r/aws_db_cluster_role_association - New resource.

Co-authored-by: Matthieu ANTOINE <[email protected]>

aws/resource_aws_db_cluster_role_association.go

@@ -0,0 +1,254 @@
+package aws
+
+import (
+	"fmt"
+	"log"
+	"strings"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/service/rds"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+)
+
+// Constants not currently provided by the AWS Go SDK
+const (
+	rdsDbClusterRoleStatusActive  = "ACTIVE"
+	rdsDbClusterRoleStatusDeleted = "DELETED"
+	rdsDbClusterRoleStatusPending = "PENDING"
+)
+
+func resourceAwsDbClusterRoleAssociation() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceAwsDbClusterRoleAssociationCreate,
+		Read:   resourceAwsDbClusterRoleAssociationRead,
+		Delete: resourceAwsDbClusterRoleAssociationDelete,
+
+		Importer: &schema.ResourceImporter{
+			State: schema.ImportStatePassthrough,
+		},
+
+		Schema: map[string]*schema.Schema{
+			"db_cluster_identifier": {
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+			"feature_name": {
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+			},
+			"role_arn": {
+				Type:         schema.TypeString,
+				Required:     true,
+				ForceNew:     true,
+				ValidateFunc: validateArn,
+			},
+		},
+	}
+}
+
+func resourceAwsDbClusterRoleAssociationCreate(d *schema.ResourceData, meta interface{}) error {
+	conn := meta.(*AWSClient).rdsconn
+
+	dbClusterIdentifier := d.Get("db_cluster_identifier").(string)
+	roleArn := d.Get("role_arn").(string)
+
+	input := &rds.AddRoleToDBClusterInput{
+		DBClusterIdentifier: aws.String(dbClusterIdentifier),
+		FeatureName:         aws.String(d.Get("feature_name").(string)),
+		RoleArn:             aws.String(roleArn),
+	}
+
+	log.Printf("[DEBUG] RDS DB Cluster (%s) IAM Role associating: %s", dbClusterIdentifier, roleArn)
+	_, err := conn.AddRoleToDBCluster(input)
+
+	if err != nil {
+		return fmt.Errorf("error associating RDS DB Cluster (%s) IAM Role (%s): %s", dbClusterIdentifier, roleArn, err)
+	}
+
+	d.SetId(fmt.Sprintf("%s,%s", dbClusterIdentifier, roleArn))
+
+	if err := waitForRdsDbClusterRoleAssociation(conn, dbClusterIdentifier, roleArn); err != nil {
+		return fmt.Errorf("error waiting for RDS DB Cluster (%s) IAM Role (%s) association: %s", dbClusterIdentifier, roleArn, err)
+	}
+
+	return resourceAwsDbClusterRoleAssociationRead(d, meta)
+}
+
+func resourceAwsDbClusterRoleAssociationRead(d *schema.ResourceData, meta interface{}) error {
+	conn := meta.(*AWSClient).rdsconn
+
+	dbClusterIdentifier, roleArn, err := resourceAwsDbClusterRoleAssociationDecodeID(d.Id())
+
+	if err != nil {
+		return fmt.Errorf("error reading resource ID: %s", err)
+	}
+
+	dbClusterRole, err := rdsDescribeDbClusterRole(conn, dbClusterIdentifier, roleArn)
+
+	if isAWSErr(err, rds.ErrCodeDBClusterNotFoundFault, "") {
+		log.Printf("[WARN] RDS DB Cluster (%s) not found, removing from state", dbClusterIdentifier)
+		d.SetId("")
+		return nil
+	}
+
+	if err != nil {
+		return fmt.Errorf("error reading RDS DB Cluster (%s) IAM Role (%s) association: %s", dbClusterIdentifier, roleArn, err)
+	}
+
+	if dbClusterRole == nil {
+		log.Printf("[WARN] RDS DB Cluster (%s) IAM Role (%s) association not found, removing from state", dbClusterIdentifier, roleArn)
+		d.SetId("")
+		return nil
+	}
+
+	d.Set("db_cluster_identifier", dbClusterIdentifier)
+	d.Set("feature_name", dbClusterRole.FeatureName)
+	d.Set("role_arn", dbClusterRole.RoleArn)
+
+	return nil
+}
+
+func resourceAwsDbClusterRoleAssociationDelete(d *schema.ResourceData, meta interface{}) error {
+	conn := meta.(*AWSClient).rdsconn
+
+	dbClusterIdentifier, roleArn, err := resourceAwsDbClusterRoleAssociationDecodeID(d.Id())
+
+	if err != nil {
+		return fmt.Errorf("error reading resource ID: %s", err)
+	}
+
+	input := &rds.RemoveRoleFromDBClusterInput{
+		DBClusterIdentifier: aws.String(dbClusterIdentifier),
