Deny location mapping in case of specific errors

core/pkg/ingress/controller/annotations.go

@@ -0,0 +1,114 @@
+/*
+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 controller
+
+import (
+	"github.com/golang/glog"
+
+	"k8s.io/kubernetes/pkg/apis/extensions"
+
+	"k8s.io/ingress/core/pkg/ingress/annotations/auth"
+	"k8s.io/ingress/core/pkg/ingress/annotations/authreq"
+	"k8s.io/ingress/core/pkg/ingress/annotations/authtls"
+	"k8s.io/ingress/core/pkg/ingress/annotations/cors"
+	"k8s.io/ingress/core/pkg/ingress/annotations/healthcheck"
+	"k8s.io/ingress/core/pkg/ingress/annotations/ipwhitelist"
+	"k8s.io/ingress/core/pkg/ingress/annotations/parser"
+	"k8s.io/ingress/core/pkg/ingress/annotations/proxy"
+	"k8s.io/ingress/core/pkg/ingress/annotations/ratelimit"
+	"k8s.io/ingress/core/pkg/ingress/annotations/rewrite"
+	"k8s.io/ingress/core/pkg/ingress/annotations/secureupstream"
+	"k8s.io/ingress/core/pkg/ingress/annotations/sslpassthrough"
+	"k8s.io/ingress/core/pkg/ingress/errors"
+	"k8s.io/ingress/core/pkg/ingress/resolver"
+)
+
+type extractorConfig interface {
+	resolver.AuthCertificate
+	resolver.DefaultBackend
+	resolver.Secret
+}
+
+type annotationExtractor struct {
+	annotations map[string]parser.IngressAnnotation
+}
+
+func newAnnotationExtractor(cfg extractorConfig) annotationExtractor {
+	return annotationExtractor{
+		map[string]parser.IngressAnnotation{
+			"BasicDigestAuth": auth.NewParser(auth.AuthDirectory, cfg),
+			"ExternalAuth":    authreq.NewParser(),
+			"CertificateAuth": authtls.NewParser(cfg),
+			"EnableCORS":      cors.NewParser(),
+			"HealthCheck":     healthcheck.NewParser(cfg),
+			"Whitelist":       ipwhitelist.NewParser(cfg),
+			"Proxy":           proxy.NewParser(cfg),
+			"RateLimit":       ratelimit.NewParser(),
+			"Redirect":        rewrite.NewParser(cfg),
+			"SecureUpstream":  secureupstream.NewParser(),
+			"SSLPassthrough":  sslpassthrough.NewParser(),
+		},
+	}
+}
+
+func (e *annotationExtractor) Extract(ing *extensions.Ingress) map[string]interface{} {
+	anns := make(map[string]interface{}, 0)
+	for name, annotationParser := range e.annotations {
+		val, err := annotationParser.Parse(ing)
+		glog.V(5).Infof("annotation %v in Ingress %v/%v: %v", name, ing.GetNamespace(), ing.GetName(), val)
+		if err != nil {
+			_, de := anns["Denied"]
+			if errors.IsLocationDenied(err) && !de {
+				anns["Denied"] = err
+				glog.Errorf("error reading %v annotation in Ingress %v/%v: %v", name, ing.GetNamespace(), ing.GetName(), err)
+				continue
+			}
+			if !errors.IsMissingAnnotations(err) {
+				glog.Errorf("error reading %v annotation in Ingress %v/%v: %v", name, ing.GetNamespace(), ing.GetName(), err)
+				continue
+			}
+			glog.V(5).Infof("error reading %v annotation in Ingress %v/%v: %v", name, ing.GetNamespace(), ing.GetName(), err)
+		}
+
+		if val != nil {
+			anns[name] = val
+		}
+	}
+
+	return anns
+}
+
+const (
+	secureUpstream = "SecureUpstream"
+	healthCheck    = "HealthCheck"
+	sslPassthrough = "SSLPassthrough"
+)
+
+func (e *annotationExtractor) SecureUpstream(ing *extensions.Ingress) bool {
+	val, _ := e.annotations[secureUpstream].Parse(ing)
+	return val.(bool)
+}
+
+func (e *annotationExtractor) HealthCheck(ing *extensions.Ingress) *healthcheck.Upstream {
+	val, _ := e.annotations[healthCheck].Parse(ing)
+	return val.(*healthcheck.Upstream)
+}
+
+func (e *annotationExtractor) SSLPassthrough(ing *extensions.Ingress) bool {
+	val, _ := e.annotations[sslPassthrough].Parse(ing)
+	return val.(bool)
+}