terraform/builtin/providers/aws/resource_aws_vpn_connection.go

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package aws
import (
"bytes"
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"encoding/xml"
"fmt"
"log"
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"sort"
"time"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/service/ec2"
"github.com/hashicorp/terraform/helper/hashcode"
"github.com/hashicorp/terraform/helper/resource"
"github.com/hashicorp/terraform/helper/schema"
)
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type XmlVpnConnectionConfig struct {
Tunnels []XmlIpsecTunnel `xml:"ipsec_tunnel"`
}
type XmlIpsecTunnel struct {
OutsideAddress string `xml:"vpn_gateway>tunnel_outside_address>ip_address"`
PreSharedKey string `xml:"ike>pre_shared_key"`
}
type TunnelInfo struct {
Tunnel1Address string
Tunnel1PreSharedKey string
Tunnel2Address string
Tunnel2PreSharedKey string
}
func (slice XmlVpnConnectionConfig) Len() int {
return len(slice.Tunnels)
}
func (slice XmlVpnConnectionConfig) Less(i, j int) bool {
return slice.Tunnels[i].OutsideAddress < slice.Tunnels[j].OutsideAddress
}
func (slice XmlVpnConnectionConfig) Swap(i, j int) {
slice.Tunnels[i], slice.Tunnels[j] = slice.Tunnels[j], slice.Tunnels[i]
}
func resourceAwsVpnConnection() *schema.Resource {
return &schema.Resource{
Create: resourceAwsVpnConnectionCreate,
Read: resourceAwsVpnConnectionRead,
Update: resourceAwsVpnConnectionUpdate,
Delete: resourceAwsVpnConnectionDelete,
Schema: map[string]*schema.Schema{
"vpn_gateway_id": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"customer_gateway_id": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"type": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"static_routes_only": &schema.Schema{
Type: schema.TypeBool,
Required: true,
ForceNew: true,
},
"tags": tagsSchema(),
// Begin read only attributes
"customer_gateway_configuration": &schema.Schema{
Type: schema.TypeString,
Computed: true,
Optional: true,
},
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"tunnel1_address": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"tunnel1_preshared_key": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"tunnel2_address": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"tunnel2_preshared_key": &schema.Schema{
Type: schema.TypeString,
Computed: true,
},
"routes": &schema.Schema{
Type: schema.TypeSet,
Computed: true,
Optional: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"destination_cidr_block": &schema.Schema{
Type: schema.TypeString,
Computed: true,
Optional: true,
},
"source": &schema.Schema{
Type: schema.TypeString,
Computed: true,
Optional: true,
},
"state": &schema.Schema{
Type: schema.TypeString,
Computed: true,
Optional: true,
},
},
},
Set: func(v interface{}) int {
var buf bytes.Buffer
m := v.(map[string]interface{})
buf.WriteString(fmt.Sprintf("%s-", m["destination_cidr_block"].(string)))
buf.WriteString(fmt.Sprintf("%s-", m["source"].(string)))
buf.WriteString(fmt.Sprintf("%s-", m["state"].(string)))
return hashcode.String(buf.String())
},
},
"vgw_telemetry": &schema.Schema{
Type: schema.TypeSet,
Computed: true,
Optional: true,
Elem: &schema.Resource{
Schema: map[string]*schema.Schema{
"accepted_route_count": &schema.Schema{
Type: schema.TypeInt,
Computed: true,
Optional: true,
},
"last_status_change": &schema.Schema{
Type: schema.TypeString,
Computed: true,
Optional: true,
},
"outside_ip_address": &schema.Schema{
Type: schema.TypeString,
Computed: true,
Optional: true,
},
"status": &schema.Schema{
Type: schema.TypeString,
Computed: true,
Optional: true,
},
"status_message": &schema.Schema{
Type: schema.TypeString,
Computed: true,
Optional: true,
},
},
},
Set: func(v interface{}) int {
var buf bytes.Buffer
m := v.(map[string]interface{})
buf.WriteString(fmt.Sprintf("%s-", m["outside_ip_address"].(string)))
return hashcode.String(buf.String())
},
},
},
}
}
func resourceAwsVpnConnectionCreate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).ec2conn
connectOpts := &ec2.VpnConnectionOptionsSpecification{
StaticRoutesOnly: aws.Bool(d.Get("static_routes_only").(bool)),
}
createOpts := &ec2.CreateVpnConnectionInput{
CustomerGatewayId: aws.String(d.Get("customer_gateway_id").(string)),
Options: connectOpts,
Type: aws.String(d.Get("type").(string)),
VpnGatewayId: aws.String(d.Get("vpn_gateway_id").(string)),
}
// Create the VPN Connection
log.Printf("[DEBUG] Creating vpn connection")
resp, err := conn.CreateVpnConnection(createOpts)
if err != nil {
return fmt.Errorf("Error creating vpn connection: %s", err)
}
// Store the ID
vpnConnection := resp.VpnConnection
d.SetId(*vpnConnection.VpnConnectionId)
log.Printf("[INFO] VPN connection ID: %s", *vpnConnection.VpnConnectionId)
// Wait for the connection to become available. This has an obscenely
// high default timeout because AWS VPN connections are notoriously
// slow at coming up or going down. There's also no point in checking
// more frequently than every ten seconds.
