resource_aws_elastic_beanstalk_application.go

package aws

import (
	"fmt"
	"log"
	"time"

	"github.com/hashicorp/terraform/helper/schema"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/service/elasticbeanstalk"
	"github.com/hashicorp/terraform/helper/resource"
)

func resourceAwsElasticBeanstalkApplication() *schema.Resource {
	return &schema.Resource{
		Create: resourceAwsElasticBeanstalkApplicationCreate,
		Read:   resourceAwsElasticBeanstalkApplicationRead,
		Update: resourceAwsElasticBeanstalkApplicationUpdate,
		Delete: resourceAwsElasticBeanstalkApplicationDelete,
		Importer: &schema.ResourceImporter{
			State: schema.ImportStatePassthrough,
		},

		Schema: map[string]*schema.Schema{
			"name": &schema.Schema{
				Type:     schema.TypeString,
				Required: true,
				ForceNew: true,
			},
			"description": &schema.Schema{
				Type:     schema.TypeString,
				Optional: true,
				ForceNew: false,
			},
		},
	}
}

func resourceAwsElasticBeanstalkApplicationCreate(d *schema.ResourceData, meta interface{}) error {
	beanstalkConn := meta.(*AWSClient).elasticbeanstalkconn

	// Get the name and description
	name := d.Get("name").(string)
	description := d.Get("description").(string)

	log.Printf("[DEBUG] Elastic Beanstalk application create: %s, description: %s", name, description)

	req := &elasticbeanstalk.CreateApplicationInput{
		ApplicationName: aws.String(name),
		Description:     aws.String(description),
	}

	_, err := beanstalkConn.CreateApplication(req)
	if err != nil {
		return err
	}

	d.SetId(name)

	return resourceAwsElasticBeanstalkApplicationRead(d, meta)
}

func resourceAwsElasticBeanstalkApplicationUpdate(d *schema.ResourceData, meta interface{}) error {
	beanstalkConn := meta.(*AWSClient).elasticbeanstalkconn

	if d.HasChange("description") {
		if err := resourceAwsElasticBeanstalkApplicationDescriptionUpdate(beanstalkConn, d); err != nil {
			return err
		}
	}

	return resourceAwsElasticBeanstalkApplicationRead(d, meta)
}

func resourceAwsElasticBeanstalkApplicationDescriptionUpdate(beanstalkConn *elasticbeanstalk.ElasticBeanstalk, d *schema.ResourceData) error {
	name := d.Get("name").(string)
	description := d.Get("description").(string)

	log.Printf("[DEBUG] Elastic Beanstalk application: %s, update description: %s", name, description)

	_, err := beanstalkConn.UpdateApplication(&elasticbeanstalk.UpdateApplicationInput{
		ApplicationName: aws.String(name),
		Description:     aws.String(description),
	})

	return err
}

func resourceAwsElasticBeanstalkApplicationRead(d *schema.ResourceData, meta interface{}) error {
	conn := meta.(*AWSClient).elasticbeanstalkconn

	var app *elasticbeanstalk.ApplicationDescription
	err := resource.Retry(30*time.Second, func() *resource.RetryError {
		var err error
		app, err = getBeanstalkApplication(d.Id(), conn)
		if err != nil {
			return resource.NonRetryableError(err)
		}

		if app == nil {
			err = fmt.Errorf("Elastic Beanstalk Application %q not found", d.Id())
			if d.IsNewResource() {
				return resource.RetryableError(err)
			}
			return resource.NonRetryableError(err)
		}
		return nil
	})
	if err != nil {
		if app == nil {
			log.Printf("[WARN] %s, removing from state", err)
			d.SetId("")
			return nil
		}
		return err
	}

	d.Set("name", app.ApplicationName)
	d.Set("description", app.Description)
	return nil
}

func resourceAwsElasticBeanstalkApplicationDelete(d *schema.ResourceData, meta interface{}) error {
	beanstalkConn := meta.(*AWSClient).elasticbeanstalkconn

	_, err := beanstalkConn.DeleteApplication(&elasticbeanstalk.DeleteApplicationInput{
		ApplicationName: aws.String(d.Id()),
	})
	if err != nil {
		return err
	}

	return resource.Retry(10*time.Second, func() *resource.RetryError {
		app, err := getBeanstalkApplication(d.Id(), meta.(*AWSClient).elasticbeanstalkconn)
		if err != nil {
			return resource.NonRetryableError(err)
		}

		if app != nil {
			return resource.RetryableError(
				fmt.Errorf("Beanstalk Application (%s) still exists: %s", d.Id(), err))
		}
		return nil
	})
}

func getBeanstalkApplication(id string, conn *elasticbeanstalk.ElasticBeanstalk) (*elasticbeanstalk.ApplicationDescription, error) {
	resp, err := conn.DescribeApplications(&elasticbeanstalk.DescribeApplicationsInput{
		ApplicationNames: []*string{aws.String(id)},
	})
	if err != nil {
		if isAWSErr(err, "InvalidBeanstalkAppID.NotFound", "") {
			return nil, nil
		}
		return nil, err
	}

	if len(resp.Applications) > 1 {
		return nil, fmt.Errorf("Error %d Applications matched, expected 1", len(resp.Applications))
	}

	if len(resp.Applications) == 0 {
		return nil, nil
	}

	return resp.Applications[0], nil
}