terraform/builtin/providers/aws/resource_aws_autoscaling_gr...

332 lines
8.9 KiB
Go

package aws
import (
"fmt"
"log"
"time"
"github.com/hashicorp/terraform/helper/hashcode"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
"github.com/mitchellh/goamz/autoscaling"
)
func resourceAwsAutoscalingGroup() *schema.Resource {
return &schema.Resource{
Create: resourceAwsAutoscalingGroupCreate,
Read: resourceAwsAutoscalingGroupRead,
Update: resourceAwsAutoscalingGroupUpdate,
Delete: resourceAwsAutoscalingGroupDelete,
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"launch_configuration": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"desired_capacity": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Computed: true,
},
"min_size": &schema.Schema{
Type: schema.TypeInt,
Required: true,
},
"max_size": &schema.Schema{
Type: schema.TypeInt,
Required: true,
},
"default_cooldown": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Computed: true,
ForceNew: true,
},
"force_delete": &schema.Schema{
Type: schema.TypeBool,
Optional: true,
Computed: true,
ForceNew: true,
},
"health_check_grace_period": &schema.Schema{
Type: schema.TypeInt,
Optional: true,
Computed: true,
ForceNew: true,
},
"health_check_type": &schema.Schema{
Type: schema.TypeString,
Optional: true,
Computed: true,
ForceNew: true,
},
"availability_zones": &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))
},
},
"load_balancers": &schema.Schema{
Type: schema.TypeSet,
Optional: true,
ForceNew: true,
Elem: &schema.Schema{Type: schema.TypeString},
Set: func(v interface{}) int {
return hashcode.String(v.(string))
},
},
"vpc_zone_identifier": &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Computed: true,
ForceNew: true,
Elem: &schema.Schema{Type: schema.TypeString},
Set: func(v interface{}) int {
return hashcode.String(v.(string))
},
},
},
}
}
func resourceAwsAutoscalingGroupCreate(d *schema.ResourceData, meta interface{}) error {
autoscalingconn := meta.(*AWSClient).autoscalingconn
var autoScalingGroupOpts autoscaling.CreateAutoScalingGroup
autoScalingGroupOpts.Name = d.Get("name").(string)
autoScalingGroupOpts.HealthCheckType = d.Get("health_check_type").(string)
autoScalingGroupOpts.LaunchConfigurationName = d.Get("launch_configuration").(string)
autoScalingGroupOpts.MinSize = d.Get("min_size").(int)
autoScalingGroupOpts.MaxSize = d.Get("max_size").(int)
autoScalingGroupOpts.SetMinSize = true
autoScalingGroupOpts.SetMaxSize = true
autoScalingGroupOpts.AvailZone = expandStringList(
d.Get("availability_zones").(*schema.Set).List())
if v, ok := d.GetOk("default_cooldown"); ok {
autoScalingGroupOpts.DefaultCooldown = v.(int)
autoScalingGroupOpts.SetDefaultCooldown = true
}
if v, ok := d.GetOk("desired_capacity"); ok {
autoScalingGroupOpts.DesiredCapacity = v.(int)
autoScalingGroupOpts.SetDesiredCapacity = true
}
if v, ok := d.GetOk("health_check_grace_period"); ok {
autoScalingGroupOpts.HealthCheckGracePeriod = v.(int)
autoScalingGroupOpts.SetHealthCheckGracePeriod = true
}
if v, ok := d.GetOk("load_balancers"); ok {
autoScalingGroupOpts.LoadBalancerNames = expandStringList(
v.(*schema.Set).List())
}
if v, ok := d.GetOk("vpc_zone_identifier"); ok {
autoScalingGroupOpts.VPCZoneIdentifier = expandStringList(
v.(*schema.Set).List())
}
log.Printf("[DEBUG] AutoScaling Group create configuration: %#v", autoScalingGroupOpts)
_, err := autoscalingconn.CreateAutoScalingGroup(&autoScalingGroupOpts)
if err != nil {
return fmt.Errorf("Error creating Autoscaling Group: %s", err)
}
d.SetId(d.Get("name").(string))
log.Printf("[INFO] AutoScaling Group ID: %s", d.Id())
return resourceAwsAutoscalingGroupRead(d, meta)
}
func resourceAwsAutoscalingGroupRead(d *schema.ResourceData, meta interface{}) error {
g, err := getAwsAutoscalingGroup(d, meta)
if err != nil {
return err
}
if g == nil {
return nil
}
d.Set("availability_zones", g.AvailabilityZones)
d.Set("default_cooldown", g.DefaultCooldown)
d.Set("desired_capacity", g.DesiredCapacity)
d.Set("health_check_grace_period", g.HealthCheckGracePeriod)
d.Set("health_check_type", g.HealthCheckType)
d.Set("launch_configuration", g.LaunchConfigurationName)
d.Set("load_balancers", g.LoadBalancerNames)
d.Set("min_size", g.MinSize)
d.Set("max_size", g.MaxSize)
d.Set("name", g.Name)
d.Set("vpc_zone_identifier", g.VPCZoneIdentifier)
return nil
}
func resourceAwsAutoscalingGroupUpdate(d *schema.ResourceData, meta interface{}) error {
autoscalingconn := meta.(*AWSClient).autoscalingconn
opts := autoscaling.UpdateAutoScalingGroup{
Name: d.Id(),
}
if d.HasChange("desired_capacity") {
opts.DesiredCapacity = d.Get("desired_capacity").(int)
opts.SetDesiredCapacity = true
}
if d.HasChange("min_size") {
opts.MinSize = d.Get("min_size").(int)
opts.SetMinSize = true
}
if d.HasChange("max_size") {
opts.MaxSize = d.Get("max_size").(int)
opts.SetMaxSize = true
}
log.Printf("[DEBUG] AutoScaling Group update configuration: %#v", opts)
_, err := autoscalingconn.UpdateAutoScalingGroup(&opts)
if err != nil {
d.Partial(true)
return fmt.Errorf("Error updating Autoscaling group: %s", err)
}
return resourceAwsAutoscalingGroupRead(d, meta)
}
func resourceAwsAutoscalingGroupDelete(d *schema.ResourceData, meta interface{}) error {
autoscalingconn := meta.(*AWSClient).autoscalingconn
// Read the autoscaling group first. If it doesn't exist, we're done.