+		FeatureName:         aws.String(d.Get("feature_name").(string)),
+		RoleArn:             aws.String(roleArn),
+	}
+
+	log.Printf("[DEBUG] RDS DB Cluster (%s) IAM Role disassociating: %s", dbClusterIdentifier, roleArn)
+	_, err = conn.RemoveRoleFromDBCluster(input)
+
+	if isAWSErr(err, rds.ErrCodeDBClusterNotFoundFault, "") {
+		return nil
+	}
+
+	if isAWSErr(err, rds.ErrCodeDBClusterRoleNotFoundFault, "") {
+		return nil
+	}
+
+	if err != nil {
+		return fmt.Errorf("error disassociating RDS DB Cluster (%s) IAM Role (%s): %s", dbClusterIdentifier, roleArn, err)
+	}
+
+	if err := waitForRdsDbClusterRoleDisassociation(conn, dbClusterIdentifier, roleArn); err != nil {
+		return fmt.Errorf("error waiting for RDS DB Cluster (%s) IAM Role (%s) disassociation: %s", dbClusterIdentifier, roleArn, err)
+	}
+
+	return nil
+}
+
+func resourceAwsDbClusterRoleAssociationDecodeID(id string) (string, string, error) {
+	parts := strings.SplitN(id, ",", 2)
+
+	if len(parts) != 2 || parts[0] == "" || parts[1] == "" {
+		return "", "", fmt.Errorf("unexpected format of ID (%s), expected DB-CLUSTER-ID,ROLE-ARN", id)
+	}
+
+	return parts[0], parts[1], nil
+}
+
+func rdsDescribeDbClusterRole(conn *rds.RDS, dbClusterIdentifier, roleArn string) (*rds.DBClusterRole, error) {
+	input := &rds.DescribeDBClustersInput{
+		DBClusterIdentifier: aws.String(dbClusterIdentifier),
+	}
+
+	log.Printf("[DEBUG] Describing RDS DB Cluster: %s", input)
+	output, err := conn.DescribeDBClusters(input)
+
+	if err != nil {
+		return nil, err
+	}
+
+	var dbCluster *rds.DBCluster
+
+	for _, outputDbCluster := range output.DBClusters {
+		if aws.StringValue(outputDbCluster.DBClusterIdentifier) == dbClusterIdentifier {
+			dbCluster = outputDbCluster
+			break
+		}
+	}
+
+	if dbCluster == nil {
+		return nil, nil
+	}
+
+	var dbClusterRole *rds.DBClusterRole
+
+	for _, associatedRole := range dbCluster.AssociatedRoles {
+		if aws.StringValue(associatedRole.RoleArn) == roleArn {
+			dbClusterRole = associatedRole
+			break
+		}
+	}
+
+	return dbClusterRole, nil
+}
+
+func waitForRdsDbClusterRoleAssociation(conn *rds.RDS, dbClusterIdentifier, roleArn string) error {
+	stateConf := &resource.StateChangeConf{
+		Pending: []string{rdsDbClusterRoleStatusPending},
+		Target:  []string{rdsDbClusterRoleStatusActive},
+		Refresh: func() (interface{}, string, error) {
+			dbClusterRole, err := rdsDescribeDbClusterRole(conn, dbClusterIdentifier, roleArn)
+
+			if err != nil {
+				return nil, "", err
+			}
+
+			return dbClusterRole, aws.StringValue(dbClusterRole.Status), nil
+		},
+		Timeout: 5 * time.Minute,
+		Delay:   5 * time.Second,
+	}
+
+	log.Printf("[DEBUG] Waiting for RDS DB Cluster (%s) IAM Role association: %s", dbClusterIdentifier, roleArn)
+	_, err := stateConf.WaitForState()
+
+	return err
+}
+
+func waitForRdsDbClusterRoleDisassociation(conn *rds.RDS, dbClusterIdentifier, roleArn string) error {
+	stateConf := &resource.StateChangeConf{
+		Pending: []string{
+			rdsDbClusterRoleStatusActive,
+			rdsDbClusterRoleStatusPending,
+		},
+		Target: []string{rdsDbClusterRoleStatusDeleted},
+		Refresh: func() (interface{}, string, error) {
+			dbClusterRole, err := rdsDescribeDbClusterRole(conn, dbClusterIdentifier, roleArn)
+
+			if isAWSErr(err, rds.ErrCodeDBClusterNotFoundFault, "") {
+				return &rds.DBClusterRole{}, rdsDbClusterRoleStatusDeleted, nil
+			}
+
+			if err != nil {
+				return nil, "", err
+			}
+
+			if dbClusterRole != nil {
+				return dbClusterRole, aws.StringValue(dbClusterRole.Status), nil
+			}
+
+			return &rds.DBClusterRole{}, rdsDbClusterRoleStatusDeleted, nil
+		},
+		Timeout: 5 * time.Minute,
+		Delay:   5 * time.Second,
+	}
+
+	log.Printf("[DEBUG] Waiting for RDS DB Cluster (%s) IAM Role disassociation: %s", dbClusterIdentifier, roleArn)
+	_, err := stateConf.WaitForState()
+
+	return err
+}