func getAwsAutoscalingGroup(
asgName string,
conn *autoscaling.AutoScaling) (*autoscaling.Group, error) {
describeOpts := autoscaling.DescribeAutoScalingGroupsInput{
AutoScalingGroupNames: []*string{aws.String(asgName)},
}
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" {
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 == asgName {
return describeGroups.AutoScalingGroups[idx], nil
}
}
return nil, nil
}
// setTags is a helper to set the tags for a resource. It expects the
// tags field to be named "tag"
func setAutoscalingTags(conn *autoscaling.AutoScaling, d *schema.ResourceData) error {
if d.HasChange("tag") {
oraw, nraw := d.GetChange("tag")
o := setToMapByKey(oraw.(*schema.Set), "key")
n := setToMapByKey(nraw.(*schema.Set), "key")
resourceID := d.Get("name").(string)
c, r := diffAutoscalingTags(
autoscalingTagsFromMap(o, resourceID),
autoscalingTagsFromMap(n, resourceID),
resourceID)
create := autoscaling.CreateOrUpdateTagsInput{
Tags: c,
}
remove := autoscaling.DeleteTagsInput{
Tags: r,
}
// Set tags
if len(r) > 0 {
log.Printf("[DEBUG] Removing autoscaling tags: %#v", r)
if _, err := conn.DeleteTags(&remove); err != nil {
return err
}
}
if len(c) > 0 {
log.Printf("[DEBUG] Creating autoscaling tags: %#v", c)
if _, err := conn.CreateOrUpdateTags(&create); err != nil {
return err
}
}
}
return nil
}
func enableASGSuspendedProcesses(d *schema.ResourceData, conn *autoscaling.AutoScaling) error {
props := &autoscaling.ScalingProcessQuery{
AutoScalingGroupName: aws.String(d.Id()),
ScalingProcesses: expandStringList(d.Get("suspended_processes").(*schema.Set).List()),
}
_, err := conn.SuspendProcesses(props)
if err != nil {
return err
}
return nil
}
func removeNotificationConfigToGroupsWithTopic(conn *autoscaling.AutoScaling, groups []*string, topic string) error {
for _, r := range groups {
opts := &autoscaling.DeleteNotificationConfigurationInput{
AutoScalingGroupName: r,
TopicARN: aws.String(topic),
}
_, err := conn.DeleteNotificationConfiguration(opts)
if err != nil {
return fmt.Errorf("[WARN] Error deleting notification configuration for ASG \"%s\", Topic ARN \"%s\"", *r, topic)
}
}
return nil
}
func enableASGMetricsCollection(d *schema.ResourceData, conn *autoscaling.AutoScaling) error {
props := &autoscaling.EnableMetricsCollectionInput{
AutoScalingGroupName: aws.String(d.Id()),
Granularity: aws.String(d.Get("metrics_granularity").(string)),
Metrics: expandStringList(d.Get("enabled_metrics").(*schema.Set).List()),
}
log.Printf("[INFO] Enabling metrics collection for the ASG: %s", d.Id())
_, metricsErr := conn.EnableMetricsCollection(props)
if metricsErr != nil {
return metricsErr
}
return nil
}
func resourceAwsAutoscalingLifecycleHookPutOp(conn *autoscaling.AutoScaling, params *autoscaling.PutLifecycleHookInput) error {
log.Printf("[DEBUG] AutoScaling PutLifecyleHook: %s", params)
return resource.Retry(5*time.Minute, func() *resource.RetryError {
_, err := conn.PutLifecycleHook(params)
if err != nil {
if awsErr, ok := err.(awserr.Error); ok {
if strings.Contains(awsErr.Message(), "Unable to publish test message to notification target") {
return resource.RetryableError(fmt.Errorf("[DEBUG] Retrying AWS AutoScaling Lifecycle Hook: %s", params))
}
}
return resource.NonRetryableError(fmt.Errorf("Error putting lifecycle hook: %s", err))
}
return nil
})
}
func terminateASG(api *autoscaling.AutoScaling, instance *autoscaling.Group, wg *sync.WaitGroup) error {
defer wg.Done()
// 1. set the number of instances to 0
_, err := api.UpdateAutoScalingGroup(&autoscaling.UpdateAutoScalingGroupInput{
AutoScalingGroupName: instance.AutoScalingGroupName,
DesiredCapacity: aws.Int64(0),
MaxSize: aws.Int64(0),
MinSize: aws.Int64(0),
})
if err != nil {
return err
}
// 2. wait until the instance count is 0
for {
instances, err := api.DescribeAutoScalingGroups(&autoscaling.DescribeAutoScalingGroupsInput{
AutoScalingGroupNames: []*string{instance.AutoScalingGroupName},
})
if err != nil {
return err
}