stateConf := &resource.StateChangeConf{
Pending: []string{"pending"},
Target: []string{"available"},
Refresh: vpnConnectionRefreshFunc(conn, *vpnConnection.VpnConnectionId),
Timeout: 30 * time.Minute,
Delay: 10 * time.Second,
MinTimeout: 10 * time.Second,
}
_, stateErr := stateConf.WaitForState()
if stateErr != nil {
return fmt.Errorf(
"Error waiting for VPN connection (%s) to become ready: %s",
*vpnConnection.VpnConnectionId, err)
}
// Create tags.
if err := setTags(conn, d); err != nil {
return err
}
// Read off the API to populate our RO fields.
return resourceAwsVpnConnectionRead(d, meta)
}
func vpnConnectionRefreshFunc(conn *ec2.EC2, connectionId string) resource.StateRefreshFunc {
return func() (interface{}, string, error) {
resp, err := conn.DescribeVpnConnections(&ec2.DescribeVpnConnectionsInput{
VpnConnectionIds: []*string{aws.String(connectionId)},
})
if err != nil {
if ec2err, ok := err.(awserr.Error); ok && ec2err.Code() == "InvalidVpnConnectionID.NotFound" {
resp = nil
} else {
log.Printf("Error on VPNConnectionRefresh: %s", err)
return nil, "", err
}
}
if resp == nil || len(resp.VpnConnections) == 0 {
return nil, "", nil
}
connection := resp.VpnConnections[0]
return connection, *connection.State, nil
}
}
func resourceAwsVpnConnectionRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).ec2conn
resp, err := conn.DescribeVpnConnections(&ec2.DescribeVpnConnectionsInput{
VpnConnectionIds: []*string{aws.String(d.Id())},
})
if err != nil {
if ec2err, ok := err.(awserr.Error); ok && ec2err.Code() == "InvalidVpnConnectionID.NotFound" {
d.SetId("")
return nil
} else {
log.Printf("[ERROR] Error finding VPN connection: %s", err)
return err
}
}
if len(resp.VpnConnections) != 1 {
return fmt.Errorf("[ERROR] Error finding VPN connection: %s", d.Id())
}
vpnConnection := resp.VpnConnections[0]
// Set attributes under the user's control.
d.Set("vpn_gateway_id", vpnConnection.VpnGatewayId)
d.Set("customer_gateway_id", vpnConnection.CustomerGatewayId)
d.Set("type", vpnConnection.Type)
d.Set("tags", tagsToMap(vpnConnection.Tags))
if vpnConnection.Options != nil {
if err := d.Set("static_routes_only", vpnConnection.Options.StaticRoutesOnly); err != nil {
return err
}
}
// Set read only attributes.
