/
rule.go
232 lines (198 loc) · 6.63 KB
/
rule.go
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package applier
import (
"context"
"fmt"
"sync"
"k8s.io/cloud-provider-alibaba-cloud/pkg/util"
prvd "k8s.io/cloud-provider-alibaba-cloud/pkg/provider"
albsdk "github.com/aliyun/alibaba-cloud-sdk-go/services/alb"
"github.com/go-logr/logr"
"k8s.io/apimachinery/pkg/util/sets"
albmodel "k8s.io/cloud-provider-alibaba-cloud/pkg/model/alb"
"k8s.io/cloud-provider-alibaba-cloud/pkg/model/alb/core"
)
func NewListenerRuleApplier(albProvider prvd.Provider, stack core.Manager, logger logr.Logger) *listenerRuleApplier {
return &listenerRuleApplier{
stack: stack,
albProvider: albProvider,
logger: logger,
}
}
type listenerRuleApplier struct {
albProvider prvd.Provider
stack core.Manager
logger logr.Logger
}
func (s *listenerRuleApplier) Apply(ctx context.Context) error {
var resLRs []*albmodel.ListenerRule
_ = s.stack.ListResources(&resLRs)
resLRsByLsID, err := mapResListenerRuleByListenerID(ctx, resLRs)
if err != nil {
return err
}
var resLSs []*albmodel.Listener
_ = s.stack.ListResources(&resLSs)
resLSsByLsID, err := mapResListenerByListenerID(ctx, resLSs)
if err != nil {
return err
}
var (
errApply error
wgApply sync.WaitGroup
chApply = make(chan struct{}, util.ListenerConcurrentNum)
)
for lsID := range resLSsByLsID {
chApply <- struct{}{}
wgApply.Add(1)
go func(listenerID string) {
util.RandomSleepFunc(util.ConcurrentMaxSleepMillisecondTime)
defer func() {
wgApply.Done()
<-chApply
}()
rules := resLRsByLsID[listenerID]
if errOnce := s.applyListenerRulesOnListenerBatch(ctx, listenerID, rules); errApply == nil && errOnce != nil {
s.logger.Error(errOnce, "apply listener rules failed", "listener", listenerID)
errApply = errOnce
return
}
}(lsID)
}
wgApply.Wait()
if errApply != nil {
return errApply
}
return nil
}
func (s *listenerRuleApplier) PostApply(ctx context.Context) error {
return nil
}
func (s *listenerRuleApplier) applyListenerRulesOnListenerBatch(ctx context.Context, lsID string, resLRs []*albmodel.ListenerRule) error {
if len(lsID) == 0 {
return fmt.Errorf("empty listener id when apply rules error")
}
traceID := ctx.Value(util.TraceID)
sdkLRs, err := s.findSDKListenersRulesOnLS(ctx, lsID)
if err != nil {
return err
}
matchedResAndSDKLRs, unmatchedResLRs, unmatchedSDKLRs := matchResAndSDKListenerRules(resLRs, sdkLRs)
if len(matchedResAndSDKLRs) != 0 {
s.logger.V(util.SynLogLevel).Info("apply rules batch",
"matchedResAndSDKLRs", matchedResAndSDKLRs,
"traceID", traceID)
}
if len(unmatchedResLRs) != 0 {
s.logger.V(util.SynLogLevel).Info("apply rules batch",
"unmatchedResLRs", unmatchedResLRs,
"traceID", traceID)
}
if len(unmatchedSDKLRs) != 0 {
s.logger.V(util.SynLogLevel).Info("apply rules batch",
"unmatchedSDKLBs", unmatchedSDKLRs,
"traceID", traceID)
}
unmatchedSDKLRIDs := make([]string, 0)
for _, sdkLR := range unmatchedSDKLRs {
unmatchedSDKLRIDs = append(unmatchedSDKLRIDs, sdkLR.RuleId)
}
if err := s.albProvider.DeleteALBListenerRules(ctx, unmatchedSDKLRIDs); err != nil {
return err
}
lrStatus, err := s.albProvider.CreateALBListenerRules(ctx, unmatchedResLRs)
if err != nil {
return err
}
for _, resLR := range unmatchedResLRs {
status, ok := lrStatus[resLR.Spec.Priority]
if !ok {
return fmt.Errorf("failed create rule with priority: %d", resLR.Spec.Priority)
