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resource_aws_eip.go
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resource_aws_eip.go
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package aws
import (
"fmt"
"log"
"strings"
"time"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
"github.com/mitchellh/goamz/ec2"
)
func resourceAwsEip() *schema.Resource {
return &schema.Resource{
Create: resourceAwsEipCreate,
Read: resourceAwsEipRead,
Update: resourceAwsEipUpdate,
Delete: resourceAwsEipDelete,
Schema: map[string]*schema.Schema{
"vpc": &schema.Schema{
Type: schema.TypeBool,
Optional: true,
ForceNew: true,
},
"instance": &schema.Schema{
Type: schema.TypeString,
Optional: true,
},
"allocation_id": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"association_id": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"domain": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"public_ip": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"private_ip": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
},
}
}
func resourceAwsEipCreate(d *schema.ResourceData, meta interface{}) error {
ec2conn := meta.(*AWSClient).ec2conn
// By default, we're not in a VPC
domainOpt := ""
if v := d.Get("vpc"); v != nil && v.(bool) {
domainOpt = "vpc"
}
allocOpts := ec2.AllocateAddress{
Domain: domainOpt,
}
log.Printf("[DEBUG] EIP create configuration: %#v", allocOpts)
allocResp, err := ec2conn.AllocateAddress(&allocOpts)
if err != nil {
return fmt.Errorf("Error creating EIP: %s", err)
}
// The domain tells us if we're in a VPC or not
d.Set("domain", allocResp.Domain)
// Assign the eips (unique) allocation id for use later
// the EIP api has a conditional unique ID (really), so
// if we're in a VPC we need to save the ID as such, otherwise
// it defaults to using the public IP
log.Printf("[DEBUG] EIP Allocate: %#v", allocResp)
if d.Get("domain").(string) == "vpc" {
d.SetId(allocResp.AllocationId)
} else {
d.SetId(allocResp.PublicIp)
}
log.Printf("[INFO] EIP ID: %s (domain: %v)", d.Id(), allocResp.Domain)
return resourceAwsEipUpdate(d, meta)
}
func resourceAwsEipRead(d *schema.ResourceData, meta interface{}) error {
ec2conn := meta.(*AWSClient).ec2conn
domain := resourceAwsEipDomain(d)
id := d.Id()
assocIds := []string{}
publicIps := []string{}
if domain == "vpc" {
assocIds = []string{id}
} else {
publicIps = []string{id}
}
log.Printf(
"[DEBUG] EIP describe configuration: %#v, %#v (domain: %s)",
assocIds, publicIps, domain)
describeAddresses, err := ec2conn.Addresses(publicIps, assocIds, nil)
if err != nil {
if ec2err, ok := err.(*ec2.Error); ok && ec2err.Code == "InvalidAllocationID.NotFound" {
d.SetId("")
return nil
}
return fmt.Errorf("Error retrieving EIP: %s", err)
}
// Verify AWS returned our EIP
if len(describeAddresses.Addresses) != 1 ||
describeAddresses.Addresses[0].AllocationId != id ||
describeAddresses.Addresses[0].PublicIp != id {
if err != nil {
return fmt.Errorf("Unable to find EIP: %#v", describeAddresses.Addresses)
}
}
address := describeAddresses.Addresses[0]
d.Set("association_id", address.AssociationId)
d.Set("instance", address.InstanceId)
d.Set("public_ip", address.PublicIp)
d.Set("private_ip", address.PrivateIpAddress)
return nil
}
func resourceAwsEipUpdate(d *schema.ResourceData, meta interface{}) error {
ec2conn := meta.(*AWSClient).ec2conn
domain := resourceAwsEipDomain(d)
// Only register with an instance if we have one
if v, ok := d.GetOk("instance"); ok {
instanceId := v.(string)
assocOpts := ec2.AssociateAddress{
InstanceId: instanceId,
PublicIp: d.Id(),
}
// more unique ID conditionals
if domain == "vpc" {
assocOpts = ec2.AssociateAddress{
InstanceId: instanceId,
AllocationId: d.Id(),
PublicIp: "",
}
}
log.Printf("[DEBUG] EIP associate configuration: %#v (domain: %v)", assocOpts, domain)
_, err := ec2conn.AssociateAddress(&assocOpts)
if err != nil {
return fmt.Errorf("Failure associating instances: %s", err)
}
}
return resourceAwsEipRead(d, meta)
}
func resourceAwsEipDelete(d *schema.ResourceData, meta interface{}) error {
ec2conn := meta.(*AWSClient).ec2conn
if err := resourceAwsEipRead(d, meta); err != nil {
return err
}
if d.Id() == "" {
// This might happen from the read
return nil
}
// If we are attached to an instance, detach first.
if d.Get("instance").(string) != "" {
log.Printf("[DEBUG] Disassociating EIP: %s", d.Id())
var err error
switch resourceAwsEipDomain(d) {
case "vpc":
_, err = ec2conn.DisassociateAddress(d.Get("association_id").(string))
case "standard":
_, err = ec2conn.DisassociateAddressClassic(d.Get("public_ip").(string))
}
if err != nil {
return err
}
}
domain := resourceAwsEipDomain(d)
return resource.Retry(3*time.Minute, func() error {
var err error
switch domain {
case "vpc":
log.Printf(
"[DEBUG] EIP release (destroy) address allocation: %v",
d.Id())
_, err = ec2conn.ReleaseAddress(d.Id())
case "standard":
log.Printf("[DEBUG] EIP release (destroy) address: %v", d.Id())
_, err = ec2conn.ReleasePublicAddress(d.Id())
}
if err == nil {
return nil
}
if _, ok := err.(*ec2.Error); !ok {
return resource.RetryError{err}
}
return err
})
}
func resourceAwsEipDomain(d *schema.ResourceData) string {
if v, ok := d.GetOk("domain"); ok {
return v.(string)
} else if strings.Contains(d.Id(), "eipalloc") {
// We have to do this for backwards compatibility since TF 0.1
// didn't have the "domain" computed attribute.
return "vpc"
}
return "standard"
}