d.Set("customer_gateway_configuration", vpnConnection.CustomerGatewayConfiguration)
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if vpnConnection.CustomerGatewayConfiguration != nil {
tunnelInfo := xmlConfigToTunnelInfo(*vpnConnection.CustomerGatewayConfiguration)
d.Set("tunnel1_address", tunnelInfo.Tunnel1Address)
d.Set("tunnel1_preshared_key", tunnelInfo.Tunnel1PreSharedKey)
d.Set("tunnel2_address", tunnelInfo.Tunnel2Address)
d.Set("tunnel2_preshared_key", tunnelInfo.Tunnel2PreSharedKey)
}
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if err := d.Set("vgw_telemetry", telemetryToMapList(vpnConnection.VgwTelemetry)); err != nil {
return err
}
if vpnConnection.Routes != nil {
if err := d.Set("routes", routesToMapList(vpnConnection.Routes)); err != nil {
return err
}
}
return nil
}
func resourceAwsVpnConnectionUpdate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).ec2conn
// Update tags if required.
if err := setTags(conn, d); err != nil {
return err
}
d.SetPartial("tags")
return resourceAwsVpnConnectionRead(d, meta)
}
func resourceAwsVpnConnectionDelete(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).ec2conn
_, err := conn.DeleteVpnConnection(&ec2.DeleteVpnConnectionInput{
VpnConnectionId: aws.String(d.Id()),
})
if err != nil {
if ec2err, ok := err.(awserr.Error); ok && ec2err.Code() == "InvalidVpnConnectionID.NotFound" {
d.SetId("")
return nil
} else {
log.Printf("[ERROR] Error deleting VPN connection: %s", err)
return err
}
}
// These things can take quite a while to tear themselves down and any
// attempt to modify resources they reference (e.g. CustomerGateways or
// VPN Gateways) before deletion will result in an error. Furthermore,
// they don't just disappear. The go into "deleted" state. We need to
// wait to ensure any other modifications the user might make to their
// VPC stack can safely run.
stateConf := &resource.StateChangeConf{
Pending: []string{"deleting"},
Target: []string{"deleted"},
Refresh: vpnConnectionRefreshFunc(conn, d.Id()),
Timeout: 30 * time.Minute,
Delay: 10 * time.Second,
MinTimeout: 10 * time.Second,
}
_, stateErr := stateConf.WaitForState()
if stateErr != nil {
return fmt.Errorf(
"Error waiting for VPN connection (%s) to delete: %s", d.Id(), err)
}
return nil
}
// routesToMapList turns the list of routes into a list of maps.
func routesToMapList(routes []*ec2.VpnStaticRoute) []map[string]interface{} {
result := make([]map[string]interface{}, 0, len(routes))
for _, r := range routes {
staticRoute := make(map[string]interface{})
staticRoute["destination_cidr_block"] = *r.DestinationCidrBlock
staticRoute["state"] = *r.State
if r.Source != nil {
staticRoute["source"] = *r.Source
}
result = append(result, staticRoute)
}
return result
}
// telemetryToMapList turns the VGW telemetry into a list of maps.
func telemetryToMapList(telemetry []*ec2.VgwTelemetry) []map[string]interface{} {
result := make([]map[string]interface{}, 0, len(telemetry))
for _, t := range telemetry {
vgw := make(map[string]interface{})
vgw["accepted_route_count"] = *t.AcceptedRouteCount
vgw["outside_ip_address"] = *t.OutsideIpAddress
vgw["status"] = *t.Status
vgw["status_message"] = *t.StatusMessage
// LastStatusChange is a time.Time(). Convert it into a string
// so it can be handled by schema's type system.
vgw["last_status_change"] = t.LastStatusChange.String()
result = append(result, vgw)
}
return result
}
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func xmlConfigToTunnelInfo(xmlConfig string) TunnelInfo {
var vpnConfig XmlVpnConnectionConfig
xml.Unmarshal([]byte(xmlConfig), &vpnConfig)
// don't expect consistent ordering from the XML
sort.Sort(vpnConfig)
tunnelInfo := TunnelInfo{
Tunnel1Address: vpnConfig.Tunnels[0].OutsideAddress,
Tunnel1PreSharedKey: vpnConfig.Tunnels[0].PreSharedKey,
Tunnel2Address: vpnConfig.Tunnels[1].OutsideAddress,
Tunnel2PreSharedKey: vpnConfig.Tunnels[1].PreSharedKey,
}
return tunnelInfo
}