// instance already deleted? we're done
if len(instances.AutoScalingGroups) == 0 {
return nil
}
// no instances remaining in asg? break
if v := instances.AutoScalingGroups[0]; len(v.Instances) == 0 {
break
}
time.Sleep(15 * time.Second)
}
// 3. terminate the asg
log.Printf("deleting autoscaling group, %s\n", *instance.AutoScalingGroupName)
_, err = api.DeleteAutoScalingGroup(&autoscaling.DeleteAutoScalingGroupInput{
AutoScalingGroupName: instance.AutoScalingGroupName,
ForceDelete: aws.Bool(true),
})
if err != nil {
return err
}
log.Printf("deleting launch configuration, %s\n", *instance.LaunchConfigurationName)
_, err = api.DeleteLaunchConfiguration(&autoscaling.DeleteLaunchConfigurationInput{
LaunchConfigurationName: instance.LaunchConfigurationName,
})
if err != nil {
return err
}
return nil
}
func addNotificationConfigToGroupsWithTopic(conn *autoscaling.AutoScaling, groups []*string, nl []*string, topic string) error {
for _, a := range groups {
opts := &autoscaling.PutNotificationConfigurationInput{
AutoScalingGroupName: a,
NotificationTypes: nl,
TopicARN: aws.String(topic),
}
_, err := conn.PutNotificationConfiguration(opts)
if err != nil {
if awsErr, ok := err.(awserr.Error); ok {
return fmt.Errorf("[WARN] Error creating Autoscaling Group Notification for Group %s, error: \"%s\", code: \"%s\"", *a, awsErr.Message(), awsErr.Code())
}
return err
}
}
return nil
}
func updateASGMetricsCollection(d *schema.ResourceData, conn *autoscaling.AutoScaling) error {
o, n := d.GetChange("enabled_metrics")
if o == nil {
o = new(schema.Set)
}
if n == nil {
n = new(schema.Set)
}
os := o.(*schema.Set)
ns := n.(*schema.Set)
disableMetrics := os.Difference(ns)
if disableMetrics.Len() != 0 {
props := &autoscaling.DisableMetricsCollectionInput{
AutoScalingGroupName: aws.String(d.Id()),
Metrics: expandStringList(disableMetrics.List()),
}
_, err := conn.DisableMetricsCollection(props)
if err != nil {
return fmt.Errorf("Failure to Disable metrics collection types for ASG %s: %s", d.Id(), err)
}
}
enabledMetrics := ns.Difference(os)
if enabledMetrics.Len() != 0 {
props := &autoscaling.EnableMetricsCollectionInput{
AutoScalingGroupName: aws.String(d.Id()),
Metrics: expandStringList(enabledMetrics.List()),
Granularity: aws.String(d.Get("metrics_granularity").(string)),
}
_, err := conn.EnableMetricsCollection(props)
if err != nil {
return fmt.Errorf("Failure to Enable metrics collection types for ASG %s: %s", d.Id(), err)
}
}
return nil
}
func updateASGSuspendedProcesses(d *schema.ResourceData, conn *autoscaling.AutoScaling) error {
o, n := d.GetChange("suspended_processes")
if o == nil {
o = new(schema.Set)
}
if n == nil {
n = new(schema.Set)
}
os := o.(*schema.Set)
ns := n.(*schema.Set)
resumeProcesses := os.Difference(ns)
if resumeProcesses.Len() != 0 {
props := &autoscaling.ScalingProcessQuery{
AutoScalingGroupName: aws.String(d.Id()),
ScalingProcesses: expandStringList(resumeProcesses.List()),
}
_, err := conn.ResumeProcesses(props)
if err != nil {
return fmt.Errorf("Error Resuming Processes for ASG %q: %s", d.Id(), err)
}
}
suspendedProcesses := ns.Difference(os)
if suspendedProcesses.Len() != 0 {
props := &autoscaling.ScalingProcessQuery{
AutoScalingGroupName: aws.String(d.Id()),
ScalingProcesses: expandStringList(suspendedProcesses.List()),
}
_, err := conn.SuspendProcesses(props)
if err != nil {
return fmt.Errorf("Error Suspending Processes for ASG %q: %s", d.Id(), err)
}
}
return nil
}
func findASGInstancesToTerminate(api *autoscaling.AutoScaling, opts Options) ([]*autoscaling.Group, error) {
groups, err := api.DescribeAutoScalingGroups(&autoscaling.DescribeAutoScalingGroupsInput{})
if err != nil {
return nil, err
}
instances := []*autoscaling.Group{}
for _, asg := range groups.AutoScalingGroups {
if !hasASGTags(asg, "app", opts.App) {
continue
}
if !hasASGTags(asg, "env", opts.Env) {
continue
}
if hasASGTags(asg, "version", opts.Exclude) {
continue
}
instances = append(instances, asg)
}
return instances, nil
}