terraform/builtin/providers/aws/resource_aws_internet_gatew...

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package aws
import (
"fmt"
"log"
"time"
"github.com/hashicorp/terraform/helper/diff"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/terraform"
"github.com/mitchellh/goamz/ec2"
)
func resource_aws_internet_gateway_create(
s *terraform.ResourceState,
d *terraform.ResourceDiff,
meta interface{}) (*terraform.ResourceState, error) {
p := meta.(*ResourceProvider)
ec2conn := p.ec2conn
// Create the gateway
log.Printf("[DEBUG] Creating internet gateway")
resp, err := ec2conn.CreateInternetGateway(nil)
if err != nil {
return nil, fmt.Errorf("Error creating subnet: %s", err)
}
// Get the ID and store it
ig := &resp.InternetGateway
s.ID = ig.InternetGatewayId
log.Printf("[INFO] InternetGateway ID: %s", s.ID)
// Update our attributes and return
return resource_aws_internet_gateway_update(s, d, meta)
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}
func resource_aws_internet_gateway_update(
s *terraform.ResourceState,
d *terraform.ResourceDiff,
meta interface{}) (*terraform.ResourceState, error) {
p := meta.(*ResourceProvider)
ec2conn := p.ec2conn
// Merge the diff so we have the latest attributes
rs := s.MergeDiff(d)
// A note on the states below: the AWS docs (as of July, 2014) say
// that the states would be: attached, attaching, detached, detaching,
// but when running, I noticed that the state is usually "available" when
// it is attached.
// If we're already attached, detach it first
if err := resource_aws_internet_gateway_detach(ec2conn, s); err != nil {
return s, err
}
// Set the VPC ID to empty since we're detached at this point
delete(rs.Attributes, "vpc_id")
if attr, ok := d.Attributes["vpc_id"]; ok && attr.New != "" {
err := resource_aws_internet_gateway_attach(ec2conn, s, attr.New)
if err != nil {
return s, err
}
rs.Attributes["vpc_id"] = attr.New
}
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return rs, nil
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}
func resource_aws_internet_gateway_destroy(
s *terraform.ResourceState,
meta interface{}) error {
p := meta.(*ResourceProvider)
ec2conn := p.ec2conn
// Detach if it is attached
if err := resource_aws_internet_gateway_detach(ec2conn, s); err != nil {
return err
}
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log.Printf("[INFO] Deleting Internet Gateway: %s", s.ID)
if _, err := ec2conn.DeleteInternetGateway(s.ID); err != nil {
ec2err, ok := err.(*ec2.Error)
if ok && ec2err.Code == "InvalidInternetGatewayID.NotFound" {
return nil
}
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return fmt.Errorf("Error deleting internet gateway: %s", err)
}
// Wait for the internet gateway to actually delete
log.Printf("[DEBUG] Waiting for internet gateway (%s) to delete", s.ID)
stateConf := &resource.StateChangeConf{
Pending: []string{"available"},
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Target: "",
Refresh: IGStateRefreshFunc(ec2conn, s.ID),
Timeout: 10 * time.Minute,
}
if _, err := stateConf.WaitForState(); err != nil {
return fmt.Errorf(
"Error waiting for internet gateway (%s) to destroy",
s.ID, err)
}
return nil
}
func resource_aws_internet_gateway_refresh(
s *terraform.ResourceState,
meta interface{}) (*terraform.ResourceState, error) {
p := meta.(*ResourceProvider)
ec2conn := p.ec2conn
igRaw, _, err := IGStateRefreshFunc(ec2conn, s.ID)()
if err != nil {
return s, err
}
if igRaw == nil {
return nil, nil
}
ig := igRaw.(*ec2.InternetGateway)
return resource_aws_internet_gateway_update_state(s, ig)
}
func resource_aws_internet_gateway_diff(
s *terraform.ResourceState,
c *terraform.ResourceConfig,
meta interface{}) (*terraform.ResourceDiff, error) {
b := &diff.ResourceBuilder{
