494 lines
14 KiB
Go
494 lines
14 KiB
Go
package aws
|
|
|
|
import (
|
|
"fmt"
|
|
"log"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/hashicorp/terraform/helper/resource"
|
|
"github.com/hashicorp/terraform/helper/schema"
|
|
|
|
"github.com/awslabs/aws-sdk-go/aws"
|
|
"github.com/awslabs/aws-sdk-go/aws/awserr"
|
|
"github.com/awslabs/aws-sdk-go/service/autoscaling"
|
|
"github.com/awslabs/aws-sdk-go/service/elb"
|
|
)
|
|
|
|
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,
|
|
},
|
|
|
|
"desired_capacity": &schema.Schema{
|
|
Type: schema.TypeInt,
|
|
Optional: true,
|
|
Computed: true,
|
|
},
|
|
|
|
"min_elb_capacity": &schema.Schema{
|
|
Type: schema.TypeInt,
|
|
Optional: 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,
|
|
},
|
|
|
|
"health_check_type": &schema.Schema{
|
|
Type: schema.TypeString,
|
|
Optional: true,
|
|
Computed: true,
|
|
},
|
|
|
|
"availability_zones": &schema.Schema{
|
|
Type: schema.TypeSet,
|
|
Required: true,
|
|
ForceNew: true,
|
|
Elem: &schema.Schema{Type: schema.TypeString},
|
|
Set: schema.HashString,
|
|
},
|
|
|
|
"load_balancers": &schema.Schema{
|
|
Type: schema.TypeSet,
|
|
Optional: true,
|
|
ForceNew: true,
|
|
Elem: &schema.Schema{Type: schema.TypeString},
|
|
Set: schema.HashString,
|
|
},
|
|
|
|
"vpc_zone_identifier": &schema.Schema{
|
|
Type: schema.TypeSet,
|
|
Optional: true,
|
|
Computed: true,
|
|
ForceNew: true,
|
|
Elem: &schema.Schema{Type: schema.TypeString},
|
|
Set: schema.HashString,
|
|
},
|
|
|
|
"termination_policies": &schema.Schema{
|
|
Type: schema.TypeSet,
|
|
Optional: true,
|
|
Computed: true,
|
|
ForceNew: true,
|
|
Elem: &schema.Schema{Type: schema.TypeString},
|
|
Set: schema.HashString,
|
|
},
|
|
|
|
"tag": autoscalingTagsSchema(),
|
|
},
|
|
}
|
|
}
|
|
|
|
func resourceAwsAutoscalingGroupCreate(d *schema.ResourceData, meta interface{}) error {
|
|
conn := meta.(*AWSClient).autoscalingconn
|
|
|
|
var autoScalingGroupOpts autoscaling.CreateAutoScalingGroupInput
|
|
autoScalingGroupOpts.AutoScalingGroupName = aws.String(d.Get("name").(string))
|
|
autoScalingGroupOpts.LaunchConfigurationName = aws.String(d.Get("launch_configuration").(string))
|
|
autoScalingGroupOpts.MinSize = aws.Long(int64(d.Get("min_size").(int)))
|
|
autoScalingGroupOpts.MaxSize = aws.Long(int64(d.Get("max_size").(int)))
|
|
autoScalingGroupOpts.AvailabilityZones = expandStringList(
|
|
d.Get("availability_zones").(*schema.Set).List())
|
|
|
|
if v, ok := d.GetOk("tag"); ok {
|
|
autoScalingGroupOpts.Tags = autoscalingTagsFromMap(
|
|
setToMapByKey(v.(*schema.Set), "key"), d.Get("name").(string))
|
|
}
|
|
|
|
if v, ok := d.GetOk("default_cooldown"); ok {
|
|
autoScalingGroupOpts.DefaultCooldown = aws.Long(int64(v.(int)))
|
|
}
|
|
|
|
if v, ok := d.GetOk("health_check_type"); ok && v.(string) != "" {
|
|
autoScalingGroupOpts.HealthCheckType = aws.String(v.(string))
|
|
}
|
|
|
|
if v, ok := d.GetOk("desired_capacity"); ok {
|
|
autoScalingGroupOpts.DesiredCapacity = aws.Long(int64(v.(int)))
|
|
}
|
|
|
|
if v, ok := d.GetOk("health_check_grace_period"); ok {
|
|
autoScalingGroupOpts.HealthCheckGracePeriod = aws.Long(int64(v.(int)))
|
|
}
|
|
|
|
if v, ok := d.GetOk("load_balancers"); ok && v.(*schema.Set).Len() > 0 {
|
|
autoScalingGroupOpts.LoadBalancerNames = expandStringList(
