github.com/nicgrayson/terraform@v0.4.3-0.20150415203910-c4de50829380/builtin/providers/aws/resource_aws_db_subnet_group.go (about)

     1  package aws
     2  
     3  import (
     4  	"fmt"
     5  	"log"
     6  	"strings"
     7  	"time"
     8  
     9  	"github.com/awslabs/aws-sdk-go/aws"
    10  	"github.com/awslabs/aws-sdk-go/service/rds"
    11  	"github.com/hashicorp/terraform/helper/hashcode"
    12  	"github.com/hashicorp/terraform/helper/resource"
    13  	"github.com/hashicorp/terraform/helper/schema"
    14  )
    15  
    16  func resourceAwsDbSubnetGroup() *schema.Resource {
    17  	return &schema.Resource{
    18  		Create: resourceAwsDbSubnetGroupCreate,
    19  		Read:   resourceAwsDbSubnetGroupRead,
    20  		Delete: resourceAwsDbSubnetGroupDelete,
    21  
    22  		Schema: map[string]*schema.Schema{
    23  			"name": &schema.Schema{
    24  				Type:     schema.TypeString,
    25  				ForceNew: true,
    26  				Required: true,
    27  			},
    28  
    29  			"description": &schema.Schema{
    30  				Type:     schema.TypeString,
    31  				Required: true,
    32  				ForceNew: true,
    33  			},
    34  
    35  			"subnet_ids": &schema.Schema{
    36  				Type:     schema.TypeSet,
    37  				Required: true,
    38  				ForceNew: true,
    39  				Elem:     &schema.Schema{Type: schema.TypeString},
    40  				Set: func(v interface{}) int {
    41  					return hashcode.String(v.(string))
    42  				},
    43  			},
    44  		},
    45  	}
    46  }
    47  
    48  func resourceAwsDbSubnetGroupCreate(d *schema.ResourceData, meta interface{}) error {
    49  	rdsconn := meta.(*AWSClient).rdsconn
    50  
    51  	subnetIdsSet := d.Get("subnet_ids").(*schema.Set)
    52  	subnetIds := make([]*string, subnetIdsSet.Len())
    53  	for i, subnetId := range subnetIdsSet.List() {
    54  		subnetIds[i] = aws.String(subnetId.(string))
    55  	}
    56  
    57  	createOpts := rds.CreateDBSubnetGroupInput{
    58  		DBSubnetGroupName:        aws.String(d.Get("name").(string)),
    59  		DBSubnetGroupDescription: aws.String(d.Get("description").(string)),
    60  		SubnetIDs:                subnetIds,
    61  	}
    62  
    63  	log.Printf("[DEBUG] Create DB Subnet Group: %#v", createOpts)
    64  	_, err := rdsconn.CreateDBSubnetGroup(&createOpts)
    65  	if err != nil {
    66  		return fmt.Errorf("Error creating DB Subnet Group: %s", err)
    67  	}
    68  
    69  	d.SetId(*createOpts.DBSubnetGroupName)
    70  	log.Printf("[INFO] DB Subnet Group ID: %s", d.Id())
    71  	return resourceAwsDbSubnetGroupRead(d, meta)
    72  }
    73  
    74  func resourceAwsDbSubnetGroupRead(d *schema.ResourceData, meta interface{}) error {
    75  	rdsconn := meta.(*AWSClient).rdsconn
    76  
    77  	describeOpts := rds.DescribeDBSubnetGroupsInput{
    78  		DBSubnetGroupName: aws.String(d.Id()),
    79  	}
    80  
    81  	describeResp, err := rdsconn.DescribeDBSubnetGroups(&describeOpts)
    82  	if err != nil {
    83  		if ec2err, ok := err.(aws.APIError); ok && ec2err.Code == "DBSubnetGroupNotFoundFault" {
    84  			// Update state to indicate the db subnet no longer exists.
    85  			d.SetId("")
    86  			return nil
    87  		}
    88  		return err
    89  	}
    90  
    91  	if len(describeResp.DBSubnetGroups) == 0 {
    92  		return fmt.Errorf("Unable to find DB Subnet Group: %#v", describeResp.DBSubnetGroups)
    93  	}
    94  
    95  	var subnetGroup *rds.DBSubnetGroup
    96  	for _, s := range describeResp.DBSubnetGroups {
    97  		// AWS is down casing the name provided, so we compare lower case versions
    98  		// of the names. We lower case both our name and their name in the check,
    99  		// incase they change that someday.
   100  		if strings.ToLower(d.Id()) == strings.ToLower(*s.DBSubnetGroupName) {
   101  			subnetGroup = describeResp.DBSubnetGroups[0]
   102  		}
   103  	}
   104  
   105  	if subnetGroup.DBSubnetGroupName == nil {
   106  		return fmt.Errorf("Unable to find DB Subnet Group: %#v", describeResp.DBSubnetGroups)
   107  	}
   108  
   109  	d.Set("name", *subnetGroup.DBSubnetGroupName)
   110  	d.Set("description", *subnetGroup.DBSubnetGroupDescription)
   111  
   112  	subnets := make([]string, 0, len(subnetGroup.Subnets))
   113  	for _, s := range subnetGroup.Subnets {
   114  		subnets = append(subnets, *s.SubnetIdentifier)
   115  	}
   116  	d.Set("subnet_ids", subnets)
   117  
   118  	return nil
   119  }
   120  
   121  func resourceAwsDbSubnetGroupDelete(d *schema.ResourceData, meta interface{}) error {
   122  	stateConf := &resource.StateChangeConf{
   123  		Pending:    []string{"pending"},
   124  		Target:     "destroyed",
   125  		Refresh:    resourceAwsDbSubnetGroupDeleteRefreshFunc(d, meta),
   126  		Timeout:    3 * time.Minute,
   127  		MinTimeout: 1 * time.Second,
   128  	}
   129  	_, err := stateConf.WaitForState()
   130  	return err
   131  }
   132  
   133  func resourceAwsDbSubnetGroupDeleteRefreshFunc(
   134  	d *schema.ResourceData,
   135  	meta interface{}) resource.StateRefreshFunc {
   136  	rdsconn := meta.(*AWSClient).rdsconn
   137  
   138  	return func() (interface{}, string, error) {
   139  
   140  		deleteOpts := rds.DeleteDBSubnetGroupInput{
   141  			DBSubnetGroupName: aws.String(d.Id()),
   142  		}
   143  
   144  		if _, err := rdsconn.DeleteDBSubnetGroup(&deleteOpts); err != nil {
   145  			rdserr, ok := err.(aws.APIError)
   146  			if !ok {
   147  				return d, "error", err
   148  			}
   149  
   150  			if rdserr.Code != "DBSubnetGroupNotFoundFault" {
   151  				return d, "error", err
   152  			}
   153  		}
   154  
   155  		return d, "destroyed", nil
   156  	}
   157  }