mirror of
https://gitee.com/rainbond/Rainbond.git
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114 lines
3.8 KiB
Go
114 lines
3.8 KiB
Go
// RAINBOND, Application Management Platform
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// Copyright (C) 2014-2017 Goodrain Co., Ltd.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version. For any non-GPL usage of Rainbond,
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// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
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// must be obtained first.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package annotations
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import (
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"github.com/goodrain/rainbond/gateway/annotations/cookie"
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"github.com/goodrain/rainbond/gateway/annotations/header"
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"github.com/goodrain/rainbond/gateway/annotations/l4"
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"github.com/goodrain/rainbond/gateway/annotations/lbtype"
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"github.com/goodrain/rainbond/gateway/annotations/parser"
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"github.com/goodrain/rainbond/gateway/annotations/proxy"
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"github.com/goodrain/rainbond/gateway/annotations/resolver"
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"github.com/goodrain/rainbond/gateway/annotations/rewrite"
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"github.com/goodrain/rainbond/gateway/annotations/upstreamhashby"
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weight "github.com/goodrain/rainbond/gateway/annotations/wight"
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"github.com/goodrain/rainbond/util/ingress-nginx/ingress/errors"
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"github.com/imdario/mergo"
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"github.com/sirupsen/logrus"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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// DeniedKeyName name of the key that contains the reason to deny a location
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const DeniedKeyName = "Denied"
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// Ingress defines the valid annotations present in one NGINX Ingress rule
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type Ingress struct {
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metav1.ObjectMeta
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Header header.Config
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Cookie cookie.Config
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Weight weight.Config
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Rewrite rewrite.Config
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L4 l4.Config
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UpstreamHashBy string
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LoadBalancingType string
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Proxy proxy.Config
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}
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// Extractor defines the annotation parsers to be used in the extraction of annotations
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type Extractor struct {
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annotations map[string]parser.IngressAnnotation
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}
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// NewAnnotationExtractor creates a new annotations extractor
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func NewAnnotationExtractor(cfg resolver.Resolver) Extractor {
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return Extractor{
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map[string]parser.IngressAnnotation{
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"Header": header.NewParser(cfg),
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"Cookie": cookie.NewParser(cfg),
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"Weight": weight.NewParser(cfg),
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"Rewrite": rewrite.NewParser(cfg),
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"L4": l4.NewParser(cfg),
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"UpstreamHashBy": upstreamhashby.NewParser(cfg),
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"LoadBalancingType": lbtype.NewParser(cfg),
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"Proxy": proxy.NewParser(cfg),
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},
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}
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}
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// Extract extracts the annotations from an Ingress
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func (e Extractor) Extract(meta *metav1.ObjectMeta) *Ingress {
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data := make(map[string]interface{})
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for name, annotationParser := range e.annotations {
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val, err := annotationParser.Parse(meta)
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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 := data[DeniedKeyName]
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if !alreadyDenied {
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data[DeniedKeyName] = err
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logrus.Errorf("error reading %v annotation in Ingress %v/%v: %v", name, meta.GetNamespace(), meta.GetName(), err)
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continue
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}
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logrus.Infof("error reading %v annotation in Ingress %v/%v: %v", name, meta.GetNamespace(), meta.GetName(), err)
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}
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if val != nil {
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data[name] = val
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}
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}
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pia := &Ingress{
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ObjectMeta: *meta,
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}
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err := mergo.Map(pia, data)
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if err != nil {
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logrus.Errorf("unexpected error merging extracted annotations: %v", err)
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}
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return pia
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}
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