2016-08-19 00:43:11 +02:00
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package aws
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import (
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"errors"
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"fmt"
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"log"
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"strconv"
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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/schema"
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)
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func resourceAwsAlbListenerRule() *schema.Resource {
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return &schema.Resource{
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Create: resourceAwsAlbListenerRuleCreate,
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Read: resourceAwsAlbListenerRuleRead,
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Update: resourceAwsAlbListenerRuleUpdate,
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Delete: resourceAwsAlbListenerRuleDelete,
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Importer: &schema.ResourceImporter{
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State: schema.ImportStatePassthrough,
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},
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Schema: map[string]*schema.Schema{
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"arn": {
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Type: schema.TypeString,
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Computed: true,
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},
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"listener_arn": {
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Type: schema.TypeString,
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Required: true,
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},
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"priority": {
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Type: schema.TypeInt,
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Required: true,
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ValidateFunc: validateAwsAlbListenerRulePriority,
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},
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"action": {
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Type: schema.TypeList,
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Required: true,
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Elem: &schema.Resource{
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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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Required: true,
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},
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"type": {
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Type: schema.TypeString,
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Required: true,
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ValidateFunc: validateAwsAlbListenerActionType,
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},
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},
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},
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},
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"condition": {
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Type: schema.TypeList,
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Required: true,
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Elem: &schema.Resource{
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Schema: map[string]*schema.Schema{
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"field": {
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Type: schema.TypeString,
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Optional: true,
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ValidateFunc: validateAwsListenerRuleField,
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},
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"values": {
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Type: schema.TypeList,
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Elem: &schema.Schema{Type: schema.TypeString},
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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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},
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}
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}
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func resourceAwsAlbListenerRuleCreate(d *schema.ResourceData, meta interface{}) error {
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elbconn := meta.(*AWSClient).elbv2conn
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params := &elbv2.CreateRuleInput{
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ListenerArn: aws.String(d.Get("listener_arn").(string)),
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Priority: aws.Int64(int64(d.Get("priority").(int))),
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}
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actions := d.Get("action").([]interface{})
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params.Actions = make([]*elbv2.Action, len(actions))
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for i, action := range actions {
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actionMap := action.(map[string]interface{})
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params.Actions[i] = &elbv2.Action{
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TargetGroupArn: aws.String(actionMap["target_group_arn"].(string)),
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Type: aws.String(actionMap["type"].(string)),
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}
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}
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conditions := d.Get("condition").([]interface{})
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params.Conditions = make([]*elbv2.RuleCondition, len(conditions))
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for i, condition := range conditions {
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conditionMap := condition.(map[string]interface{})
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values := conditionMap["values"].([]interface{})
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params.Conditions[i] = &elbv2.RuleCondition{
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Field: aws.String(conditionMap["field"].(string)),
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Values: make([]*string, len(values)),
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}
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for j, value := range values {
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params.Conditions[i].Values[j] = aws.String(value.(string))
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}
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}
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resp, err := elbconn.CreateRule(params)
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if err != nil {
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return errwrap.Wrapf("Error creating ALB Listener Rule: {{err}}", err)
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}
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if len(resp.Rules) == 0 {
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return errors.New("Error creating ALB Listener Rule: no rules returned in response")
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}
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d.SetId(*resp.Rules[0].RuleArn)
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return resourceAwsAlbListenerRuleRead(d, meta)
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}
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func resourceAwsAlbListenerRuleRead(d *schema.ResourceData, meta interface{}) error {
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elbconn := meta.(*AWSClient).elbv2conn
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resp, err := elbconn.DescribeRules(&elbv2.DescribeRulesInput{
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RuleArns: []*string{aws.String(d.Id())},
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})
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if err != nil {
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if isRuleNotFound(err) {
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log.Printf("[WARN] DescribeRules - removing %s from state", 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(fmt.Sprintf("Error retrieving Rules for listener %s: {{err}}", d.Id()), err)
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}
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if len(resp.Rules) != 1 {
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return fmt.Errorf("Error retrieving Rule %q", d.Id())
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}
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rule := resp.Rules[0]
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d.Set("arn", rule.RuleArn)
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2017-01-27 20:55:34 +01:00
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// Rules are evaluated in priority order, from the lowest value to the highest value. The default rule has the lowest priority.