|
|
v.(*schema.Set).List())
|
|
}
|
|
|
|
if v, ok := d.GetOk("vpc_zone_identifier"); ok && v.(*schema.Set).Len() > 0 {
|
|
exp := expandStringList(v.(*schema.Set).List())
|
|
strs := make([]string, len(exp))
|
|
for _, s := range exp {
|
|
strs = append(strs, *s)
|
|
}
|
|
autoScalingGroupOpts.VPCZoneIdentifier = aws.String(strings.Join(strs, ","))
|
|
}
|
|
|
|
if v, ok := d.GetOk("termination_policies"); ok && v.(*schema.Set).Len() > 0 {
|
|
autoScalingGroupOpts.TerminationPolicies = expandStringList(
|
|
v.(*schema.Set).List())
|
|
}
|
|
|
|
log.Printf("[DEBUG] AutoScaling Group create configuration: %#v", autoScalingGroupOpts)
|
|
_, err := conn.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())
|
|
|
|
if err := waitForASGCapacity(d, meta); err != nil {
|
|
return err
|
|
}
|
|
|
|
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.AutoScalingGroupName)
|
|
d.Set("tag", g.Tags)
|
|
d.Set("vpc_zone_identifier", strings.Split(*g.VPCZoneIdentifier, ","))
|
|
d.Set("termination_policies", g.TerminationPolicies)
|
|
|
|
return nil
|
|
}
|
|
|
|
func resourceAwsAutoscalingGroupUpdate(d *schema.ResourceData, meta interface{}) error {
|
|
conn := meta.(*AWSClient).autoscalingconn
|
|
|
|
opts := autoscaling.UpdateAutoScalingGroupInput{
|
|
AutoScalingGroupName: aws.String(d.Id()),
|
|
}
|
|
|
|
if d.HasChange("desired_capacity") {
|
|
opts.DesiredCapacity = aws.Long(int64(d.Get("desired_capacity").(int)))
|
|
}
|
|
|
|
if d.HasChange("launch_configuration") {
|
|
opts.LaunchConfigurationName = aws.String(d.Get("launch_configuration").(string))
|
|
}
|
|
|
|
if d.HasChange("min_size") {
|
|
opts.MinSize = aws.Long(int64(d.Get("min_size").(int)))
|
|
}
|
|
|
|
if d.HasChange("max_size") {
|
|
opts.MaxSize = aws.Long(int64(d.Get("max_size").(int)))
|
|
}
|
|
|
|
if d.HasChange("health_check_grace_period") {
|
|
opts.HealthCheckGracePeriod = aws.Long(int64(d.Get("health_check_grace_period").(int)))
|
|
}
|
|
|
|
if d.HasChange("health_check_type") {
|
|
opts.HealthCheckGracePeriod = aws.Long(int64(d.Get("health_check_grace_period").(int)))
|
|
opts.HealthCheckType = aws.String(d.Get("health_check_type").(string))
|
|
}
|
|
|
|
if err := setAutoscalingTags(conn, d); err != nil {
|
|
return err
|
|
} else {
|
|
d.SetPartial("tag")
|
|
}
|
|
|
|
log.Printf("[DEBUG] AutoScaling Group update configuration: %#v", opts)
|
|
_, err := conn.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 {
|
|
conn := 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.DeleteAutoScalingGroupInput{AutoScalingGroupName: aws.String(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 = aws.Boolean(true)
|
|
}
|
|
|
|
// We retry the delete operation to handle InUse/InProgress errors coming
|
|
// from scaling operations. We should be able to sneak in a delete in between
|
|
// scaling operations within 5m.
|
|
err = resource.Retry(5*time.Minute, func() error {
|
|
if _, err := conn.DeleteAutoScalingGroup(&deleteopts); err != nil {
|
|
if awserr, ok := err.(awserr.Error); ok {
|
|
switch awserr.Code() {
|
|
case "InvalidGroup.NotFound":
|
|
// Already gone? Sure!
|
|
return nil
|
|
case "ResourceInUse", "ScalingActivityInProgress":
|
|
// These are retryable
|
|
return awserr
|
|
}
|
|
}
|
|
// Didn't recognize the error, so shouldn't retry.
