              number: 80
+```
diff --git a/pkg/kube/translation/annotations.go b/pkg/kube/translation/annotations.go
index 23ff8cb..4c7f415 100644
--- a/pkg/kube/translation/annotations.go
+++ b/pkg/kube/translation/annotations.go
@@ -27,6 +27,7 @@
 		annotations.NewCorsHandler(),
 		annotations.NewIPRestrictionHandler(),
 		annotations.NewRewriteHandler(),
+		annotations.NewRedirectHandler(),
 	}
 )
 
diff --git a/pkg/kube/translation/annotations/redirect.go b/pkg/kube/translation/annotations/redirect.go
new file mode 100644
index 0000000..c836eab
--- /dev/null
+++ b/pkg/kube/translation/annotations/redirect.go
@@ -0,0 +1,41 @@
+// Licensed to the Apache Software Foundation (ASF) under one or more
+// contributor license agreements.  See the NOTICE file distributed with
+// this work for additional information regarding copyright ownership.
+// The ASF licenses this file to You 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 (
+	apisixv1 "github.com/apache/apisix-ingress-controller/pkg/types/apisix/v1"
+)
+
+const (
+	_httpToHttps = "k8s.apisix.apache.org/http-to-https"
+)
+
+type redirect struct{}
+
+// NewRedirectHandler creates a handler to convert
+// annotations about redirect control to APISIX redirect plugin.
+func NewRedirectHandler() Handler {
+	return &redirect{}
+}
+
+func (r *redirect) PluginName() string {
+	return "redirect"
+}
+
+func (r *redirect) Handle(e Extractor) (interface{}, error) {
+	var plugin apisixv1.RedirectConfig
+	plugin.HttpToHttps = e.GetBoolAnnotation(_httpToHttps)
+	return &plugin, nil
+}
diff --git a/pkg/types/apisix/v1/plugin_types.go b/pkg/types/apisix/v1/plugin_types.go
index a11c820..a9f505f 100644
--- a/pkg/types/apisix/v1/plugin_types.go
+++ b/pkg/types/apisix/v1/plugin_types.go
@@ -55,3 +55,9 @@
 	RewriteTarget      string   `json:"uri,omitempty"`
 	RewriteTargetRegex []string `json:"regex_uri,omitempty"`
 }
+
+// RedirectConfig is the rule config for redirect plugin.
+// +k8s:deepcopy-gen=true
+type RedirectConfig struct {
+	HttpToHttps bool `json:"http_to_https,omitempty"`
+}
diff --git a/pkg/types/apisix/v1/zz_generated.deepcopy.go b/pkg/types/apisix/v1/zz_generated.deepcopy.go
index 9be82bd..b75a91d 100644
--- a/pkg/types/apisix/v1/zz_generated.deepcopy.go
+++ b/pkg/types/apisix/v1/zz_generated.deepcopy.go
@@ -126,6 +126,22 @@
 }
 
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *RedirectConfig) DeepCopyInto(out *RedirectConfig) {
+	*out = *in
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new RedirectConfig.
+func (in *RedirectConfig) DeepCopy() *RedirectConfig {
+	if in == nil {
+		return nil
+	}
+	out := new(RedirectConfig)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *RewriteConfig) DeepCopyInto(out *RewriteConfig) {
 	*out = *in
 	if in.RewriteTargetRegex != nil {
diff --git a/test/e2e/annotations/redirect.go b/test/e2e/annotations/redirect.go
new file mode 100644
index 0000000..0dd4100
--- /dev/null
+++ b/test/e2e/annotations/redirect.go
@@ -0,0 +1,122 @@
+// Licensed to the Apache Software Foundation (ASF) under one or more
+// contributor license agreements.  See the NOTICE file distributed with
+// this work for additional information regarding copyright ownership.
