github.com/GoogleCloudPlatform/terraformer@v0.8.18/providers/gcp/clouddns.go (about)

     1  // Copyright 2018 The Terraformer Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package gcp
    16  
    17  import (
    18  	"context"
    19  	"fmt"
    20  	"log"
    21  	"strings"
    22  
    23  	"github.com/GoogleCloudPlatform/terraformer/terraformutils"
    24  
    25  	"google.golang.org/api/dns/v1"
    26  )
    27  
    28  var cloudDNSAllowEmptyValues = []string{}
    29  
    30  var cloudDNSAdditionalFields = map[string]interface{}{}
    31  
    32  type CloudDNSGenerator struct {
    33  	GCPService
    34  }
    35  
    36  func (g CloudDNSGenerator) createZonesResources(ctx context.Context, svc *dns.Service, project string) []terraformutils.Resource {
    37  	resources := []terraformutils.Resource{}
    38  	managedZonesListCall := svc.ManagedZones.List(project)
    39  	err := managedZonesListCall.Pages(ctx, func(listDNS *dns.ManagedZonesListResponse) error {
    40  		for _, zone := range listDNS.ManagedZones {
    41  			resources = append(resources, terraformutils.NewResource(
    42  				zone.Name,
    43  				zone.Name,
    44  				"google_dns_managed_zone",
    45  				g.ProviderName,
    46  				map[string]string{
    47  					"name":    zone.Name,
    48  					"project": project,
    49  				},
    50  				cloudDNSAllowEmptyValues,
    51  				cloudDNSAdditionalFields,
    52  			))
    53  			records := g.createRecordsResources(ctx, svc, project, zone.Name)
    54  			resources = append(resources, records...)
    55  		}
    56  		return nil
    57  	})
    58  	if err != nil {
    59  		log.Println(err)
    60  		return []terraformutils.Resource{}
    61  	}
    62  	return resources
    63  }
    64  func (g CloudDNSGenerator) createRecordsResources(ctx context.Context, svc *dns.Service, project, zoneName string) []terraformutils.Resource {
    65  	resources := []terraformutils.Resource{}
    66  	managedRecordsListCall := svc.ResourceRecordSets.List(project, zoneName)
    67  	err := managedRecordsListCall.Pages(ctx, func(listDNS *dns.ResourceRecordSetsListResponse) error {
    68  		for _, record := range listDNS.Rrsets {
    69  			resources = append(resources, terraformutils.NewResource(
    70  				fmt.Sprintf("%s/%s/%s", zoneName, record.Name, record.Type),
    71  				zoneName+"_"+strings.TrimSuffix(record.Name+"-"+record.Type, "."),
    72  				"google_dns_record_set",
    73  				g.ProviderName,
    74  				map[string]string{
    75  					"name":         record.Name,
    76  					"managed_zone": zoneName,
    77  					"type":         record.Type,
    78  					"project":      project,
    79  				},
    80  				cloudDNSAllowEmptyValues,
    81  				cloudDNSAdditionalFields,
    82  			))
    83  		}
    84  		return nil
    85  	})
    86  	if err != nil {
    87  		log.Println(err)
    88  		return []terraformutils.Resource{}
    89  	}
    90  	return resources
    91  }
    92  
    93  // Generate TerraformResources from GCP API,
    94  // create terraform resource for each zone + each record
    95  func (g *CloudDNSGenerator) InitResources() error {
    96  	project := g.GetArgs()["project"].(string)
    97  	ctx := context.Background()
    98  	svc, err := dns.NewService(ctx)
    99  	if err != nil {
   100  		return err
   101  	}
   102  
   103  	g.Resources = g.createZonesResources(ctx, svc, project)
   104  	return nil
   105  }
   106  
   107  func (g *CloudDNSGenerator) PostConvertHook() error {
   108  	for i, resourceRecord := range g.Resources {
   109  		if resourceRecord.InstanceInfo.Type == "google_dns_managed_zone" {
   110  			continue
   111  		}
   112  		item := resourceRecord.Item
   113  		zoneID := item["managed_zone"].(string)
   114  		for _, resourceZone := range g.Resources {
   115  			if resourceZone.InstanceInfo.Type != "google_dns_managed_zone" {
   116  				continue
   117  			}
   118  			if zoneID == resourceZone.InstanceState.ID {
   119  				g.Resources[i].Item["managed_zone"] = "google_dns_managed_zone." + resourceZone.ResourceName + ".name"
   120  				name := g.Resources[i].Item["name"].(string)
   121  				name = strings.ReplaceAll(name, resourceZone.Item["dns_name"].(string), "")
   122  				g.Resources[i].Item["name"] = name + "google_dns_managed_zone." + resourceZone.ResourceName + ".dns_name"
   123  			}
   124  		}
   125  	}
   126  	return nil
   127  }