resource_aws_waf_xss_match_set.go

package aws

import (
	"log"

	"github.com/aws/aws-sdk-go/aws"
	"github.com/aws/aws-sdk-go/aws/awserr"
	"github.com/aws/aws-sdk-go/service/waf"
	"github.com/hashicorp/errwrap"
	"github.com/hashicorp/terraform/helper/schema"
)

func resourceAwsWafXssMatchSet() *schema.Resource {
	return &schema.Resource{
		Create: resourceAwsWafXssMatchSetCreate,
		Read:   resourceAwsWafXssMatchSetRead,
		Update: resourceAwsWafXssMatchSetUpdate,
		Delete: resourceAwsWafXssMatchSetDelete,

		Schema: map[string]*schema.Schema{
			"name": &schema.Schema{
				Type:     schema.TypeString,
				Required: true,
				ForceNew: true,
			},
			"xss_match_tuples": &schema.Schema{
				Type:     schema.TypeSet,
				Required: true,
				Elem: &schema.Resource{
					Schema: map[string]*schema.Schema{
						"field_to_match": {
							Type:     schema.TypeSet,
							Required: true,
							MaxItems: 1,
							Elem: &schema.Resource{
								Schema: map[string]*schema.Schema{
									"data": {
										Type:     schema.TypeString,
										Optional: true,
									},
									"type": {
										Type:     schema.TypeString,
										Required: true,
									},
								},
							},
						},
						"text_transformation": &schema.Schema{
							Type:     schema.TypeString,
							Required: true,
						},
					},
				},
			},
		},
	}
}

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

	log.Printf("[INFO] Creating XssMatchSet: %s", d.Get("name").(string))

	wr := newWafRetryer(conn, "global")
	out, err := wr.RetryWithToken(func(token *string) (interface{}, error) {
		params := &waf.CreateXssMatchSetInput{
			ChangeToken: token,
			Name:        aws.String(d.Get("name").(string)),
		}

		return conn.CreateXssMatchSet(params)
	})
	if err != nil {
		return errwrap.Wrapf("[ERROR] Error creating XssMatchSet: {{err}}", err)
	}
	resp := out.(*waf.CreateXssMatchSetOutput)

	d.SetId(*resp.XssMatchSet.XssMatchSetId)

	return resourceAwsWafXssMatchSetUpdate(d, meta)
}

func resourceAwsWafXssMatchSetRead(d *schema.ResourceData, meta interface{}) error {
	conn := meta.(*AWSClient).wafconn
	log.Printf("[INFO] Reading XssMatchSet: %s", d.Get("name").(string))
	params := &waf.GetXssMatchSetInput{
		XssMatchSetId: aws.String(d.Id()),
	}

	resp, err := conn.GetXssMatchSet(params)
	if err != nil {
		if awsErr, ok := err.(awserr.Error); ok && awsErr.Code() == "WAFNonexistentItemException" {
			log.Printf("[WARN] WAF IPSet (%s) not found, error code (404)", d.Id())
			d.SetId("")
			return nil
		}

		return err
	}

	d.Set("name", resp.XssMatchSet.Name)

	return nil
}

func resourceAwsWafXssMatchSetUpdate(d *schema.ResourceData, meta interface{}) error {
	log.Printf("[INFO] Updating XssMatchSet: %s", d.Get("name").(string))
	err := updateXssMatchSetResource(d, meta, waf.ChangeActionInsert)
	if err != nil {
		return errwrap.Wrapf("[ERROR] Error updating XssMatchSet: {{err}}", err)
	}
	return resourceAwsWafXssMatchSetRead(d, meta)
}

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

	log.Printf("[INFO] Deleting XssMatchSet: %s", d.Get("name").(string))
	err := updateXssMatchSetResource(d, meta, waf.ChangeActionDelete)
	if err != nil {
		return errwrap.Wrapf("[ERROR] Error deleting XssMatchSet: {{err}}", err)
	}

	wr := newWafRetryer(conn, "global")
	_, err = wr.RetryWithToken(func(token *string) (interface{}, error) {
		req := &waf.DeleteXssMatchSetInput{
			ChangeToken:   token,
			XssMatchSetId: aws.String(d.Id()),
		}

		return conn.DeleteXssMatchSet(req)
	})
	if err != nil {
		return errwrap.Wrapf("[ERROR] Error deleting XssMatchSet: {{err}}", err)
	}

	return nil
}

func updateXssMatchSetResource(d *schema.ResourceData, meta interface{}, ChangeAction string) error {
	conn := meta.(*AWSClient).wafconn

	wr := newWafRetryer(conn, "global")
	_, err := wr.RetryWithToken(func(token *string) (interface{}, error) {
		req := &waf.UpdateXssMatchSetInput{
			ChangeToken:   token,
			XssMatchSetId: aws.String(d.Id()),
		}

		xssMatchTuples := d.Get("xss_match_tuples").(*schema.Set)
		for _, xssMatchTuple := range xssMatchTuples.List() {
			xmt := xssMatchTuple.(map[string]interface{})
			xssMatchTupleUpdate := &waf.XssMatchSetUpdate{
				Action: aws.String(ChangeAction),
				XssMatchTuple: &waf.XssMatchTuple{
					FieldToMatch:       expandFieldToMatch(xmt["field_to_match"].(*schema.Set).List()[0].(map[string]interface{})),
					TextTransformation: aws.String(xmt["text_transformation"].(string)),
				},
			}
			req.Updates = append(req.Updates, xssMatchTupleUpdate)
		}

		return conn.UpdateXssMatchSet(req)
	})
	if err != nil {
		return errwrap.Wrapf("[ERROR] Error updating XssMatchSet: {{err}}", err)
	}

	return nil
}