terraform/builtin/providers/aws/resource_aws_launch_configu...

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package aws
import (
"bytes"
"crypto/sha1"
"encoding/base64"
"encoding/hex"
"fmt"
"log"
"time"
"github.com/awslabs/aws-sdk-go/aws"
"github.com/awslabs/aws-sdk-go/service/autoscaling"
"github.com/awslabs/aws-sdk-go/service/ec2"
"github.com/hashicorp/terraform/helper/hashcode"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
)
func resourceAwsLaunchConfiguration() *schema.Resource {
return &schema.Resource{
Create: resourceAwsLaunchConfigurationCreate,
Read: resourceAwsLaunchConfigurationRead,
Delete: resourceAwsLaunchConfigurationDelete,
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
"image_id": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"instance_type": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"iam_instance_profile": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true,
},
"key_name": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
"user_data": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true,
StateFunc: func(v interface{}) string {
switch v.(type) {
case string:
hash := sha1.Sum([]byte(v.(string)))
return hex.EncodeToString(hash[:])
default:
return ""
}
},
},
"security_groups": &schema.Schema{
Type: schema.TypeSet,
Optional: true,
ForceNew: true,
Elem: &schema.Schema{Type: schema.TypeString},
Set: schema.HashString,
},
"associate_public_ip_address": &schema.Schema{
Type: schema.TypeBool,
Optional: true,
ForceNew: true,
Default: false,
},
"spot_price": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true,
},
"ebs_optimized": &schema.Schema{
Type: schema.TypeBool,
Optional: true,
ForceNew: true,
Computed: true,
},
"placement_tenancy": &schema.Schema{
Type: schema.TypeString,
Optional: true,
ForceNew: true,
},
"ebs_block_device": &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Computed: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"delete_on_termination": &schema.Schema{
Type: schema.TypeBool,
Optional: true,
Default: true,
ForceNew: true,
},
"device_name": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"iops": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Computed: true,
ForceNew: true,
},
"snapshot_id": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
"volume_size": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Computed: true,
ForceNew: true,
},
"volume_type": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
},
},
Set: func(v interface{}) int {
var buf bytes.Buffer
m := v.(map[string]interface{})
buf.WriteString(fmt.Sprintf("%s-", m["device_name"].(string)))
buf.WriteString(fmt.Sprintf("%s-", m["snapshot_id"].(string)))
return hashcode.String(buf.String())
},
},
"ephemeral_block_device": &schema.Schema{
Type: schema.TypeSet,
Optional: true,
ForceNew: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"device_name": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"virtual_name": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
},
},
Set: func(v interface{}) int {
var buf bytes.Buffer
m := v.(map[string]interface{})
buf.WriteString(fmt.Sprintf("%s-", m["device_name"].(string)))
buf.WriteString(fmt.Sprintf("%s-", m["virtual_name"].(string)))
return hashcode.String(buf.String())
},
},
"root_block_device": &schema.Schema{
// TODO: This is a set because we don't support singleton
// sub-resources today. We'll enforce that the set only ever has
// length zero or one below. When TF gains support for
// sub-resources this can be converted.
Type: schema.TypeSet,
Optional: true,
Computed: true,
Elem: &schema.Resource{
// "You can only modify the volume size, volume type, and Delete on
// Termination flag on the block device mapping entry for the root
// device volume." - bit.ly/ec2bdmap
Schema: map[string]*schema.Schema{
"delete_on_termination": &schema.Schema{
Type: schema.TypeBool,
Optional: true,
Default: true,
ForceNew: true,
},
"iops": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Computed: true,
ForceNew: true,
},
"volume_size": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Computed: true,
ForceNew: true,
},
"volume_type": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
},
},
Set: func(v interface{}) int {