+// The ASF licenses this file to You 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"
+	"time"
+
+	"github.com/onsi/ginkgo"
+	"github.com/stretchr/testify/assert"
+
+	"github.com/apache/apisix-ingress-controller/test/e2e/scaffold"
+)
+
+var _ = ginkgo.Describe("redirect annotations", func() {
+	s := scaffold.NewDefaultScaffold()
+
+	ginkgo.It("redirect http-to-https in ingress networking/v1", func() {
+		backendSvc, backendPort := s.DefaultHTTPBackend()
+		ing := fmt.Sprintf(`
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  annotations:
+    kubernetes.io/ingress.class: apisix
+    k8s.apisix.apache.org/http-to-https: "true"
+  name: ingress-v1
+spec:
+  rules:
+  - host: httpbin.org
+    http:
+      paths:
+      - path: /sample
+        pathType: Exact
+        backend:
+          service:
+            name: %s
+            port:
+              number: %d
+`, backendSvc, backendPort[0])
+		err := s.CreateResourceFromString(ing)
+		assert.Nil(ginkgo.GinkgoT(), err, "creating ingress")
+		time.Sleep(5 * time.Second)
+
+		resp := s.NewAPISIXClient().GET("/sample").WithHeader("Host", "httpbin.org").Expect()
+		resp.Status(http.StatusMovedPermanently)
+		resp.Header("Location").Equal("https://httpbin.org/sample")
+	})
+
+	ginkgo.It("redirect http-to-https in ingress networking/v1beta1", func() {
+		backendSvc, backendPort := s.DefaultHTTPBackend()
+		ing := fmt.Sprintf(`
+apiVersion: networking.k8s.io/v1beta1
+kind: Ingress
+metadata:
+  annotations:
+    kubernetes.io/ingress.class: apisix
+    k8s.apisix.apache.org/http-to-https: "true"
+  name: ingress-v1beta1
+spec:
+  rules:
+  - host: httpbin.org
+    http:
+      paths:
+      - path: /sample
+        pathType: Exact
+        backend:
+          serviceName: %s
+          servicePort: %d
+`, backendSvc, backendPort[0])
+		err := s.CreateResourceFromString(ing)
+		assert.Nil(ginkgo.GinkgoT(), err, "creating ingress")
+		time.Sleep(5 * time.Second)
+
+		resp := s.NewAPISIXClient().GET("/sample").WithHeader("Host", "httpbin.org").Expect()
+		resp.Status(http.StatusMovedPermanently)
+		resp.Header("Location").Equal("https://httpbin.org/sample")
+	})
+
+	ginkgo.It("redirect http-to-https in ingress extensions/v1beta1", func() {
+		backendSvc, backendPort := s.DefaultHTTPBackend()
+		ing := fmt.Sprintf(`
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  annotations:
+    kubernetes.io/ingress.class: apisix
+    k8s.apisix.apache.org/http-to-https: "true"
+  name: ingress-extensions-v1beta1
+spec:
+  rules:
+  - host: httpbin.org
+    http:
+      paths:
+      - path: /sample
+        pathType: Exact
+        backend:
+          serviceName: %s
+          servicePort: %d
+`, backendSvc, backendPort[0])
+		err := s.CreateResourceFromString(ing)
+		assert.Nil(ginkgo.GinkgoT(), err, "creating ingress")
+		time.Sleep(5 * time.Second)
+
+		resp := s.NewAPISIXClient().GET("/sample").WithHeader("Host", "httpbin.org").Expect()
+		resp.Status(http.StatusMovedPermanently)
+		resp.Header("Location").Equal("https://httpbin.org/sample")
+	})
+})
diff --git a/test/e2e/go.sum b/test/e2e/go.sum
index 32c62ff..a5021c6 100644
--- a/test/e2e/go.sum
+++ b/test/e2e/go.sum
@@ -125,6 +125,7 @@
 github.com/cpuguy83/go-md2man/v2 v2.0.0 h1:EoUDS0afbrsXAZ9YQ9jdu/mZ2sXgT1/2yyNng4PGlyM=
 github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
 github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v0.0.0-20151105211317-5215b55f46b2/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -188,6 +189,8 @@
 github.com/go-logr/logr v0.1.0/go.mod h1:ixOQHD9gLJUVQQ2ZOR7zLEifBX6tGkNJF4QyIY7sIas=
 github.com/go-logr/logr v0.2.0 h1:QvGt2nLcHH0WK9orKa+ppBPAxREcH364nPUedEpK0TY=
 github.com/go-logr/logr v0.2.0/go.mod h1:z6/tIYblkpsD+a4lm/fGIIU9mZ+XfAiaFtq7xTgseGU=
+github.com/go-logr/logr v0.4.0 h1:K7/B1jt6fIBQVd4Owv2MqGQClcgf0R266+7C/QjRcLc=
+github.com/go-logr/logr v0.4.0/go.mod h1:z6/tIYblkpsD+a4lm/fGIIU9mZ+XfAiaFtq7xTgseGU=
 github.com/go-openapi/jsonpointer v0.0.0-20160704185906-46af16f9f7b1/go.mod h1:+35s3my2LFTysnkMfxsJBAMHj/DoqoB9knIWoYG/Vk0=
 github.com/go-openapi/jsonpointer v0.19.2/go.mod h1:3akKfEdA7DF1sugOqz1dVQHBcuDBPKZGEoHC/NkiQRg=
 github.com/go-openapi/jsonpointer v0.19.3/go.mod h1:Pl9vOtqEWErmShwVjC8pYs9cog34VGT37dQOVbmoatg=
@@ -196,6 +199,7 @@
