328 lines
8.4 KiB
Go
328 lines
8.4 KiB
Go
package aws
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
"log"
|
|
"time"
|
|
|
|
"github.com/hashicorp/terraform/helper/hashcode"
|
|
"github.com/hashicorp/terraform/helper/resource"
|
|
"github.com/hashicorp/terraform/helper/schema"
|
|
"github.com/mitchellh/goamz/ec2"
|
|
)
|
|
|
|
func resourceAwsNetworkAcl() *schema.Resource {
|
|
|
|
return &schema.Resource{
|
|
Create: resourceAwsNetworkAclCreate,
|
|
Read: resourceAwsNetworkAclRead,
|
|
Delete: resourceAwsNetworkAclDelete,
|
|
Update: resourceAwsNetworkAclUpdate,
|
|
|
|
Schema: map[string]*schema.Schema{
|
|
"vpc_id": &schema.Schema{
|
|
Type: schema.TypeString,
|
|
Required: true,
|
|
ForceNew: true,
|
|
Computed: false,
|
|
},
|
|
"subnet_id": &schema.Schema{
|
|
Type: schema.TypeString,
|
|
Optional: true,
|
|
ForceNew: true,
|
|
Computed: false,
|
|
},
|
|
"ingress": &schema.Schema{
|
|
Type: schema.TypeSet,
|
|
Required: false,
|
|
Optional: true,
|
|
Elem: &schema.Resource{
|
|
Schema: map[string]*schema.Schema{
|
|
"from_port": &schema.Schema{
|
|
Type: schema.TypeInt,
|
|
Required: true,
|
|
},
|
|
"to_port": &schema.Schema{
|
|
Type: schema.TypeInt,
|
|
Required: true,
|
|
},
|
|
"rule_no": &schema.Schema{
|
|
Type: schema.TypeInt,
|
|
Required: true,
|
|
},
|
|
"action": &schema.Schema{
|
|
Type: schema.TypeString,
|
|
Required: true,
|
|
},
|
|
"protocol": &schema.Schema{
|
|
Type: schema.TypeString,
|
|
Required: true,
|
|
},
|
|
"cidr_block": &schema.Schema{
|
|
Type: schema.TypeString,
|
|
Optional: true,
|
|
},
|
|
},
|
|
},
|
|
Set: resourceAwsNetworkAclEntryHash,
|
|
},
|
|
"egress": &schema.Schema{
|
|
Type: schema.TypeSet,
|
|
Required: false,
|
|
Optional: true,
|
|
Elem: &schema.Resource{
|
|
Schema: map[string]*schema.Schema{
|
|
"from_port": &schema.Schema{
|
|
Type: schema.TypeInt,
|
|
Required: true,
|
|
},
|
|
"to_port": &schema.Schema{
|
|
Type: schema.TypeInt,
|
|
Required: true,
|
|
},
|
|
"rule_no": &schema.Schema{
|
|
Type: schema.TypeInt,
|
|
Required: true,
|
|
},
|
|
"action": &schema.Schema{
|
|
Type: schema.TypeString,
|
|
Required: true,
|
|
},
|
|
"protocol": &schema.Schema{
|
|
Type: schema.TypeString,
|
|
Required: true,
|
|
},
|
|
"cidr_block": &schema.Schema{
|
|
Type: schema.TypeString,
|
|
Optional: true,
|
|
},
|
|
},
|
|
},
|
|
Set: resourceAwsNetworkAclEntryHash,
|
|
},
|
|
"tags": tagsSchema(),
|
|
},
|
|
}
|
|
}
|
|
|
|
func resourceAwsNetworkAclCreate(d *schema.ResourceData, meta interface{}) error {
|
|
|
|
ec2conn := meta.(*AWSClient).ec2conn
|
|
|
|
// Create the Network Acl
|
|
createOpts := &ec2.CreateNetworkAcl{
|
|
VpcId: d.Get("vpc_id").(string),
|
|
}
|
|
|
|
log.Printf("[DEBUG] Network Acl create config: %#v", createOpts)
|
|
resp, err := ec2conn.CreateNetworkAcl(createOpts)
|
|
if err != nil {
|
|
return fmt.Errorf("Error creating network acl: %s", err)
|
|
}
|
|
|
|
// Get the ID and store it
|
|
networkAcl := &resp.NetworkAcl
|
|
d.SetId(networkAcl.NetworkAclId)
|
|
log.Printf("[INFO] Network Acl ID: %s", networkAcl.NetworkAclId)
|
|
|
|
// Update rules and subnet association once acl is created
|
|
return resourceAwsNetworkAclUpdate(d, meta)
|
|
}
|
|
|
|
func resourceAwsNetworkAclRead(d *schema.ResourceData, meta interface{}) error {
|
|
ec2conn := meta.(*AWSClient).ec2conn
|
|
|
|
resp, err := ec2conn.NetworkAcls([]string{d.Id()}, ec2.NewFilter())
