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dns.go
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dns.go
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package fakerp
import (
"context"
"strings"
azdns "github.com/Azure/azure-sdk-for-go/services/dns/mgmt/2017-10-01/dns"
"github.com/Azure/go-autorest/autorest/to"
"github.com/sirupsen/logrus"
"github.com/openshift/openshift-azure/pkg/api"
"github.com/openshift/openshift-azure/pkg/util/azureclient"
"github.com/openshift/openshift-azure/pkg/util/azureclient/dns"
)
type dnsManager struct {
zc dns.ZonesClient
rsc dns.RecordSetsClient
dnsResourceGroup string
dnsDomain string
}
func newDNSManager(ctx context.Context, log *logrus.Entry, subscriptionID, dnsResourceGroup, dnsDomain string) (*dnsManager, error) {
authorizer, err := azureclient.GetAuthorizerFromContext(ctx, api.ContextKeyClientAuthorizer)
if err != nil {
return nil, err
}
return &dnsManager{
zc: dns.NewZonesClient(ctx, log, subscriptionID, authorizer),
rsc: dns.NewRecordSetsClient(ctx, log, subscriptionID, authorizer),
dnsResourceGroup: dnsResourceGroup,
dnsDomain: dnsDomain,
}, nil
}
func (dm *dnsManager) createOrUpdateZone(ctx context.Context, resourceGroup, zoneName, parentResourceGroup, parentZoneName string) error {
zone, err := dm.zc.CreateOrUpdate(ctx, resourceGroup, zoneName, azdns.Zone{
Location: to.StringPtr("global"),
}, "", "")
if err != nil {
return err
}
// update TTLs
rs, err := dm.rsc.Get(ctx, resourceGroup, zoneName, "@", azdns.SOA)
if err != nil {
return err
}
rs.RecordSetProperties.TTL = to.Int64Ptr(60)
rs.RecordSetProperties.SoaRecord.RefreshTime = to.Int64Ptr(60)
rs.RecordSetProperties.SoaRecord.RetryTime = to.Int64Ptr(60)
rs.RecordSetProperties.SoaRecord.ExpireTime = to.Int64Ptr(60)
rs.RecordSetProperties.SoaRecord.MinimumTTL = to.Int64Ptr(60)
_, err = dm.rsc.CreateOrUpdate(ctx, resourceGroup, zoneName, "@", azdns.SOA, rs, "", "")
if err != nil {
return err
}
rs, err = dm.rsc.Get(ctx, resourceGroup, zoneName, "@", azdns.NS)
if err != nil {
return err
}
rs.RecordSetProperties.TTL = to.Int64Ptr(60)
_, err = dm.rsc.CreateOrUpdate(ctx, resourceGroup, zoneName, "@", azdns.NS, rs, "", "")
if err != nil {
return err
}
nsRecords := make([]azdns.NsRecord, len(*zone.NameServers))
for i := range *zone.NameServers {
nsRecords[i] = azdns.NsRecord{
Nsdname: &(*zone.NameServers)[i],
}
}
// create glue record in parent zone
_, err = dm.rsc.CreateOrUpdate(ctx, parentResourceGroup, parentZoneName, strings.Split(zoneName, ".")[0], azdns.NS, azdns.RecordSet{
RecordSetProperties: &azdns.RecordSetProperties{
TTL: to.Int64Ptr(60),
NsRecords: &nsRecords,
},
}, "", "")
return err
}
func (dm *dnsManager) deleteZone(ctx context.Context, resourceGroup, zoneName, parentResourceGroup, parentZoneName string) error {
// delete glue record in parent zone
_, err := dm.rsc.Delete(ctx, parentResourceGroup, parentZoneName, strings.Split(zoneName, ".")[0], azdns.NS, "")
if err != nil {
return err
}
return dm.zc.Delete(ctx, resourceGroup, zoneName, "")
}
func (dm *dnsManager) createOrUpdateOCPDNS(ctx context.Context, cs *api.OpenShiftManagedCluster) error {
parentZone := strings.SplitN(cs.Properties.RouterProfiles[0].PublicSubdomain, ".", 2)[1]
// <random>.osacloud.dev zone
err := dm.createOrUpdateZone(ctx, cs.Properties.AzProfile.ResourceGroup, parentZone, dm.dnsResourceGroup, dm.dnsDomain)
if err != nil {
return err
}
// openshift.<random>.osacloud.dev cname
_, err = dm.rsc.CreateOrUpdate(ctx, cs.Properties.AzProfile.ResourceGroup, parentZone, "openshift", azdns.CNAME, azdns.RecordSet{
RecordSetProperties: &azdns.RecordSetProperties{
CnameRecord: &azdns.CnameRecord{
Cname: &cs.Properties.FQDN,
},
TTL: to.Int64Ptr(60),
},
}, "", "")
// apps.<random>.osacloud.dev zone
err = dm.createOrUpdateZone(ctx, cs.Properties.AzProfile.ResourceGroup, cs.Properties.RouterProfiles[0].PublicSubdomain, cs.Properties.AzProfile.ResourceGroup, parentZone)
if err != nil {
return err
}
// *.apps.<random>.osacloud.dev cname
_, err = dm.rsc.CreateOrUpdate(ctx, cs.Properties.AzProfile.ResourceGroup, cs.Properties.RouterProfiles[0].PublicSubdomain, "*", azdns.CNAME, azdns.RecordSet{
RecordSetProperties: &azdns.RecordSetProperties{
CnameRecord: &azdns.CnameRecord{
Cname: &cs.Properties.RouterProfiles[0].FQDN,
},
TTL: to.Int64Ptr(60),
},
}, "", "")
return err
}
func (dm *dnsManager) deleteOCPDNS(ctx context.Context, cs *api.OpenShiftManagedCluster) error {
parentZone := strings.SplitN(cs.Properties.RouterProfiles[0].PublicSubdomain, ".", 2)[1]
// apps.<random>.osacloud.dev zone
err := dm.deleteZone(ctx, cs.Properties.AzProfile.ResourceGroup, cs.Properties.RouterProfiles[0].PublicSubdomain, cs.Properties.AzProfile.ResourceGroup, parentZone)
if err != nil {
return err
}
// <random>.osacloud.dev zone
return dm.deleteZone(ctx, cs.Properties.AzProfile.ResourceGroup, parentZone, dm.dnsResourceGroup, dm.dnsDomain)
}