Add support for specify proxy cookie path/domain

controllers/nginx/configuration.md

@@ -259,6 +259,12 @@ http://nginx.org/en/docs/http/ngx_http_core_module.html#keepalive_timeout
 **proxy-connect-timeout:** Sets the timeout for [establishing a connection with a proxied server](http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_connect_timeout). It should be noted that this timeout cannot usually exceed 75 seconds.
 
 
+**proxy-cookie-domain:** Sets a text that [should be changed in the domain attribute](http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_cookie_domain) of the “Set-Cookie” header fields of a proxied server response.
+
+
+**proxy-cookie-path:** Sets a text that [should be changed in the path attribute](http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_cookie_path) of the “Set-Cookie” header fields of a proxied server response.
+
+
 **proxy-read-timeout:** Sets the timeout in seconds for [reading a response from the proxied server](http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_read_timeout). The timeout is set only between two successive read operations, not for the transmission of the whole response.
 
 
@@ -376,7 +382,11 @@ The following table shows the options, the default value and a description.
 |keep-alive|"75"|
 |map-hash-bucket-size|"64"|
 |max-worker-connections|"16384"|
+|proxy-body-size|same as body-size|
+|proxy-buffer-size|"4k"|
 |proxy-connect-timeout|"5"|
+|proxy-cookie-domain|"off"|
+|proxy-cookie-path|"off"|
 |proxy-read-timeout|"60"|
 |proxy-real-ip-cidr|0.0.0.0/0|
 |proxy-send-timeout|"60"|

controllers/nginx/pkg/config/config.go

@@ -274,6 +274,8 @@ func NewDefault() Configuration {
 			ProxyReadTimeout:     60,
 			ProxySendTimeout:     60,
 			ProxyBufferSize:      "4k",
+			ProxyCookieDomain:    "off",
+			ProxyCookiePath:      "off",
 			SSLRedirect:          true,
 			CustomHTTPErrors:     []int{},
 			WhitelistSourceRange: []string{},

controllers/nginx/rootfs/etc/nginx/template/nginx.tmpl

@@ -326,6 +326,9 @@ http {
 
             proxy_http_version                      1.1;
 
+            proxy_cookie_domain                     {{ $location.Proxy.CookiePath }};
+            proxy_cookie_path                       {{ $location.Proxy.CookieDomain }};
+
             {{/* rewrite only works if the content is not compressed */}}
             {{ if $location.Redirect.AddBaseURL }}
             proxy_set_header                        Accept-Encoding     "";

core/pkg/ingress/annotations/proxy/main.go

@@ -24,11 +24,13 @@ import (
 )
 
 const (
-	bodySize   = "ingress.kubernetes.io/proxy-body-size"
-	connect    = "ingress.kubernetes.io/proxy-connect-timeout"
-	send       = "ingress.kubernetes.io/proxy-send-timeout"
-	read       = "ingress.kubernetes.io/proxy-read-timeout"
-	bufferSize = "ingress.kubernetes.io/proxy-buffer-size"
+	bodySize     = "ingress.kubernetes.io/proxy-body-size"
+	connect      = "ingress.kubernetes.io/proxy-connect-timeout"
+	send         = "ingress.kubernetes.io/proxy-send-timeout"
+	read         = "ingress.kubernetes.io/proxy-read-timeout"
+	bufferSize   = "ingress.kubernetes.io/proxy-buffer-size"
+	cookiePath   = "ingress.kubernetes.io/proxy-cookie-path"
+	cookieDomain = "ingress.kubernetes.io/proxy-cookie-domain"
 )
 
 // Configuration returns the proxy timeout to use in the upstream server/s
@@ -38,6 +40,8 @@ type Configuration struct {
 	SendTimeout    int    `json:"sendTimeout"`
 	ReadTimeout    int    `json:"readTimeout"`
 	BufferSize     string `json:"bufferSize"`
+	CookieDomain   string `json:"proxyCookieDomain"`
+	CookiePath     string `json:"proxyCookiePath"`
 }
 
 type proxy struct {
@@ -73,10 +77,21 @@ func (a proxy) Parse(ing *extensions.Ingress) (interface{}, error) {
 		bufs = defBackend.ProxyBufferSize
 	}
 
+	cp, err := parser.GetStringAnnotation(cookiePath, ing)
+	if err != nil || cp == "" {
+		cp = defBackend.ProxyCookiePath
+	}
+
+	cd, err := parser.GetStringAnnotation(cookieDomain, ing)
+	if err != nil || cp == "" {
+		cp = defBackend.ProxyCookieDomain
+	}
+
 	bs, err := parser.GetStringAnnotation(bodySize, ing)
 	if err != nil || bs == "" {
 		bs = defBackend.ProxyBodySize
 	}
 
-	return &Configuration{bs, ct, st, rt, bufs}, nil
+	return &Configuration{bs, ct, st, rt, bufs,
+		cd, cp}, nil
 }

core/pkg/ingress/defaults/main.go

@@ -37,6 +37,16 @@ type Backend struct {
 	// http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_buffer_size)
 	ProxyBufferSize string `json:"proxy-buffer-size"`
 
+	// Sets a text that should be changed in the path attribute of the “Set-Cookie” header fields of
+	// a proxied server response.
+	// http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_cookie_path
+	ProxyCookiePath string `json:"proxy-cookie-path"`
+
+	// Sets a text that should be changed in the domain attribute of the “Set-Cookie” header fields
+	// of a proxied server response.
+	// http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_cookie_domain
+	ProxyCookieDomain string `json:"proxy-cookie-domain"`
+
 	// Name server/s used to resolve names of upstream servers into IP addresses.
 	// The file /etc/resolv.conf is used as DNS resolution configuration.
 	Resolver []net.IP