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if resp == nil {
|
|
return nil
|
|
}
|
|
|
|
networkAcl := &resp.NetworkAcls[0]
|
|
var ingressEntries []ec2.NetworkAclEntry
|
|
var egressEntries []ec2.NetworkAclEntry
|
|
|
|
// separate the ingress and egress rules
|
|
for _, e := range networkAcl.EntrySet {
|
|
if e.Egress == true {
|
|
egressEntries = append(egressEntries, e)
|
|
} else {
|
|
ingressEntries = append(ingressEntries, e)
|
|
}
|
|
}
|
|
|
|
d.Set("vpc_id", networkAcl.VpcId)
|
|
d.Set("ingress", ingressEntries)
|
|
d.Set("egress", egressEntries)
|
|
d.Set("tags", tagsToMap(networkAcl.Tags))
|
|
|
|
return nil
|
|
}
|
|
|
|
func resourceAwsNetworkAclUpdate(d *schema.ResourceData, meta interface{}) error {
|
|
ec2conn := meta.(*AWSClient).ec2conn
|
|
d.Partial(true)
|
|
|
|
if d.HasChange("ingress") {
|
|
err := updateNetworkAclEntries(d, "ingress", ec2conn)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
if d.HasChange("egress") {
|
|
err := updateNetworkAclEntries(d, "egress", ec2conn)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
if d.HasChange("subnet_id") {
|
|
|
|
//associate new subnet with the acl.
|
|
_, n := d.GetChange("subnet_id")
|
|
newSubnet := n.(string)
|
|
association, err := findNetworkAclAssociation(newSubnet, ec2conn)
|
|
if err != nil {
|
|
return fmt.Errorf("Failed to update acl %s with subnet %s: ", d.Id(), newSubnet, err)
|
|
}
|
|
_, err = ec2conn.ReplaceNetworkAclAssociation(association.NetworkAclAssociationId, d.Id())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
if err := setTags(ec2conn, d); err != nil {
|
|
return err
|
|
} else {
|
|
d.SetPartial("tags")
|
|
}
|
|
|
|
d.Partial(false)
|
|
return resourceAwsNetworkAclRead(d, meta)
|
|
}
|
|
|
|
func updateNetworkAclEntries(d *schema.ResourceData, entryType string, ec2conn *ec2.EC2) error {
|
|
|
|
o, n := d.GetChange(entryType)
|
|
|
|
if o == nil {
|
|
o = new(schema.Set)
|
|
}
|
|
if n == nil {
|
|
n = new(schema.Set)
|
|
}
|
|
|
|
os := o.(*schema.Set)
|
|
ns := n.(*schema.Set)
|
|
|
|
toBeDeleted, err := expandNetworkAclEntries(os.Difference(ns).List(), entryType)
|
|
if(err != nil){
|
|
return err
|
|
}
|
|
for _, remove := range toBeDeleted {
|
|
// Delete old Acl
|
|
_, err := ec2conn.DeleteNetworkAclEntry(d.Id(), remove.RuleNumber, remove.Egress)
|
|
if err != nil {
|
|
return fmt.Errorf("Error deleting %s entry: %s", entryType, err)
|
|
}
|
|
}
|
|
|
|
toBeCreated, err := expandNetworkAclEntries(ns.Difference(os).List(), entryType)
|
|
if(err != nil){
|
|
return err
|
|
}
|
|
for _, add := range toBeCreated {
|
|
// Add new Acl entry
|
|
_, err := ec2conn.CreateNetworkAclEntry(d.Id(), &add)
|
|
if err != nil {
|
|
return fmt.Errorf("Error creating %s entry: %s", entryType, err)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func resourceAwsNetworkAclDelete(d *schema.ResourceData, meta interface{}) error {
|
|
ec2conn := meta.(*AWSClient).ec2conn
|
|
|
|
log.Printf("[INFO] Deleting Network Acl: %s", d.Id())
|
|
return resource.Retry(5*time.Minute, func() error {
|
|
if _, err := ec2conn.DeleteNetworkAcl(d.Id()); err != nil {
|
|
ec2err := err.(*ec2.Error)
|
|
switch ec2err.Code {
|
|
case "InvalidNetworkAclID.NotFound":
|
|
return nil
|
|
case "DependencyViolation":
|
|
// In case of dependency violation, we remove the association between subnet and network acl.