|
|
return resource.RetryError{Err: err}
|
|
}
|
|
// Successful delete
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return resource.Retry(5*time.Minute, func() error {
|
|
if g, _ = getAwsAutoscalingGroup(d, meta); g != nil {
|
|
return fmt.Errorf("Auto Scaling Group still exists")
|
|
}
|
|
return nil
|
|
})
|
|
}
|
|
|
|
func getAwsAutoscalingGroup(
|
|
d *schema.ResourceData,
|
|
meta interface{}) (*autoscaling.Group, error) {
|
|
conn := meta.(*AWSClient).autoscalingconn
|
|
|
|
describeOpts := autoscaling.DescribeAutoScalingGroupsInput{
|
|
AutoScalingGroupNames: []*string{aws.String(d.Id())},
|
|
}
|
|
|
|
log.Printf("[DEBUG] AutoScaling Group describe configuration: %#v", describeOpts)
|
|
describeGroups, err := conn.DescribeAutoScalingGroups(&describeOpts)
|
|
if err != nil {
|
|
autoscalingerr, ok := err.(awserr.Error)
|
|
if ok && autoscalingerr.Code() == "InvalidGroup.NotFound" {
|
|
d.SetId("")
|
|
return nil, nil
|
|
}
|
|
|
|
return nil, fmt.Errorf("Error retrieving AutoScaling groups: %s", err)
|
|
}
|
|
|
|
// Search for the autoscaling group
|
|
for idx, asc := range describeGroups.AutoScalingGroups {
|
|
if *asc.AutoScalingGroupName == d.Id() {
|
|
return describeGroups.AutoScalingGroups[idx], nil
|
|
}
|
|
}
|
|
|
|
// ASG not found
|
|
d.SetId("")
|
|
return nil, nil
|
|
}
|
|
|
|
func resourceAwsAutoscalingGroupDrain(d *schema.ResourceData, meta interface{}) error {
|
|
conn := 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.UpdateAutoScalingGroupInput{
|
|
AutoScalingGroupName: aws.String(d.Id()),
|
|
DesiredCapacity: aws.Long(0),
|
|
MinSize: aws.Long(0),
|
|
MaxSize: aws.Long(0),
|
|
}
|
|
if _, err := conn.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: err}
|
|
}
|
|
if g == nil {
|
|
return nil
|
|
}
|
|
|
|
if len(g.Instances) == 0 {
|
|
return nil
|
|
}
|
|
|
|
return fmt.Errorf("group still has %d instances", len(g.Instances))
|
|
})
|
|
}
|
|
|
|
var waitForASGCapacityTimeout = 10 * time.Minute
|
|
|
|
// Waits for a minimum number of healthy instances to show up as healthy in the
|
|
// ASG before continuing. Waits up to `waitForASGCapacityTimeout` for
|
|
// "desired_capacity", or "min_size" if desired capacity is not specified.
|
|
//
|
|
// If "min_elb_capacity" is specified, will also wait for that number of
|
|
// instances to show up InService in all attached ELBs. See "Waiting for
|
|
// Capacity" in docs for more discussion of the feature.
|
|
func waitForASGCapacity(d *schema.ResourceData, meta interface{}) error {
|
|
wantASG := d.Get("min_size").(int)
|
|
if v := d.Get("desired_capacity").(int); v > 0 {
|
|
wantASG = v
|
|
}
|
|
wantELB := d.Get("min_elb_capacity").(int)
|
|
|
|
log.Printf("[DEBUG] Wanting for capacity: %d ASG, %d ELB", wantASG, wantELB)
|
|
|
|
return resource.Retry(waitForASGCapacityTimeout, func() error {
|
|
g, err := getAwsAutoscalingGroup(d, meta)
|
|
if err != nil {
|
|
return resource.RetryError{Err: err}
|
|
}
|
|
if g == nil {
|
|
return nil
|
|
}
|
|
lbis, err := getLBInstanceStates(g, meta)
|
|
if err != nil {
|
|
return resource.RetryError{Err: err}
|
|
}
|
|
|
|
haveASG := 0
|
|
haveELB := 0
|
|
|
|
for _, i := range g.Instances {
|
|
if i.HealthStatus == nil || i.InstanceID == nil || i.LifecycleState == nil {
|
|
continue
|
|
}
|
|
|
|
if !strings.EqualFold(*i.HealthStatus, "Healthy") {
|
|
continue
|
|
}
|
|
|
|
if !strings.EqualFold(*i.LifecycleState, "InService") {
|
|
continue
|
|
}
|
|
|
|
haveASG++
|
|
|
|
if wantELB > 0 {
|
|
inAllLbs := true
|
|
for _, states := range lbis {
|
|
state, ok := states[*i.InstanceID]
|
|
if !ok || !strings.EqualFold(state, "InService") {
|
|
inAllLbs = false
|
|
}
|
|
}
|
|
if inAllLbs {
|
|
haveELB++
|
|
}
|
|
}
|
|
}
|
|
|
|
log.Printf("[DEBUG] %q Capacity: %d/%d ASG, %d/%d ELB",
|
|
d.Id(), haveASG, wantASG, haveELB, wantELB)
|
|
|
|
if haveASG >= wantASG && haveELB >= wantELB {
|
|
return nil
|
|
}
|
|
|
|
return fmt.Errorf("Still need to wait for more healthy instances.")
|
|
})
|
|
}
|
|
|
|
// Returns a mapping of the instance states of all the ELBs attached to the
|
|
// provided ASG.
|
|
//
|
|
// Nested like: lbName -> instanceId -> instanceState
|
|
func getLBInstanceStates(g *autoscaling.Group, meta interface{}) (map[string]map[string]string, error) {
|
|
lbInstanceStates := make(map[string]map[string]string)
|
|
elbconn := meta.(*AWSClient).elbconn
|
|
|
|
for _, lbName := range g.LoadBalancerNames {
|
|
lbInstanceStates[*lbName] = make(map[string]string)
|
|
opts := &elb.DescribeInstanceHealthInput{LoadBalancerName: lbName}
|
|
r, err := elbconn.DescribeInstanceHealth(opts)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
for _, is := range r.InstanceStates {
|
|
if is.InstanceID == nil || is.State == nil {
|
|
continue
|
|
}
|
|
lbInstanceStates[*lbName][*is.InstanceID] = *is.State
|
|
}
|
|
}
|
|
|
|
return lbInstanceStates, nil
|
|
}
|