// We need the group in order to check if there are instances attached.
// If so, we need to remove those first.
g, err := getAwsAutoscalingGroup(d, meta)
if err != nil {
return err
}
if g == nil {
return nil
}
if len(g.Instances) > 0 || g.DesiredCapacity > 0 {
if err := resourceAwsAutoscalingGroupDrain(d, meta); err != nil {
return err
}
}
log.Printf("[DEBUG] AutoScaling Group destroy: %v", d.Id())
deleteopts := autoscaling.DeleteAutoScalingGroup{Name: d.Id()}
// You can force an autoscaling group to delete
// even if it's in the process of scaling a resource.
// Normally, you would set the min-size and max-size to 0,0
// and then delete the group. This bypasses that and leaves
// resources potentially dangling.
if d.Get("force_delete").(bool) {
deleteopts.ForceDelete = true
}
if _, err := autoscalingconn.DeleteAutoScalingGroup(&deleteopts); err != nil {
autoscalingerr, ok := err.(*autoscaling.Error)
if ok && autoscalingerr.Code == "InvalidGroup.NotFound" {
return nil
}
return err
}
return nil
}
func getAwsAutoscalingGroup(
d *schema.ResourceData,
meta interface{}) (*autoscaling.AutoScalingGroup, error) {
autoscalingconn := meta.(*AWSClient).autoscalingconn
describeOpts := autoscaling.DescribeAutoScalingGroups{
Names: []string{d.Id()},
}
log.Printf("[DEBUG] AutoScaling Group describe configuration: %#v", describeOpts)
describeGroups, err := autoscalingconn.DescribeAutoScalingGroups(&describeOpts)
if err != nil {
autoscalingerr, ok := err.(*autoscaling.Error)
if ok && autoscalingerr.Code == "InvalidGroup.NotFound" {
d.SetId("")
return nil, nil
}
return nil, fmt.Errorf("Error retrieving AutoScaling groups: %s", err)
}
// Verify AWS returned our sg
if len(describeGroups.AutoScalingGroups) != 1 ||
describeGroups.AutoScalingGroups[0].Name != d.Id() {
if err != nil {
return nil, fmt.Errorf(
"Unable to find AutoScaling group: %#v",
describeGroups.AutoScalingGroups)
}
}
return &describeGroups.AutoScalingGroups[0], nil
}
func resourceAwsAutoscalingGroupDrain(d *schema.ResourceData, meta interface{}) error {
autoscalingconn := meta.(*AWSClient).autoscalingconn
// First, set the capacity to zero so the group will drain
log.Printf("[DEBUG] Reducing autoscaling group capacity to zero")
opts := autoscaling.UpdateAutoScalingGroup{
Name: d.Id(),
DesiredCapacity: 0,
MinSize: 0,
MaxSize: 0,
SetDesiredCapacity: true,
SetMinSize: true,
SetMaxSize: true,
}
if _, err := autoscalingconn.UpdateAutoScalingGroup(&opts); err != nil {
return fmt.Errorf("Error setting capacity to zero to drain: %s", err)
}
// Next, wait for the autoscale group to drain
log.Printf("[DEBUG] Waiting for group to have zero instances")
return resource.Retry(10*time.Minute, func() error {
g, err := getAwsAutoscalingGroup(d, meta)
if err != nil {
return resource.RetryError{err}
}
if g == nil {
return nil
}
if len(g.Instances) == 0 {
return nil
}
return fmt.Errorf("group still has %d instances", len(g.Instances))
})
}