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if *rule.Priority == "default" {
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d.Set("priority", 99999)
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2016-08-19 00:43:11 +02:00
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} else {
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2017-01-27 20:55:34 +01:00
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if priority, err := strconv.Atoi(*rule.Priority); err != nil {
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return errwrap.Wrapf("Cannot convert rule priority %q to int: {{err}}", err)
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} else {
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d.Set("priority", priority)
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}
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2016-08-19 00:43:11 +02:00
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}
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actions := make([]interface{}, len(rule.Actions))
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for i, action := range rule.Actions {
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actionMap := make(map[string]interface{})
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actionMap["target_group_arn"] = *action.TargetGroupArn
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actionMap["type"] = *action.Type
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actions[i] = actionMap
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}
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d.Set("action", actions)
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conditions := make([]interface{}, len(rule.Conditions))
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for i, condition := range rule.Conditions {
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conditionMap := make(map[string]interface{})
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conditionMap["field"] = *condition.Field
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conditionValues := make([]string, len(condition.Values))
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for k, value := range condition.Values {
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conditionValues[k] = *value
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}
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conditionMap["values"] = conditionValues
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conditions[i] = conditionMap
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}
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d.Set("condition", conditions)
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return nil
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}
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func resourceAwsAlbListenerRuleUpdate(d *schema.ResourceData, meta interface{}) error {
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elbconn := meta.(*AWSClient).elbv2conn
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params := &elbv2.ModifyRuleInput{
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RuleArn: aws.String(d.Id()),
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}
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actions := d.Get("action").([]interface{})
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params.Actions = make([]*elbv2.Action, len(actions))
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for i, action := range actions {
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actionMap := action.(map[string]interface{})
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params.Actions[i] = &elbv2.Action{
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TargetGroupArn: aws.String(actionMap["target_group_arn"].(string)),
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Type: aws.String(actionMap["type"].(string)),
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}
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}
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conditions := d.Get("condition").([]interface{})
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params.Conditions = make([]*elbv2.RuleCondition, len(conditions))
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for i, condition := range conditions {
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conditionMap := condition.(map[string]interface{})
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values := conditionMap["values"].([]interface{})
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params.Conditions[i] = &elbv2.RuleCondition{
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Field: aws.String(conditionMap["field"].(string)),
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Values: make([]*string, len(values)),
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}
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for j, value := range values {
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params.Conditions[i].Values[j] = aws.String(value.(string))
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}
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}
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resp, err := elbconn.ModifyRule(params)
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if err != nil {
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return errwrap.Wrapf("Error modifying ALB Listener Rule: {{err}}", err)
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}
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if len(resp.Rules) == 0 {
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return errors.New("Error modifying creating ALB Listener Rule: no rules returned in response")
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}
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return resourceAwsAlbListenerRuleRead(d, meta)
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}
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func resourceAwsAlbListenerRuleDelete(d *schema.ResourceData, meta interface{}) error {
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elbconn := meta.(*AWSClient).elbv2conn
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_, err := elbconn.DeleteRule(&elbv2.DeleteRuleInput{
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RuleArn: aws.String(d.Id()),
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})
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if err != nil && !isRuleNotFound(err) {
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return errwrap.Wrapf("Error deleting ALB Listener Rule: {{err}}", err)
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}
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return nil
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}
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func validateAwsAlbListenerRulePriority(v interface{}, k string) (ws []string, errors []error) {
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value := v.(int)
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if value < 1 || value > 99999 {
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errors = append(errors, fmt.Errorf("%q must be in the range 1-99999", k))
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}
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return
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}
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func validateAwsListenerRuleField(v interface{}, k string) (ws []string, errors []error) {
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value := v.(string)
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if len(value) > 64 {
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errors = append(errors, fmt.Errorf("%q must be a maximum of 64 characters", k))
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}
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return
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}
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func isRuleNotFound(err error) bool {
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elberr, ok := err.(awserr.Error)
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return ok && elberr.Code() == "RuleNotFound"
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}
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