// there can be only one root device; no need to hash anything
return 0
},
},
},
}
}
func resourceAwsLaunchConfigurationCreate(d *schema.ResourceData, meta interface{}) error {
autoscalingconn := meta.(*AWSClient).autoscalingconn
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ec2conn := meta.(*AWSClient).ec2conn
createLaunchConfigurationOpts := autoscaling.CreateLaunchConfigurationInput{
LaunchConfigurationName: aws.String(d.Get("name").(string)),
ImageID: aws.String(d.Get("image_id").(string)),
InstanceType: aws.String(d.Get("instance_type").(string)),
EBSOptimized: aws.Boolean(d.Get("ebs_optimized").(bool)),
}
if v, ok := d.GetOk("user_data"); ok {
userData := base64.StdEncoding.EncodeToString([]byte(v.(string)))
createLaunchConfigurationOpts.UserData = aws.String(userData)
}
if v, ok := d.GetOk("iam_instance_profile"); ok {
createLaunchConfigurationOpts.IAMInstanceProfile = aws.String(v.(string))
}
if v, ok := d.GetOk("placement_tenancy"); ok {
createLaunchConfigurationOpts.PlacementTenancy = aws.String(v.(string))
}
if v, ok := d.GetOk("associate_public_ip_address"); ok {
createLaunchConfigurationOpts.AssociatePublicIPAddress = aws.Boolean(v.(bool))
}
if v, ok := d.GetOk("key_name"); ok {
createLaunchConfigurationOpts.KeyName = aws.String(v.(string))
}
if v, ok := d.GetOk("spot_price"); ok {
createLaunchConfigurationOpts.SpotPrice = aws.String(v.(string))
}
if v, ok := d.GetOk("security_groups"); ok {
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createLaunchConfigurationOpts.SecurityGroups = expandStringList(
v.(*schema.Set).List(),
)
}
var blockDevices []*autoscaling.BlockDeviceMapping
if v, ok := d.GetOk("ebs_block_device"); ok {
vL := v.(*schema.Set).List()
for _, v := range vL {
bd := v.(map[string]interface{})
ebs := &autoscaling.EBS{
DeleteOnTermination: aws.Boolean(bd["delete_on_termination"].(bool)),
}
if v, ok := bd["snapshot_id"].(string); ok && v != "" {
ebs.SnapshotID = aws.String(v)
}
if v, ok := bd["volume_size"].(int); ok && v != 0 {
ebs.VolumeSize = aws.Long(int64(v))
}
if v, ok := bd["volume_type"].(string); ok && v != "" {
ebs.VolumeType = aws.String(v)
}
if v, ok := bd["iops"].(int); ok && v > 0 {
ebs.IOPS = aws.Long(int64(v))
}
blockDevices = append(blockDevices, &autoscaling.BlockDeviceMapping{
DeviceName: aws.String(bd["device_name"].(string)),
EBS: ebs,
})
}
}
if v, ok := d.GetOk("ephemeral_block_device"); ok {
vL := v.(*schema.Set).List()
for _, v := range vL {
bd := v.(map[string]interface{})
blockDevices = append(blockDevices, &autoscaling.BlockDeviceMapping{
DeviceName: aws.String(bd["device_name"].(string)),
VirtualName: aws.String(bd["virtual_name"].(string)),
})
}
}
if v, ok := d.GetOk("root_block_device"); ok {
vL := v.(*schema.Set).List()
if len(vL) > 1 {
return fmt.Errorf("Cannot specify more than one root_block_device.")
}
for _, v := range vL {
bd := v.(map[string]interface{})
ebs := &autoscaling.EBS{
DeleteOnTermination: aws.Boolean(bd["delete_on_termination"].(bool)),
}
if v, ok := bd["volume_size"].(int); ok && v != 0 {
ebs.VolumeSize = aws.Long(int64(v))
}
if v, ok := bd["volume_type"].(string); ok && v != "" {
ebs.VolumeType = aws.String(v)
}
if v, ok := bd["iops"].(int); ok && v > 0 {
ebs.IOPS = aws.Long(int64(v))
}
if dn, err := fetchRootDeviceName(d.Get("image_id").(string), ec2conn); err == nil {
blockDevices = append(blockDevices, &autoscaling.BlockDeviceMapping{
DeviceName: dn,
EBS: ebs,
})
} else {
return err
}
}
}
if len(blockDevices) > 0 {
createLaunchConfigurationOpts.BlockDeviceMappings = blockDevices
}
var lcName string
if v, ok := d.GetOk("name"); ok {
lcName = v.(string)
} else {
lcName = resource.UniqueId()
}
createLaunchConfigurationOpts.LaunchConfigurationName = aws.String(lcName)
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log.Printf(
"[DEBUG] autoscaling create launch configuration: %#v", createLaunchConfigurationOpts)
_, err := autoscalingconn.CreateLaunchConfiguration(&createLaunchConfigurationOpts)
if err != nil {
return fmt.Errorf("Error creating launch configuration: %s", err)
}
d.SetId(lcName)
log.Printf("[INFO] launch configuration ID: %s", d.Id())
// We put a Retry here since sometimes eventual consistency bites
// us and we need to retry a few times to get the LC to load properly