 github.com/go-openapi/jsonreference v0.19.3/go.mod h1:rjx6GuL8TTa9VaixXglHmQmIL98+wF9xc8zWvFonSJ8=
 github.com/go-openapi/spec v0.0.0-20160808142527-6aced65f8501/go.mod h1:J8+jY1nAiCcj+friV/PDoE1/3eeccG9LYBs0tYvLOWc=
 github.com/go-openapi/spec v0.19.3/go.mod h1:FpwSN1ksY1eteniUU7X0N/BgJ7a4WvBFVA8Lj9mJglo=
+github.com/go-openapi/spec v0.19.5/go.mod h1:Hm2Jr4jv8G1ciIAo+frC/Ft+rR2kQDh8JHKHb3gWUSk=
 github.com/go-openapi/swag v0.0.0-20160704191624-1d0bd113de87/go.mod h1:DXUve3Dpr1UfpPtxFw+EFuQ41HhCWZfha5jSVRG7C7I=
 github.com/go-openapi/swag v0.19.2/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
 github.com/go-openapi/swag v0.19.5/go.mod h1:POnQmlKehdgb5mhVOsnJFsivZCEZ/vjK9gh66Z9tfKk=
@@ -212,6 +216,8 @@
 github.com/gogo/protobuf v1.2.2-0.20190723190241-65acae22fc9d/go.mod h1:SlYgWuQ5SjCEi6WLHjHCa1yvBfUnHcTbrrZtXPKa29o=
 github.com/gogo/protobuf v1.3.1 h1:DqDEcV5aeaTmdFBePNpYsp3FlcVH/2ISVVM9Qf8PSls=
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+github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
+github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
 github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
 github.com/golang/groupcache v0.0.0-20160516000752-02826c3e7903/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
@@ -351,6 +357,7 @@
 github.com/k0kubun/colorstring v0.0.0-20150214042306-9440f1994b88/go.mod h1:3w7q1U84EfirKl04SVQ/s7nPm1ZPhiXd34z40TNz36k=
 github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvWXihfKN4Q=
 github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
+github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
 github.com/klauspost/compress v1.8.2 h1:Bx0qjetmNjdFXASH02NSAREKpiaDwkO1DRZ3dV2KCcs=
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@@ -366,6 +373,7 @@
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+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/kylelemons/godebug v0.0.0-20170820004349-d65d576e9348/go.mod h1:B69LEHPfb2qLo0BaaOLcbitczOKLWTsrBG9LczfCD4k=
 github.com/leodido/go-urn v1.2.0/go.mod h1:+8+nEpDfqqsY+g338gtMEUOtuK+4dEMhiQEgxpxOKII=
 github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
@@ -414,6 +422,7 @@
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/mxk/go-flowrate v0.0.0-20140419014527-cca7078d478f/go.mod h1:ZdcZmHo+o7JKHSa8/e818NopupXU1YMK5fe1lsApnBw=
+github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
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@@ -553,6 +562,7 @@
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+github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/zclconf/go-cty v1.2.0/go.mod h1:hOPWgoHbaTUnI5k4D2ld+GRpFJSCe6bCM7m1q/N4PQ8=
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 go.etcd.io/bbolt v1.3.3/go.mod h1:IbVyRI1SCnLcuJnV2u8VeU0CEYM7e686BmAb1XKL+uU=
@@ -622,6 +632,7 @@
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0 h1:RM4zey1++hCTbCVQfnWeKs9/IEsaBLA8vTkd0WVtmH4=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.3.1-0.20200828183125-ce943fd02449/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20170114055629-f2499483f923/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180811021610-c39426892332/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -655,9 +666,12 @@
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 golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
 golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
+golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20201110031124-69a78807bb2b/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
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 golang.org/x/net v0.0.0-20201224014010-6772e930b67b/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
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@@ -670,6 +684,7 @@
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@@ -719,6 +734,9 @@
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@@ -778,8 +796,12 @@
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@@ -849,6 +871,7 @@
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@@ -870,6 +893,8 @@
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@@ -895,11 +920,13 @@
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@@ -908,9 +935,12 @@
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@@ -932,6 +962,8 @@
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