feat(region): dns records convert to zone file

cmd/climc/shell/compute/dnszone.go

@@ -15,6 +15,11 @@
 package compute
 
 import (
+	"fmt"
+
+	"yunion.io/x/jsonutils"
+	"yunion.io/x/log"
+
 	"yunion.io/x/onecloud/cmd/climc/shell"
 	modules "yunion.io/x/onecloud/pkg/mcclient/modules/compute"
 	"yunion.io/x/onecloud/pkg/mcclient/options"
@@ -34,4 +39,15 @@ func init() {
 	cmd.Perform("purge", &options.SDnsZoneIdOptions{})
 	cmd.Perform("add-vpcs", &options.DnsZoneAddVpcsOptions{})
 	cmd.Perform("remove-vpcs", &options.DnsZoneRemoveVpcsOptions{})
+	cmd.GetWithCustomShow("exports", func(result jsonutils.JSONObject) {
+		rr := make(map[string]string)
+		err := result.Unmarshal(&rr)
+		if err != nil {
+			log.Errorf("error: %v", err)
+			return
+		}
+		for _, v := range rr {
+			fmt.Printf("%s\n", v)
+		}
+	}, &options.SDnsZoneIdOptions{})
 }

pkg/compute/models/dns_recordsets.go

@@ -346,6 +346,18 @@ func (manager *SDnsRecordSetManager) FetchCustomizeColumns(
 	return rows
 }
 
+func (self *SDnsRecordSet) ToZoneLine() string {
+	result := self.Name + "\t" + fmt.Sprint(self.TTL) + "\tIN\t" + self.DnsType + "\t"
+	if self.MxPriority != 0 {
+		result += fmt.Sprint(self.MxPriority) + "\t"
+	}
+	result += self.DnsValue
+	if self.DnsType == "CNAME" || self.DnsType == "MX" || self.DnsType == "SRV" {
+		result += "."
+	}
+	return result
+}
+
 func (self *SDnsRecordSet) Delete(ctx context.Context, userCred mcclient.TokenCredential) error {
 	policies, err := self.GetDnsTrafficPolicies()
 	if err != nil {

pkg/compute/models/dns_zones.go

@@ -578,6 +578,22 @@ func (self *SDnsZone) RealDelete(ctx context.Context, userCred mcclient.TokenCre
 	return self.SEnabledStatusInfrasResourceBase.Delete(ctx, userCred)
 }
 
+func (self *SDnsZone) GetDetailsExports(ctx context.Context, userCred mcclient.TokenCredential, query jsonutils.JSONObject) (jsonutils.JSONObject, error) {
+	records, err := self.GetDnsRecordSets()
+	if err != nil {
+		return nil, errors.Wrapf(err, "GetDnsRecordSets")
+	}
+	result := "$ORIGIN " + self.Name + ".\n"
+	lines := []string{}
+	for _, record := range records {
+		lines = append(lines, record.ToZoneLine())
+	}
+	result += strings.Join(lines, "\n")
+	rr := make(map[string]string)
+	rr["zone"] = result
+	return jsonutils.Marshal(rr), nil
+}
+
 func (self *SDnsZone) GetDnsRecordSets() ([]SDnsRecordSet, error) {
 	records := []SDnsRecordSet{}
 	q := DnsRecordSetManager.Query().Equals("dns_zone_id", self.Id)