Update dependencies

pkg/ingress/annotations/secureupstream/main.go

@@ -0,0 +1,78 @@
+/*
+Copyright 2016 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 secureupstream
+
+import (
+	"fmt"
+
+	"github.com/pkg/errors"
+	extensions "k8s.io/api/extensions/v1beta1"
+
+	"k8s.io/ingress-nginx/pkg/ingress/annotations/parser"
+	"k8s.io/ingress-nginx/pkg/ingress/resolver"
+)
+
+const (
+	secureUpstream       = "ingress.kubernetes.io/secure-backends"
+	secureVerifyCASecret = "ingress.kubernetes.io/secure-verify-ca-secret"
+)
+
+// Secure describes SSL backend configuration
+type Secure struct {
+	Secure bool                 `json:"secure"`
+	CACert resolver.AuthSSLCert `json:"caCert"`
+}
+
+type su struct {
+	certResolver resolver.AuthCertificate
+}
+
+// NewParser creates a new secure upstream annotation parser
+func NewParser(resolver resolver.AuthCertificate) parser.IngressAnnotation {
+	return su{
+		certResolver: resolver,
+	}
+}
+
+// Parse parses the annotations contained in the ingress
+// rule used to indicate if the upstream servers should use SSL
+func (a su) Parse(ing *extensions.Ingress) (interface{}, error) {
+	s, _ := parser.GetBoolAnnotation(secureUpstream, ing)
+	ca, _ := parser.GetStringAnnotation(secureVerifyCASecret, ing)
+	secure := &Secure{
+		Secure: s,
+		CACert: resolver.AuthSSLCert{},
+	}
+	if !s && ca != "" {
+		return secure,
+			errors.Errorf("trying to use CA from secret %v/%v on a non secure backend", ing.Namespace, ca)
+	}
+	if ca == "" {
+		return secure, nil
+	}
+	caCert, err := a.certResolver.GetAuthCertificate(fmt.Sprintf("%v/%v", ing.Namespace, ca))
+	if err != nil {
+		return secure, errors.Wrap(err, "error obtaining certificate")
+	}
+	if caCert == nil {
+		return secure, nil
+	}
+	return &Secure{
+		Secure: s,
+		CACert: *caCert,
+	}, nil
+}