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handler.go
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handler.go
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// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and Gardener contributors
//
// SPDX-License-Identifier: Apache-2.0
package alicloud
import (
"github.com/aliyun/alibaba-cloud-sdk-go/services/alidns"
"github.com/gardener/controller-manager-library/pkg/logger"
"github.com/gardener/external-dns-management/pkg/dns/provider"
perrs "github.com/gardener/external-dns-management/pkg/dns/provider/errors"
"github.com/gardener/external-dns-management/pkg/dns/provider/raw"
)
type Handler struct {
provider.DefaultDNSHandler
config provider.DNSHandlerConfig
cache provider.ZoneCache
access Access
}
var _ provider.DNSHandler = &Handler{}
func NewHandler(c *provider.DNSHandlerConfig) (provider.DNSHandler, error) {
var err error
h := &Handler{
DefaultDNSHandler: provider.NewDefaultDNSHandler(TYPE_CODE),
config: *c,
}
accessKeyID, err := c.GetRequiredProperty("ACCESS_KEY_ID", "accessKeyID")
if err != nil {
return nil, err
}
accessKeySecret, err := c.GetRequiredProperty("ACCESS_KEY_SECRET", "accessKeySecret")
if err != nil {
return nil, err
}
access, err := NewAccess(accessKeyID, accessKeySecret, c.Metrics, c.RateLimiter)
if err != nil {
return nil, perrs.WrapAsHandlerError(err, "Creating alicloud access with client credentials failed")
}
h.access = access
h.cache, err = c.ZoneCacheFactory.CreateZoneCache(provider.CacheZonesOnly, c.Metrics, h.getZones, h.getZoneState)
if err != nil {
return nil, err
}
return h, nil
}
func (h *Handler) Release() {
h.cache.Release()
}
func (h *Handler) GetZones() (provider.DNSHostedZones, error) {
return h.cache.GetZones()
}
func (h *Handler) getZones(_ provider.ZoneCache) (provider.DNSHostedZones, error) {
blockedZones := h.config.Options.AdvancedOptions.GetBlockedZones()
raw := []alidns.Domain{}
{
f := func(zone alidns.Domain) (bool, error) {
if blockedZones.Contains(zone.DomainId) {
h.config.Logger.Infof("ignoring blocked zone id: %s", zone.DomainId)
} else {
raw = append(raw, zone)
}
return true, nil
}
err := h.access.ListDomains(f)
if err != nil {
return nil, perrs.WrapAsHandlerError(err, "list domains failed")
}
}
zones := provider.DNSHostedZones{}
{
for _, z := range raw {
hostedZone := provider.NewDNSHostedZone(h.ProviderType(), z.DomainId, z.DomainName, z.DomainName, false)
zones = append(zones, hostedZone)
}
}
return zones, nil
}
func (h *Handler) GetZoneState(zone provider.DNSHostedZone) (provider.DNSZoneState, error) {
return h.cache.GetZoneState(zone)
}
func (h *Handler) getZoneState(zone provider.DNSHostedZone, _ provider.ZoneCache) (provider.DNSZoneState, error) {
state := raw.NewState()
f := func(r alidns.Record) (bool, error) {
a := (*Record)(&r)
state.AddRecord(a)
// fmt.Printf("**** found %s %s: %s\n", a.GetType(), a.GetDNSName(), a.GetValue() )
return true, nil
}
err := h.access.ListRecords(zone.Id().ID, zone.Key(), f)
if err != nil {
return nil, perrs.WrapAsHandlerError(err, "list records failed")
}
state.CalculateDNSSets()
return state, nil
}
func (h *Handler) ReportZoneStateConflict(zone provider.DNSHostedZone, err error) bool {
return h.cache.ReportZoneStateConflict(zone, err)
}
func (h *Handler) ExecuteRequests(logger logger.LogContext, zone provider.DNSHostedZone, state provider.DNSZoneState, reqs []*provider.ChangeRequest) error {
err := raw.ExecuteRequests(logger, &h.config, h.access, zone, state, reqs)
h.cache.ApplyRequests(logger, err, zone, reqs)
return err
}
func (h *Handler) GetRecordSet(zone provider.DNSHostedZone, dnsName, recordType string) (provider.DedicatedRecordSet, error) {
rs, err := h.access.GetRecordSet(dnsName, recordType, zone)
if err != nil {
return nil, err
}
d := provider.DedicatedRecordSet{}
for _, r := range rs {
d = append(d, r)
}
return d, nil
}
func (h *Handler) CreateOrUpdateRecordSet(logger logger.LogContext, zone provider.DNSHostedZone, old, new provider.DedicatedRecordSet) error {
err := h.DeleteRecordSet(logger, zone, old)
if err != nil {
return err
}
for _, r := range new {
r0 := h.access.NewRecord(r.GetDNSName(), r.GetType(), r.GetValue(), zone, int64(r.GetTTL()))
err = h.access.CreateRecord(r0, zone)
if err != nil {
return err
}
}
return err
}
func (h *Handler) DeleteRecordSet(_ logger.LogContext, zone provider.DNSHostedZone, rs provider.DedicatedRecordSet) error {
for _, r := range rs {
if r.(*Record).GetId() != "" {
err := h.access.DeleteRecord(r.(*Record), zone)
if err != nil {
return err
}
}
}
return nil
}