77 lines
2.7 KiB
Go
77 lines
2.7 KiB
Go
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/*
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Copyright 2023 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 disableproxyintercepterrors
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import (
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networking "k8s.io/api/networking/v1"
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"k8s.io/ingress-nginx/internal/ingress/annotations/parser"
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"k8s.io/ingress-nginx/internal/ingress/errors"
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"k8s.io/ingress-nginx/internal/ingress/resolver"
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)
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const (
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disableProxyInterceptErrorsAnnotation = "disable-proxy-intercept-errors"
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)
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var disableProxyInterceptErrorsAnnotations = parser.Annotation{
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Group: "backend",
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Annotations: parser.AnnotationFields{
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disableProxyInterceptErrorsAnnotation: {
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Validator: parser.ValidateBool,
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Scope: parser.AnnotationScopeLocation,
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Risk: parser.AnnotationRiskLow,
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Documentation: `This annotation allows to disable NGINX proxy-intercept-errors when custom-http-errors are set.
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If a default backend annotation is specified on the ingress, the errors will be routed to that annotation's default backend service (instead of the global default backend).
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Different ingresses can specify different sets of errors codes and there are UseCases where NGINX shall not intercept all errors returned from upstream.`,
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},
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},
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}
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type disableProxyInterceptErrors struct {
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r resolver.Resolver
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annotationConfig parser.Annotation
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}
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func (pie disableProxyInterceptErrors) GetDocumentation() parser.AnnotationFields {
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return pie.annotationConfig.Annotations
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}
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func (pie disableProxyInterceptErrors) Validate(anns map[string]string) error {
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maxrisk := parser.StringRiskToRisk(pie.r.GetSecurityConfiguration().AnnotationsRiskLevel)
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return parser.CheckAnnotationRisk(anns, maxrisk, disableProxyInterceptErrorsAnnotations.Annotations)
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}
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// NewParser creates a new disableProxyInterceptErrors annotation parser
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func NewParser(r resolver.Resolver) parser.IngressAnnotation {
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return disableProxyInterceptErrors{
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r: r,
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annotationConfig: disableProxyInterceptErrorsAnnotations,
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}
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}
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func (pie disableProxyInterceptErrors) Parse(ing *networking.Ingress) (interface{}, error) {
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val, err := parser.GetBoolAnnotation(disableProxyInterceptErrorsAnnotation, ing, pie.annotationConfig.Annotations)
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// A missing annotation is not a problem, just use the default
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if err == errors.ErrMissingAnnotations {
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return false, nil // default is false
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}
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return val, nil
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}
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