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resource_aws_waf_size_constraint_set.go
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resource_aws_waf_size_constraint_set.go
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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 resourceAwsWafSizeConstraintSet() *schema.Resource {
return &schema.Resource{
Create: resourceAwsWafSizeConstraintSetCreate,
Read: resourceAwsWafSizeConstraintSetRead,
Update: resourceAwsWafSizeConstraintSetUpdate,
Delete: resourceAwsWafSizeConstraintSetDelete,
Schema: map[string]*schema.Schema{
"name": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"size_constraints": &schema.Schema{
Type: schema.TypeSet,
Optional: 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,
},
},
},
},
"comparison_operator": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
"size": &schema.Schema{
Type: schema.TypeInt,
Required: true,
},
"text_transformation": &schema.Schema{
Type: schema.TypeString,
Required: true,
},
},
},
},
},
}
}
func resourceAwsWafSizeConstraintSetCreate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).wafconn
log.Printf("[INFO] Creating SizeConstraintSet: %s", d.Get("name").(string))
wr := newWafRetryer(conn, "global")
out, err := wr.RetryWithToken(func(token *string) (interface{}, error) {
params := &waf.CreateSizeConstraintSetInput{
ChangeToken: token,
Name: aws.String(d.Get("name").(string)),
}
return conn.CreateSizeConstraintSet(params)
})
if err != nil {
return errwrap.Wrapf("[ERROR] Error creating SizeConstraintSet: {{err}}", err)
}
resp := out.(*waf.CreateSizeConstraintSetOutput)
d.SetId(*resp.SizeConstraintSet.SizeConstraintSetId)
return resourceAwsWafSizeConstraintSetUpdate(d, meta)
}
func resourceAwsWafSizeConstraintSetRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).wafconn
log.Printf("[INFO] Reading SizeConstraintSet: %s", d.Get("name").(string))
params := &waf.GetSizeConstraintSetInput{
SizeConstraintSetId: aws.String(d.Id()),
}
resp, err := conn.GetSizeConstraintSet(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.SizeConstraintSet.Name)
d.Set("size_constraints", flattenWafSizeConstraints(resp.SizeConstraintSet.SizeConstraints))
return nil
}
func resourceAwsWafSizeConstraintSetUpdate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).wafconn
if d.HasChange("size_constraints") {
o, n := d.GetChange("size_constraints")
oldS, newS := o.(*schema.Set).List(), n.(*schema.Set).List()
err := updateSizeConstraintSetResource(d.Id(), oldS, newS, conn)
if err != nil {
return errwrap.Wrapf("[ERROR] Error updating SizeConstraintSet: {{err}}", err)
}
}
return resourceAwsWafSizeConstraintSetRead(d, meta)
}
func resourceAwsWafSizeConstraintSetDelete(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).wafconn
oldConstraints := d.Get("size_constraints").(*schema.Set).List()
if len(oldConstraints) > 0 {
noConstraints := []interface{}{}
err := updateSizeConstraintSetResource(d.Id(), oldConstraints, noConstraints, conn)
if err != nil {
return errwrap.Wrapf("[ERROR] Error deleting SizeConstraintSet: {{err}}", err)
}
}
wr := newWafRetryer(conn, "global")
_, err := wr.RetryWithToken(func(token *string) (interface{}, error) {
req := &waf.DeleteSizeConstraintSetInput{
ChangeToken: token,
SizeConstraintSetId: aws.String(d.Id()),
}
return conn.DeleteSizeConstraintSet(req)
})
if err != nil {
return errwrap.Wrapf("[ERROR] Error deleting SizeConstraintSet: {{err}}", err)
}
return nil
}
func updateSizeConstraintSetResource(id string, oldS, newS []interface{}, conn *waf.WAF) error {
wr := newWafRetryer(conn, "global")
_, err := wr.RetryWithToken(func(token *string) (interface{}, error) {
req := &waf.UpdateSizeConstraintSetInput{
ChangeToken: token,
SizeConstraintSetId: aws.String(id),
Updates: diffWafSizeConstraints(oldS, newS),
}
log.Printf("[INFO] Updating WAF Size Constraint constraints: %s", req)
return conn.UpdateSizeConstraintSet(req)
})
if err != nil {
return errwrap.Wrapf("[ERROR] Error updating SizeConstraintSet: {{err}}", err)
}
return nil
}
func flattenWafSizeConstraints(sc []*waf.SizeConstraint) []interface{} {
out := make([]interface{}, len(sc), len(sc))
for i, c := range sc {
m := make(map[string]interface{})
m["comparison_operator"] = *c.ComparisonOperator
if c.FieldToMatch != nil {
m["field_to_match"] = flattenFieldToMatch(c.FieldToMatch)
}
m["size"] = *c.Size
m["text_transformation"] = *c.TextTransformation
out[i] = m
}
return out
}
func diffWafSizeConstraints(oldS, newS []interface{}) []*waf.SizeConstraintSetUpdate {
updates := make([]*waf.SizeConstraintSetUpdate, 0)
for _, os := range oldS {
constraint := os.(map[string]interface{})
if idx, contains := sliceContainsMap(newS, constraint); contains {
newS = append(newS[:idx], newS[idx+1:]...)
continue
}
updates = append(updates, &waf.SizeConstraintSetUpdate{
Action: aws.String(waf.ChangeActionDelete),
SizeConstraint: &waf.SizeConstraint{
FieldToMatch: expandFieldToMatch(constraint["field_to_match"].(*schema.Set).List()[0].(map[string]interface{})),
ComparisonOperator: aws.String(constraint["comparison_operator"].(string)),
Size: aws.Int64(int64(constraint["size"].(int))),
TextTransformation: aws.String(constraint["text_transformation"].(string)),
},
})
}
for _, ns := range newS {
constraint := ns.(map[string]interface{})
updates = append(updates, &waf.SizeConstraintSetUpdate{
Action: aws.String(waf.ChangeActionInsert),
SizeConstraint: &waf.SizeConstraint{
FieldToMatch: expandFieldToMatch(constraint["field_to_match"].(*schema.Set).List()[0].(map[string]interface{})),
ComparisonOperator: aws.String(constraint["comparison_operator"].(string)),
Size: aws.Int64(int64(constraint["size"].(int))),
TextTransformation: aws.String(constraint["text_transformation"].(string)),
},
})
}
return updates
}