Refactor annotations
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Manuel de Brito Fontes
parent
f215828b1b
commit
fb33c58d18
33 changed files with 370 additions and 401 deletions
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/*
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Copyright 2017 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package controller
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import (
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"github.com/golang/glog"
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extensions "k8s.io/api/extensions/v1beta1"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/alias"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/auth"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/authreq"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/authtls"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/clientbodybuffersize"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/cors"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/defaultbackend"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/healthcheck"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/ipwhitelist"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/parser"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/portinredirect"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/proxy"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/ratelimit"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/redirect"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/rewrite"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/secureupstream"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/serversnippet"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/serviceupstream"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/sessionaffinity"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/snippet"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/sslpassthrough"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/upstreamhashby"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/upstreamvhost"
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"k8s.io/ingress-nginx/pkg/ingress/annotations/vtsfilterkey"
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"k8s.io/ingress-nginx/pkg/ingress/errors"
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"k8s.io/ingress-nginx/pkg/ingress/resolver"
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)
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type extractorConfig interface {
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resolver.AuthCertificate
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resolver.DefaultBackend
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resolver.Secret
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resolver.Service
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}
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type annotationExtractor struct {
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secretResolver resolver.Secret
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annotations map[string]parser.IngressAnnotation
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}
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func newAnnotationExtractor(cfg extractorConfig) annotationExtractor {
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return annotationExtractor{
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cfg,
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map[string]parser.IngressAnnotation{
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"BasicDigestAuth": auth.NewParser(auth.AuthDirectory, cfg),
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"ExternalAuth": authreq.NewParser(),
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"CertificateAuth": authtls.NewParser(cfg),
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"CorsConfig": cors.NewParser(),
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"HealthCheck": healthcheck.NewParser(cfg),
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"Whitelist": ipwhitelist.NewParser(cfg),
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"UsePortInRedirects": portinredirect.NewParser(cfg),
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"Proxy": proxy.NewParser(cfg),
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"RateLimit": ratelimit.NewParser(cfg),
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"Redirect": redirect.NewParser(),
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"Rewrite": rewrite.NewParser(cfg),
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"SecureUpstream": secureupstream.NewParser(cfg),
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"ServiceUpstream": serviceupstream.NewParser(),
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"SessionAffinity": sessionaffinity.NewParser(),
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"SSLPassthrough": sslpassthrough.NewParser(),
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"ConfigurationSnippet": snippet.NewParser(),
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"Alias": alias.NewParser(),
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"ClientBodyBufferSize": clientbodybuffersize.NewParser(),
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"DefaultBackend": defaultbackend.NewParser(cfg),
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"UpstreamHashBy": upstreamhashby.NewParser(),
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"UpstreamVhost": upstreamvhost.NewParser(),
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"VtsFilterKey": vtsfilterkey.NewParser(),
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"ServerSnippet": serversnippet.NewParser(),
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},
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}
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}
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func (e *annotationExtractor) Extract(ing *extensions.Ingress) map[string]interface{} {
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anns := make(map[string]interface{})
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for name, annotationParser := range e.annotations {
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val, err := annotationParser.Parse(ing)
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glog.V(5).Infof("annotation %v in Ingress %v/%v: %v", name, ing.GetNamespace(), ing.GetName(), val)
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if err != nil {
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if errors.IsMissingAnnotations(err) {
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continue
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}
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if !errors.IsLocationDenied(err) {
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continue
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}
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_, alreadyDenied := anns[DeniedKeyName]
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if !alreadyDenied {
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anns[DeniedKeyName] = err
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glog.Errorf("error reading %v annotation in Ingress %v/%v: %v", name, ing.GetNamespace(), ing.GetName(), err)
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continue
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}
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glog.V(5).Infof("error reading %v annotation in Ingress %v/%v: %v", name, ing.GetNamespace(), ing.GetName(), err)
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}
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if val != nil {
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anns[name] = val
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}
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}
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return anns
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}
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const (
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secureUpstream = "SecureUpstream"
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healthCheck = "HealthCheck"
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sslPassthrough = "SSLPassthrough"
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sessionAffinity = "SessionAffinity"
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serviceUpstream = "ServiceUpstream"
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serverAlias = "Alias"
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corsConfig = "CorsConfig"
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clientBodyBufferSize = "ClientBodyBufferSize"
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certificateAuth = "CertificateAuth"
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serverSnippet = "ServerSnippet"
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upstreamHashBy = "UpstreamHashBy"
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)
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func (e *annotationExtractor) ServiceUpstream(ing *extensions.Ingress) bool {
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val, _ := e.annotations[serviceUpstream].Parse(ing)
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return val.(bool)
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}
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func (e *annotationExtractor) SecureUpstream(ing *extensions.Ingress) *secureupstream.Secure {
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val, err := e.annotations[secureUpstream].Parse(ing)
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if err != nil {
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glog.Errorf("error parsing secure upstream: %v", err)
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}
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secure := val.(*secureupstream.Secure)
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return secure
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}
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func (e *annotationExtractor) HealthCheck(ing *extensions.Ingress) *healthcheck.Upstream {
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val, _ := e.annotations[healthCheck].Parse(ing)
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return val.(*healthcheck.Upstream)
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}
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func (e *annotationExtractor) SSLPassthrough(ing *extensions.Ingress) bool {
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val, _ := e.annotations[sslPassthrough].Parse(ing)
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return val.(bool)
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}
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func (e *annotationExtractor) Alias(ing *extensions.Ingress) string {
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val, _ := e.annotations[serverAlias].Parse(ing)
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return val.(string)
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}
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func (e *annotationExtractor) ClientBodyBufferSize(ing *extensions.Ingress) string {
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val, _ := e.annotations[clientBodyBufferSize].Parse(ing)
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return val.(string)
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}
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func (e *annotationExtractor) SessionAffinity(ing *extensions.Ingress) *sessionaffinity.AffinityConfig {
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val, _ := e.annotations[sessionAffinity].Parse(ing)
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return val.(*sessionaffinity.AffinityConfig)
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}
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func (e *annotationExtractor) Cors(ing *extensions.Ingress) *cors.CorsConfig {
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val, _ := e.annotations[corsConfig].Parse(ing)
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return val.(*cors.CorsConfig)
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}
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func (e *annotationExtractor) CertificateAuth(ing *extensions.Ingress) *authtls.AuthSSLConfig {
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val, err := e.annotations[certificateAuth].Parse(ing)
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if errors.IsMissingAnnotations(err) {
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return nil
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}
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if err != nil {
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glog.Errorf("error parsing certificate auth: %v", err)
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}
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secure := val.(*authtls.AuthSSLConfig)
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return secure
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}
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func (e *annotationExtractor) ServerSnippet(ing *extensions.Ingress) string {
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val, _ := e.annotations[serverSnippet].Parse(ing)
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return val.(string)
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}
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func (e *annotationExtractor) UpstreamHashBy(ing *extensions.Ingress) string {
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val, _ := e.annotations[upstreamHashBy].Parse(ing)
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return val.(string)
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}
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