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block_fastly_service_v1_acl.go
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block_fastly_service_v1_acl.go
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package fastly
import (
"fmt"
"log"
gofastly "github.com/fastly/go-fastly/v3/fastly"
"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
)
type ACLServiceAttributeHandler struct {
*DefaultServiceAttributeHandler
}
func NewServiceACL(sa ServiceMetadata) ServiceAttributeDefinition {
return &ACLServiceAttributeHandler{
&DefaultServiceAttributeHandler{
key: "acl",
serviceMetadata: sa,
},
}
}
func (h *ACLServiceAttributeHandler) Process(d *schema.ResourceData, latestVersion int, conn *gofastly.Client) error {
oldACLVal, newACLVal := d.GetChange(h.GetKey())
if oldACLVal == nil {
oldACLVal = new(schema.Set)
}
if newACLVal == nil {
newACLVal = new(schema.Set)
}
oldSet := oldACLVal.(*schema.Set)
newSet := newACLVal.(*schema.Set)
setDiff := NewSetDiff(func(resource interface{}) (interface{}, error) {
t, ok := resource.(map[string]interface{})
if !ok {
return nil, fmt.Errorf("resource failed to be type asserted: %+v", resource)
}
return t["name"], nil
})
diffResult, err := setDiff.Diff(oldSet, newSet)
if err != nil {
return err
}
// DELETE removed resources
for _, resource := range diffResult.Deleted {
resource := resource.(map[string]interface{})
if !resource["force_destroy"].(bool) {
mayDelete, err := isACLEmpty(d.Id(), resource["acl_id"].(string), conn)
if err != nil {
return err
}
if !mayDelete {
return fmt.Errorf("Cannot delete ACL (%s), list is not empty. Either delete the entries first, or set force_destroy to true and apply it before making this change.", resource["acl_id"].(string))
}
}
opts := gofastly.DeleteACLInput{
ServiceID: d.Id(),
ServiceVersion: latestVersion,
Name: resource["name"].(string),
}
log.Printf("[DEBUG] Fastly ACL removal opts: %#v", opts)
err := conn.DeleteACL(&opts)
if errRes, ok := err.(*gofastly.HTTPError); ok {
if errRes.StatusCode != 404 {
return err
}
} else if err != nil {
return err
}
}
// CREATE new resources
for _, resource := range diffResult.Added {
resource := resource.(map[string]interface{})
opts := gofastly.CreateACLInput{
ServiceID: d.Id(),
ServiceVersion: latestVersion,
Name: resource["name"].(string),
}
log.Printf("[DEBUG] Fastly ACL creation opts: %#v", opts)
_, err := conn.CreateACL(&opts)
if err != nil {
return err
}
}
// UPDATE modified resources (NOT IMPLEMENTED)
//
// Although the go-fastly API client enables updating of a resource by
// its 'name' attribute, this isn't possible within terraform due to
// constraints in the data model/schema of the resources not having a uid.
//
// Because of this we do not implement any logic for updating the ACL
// resource, only CREATE and DELETE functionality.
return nil
}
func (h *ACLServiceAttributeHandler) Read(d *schema.ResourceData, s *gofastly.ServiceDetail, conn *gofastly.Client) error {
log.Printf("[DEBUG] Refreshing ACLs for (%s)", d.Id())
aclList, err := conn.ListACLs(&gofastly.ListACLsInput{
ServiceID: d.Id(),
ServiceVersion: s.ActiveVersion.Number,
})
if err != nil {
return fmt.Errorf("[ERR] Error looking up ACLs for (%s), version (%v): %s", d.Id(), s.ActiveVersion.Number, err)
}
al := flattenACLs(aclList)
// Match up force_destroy on each ACL from schema.ResourceData to avoid d.Set overwriting it with null
stateACLs := d.Get(h.GetKey()).(*schema.Set).List()
for _, acl := range al {
for _, sa := range stateACLs {
stateACL := sa.(map[string]interface{})
if acl["name"] == stateACL["name"] {
acl["force_destroy"] = stateACL["force_destroy"]
break
}
}
}
if err := d.Set(h.GetKey(), al); err != nil {
log.Printf("[WARN] Error setting ACLs for (%s): %s", d.Id(), err)
}
return nil
}
func (h *ACLServiceAttributeHandler) Register(s *schema.Resource) error {
s.Schema[h.GetKey()] = &schema.Schema{
Type: schema.TypeSet,
Optional: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
// Required fields
"name": {
Type: schema.TypeString,
Required: true,
Description: "A unique name to identify this ACL. It is important to note that changing this attribute will delete and recreate the ACL, and discard the current items in the ACL",
},
// Optional fields
"acl_id": {
Type: schema.TypeString,
Computed: true,
Description: "The ID of the ACL",
},
"force_destroy": {
Type: schema.TypeBool,
Default: false,
Optional: true,
Description: "Allow the ACL to be deleted, even if it contains entries. Defaults to false.",
},
},
},
}
return nil
}
func flattenACLs(aclList []*gofastly.ACL) []map[string]interface{} {
var al []map[string]interface{}
for _, acl := range aclList {
// Convert ACLs to a map for saving to state.
aclMap := map[string]interface{}{
"acl_id": acl.ID,
"name": acl.Name,
}
// prune any empty values that come from the default string value in structs
for k, v := range aclMap {
if v == "" {
delete(aclMap, k)
}
}
al = append(al, aclMap)
}
return al
}
func isACLEmpty(serviceID, aclID string, conn *gofastly.Client) (bool, error) {
entries, err := conn.ListACLEntries(&gofastly.ListACLEntriesInput{
ServiceID: serviceID,
ACLID: aclID,
})
if err != nil {
return false, err
}
return len(entries) == 0, nil
}