|
|
// This means the subnet is attached to default acl of vpc.
|
|
association, err := findNetworkAclAssociation(d.Get("subnet_id").(string), ec2conn)
|
|
if err != nil {
|
|
return fmt.Errorf("Depedency voilation: Can not delete acl: %s", d.Id(), err)
|
|
}
|
|
defaultAcl, err := getDefaultNetworkAcl(d.Get("vpc_id").(string), ec2conn)
|
|
if err != nil {
|
|
return fmt.Errorf("Depedency voilation: Can not delete acl %s", d.Id(), err)
|
|
}
|
|
_, err = ec2conn.ReplaceNetworkAclAssociation(association.NetworkAclAssociationId, defaultAcl.NetworkAclId)
|
|
return resource.RetryError{err}
|
|
default:
|
|
// Any other error, we want to quit the retry loop immediately
|
|
return resource.RetryError{err}
|
|
}
|
|
}
|
|
log.Printf("[Info] Deleted network ACL %s successfully", d.Id())
|
|
return nil
|
|
})
|
|
}
|
|
|
|
func resourceAwsNetworkAclEntryHash(v interface{}) int {
|
|
var buf bytes.Buffer
|
|
m := v.(map[string]interface{})
|
|
buf.WriteString(fmt.Sprintf("%d-", m["from_port"].(int)))
|
|
buf.WriteString(fmt.Sprintf("%s-", m["to_port"].(int)))
|
|
buf.WriteString(fmt.Sprintf("%d-", m["rule_no"].(int)))
|
|
buf.WriteString(fmt.Sprintf("%s-", m["action"].(string)))
|
|
buf.WriteString(fmt.Sprintf("%s-", m["protocol"].(string)))
|
|
buf.WriteString(fmt.Sprintf("%s-", m["cidr_block"].(string)))
|
|
|
|
if v, ok := m["ssl_certificate_id"]; ok {
|
|
buf.WriteString(fmt.Sprintf("%s-", v.(string)))
|
|
}
|
|
|
|
return hashcode.String(buf.String())
|
|
}
|
|
|
|
func getDefaultNetworkAcl(vpc_id string, ec2conn *ec2.EC2) (defaultAcl *ec2.NetworkAcl, err error) {
|
|
filter := ec2.NewFilter()
|
|
filter.Add("default", "true")
|
|
filter.Add("vpc-id", vpc_id)
|
|
|
|
resp, err := ec2conn.NetworkAcls([]string{}, filter)
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &resp.NetworkAcls[0], nil
|
|
}
|
|
|
|
func findNetworkAclAssociation(subnetId string, ec2conn *ec2.EC2) (networkAclAssociation *ec2.NetworkAclAssociation, err error) {
|
|
filter := ec2.NewFilter()
|
|
filter.Add("association.subnet-id", subnetId)
|
|
|
|
resp, err := ec2conn.NetworkAcls([]string{}, filter)
|
|
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
for _, association := range resp.NetworkAcls[0].AssociationSet {
|
|
if association.SubnetId == subnetId {
|
|
return &association, nil
|
|
}
|
|
}
|
|
return nil, fmt.Errorf("could not find association for subnet %s ", subnetId)
|
|
}
|