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resource_aws_db_subnet_group.go
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resource_aws_db_subnet_group.go
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package aws
import (
"fmt"
"log"
"strings"
"time"
"github.com/hashicorp/aws-sdk-go/aws"
"github.com/hashicorp/aws-sdk-go/gen/rds"
"github.com/hashicorp/terraform/helper/hashcode"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
)
func resourceAwsDbSubnetGroup() *schema.Resource {
return &schema.Resource{
Create: resourceAwsDbSubnetGroupCreate,
Read: resourceAwsDbSubnetGroupRead,
Delete: resourceAwsDbSubnetGroupDelete,
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
ForceNew: true,
Required: true,
},
"description": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"subnet_ids": &schema.Schema{
Type: schema.TypeSet,
Required: true,
ForceNew: true,
Elem: &schema.Schema{Type: schema.TypeString},
Set: func(v interface{}) int {
return hashcode.String(v.(string))
},
},
},
}
}
func resourceAwsDbSubnetGroupCreate(d *schema.ResourceData, meta interface{}) error {
rdsconn := meta.(*AWSClient).rdsconn
subnetIdsSet := d.Get("subnet_ids").(*schema.Set)
subnetIds := make([]string, subnetIdsSet.Len())
for i, subnetId := range subnetIdsSet.List() {
subnetIds[i] = subnetId.(string)
}
createOpts := rds.CreateDBSubnetGroupMessage{
DBSubnetGroupName: aws.String(d.Get("name").(string)),
DBSubnetGroupDescription: aws.String(d.Get("description").(string)),
SubnetIDs: subnetIds,
}
log.Printf("[DEBUG] Create DB Subnet Group: %#v", createOpts)
_, err := rdsconn.CreateDBSubnetGroup(&createOpts)
if err != nil {
return fmt.Errorf("Error creating DB Subnet Group: %s", err)
}
d.SetId(*createOpts.DBSubnetGroupName)
log.Printf("[INFO] DB Subnet Group ID: %s", d.Id())
return resourceAwsDbSubnetGroupRead(d, meta)
}
func resourceAwsDbSubnetGroupRead(d *schema.ResourceData, meta interface{}) error {
rdsconn := meta.(*AWSClient).rdsconn
describeOpts := rds.DescribeDBSubnetGroupsMessage{
DBSubnetGroupName: aws.String(d.Id()),
}
describeResp, err := rdsconn.DescribeDBSubnetGroups(&describeOpts)
if err != nil {
if ec2err, ok := err.(aws.APIError); ok && ec2err.Code == "DBSubnetGroupNotFoundFault" {
// Update state to indicate the db subnet no longer exists.
d.SetId("")
return nil
}
return err
}
if len(describeResp.DBSubnetGroups) == 0 {
return fmt.Errorf("Unable to find DB Subnet Group: %#v", describeResp.DBSubnetGroups)
}
var subnetGroup rds.DBSubnetGroup
for _, s := range describeResp.DBSubnetGroups {
// AWS is down casing the name provided, so we compare lower case versions
// of the names. We lower case both our name and their name in the check,
// incase they change that someday.
if strings.ToLower(d.Id()) == strings.ToLower(*s.DBSubnetGroupName) {
subnetGroup = describeResp.DBSubnetGroups[0]
}
}
if subnetGroup.DBSubnetGroupName == nil {
return fmt.Errorf("Unable to find DB Subnet Group: %#v", describeResp.DBSubnetGroups)
}
d.Set("name", *subnetGroup.DBSubnetGroupName)
d.Set("description", *subnetGroup.DBSubnetGroupDescription)
subnets := make([]string, 0, len(subnetGroup.Subnets))
for _, s := range subnetGroup.Subnets {
subnets = append(subnets, *s.SubnetIdentifier)
}
d.Set("subnet_ids", subnets)
return nil
}
func resourceAwsDbSubnetGroupDelete(d *schema.ResourceData, meta interface{}) error {
stateConf := &resource.StateChangeConf{
Pending: []string{"pending"},
Target: "destroyed",
Refresh: resourceAwsDbSubnetGroupDeleteRefreshFunc(d, meta),
Timeout: 3 * time.Minute,
MinTimeout: 1 * time.Second,
}
_, err := stateConf.WaitForState()
return err
}
func resourceAwsDbSubnetGroupDeleteRefreshFunc(
d *schema.ResourceData,
meta interface{}) resource.StateRefreshFunc {
rdsconn := meta.(*AWSClient).rdsconn
return func() (interface{}, string, error) {
deleteOpts := rds.DeleteDBSubnetGroupMessage{
DBSubnetGroupName: aws.String(d.Id()),
}
if err := rdsconn.DeleteDBSubnetGroup(&deleteOpts); err != nil {
rdserr, ok := err.(aws.APIError)
if !ok {
return d, "error", err
}
if rdserr.Code != "DBSubnetGroupNotFoundFault" {
return d, "error", err
}
}
return d, "destroyed", nil
}
}