Add X-Forwarded-Prefix on rewrites

internal/ingress/annotations/xforwardedprefix/main.go

@@ -0,0 +1,23 @@
+package xforwardedprefix
+
+import (
+	extensions "k8s.io/api/extensions/v1beta1"
+
+	"k8s.io/ingress-nginx/internal/ingress/annotations/parser"
+	"k8s.io/ingress-nginx/internal/ingress/resolver"
+)
+
+type xforwardedprefix struct {
+	r resolver.Resolver
+}
+
+// NewParser creates a new xforwardedprefix annotation parser
+func NewParser(r resolver.Resolver) parser.IngressAnnotation {
+	return xforwardedprefix{r}
+}
+
+// Parse parses the annotations contained in the ingress rule
+// used to add an x-forwarded-prefix header to the request
+func (cbbs xforwardedprefix) Parse(ing *extensions.Ingress) (interface{}, error) {
+	return parser.GetBoolAnnotation("x-forwarded-prefix", ing)
+}