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return resource.Retry(30*time.Second, func() error {
return resourceAwsLaunchConfigurationRead(d, meta)
})
}
func resourceAwsLaunchConfigurationRead(d *schema.ResourceData, meta interface{}) error {
autoscalingconn := meta.(*AWSClient).autoscalingconn
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ec2conn := meta.(*AWSClient).ec2conn
describeOpts := autoscaling.DescribeLaunchConfigurationsInput{
LaunchConfigurationNames: []*string{aws.String(d.Id())},
}
log.Printf("[DEBUG] launch configuration describe configuration: %#v", describeOpts)
describConfs, err := autoscalingconn.DescribeLaunchConfigurations(&describeOpts)
if err != nil {
return fmt.Errorf("Error retrieving launch configuration: %s", err)
}
if len(describConfs.LaunchConfigurations) == 0 {
d.SetId("")
return nil
}
// Verify AWS returned our launch configuration
if *describConfs.LaunchConfigurations[0].LaunchConfigurationName != d.Id() {
return fmt.Errorf(
"Unable to find launch configuration: %#v",
describConfs.LaunchConfigurations)
}
lc := describConfs.LaunchConfigurations[0]
d.Set("key_name", lc.KeyName)
d.Set("image_id", lc.ImageID)
d.Set("instance_type", lc.InstanceType)
d.Set("name", lc.LaunchConfigurationName)
d.Set("iam_instance_profile", lc.IAMInstanceProfile)
d.Set("ebs_optimized", lc.EBSOptimized)
d.Set("spot_price", lc.SpotPrice)
d.Set("security_groups", lc.SecurityGroups)
if err := readLCBlockDevices(d, lc, ec2conn); err != nil {
return err
}
return nil
}
func resourceAwsLaunchConfigurationDelete(d *schema.ResourceData, meta interface{}) error {
autoscalingconn := meta.(*AWSClient).autoscalingconn
log.Printf("[DEBUG] Launch Configuration destroy: %v", d.Id())
_, err := autoscalingconn.DeleteLaunchConfiguration(
&autoscaling.DeleteLaunchConfigurationInput{
LaunchConfigurationName: aws.String(d.Id()),
})
if err != nil {
autoscalingerr, ok := err.(aws.APIError)
if ok && autoscalingerr.Code == "InvalidConfiguration.NotFound" {
return nil
}
return err
}
return nil
}
func readLCBlockDevices(d *schema.ResourceData, lc *autoscaling.LaunchConfiguration, ec2conn *ec2.EC2) error {
ibds, err := readBlockDevicesFromLaunchConfiguration(d, lc, ec2conn)
if err != nil {
return err
}
if err := d.Set("ebs_block_device", ibds["ebs"]); err != nil {
return err
}
if err := d.Set("ephemeral_block_device", ibds["ephemeral"]); err != nil {
return err
}
if ibds["root"] != nil {
if err := d.Set("root_block_device", []interface{}{ibds["root"]}); err != nil {
return err
}
} else {
d.Set("root_block_device", []interface{}{})
}
return nil
}
func readBlockDevicesFromLaunchConfiguration(d *schema.ResourceData, lc *autoscaling.LaunchConfiguration, ec2conn *ec2.EC2) (
map[string]interface{}, error) {
blockDevices := make(map[string]interface{})
blockDevices["ebs"] = make([]map[string]interface{}, 0)
blockDevices["ephemeral"] = make([]map[string]interface{}, 0)
blockDevices["root"] = nil
if len(lc.BlockDeviceMappings) == 0 {
return nil, nil
}
rootDeviceName, err := fetchRootDeviceName(d.Get("image_id").(string), ec2conn)
if err != nil {
return nil, err
}
if rootDeviceName == nil {
// We do this so the value is empty so we don't have to do nil checks later
var blank string
rootDeviceName = &blank
}
for _, bdm := range lc.BlockDeviceMappings {
bd := make(map[string]interface{})
if bdm.EBS != nil && bdm.EBS.DeleteOnTermination != nil {
bd["delete_on_termination"] = *bdm.EBS.DeleteOnTermination
}
if bdm.EBS != nil && bdm.EBS.VolumeSize != nil {
bd["volume_size"] = *bdm.EBS.VolumeSize
}
if bdm.EBS != nil && bdm.EBS.VolumeType != nil {
bd["volume_type"] = *bdm.EBS.VolumeType
}
if bdm.EBS != nil && bdm.EBS.IOPS != nil {
bd["iops"] = *bdm.EBS.IOPS
}
if bdm.DeviceName != nil && *bdm.DeviceName == *rootDeviceName {
blockDevices["root"] = bd
} else {
if bdm.DeviceName != nil {
bd["device_name"] = *bdm.DeviceName
}
if bdm.VirtualName != nil {
bd["virtual_name"] = *bdm.VirtualName
blockDevices["ephemeral"] = append(blockDevices["ephemeral"].([]map[string]interface{}), bd)
} else {
if bdm.EBS != nil && bdm.EBS.SnapshotID != nil {
bd["snapshot_id"] = *bdm.EBS.SnapshotID
}
blockDevices["ebs"] = append(blockDevices["ebs"].([]map[string]interface{}), bd)
}
}
}
return blockDevices, nil
}