}
resLR.SetStatus(status)
}
resAndSDKListenerRulePairs := make([]albmodel.ResAndSDKListenerRulePair, 0)
for _, matchedResAndSDKLR := range matchedResAndSDKLRs {
resAndSDKListenerRulePairs = append(resAndSDKListenerRulePairs, albmodel.ResAndSDKListenerRulePair{
ResLR: matchedResAndSDKLR.ResLR,
SdkLR: matchedResAndSDKLR.SdkLR,
})
}
err = s.albProvider.UpdateALBListenerRules(ctx, resAndSDKListenerRulePairs)
if err != nil {
return err
}
for _, matchedResAndSDKLR := range matchedResAndSDKLRs {
matchedResAndSDKLR.ResLR.SetStatus(albmodel.ListenerRuleStatus{
RuleID: matchedResAndSDKLR.SdkLR.RuleId,
})
}
return nil
}
func (s *listenerRuleApplier) findSDKListenersRulesOnLS(ctx context.Context, lsID string) ([]albsdk.Rule, error) {
rules, err := s.albProvider.ListALBListenerRules(ctx, lsID)
if err != nil {
return nil, err
}
return rules, nil
}
func matchResAndSDKListenerRules(resLRs []*albmodel.ListenerRule, sdkLRs []albsdk.Rule) ([]albmodel.ResAndSDKListenerRulePair, []*albmodel.ListenerRule, []albsdk.Rule) {
var matchedResAndSDKLRs []albmodel.ResAndSDKListenerRulePair
var unmatchedResLRs []*albmodel.ListenerRule
var unmatchedSDKLRs []albsdk.Rule
resLRByPriority := mapResListenerRuleByPriority(resLRs)
sdkLRByPriority := mapSDKListenerRuleByPriority(sdkLRs)
resLRPriorities := sets.Int64KeySet(resLRByPriority)
sdkLRPriorities := sets.Int64KeySet(sdkLRByPriority)
for _, priority := range resLRPriorities.Intersection(sdkLRPriorities).List() {
resLR := resLRByPriority[priority]
sdkLR := sdkLRByPriority[priority]
matchedResAndSDKLRs = append(matchedResAndSDKLRs, albmodel.ResAndSDKListenerRulePair{
ResLR: resLR,
SdkLR: &sdkLR,
})
}
for _, priority := range resLRPriorities.Difference(sdkLRPriorities).List() {
unmatchedResLRs = append(unmatchedResLRs, resLRByPriority[priority])
}
for _, priority := range sdkLRPriorities.Difference(resLRPriorities).List() {
unmatchedSDKLRs = append(unmatchedSDKLRs, sdkLRByPriority[priority])
}
return matchedResAndSDKLRs, unmatchedResLRs, unmatchedSDKLRs
}
func mapResListenerRuleByPriority(resLRs []*albmodel.ListenerRule) map[int64]*albmodel.ListenerRule {
resLRByPriority := make(map[int64]*albmodel.ListenerRule)
for _, resLR := range resLRs {
resLRByPriority[int64(resLR.Spec.Priority)] = resLR
}
return resLRByPriority
}
func mapSDKListenerRuleByPriority(sdkLRs []albsdk.Rule) map[int64]albsdk.Rule {
sdkLRByPriority := make(map[int64]albsdk.Rule)
for _, sdkLR := range sdkLRs {
priority := int64(sdkLR.Priority)
sdkLRByPriority[priority] = sdkLR
}
return sdkLRByPriority
}
func mapResListenerRuleByListenerID(ctx context.Context, resLRs []*albmodel.ListenerRule) (map[string][]*albmodel.ListenerRule, error) {
resLRsByLsID := make(map[string][]*albmodel.ListenerRule)
for _, lr := range resLRs {
lsID, err := lr.Spec.ListenerID.Resolve(ctx)
if err != nil {
return nil, err
}
resLRsByLsID[lsID] = append(resLRsByLsID[lsID], lr)
}
return resLRsByLsID, nil
}
func mapResListenerByListenerID(ctx context.Context, resLSs []*albmodel.Listener) (map[string]*albmodel.Listener, error) {
resLSByID := make(map[string]*albmodel.Listener, len(resLSs))
for _, ls := range resLSs {
lsID, err := ls.ListenerID().Resolve(ctx)
if err != nil {
return nil, err
}
resLSByID[lsID] = ls
}
return resLSByID, nil
}