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resource_aws_redshift_subnet_group.go
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resource_aws_redshift_subnet_group.go
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package aws
import (
"fmt"
"log"
"regexp"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/redshift"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
)
func resourceAwsRedshiftSubnetGroup() *schema.Resource {
return &schema.Resource{
Create: resourceAwsRedshiftSubnetGroupCreate,
Read: resourceAwsRedshiftSubnetGroupRead,
Update: resourceAwsRedshiftSubnetGroupUpdate,
Delete: resourceAwsRedshiftSubnetGroupDelete,
Importer: &schema.ResourceImporter{
State: schema.ImportStatePassthrough,
},
Schema: map[string]*schema.Schema{
"name": {
Type: schema.TypeString,
ForceNew: true,
Required: true,
ValidateFunc: validateRedshiftSubnetGroupName,
},
"description": {
Type: schema.TypeString,
Optional: true,
Default: "Managed by Terraform",
},
"subnet_ids": {
Type: schema.TypeSet,
Required: true,
Elem: &schema.Schema{Type: schema.TypeString},
Set: schema.HashString,
},
"tags": tagsSchema(),
},
}
}
func resourceAwsRedshiftSubnetGroupCreate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).redshiftconn
subnetIdsSet := d.Get("subnet_ids").(*schema.Set)
subnetIds := make([]*string, subnetIdsSet.Len())
for i, subnetId := range subnetIdsSet.List() {
subnetIds[i] = aws.String(subnetId.(string))
}
tags := tagsFromMapRedshift(d.Get("tags").(map[string]interface{}))
createOpts := redshift.CreateClusterSubnetGroupInput{
ClusterSubnetGroupName: aws.String(d.Get("name").(string)),
Description: aws.String(d.Get("description").(string)),
SubnetIds: subnetIds,
Tags: tags,
}
log.Printf("[DEBUG] Create Redshift Subnet Group: %#v", createOpts)
_, err := conn.CreateClusterSubnetGroup(&createOpts)
if err != nil {
return fmt.Errorf("Error creating Redshift Subnet Group: %s", err)
}
d.SetId(*createOpts.ClusterSubnetGroupName)
log.Printf("[INFO] Redshift Subnet Group ID: %s", d.Id())
return resourceAwsRedshiftSubnetGroupRead(d, meta)
}
func resourceAwsRedshiftSubnetGroupRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).redshiftconn
describeOpts := redshift.DescribeClusterSubnetGroupsInput{
ClusterSubnetGroupName: aws.String(d.Id()),
}
describeResp, err := conn.DescribeClusterSubnetGroups(&describeOpts)
if err != nil {
if ec2err, ok := err.(awserr.Error); ok && ec2err.Code() == "ClusterSubnetGroupNotFoundFault" {
log.Printf("[INFO] Redshift Subnet Group: %s was not found", d.Id())
d.SetId("")
return nil
}
return err
}
if len(describeResp.ClusterSubnetGroups) == 0 {
return fmt.Errorf("Unable to find Redshift Subnet Group: %#v", describeResp.ClusterSubnetGroups)
}
d.Set("name", d.Id())
d.Set("description", describeResp.ClusterSubnetGroups[0].Description)
d.Set("subnet_ids", subnetIdsToSlice(describeResp.ClusterSubnetGroups[0].Subnets))
if err := d.Set("tags", tagsToMapRedshift(describeResp.ClusterSubnetGroups[0].Tags)); err != nil {
return fmt.Errorf("[DEBUG] Error setting Redshift Subnet Group Tags: %#v", err)
}
return nil
}
func resourceAwsRedshiftSubnetGroupUpdate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).redshiftconn
arn, tagErr := buildRedshiftSubnetGroupARN(d.Id(), meta.(*AWSClient).partition, meta.(*AWSClient).accountid, meta.(*AWSClient).region)
if tagErr != nil {
return fmt.Errorf("Error building ARN for Redshift Subnet Group, not updating Tags for Subnet Group %s", d.Id())
} else {
if tagErr := setTagsRedshift(conn, d, arn); tagErr != nil {
return tagErr
}
}
if d.HasChange("subnet_ids") || d.HasChange("description") {
_, n := d.GetChange("subnet_ids")
if n == nil {
n = new(schema.Set)
}
ns := n.(*schema.Set)
var sIds []*string
for _, s := range ns.List() {
sIds = append(sIds, aws.String(s.(string)))
}
_, err := conn.ModifyClusterSubnetGroup(&redshift.ModifyClusterSubnetGroupInput{
ClusterSubnetGroupName: aws.String(d.Id()),
Description: aws.String(d.Get("description").(string)),
SubnetIds: sIds,
})
if err != nil {
return err
}
}
return nil
}
func resourceAwsRedshiftSubnetGroupDelete(d *schema.ResourceData, meta interface{}) error {
stateConf := &resource.StateChangeConf{
Pending: []string{"pending"},
Target: []string{"destroyed"},
Refresh: resourceAwsRedshiftSubnetGroupDeleteRefreshFunc(d, meta),
Timeout: 3 * time.Minute,
MinTimeout: 1 * time.Second,
}
_, err := stateConf.WaitForState()
return err
}
func resourceAwsRedshiftSubnetGroupDeleteRefreshFunc(d *schema.ResourceData, meta interface{}) resource.StateRefreshFunc {
conn := meta.(*AWSClient).redshiftconn
return func() (interface{}, string, error) {
deleteOpts := redshift.DeleteClusterSubnetGroupInput{
ClusterSubnetGroupName: aws.String(d.Id()),
}
if _, err := conn.DeleteClusterSubnetGroup(&deleteOpts); err != nil {
redshiftErr, ok := err.(awserr.Error)
if !ok {
return d, "error", err
}
if redshiftErr.Code() != "ClusterSubnetGroupNotFoundFault" {
return d, "error", err
}
}
return d, "destroyed", nil
}
}
func subnetIdsToSlice(subnetIds []*redshift.Subnet) []string {
subnetsSlice := make([]string, 0, len(subnetIds))
for _, s := range subnetIds {
subnetsSlice = append(subnetsSlice, *s.SubnetIdentifier)
}
return subnetsSlice
}
func validateRedshiftSubnetGroupName(v interface{}, k string) (ws []string, errors []error) {
value := v.(string)
if !regexp.MustCompile(`^[0-9a-z-]+$`).MatchString(value) {
errors = append(errors, fmt.Errorf(
"only lowercase alphanumeric characters and hyphens allowed in %q", k))
}
if len(value) > 255 {
errors = append(errors, fmt.Errorf(
"%q cannot be longer than 255 characters", k))
}
if regexp.MustCompile(`(?i)^default$`).MatchString(value) {
errors = append(errors, fmt.Errorf(
"%q is not allowed as %q", "Default", k))
}
return
}
func buildRedshiftSubnetGroupARN(identifier, partition, accountid, region string) (string, error) {
if partition == "" {
return "", fmt.Errorf("Unable to construct Subnet Group ARN because of missing AWS partition")
}
if accountid == "" {
return "", fmt.Errorf("Unable to construct Subnet Group ARN because of missing AWS Account ID")
}
arn := fmt.Sprintf("arn:%s:redshift:%s:%s:subnetgroup:%s", partition, region, accountid, identifier)
return arn, nil
}