142 lines
3.6 KiB
Go
142 lines
3.6 KiB
Go
package aws
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import (
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"fmt"
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"log"
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"github.com/aws/aws-sdk-go/aws"
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"github.com/aws/aws-sdk-go/aws/awserr"
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"github.com/aws/aws-sdk-go/service/elbv2"
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"github.com/hashicorp/errwrap"
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"github.com/hashicorp/terraform/helper/resource"
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"github.com/hashicorp/terraform/helper/schema"
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)
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func resourceAwsAlbTargetGroupAttachment() *schema.Resource {
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return &schema.Resource{
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Create: resourceAwsAlbAttachmentCreate,
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Read: resourceAwsAlbAttachmentRead,
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Delete: resourceAwsAlbAttachmentDelete,
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Schema: map[string]*schema.Schema{
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"target_group_arn": {
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Type: schema.TypeString,
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ForceNew: true,
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Required: true,
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},
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"target_id": {
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Type: schema.TypeString,
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ForceNew: true,
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Required: true,
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},
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"port": {
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Type: schema.TypeInt,
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ForceNew: true,
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Optional: true,
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},
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},
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}
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}
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func resourceAwsAlbAttachmentCreate(d *schema.ResourceData, meta interface{}) error {
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elbconn := meta.(*AWSClient).elbv2conn
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target := &elbv2.TargetDescription{
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Id: aws.String(d.Get("target_id").(string)),
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}
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if v, ok := d.GetOk("port"); ok {
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target.Port = aws.Int64(int64(v.(int)))
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}
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params := &elbv2.RegisterTargetsInput{
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TargetGroupArn: aws.String(d.Get("target_group_arn").(string)),
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Targets: []*elbv2.TargetDescription{target},
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}
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log.Printf("[INFO] Registering Target %s with Target Group %s", d.Get("target_id").(string),
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d.Get("target_group_arn").(string))
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_, err := elbconn.RegisterTargets(params)
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if err != nil {
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return errwrap.Wrapf("Error registering targets with target group: {{err}}", err)
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}
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d.SetId(resource.PrefixedUniqueId(fmt.Sprintf("%s-", d.Get("target_group_arn"))))
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return nil
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}
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func resourceAwsAlbAttachmentDelete(d *schema.ResourceData, meta interface{}) error {
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elbconn := meta.(*AWSClient).elbv2conn
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target := &elbv2.TargetDescription{
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Id: aws.String(d.Get("target_id").(string)),
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}
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if v, ok := d.GetOk("port"); ok {
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target.Port = aws.Int64(int64(v.(int)))
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}
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params := &elbv2.DeregisterTargetsInput{
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TargetGroupArn: aws.String(d.Get("target_group_arn").(string)),
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Targets: []*elbv2.TargetDescription{target},
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}
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_, err := elbconn.DeregisterTargets(params)
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if err != nil && !isTargetGroupNotFound(err) {
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return errwrap.Wrapf("Error deregistering Targets: {{err}}", err)
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}
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d.SetId("")
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return nil
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}
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// resourceAwsAlbAttachmentRead requires all of the fields in order to describe the correct
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// target, so there is no work to do beyond ensuring that the target and group still exist.
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func resourceAwsAlbAttachmentRead(d *schema.ResourceData, meta interface{}) error {
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elbconn := meta.(*AWSClient).elbv2conn
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target := &elbv2.TargetDescription{
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Id: aws.String(d.Get("target_id").(string)),
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}
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if v, ok := d.GetOk("port"); ok {
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target.Port = aws.Int64(int64(v.(int)))
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}
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resp, err := elbconn.DescribeTargetHealth(&elbv2.DescribeTargetHealthInput{
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TargetGroupArn: aws.String(d.Get("target_group_arn").(string)),
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Targets: []*elbv2.TargetDescription{target},
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})
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if err != nil {
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if isTargetGroupNotFound(err) {
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log.Printf("[WARN] Target group does not exist, removing target attachment %s", d.Id())
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d.SetId("")
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return nil
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}
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if isInvalidTarget(err) {
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log.Printf("[WARN] Target does not exist, removing target attachment %s", d.Id())
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d.SetId("")
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return nil
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}
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return errwrap.Wrapf("Error reading Target Health: {{err}}", err)
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}
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if len(resp.TargetHealthDescriptions) != 1 {
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log.Printf("[WARN] Target does not exist, removing target attachment %s", d.Id())
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d.SetId("")
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return nil
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}
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return nil
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}
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func isInvalidTarget(err error) bool {
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elberr, ok := err.(awserr.Error)
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return ok && elberr.Code() == "InvalidTarget"
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}
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