mirror of
https://github.com/alibaba/higress.git
synced 2026-03-01 23:20:52 +08:00
119 lines
3.2 KiB
Go
119 lines
3.2 KiB
Go
// Copyright (c) 2023 Alibaba Group Holding Ltd.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package annotations
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import (
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"github.com/alibaba/higress/pkg/ingress/kube/util"
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. "github.com/alibaba/higress/pkg/ingress/log"
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wrappers "google.golang.org/protobuf/types/known/wrapperspb"
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networking "istio.io/api/networking/v1alpha3"
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)
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const (
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mirrorTargetService = "mirror-target-service"
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mirrorPercentage = "mirror-percentage"
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)
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var (
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_ Parser = &mirror{}
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_ RouteHandler = &mirror{}
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)
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type MirrorConfig struct {
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util.ServiceInfo
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Percentage *wrappers.DoubleValue
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}
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type mirror struct{}
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func (m mirror) Parse(annotations Annotations, config *Ingress, globalContext *GlobalContext) error {
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if !needMirror(annotations) {
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return nil
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}
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target, err := annotations.ParseStringASAP(mirrorTargetService)
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if err != nil {
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IngressLog.Errorf("Get mirror target service fail, err: %v", err)
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return nil
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}
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serviceInfo, err := util.ParseServiceInfo(target, config.Namespace)
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if err != nil {
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IngressLog.Errorf("Get mirror target service fail, err: %v", err)
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return nil
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}
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serviceLister, exist := globalContext.ClusterServiceList[config.ClusterId]
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if !exist {
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IngressLog.Errorf("service lister of cluster %s doesn't exist", config.ClusterId)
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return nil
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}
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service, err := serviceLister.Services(serviceInfo.Namespace).Get(serviceInfo.Name)
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if err != nil {
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IngressLog.Errorf("Mirror service %s/%s within ingress %s/%s is not found, with err: %v",
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serviceInfo.Namespace, serviceInfo.Name, config.Namespace, config.Name, err)
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return nil
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}
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if service == nil {
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IngressLog.Errorf("service %s/%s within ingress %s/%s is empty value",
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serviceInfo.Namespace, serviceInfo.Name, config.Namespace, config.Name)
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return nil
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}
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if serviceInfo.Port == 0 {
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// Use the first port
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serviceInfo.Port = uint32(service.Spec.Ports[0].Port)
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}
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var percentage *wrappers.DoubleValue
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if value, err := annotations.ParseIntASAP(mirrorPercentage); err == nil {
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if value < 100 {
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percentage = &wrappers.DoubleValue{
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Value: float64(value),
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}
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}
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}
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config.Mirror = &MirrorConfig{
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ServiceInfo: serviceInfo,
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Percentage: percentage,
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}
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return nil
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}
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func (m mirror) ApplyRoute(route *networking.HTTPRoute, config *Ingress) {
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if config.Mirror == nil {
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return
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}
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route.Mirror = &networking.Destination{
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Host: util.CreateServiceFQDN(config.Mirror.Namespace, config.Mirror.Name),
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Port: &networking.PortSelector{
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Number: config.Mirror.Port,
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},
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}
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if config.Mirror.Percentage != nil {
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route.MirrorPercentage = &networking.Percent{
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Value: config.Mirror.Percentage.GetValue(),
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}
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}
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}
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func needMirror(annotations Annotations) bool {
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return annotations.HasASAP(mirrorTargetService)
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}
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