Attrs: map[string]diff.AttrType{
"vpc_id": diff.AttrTypeUpdate,
},
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}
return b.Diff(s, c)
}
func resource_aws_internet_gateway_attach(
ec2conn *ec2.EC2,
s *terraform.ResourceState,
vpcId string) error {
log.Printf(
"[INFO] Attaching Internet Gateway '%s' to VPC '%s'",
s.ID,
vpcId)
_, err := ec2conn.AttachInternetGateway(s.ID, vpcId)
if err != nil {
return err
}
// Wait for it to be fully attached before continuing
log.Printf("[DEBUG] Waiting for internet gateway (%s) to attach", s.ID)
stateConf := &resource.StateChangeConf{
Pending: []string{"detached", "attaching"},
Target: "available",
Refresh: IGAttachStateRefreshFunc(ec2conn, s.ID),
Timeout: 1 * time.Minute,
}
if _, err := stateConf.WaitForState(); err != nil {
return fmt.Errorf(
"Error waiting for internet gateway (%s) to attach: %s",
s.ID, err)
}
return nil
}
func resource_aws_internet_gateway_detach(
ec2conn *ec2.EC2,
s *terraform.ResourceState) error {
if s.Attributes["vpc_id"] == "" {
return nil
}
log.Printf(
"[INFO] Detaching Internet Gateway '%s' from VPC '%s'",
s.ID,
s.Attributes["vpc_id"])
_, err := ec2conn.DetachInternetGateway(s.ID, s.Attributes["vpc_id"])
if err != nil {
return err
}
delete(s.Attributes, "vpc_id")
// Wait for it to be fully detached before continuing
log.Printf("[DEBUG] Waiting for internet gateway (%s) to detach", s.ID)
stateConf := &resource.StateChangeConf{
Pending: []string{"attached", "detaching", "available"},
Target: "detached",
Refresh: IGAttachStateRefreshFunc(ec2conn, s.ID),
Timeout: 1 * time.Minute,
}
if _, err := stateConf.WaitForState(); err != nil {
return fmt.Errorf(
"Error waiting for internet gateway (%s) to detach: %s",
s.ID, err)
}
return nil
}
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func resource_aws_internet_gateway_update_state(
s *terraform.ResourceState,
ig *ec2.InternetGateway) (*terraform.ResourceState, error) {
return s, nil
}
// IGStateRefreshFunc returns a resource.StateRefreshFunc that is used to watch
// an internet gateway.
func IGStateRefreshFunc(conn *ec2.EC2, id string) resource.StateRefreshFunc {
return func() (interface{}, string, error) {
resp, err := conn.DescribeInternetGateways([]string{id}, ec2.NewFilter())
if err != nil {
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ec2err, ok := err.(*ec2.Error)
if ok && ec2err.Code == "InvalidInternetGatewayID.NotFound" {
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resp = nil
} else {
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log.Printf("[ERROR] Error on IGStateRefresh: %s", err)
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return nil, "", err
}
}
if resp == nil {
// Sometimes AWS just has consistency issues and doesn't see
// our instance yet. Return an empty state.
return nil, "", nil
}
ig := &resp.InternetGateways[0]
return ig, "available", nil
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}
}
// IGAttachStateRefreshFunc returns a resource.StateRefreshFunc that is used
// watch the state of an internet gateway's attachment.
func IGAttachStateRefreshFunc(conn *ec2.EC2, id string) resource.StateRefreshFunc {
return func() (interface{}, string, error) {
resp, err := conn.DescribeInternetGateways([]string{id}, ec2.NewFilter())
if err != nil {
ec2err, ok := err.(*ec2.Error)
if ok && ec2err.Code == "InvalidInternetGatewayID.NotFound" {
resp = nil
} else {
log.Printf("[ERROR] Error on IGStateRefresh: %s", err)
return nil, "", err
}
}
if resp == nil {
// Sometimes AWS just has consistency issues and doesn't see
// our instance yet. Return an empty state.
return nil, "", nil
}
ig := &resp.InternetGateways[0]
if len(ig.Attachments) == 0 {
// No attachments, we're detached
return ig, "detached", nil
}
return ig, ig.Attachments[0].State, nil
}
}