[WIP] New resource aws_db_proxy_target

aws/provider.go

@@ -518,6 +518,7 @@ func Provider() *schema.Provider {
 			"aws_db_parameter_group":                                  resourceAwsDbParameterGroup(),
 			"aws_db_proxy":                                            resourceAwsDbProxy(),
 			"aws_db_proxy_default_target_group":                       resourceAwsDbProxyDefaultTargetGroup(),
+			"aws_db_proxy_target":                                     resourceAwsDbProxyTarget(),
 			"aws_db_security_group":                                   resourceAwsDbSecurityGroup(),
 			"aws_db_snapshot":                                         resourceAwsDbSnapshot(),
 			"aws_db_subnet_group":                                     resourceAwsDbSubnetGroup(),

aws/resource_aws_db_proxy_target.go

@@ -0,0 +1,205 @@
+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/schema"
+)
+
+func resourceAwsDbProxyTarget() *schema.Resource {
+	return &schema.Resource{
+		Create: resourceAwsDbProxyTargetCreate,
+		Read:   resourceAwsDbProxyTargetRead,
+		Delete: resourceAwsDbProxyTargetDelete,
+		Importer: &schema.ResourceImporter{
+			State: schema.ImportStatePassthrough,
+		},
+
+		Timeouts: &schema.ResourceTimeout{
+			Create: schema.DefaultTimeout(30 * time.Minute),
+			Delete: schema.DefaultTimeout(30 * time.Minute),
+		},
+
+		Schema: map[string]*schema.Schema{
+			"db_proxy_name": {
+				Type:         schema.TypeString,
+				Required:     true,
+				ForceNew:     true,
+				ValidateFunc: validateRdsIdentifier,
+			},
+			"target_group_name": {
+				Type:         schema.TypeString,
+				Required:     true,
+				ForceNew:     true,
+				ValidateFunc: validateRdsIdentifier,
+			},
+			"db_instance_identifier": {
+				Type:     schema.TypeString,
+				Optional: true,
+				ForceNew: true,
+				ExactlyOneOf: []string{
+					"db_instance_identifier",
+					"db_cluster_identifier",
+				},
+				ValidateFunc: validateRdsIdentifier,
+			},
+			"db_cluster_identifier": {
+				Type:     schema.TypeString,
+				Optional: true,
+				ForceNew: true,
+				ExactlyOneOf: []string{
+					"db_instance_identifier",
+					"db_cluster_identifier",
+				},
+				ValidateFunc: validateRdsIdentifier,
+			},
+			"endpoint": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+			"port": {
+				Type:     schema.TypeInt,
+				Computed: true,
+			},
+			"rds_resource_id": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+			"target_arn": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+			"tracked_cluster_id": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+			"type": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+		},
+	}
+}
+
+func resourceAwsDbProxyTargetCreate(d *schema.ResourceData, meta interface{}) error {
+	conn := meta.(*AWSClient).rdsconn
+
+	dbProxyName := d.Get("db_proxy_name").(string)
+	targetGroupName := d.Get("target_group_name").(string)
+
+	params := rds.RegisterDBProxyTargetsInput{
+		DBProxyName:     aws.String(dbProxyName),
+		TargetGroupName: aws.String(targetGroupName),
+	}
+
+	if v, ok := d.GetOk("db_instance_identifier"); ok {
+		params.DBInstanceIdentifiers = []*string{aws.String(v.(string))}
+	}
+
+	if v, ok := d.GetOk("db_cluster_identifier"); ok {
+		params.DBClusterIdentifiers = []*string{aws.String(v.(string))}
+	}
+
+	log.Printf("[DEBUG] Register DB Proxy target: %#v", params)
+	resp, err := conn.RegisterDBProxyTargets(&params)
+	if err != nil {
+		return fmt.Errorf("Error registering DB Proxy target: %s", err)
+	}
+
+	dbProxyTarget := resp.DBProxyTargets[0]
+
+	d.SetId(strings.Join([]string{dbProxyName, targetGroupName, *dbProxyTarget.RdsResourceId}, "/"))
+	log.Printf("[INFO] DB Proxy target ID: %s", d.Id())
+
+	return resourceAwsDbProxyTargetRead(d, meta)
+}
+
+func resourceAwsDbProxyTargetParseID(id string) (string, string, string, error) {
+	idParts := strings.SplitN(id, "/", 3)
+	if len(idParts) != 3 || idParts[0] == "" || idParts[1] == "" || idParts[2] == "" {
+		return "", "", "", fmt.Errorf("unexpected format of ID (%s), expected db_proxy_name/target_group_name/target_arn", id)
+	}
+	return idParts[0], idParts[1], idParts[2], nil
+}
+
+func resourceAwsDbProxyTargetRead(d *schema.ResourceData, meta interface{}) error {
+	conn := meta.(*AWSClient).rdsconn
+
+	dbProxyName, targetGroupName, rdsResourceId, err := resourceAwsDbProxyTargetParseID(d.Id())
+	if err != nil {
+		return err
+	}
+
+	params := rds.DescribeDBProxyTargetsInput{
+		DBProxyName:     aws.String(dbProxyName),
+		TargetGroupName: aws.String(targetGroupName),
+	}
+
+	resp, err := conn.DescribeDBProxyTargets(&params)
+	if err != nil {
+		if isAWSErr(err, rds.ErrCodeDBProxyNotFoundFault, "") {
+			log.Printf("[WARN] DB Proxy Target (%s) not found, removing from state", d.Id())
+			d.SetId("")
+			return nil
+		}
+		if isAWSErr(err, rds.ErrCodeDBProxyTargetGroupNotFoundFault, "") {
+			log.Printf("[WARN] DB Proxy Target (%s) not found, removing from state", d.Id())
+			d.SetId("")
+			return nil
+		}
+		return fmt.Errorf("error reading RDS DB Proxy Target (%s): %w", d.Id(), err)
+	}
+
+	var dbProxyTarget *rds.DBProxyTarget
+	for _, target := range resp.Targets {
+		if aws.StringValue(target.RdsResourceId) == rdsResourceId {
+			dbProxyTarget = target
+			break
+		}
+	}
+
+	if dbProxyTarget == nil {
+		log.Printf("[WARN] DB Proxy Target (%s) not found, removing from state", d.Id())
+		d.SetId("")
+		return nil
+	}
+
+	d.Set("endpoint", dbProxyTarget.Endpoint)
+	d.Set("port", dbProxyTarget.Port)
+	d.Set("rds_resource_id", dbProxyTarget.RdsResourceId)
+	d.Set("target_arn", dbProxyTarget.TargetArn)
+	d.Set("tracked_cluster_id", dbProxyTarget.TrackedClusterId)
+	d.Set("type", dbProxyTarget.Type)
+
+	return nil
+}
+
+func resourceAwsDbProxyTargetDelete(d *schema.ResourceData, meta interface{}) error {
+	conn := meta.(*AWSClient).rdsconn
+
+	params := rds.DeregisterDBProxyTargetsInput{
+		DBProxyName:     aws.String(d.Get("db_proxy_name").(string)),
+		TargetGroupName: aws.String(d.Get("target_group_name").(string)),
+	}
+
+	if v, ok := d.GetOk("db_instance_identifier"); ok {
+		params.DBInstanceIdentifiers = []*string{aws.String(v.(string))}
+	}
+
+	if v, ok := d.GetOk("db_cluster_identifier"); ok {
+		params.DBClusterIdentifiers = []*string{aws.String(v.(string))}
+	}
+
+	log.Printf("[DEBUG] Deregister DB Proxy target: %#v", params)
+	_, err := conn.DeregisterDBProxyTargets(&params)
+	if err != nil {
+		return fmt.Errorf("Error deregistering DB Proxy target: %s", err)
+	}
+
+	return nil
+}