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resource_vpn_connection_route.go
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resource_vpn_connection_route.go
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package aws
import (
"fmt"
"log"
"strings"
"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/schema"
)
func resourceAwsVpnConnectionRoute() *schema.Resource {
return &schema.Resource{
// You can't update a route. You can just delete one and make
// a new one.
Create: resourceAwsVpnConnectionRouteCreate,
Read: resourceAwsVpnConnectionRouteRead,
Delete: resourceAwsVpnConnectionRouteDelete,
Schema: map[string]*schema.Schema{
"destination_cidr_block": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
"vpn_connection_id": &schema.Schema{
Type: schema.TypeString,
Required: true,
ForceNew: true,
},
},
}
}
func resourceAwsVpnConnectionRouteCreate(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).ec2conn
createOpts := &ec2.CreateVpnConnectionRouteInput{
DestinationCidrBlock: aws.String(d.Get("destination_cidr_block").(string)),
VpnConnectionId: aws.String(d.Get("vpn_connection_id").(string)),
}
// Create the route.
log.Printf("[DEBUG] Creating VPN connection route")
_, err := conn.CreateVpnConnectionRoute(createOpts)
if err != nil {
return fmt.Errorf("Error creating VPN connection route: %s", err)
}
// Store the ID by the only two data we have available to us.
d.SetId(fmt.Sprintf("%s:%s", *createOpts.DestinationCidrBlock, *createOpts.VpnConnectionId))
return resourceAwsVpnConnectionRouteRead(d, meta)
}
func resourceAwsVpnConnectionRouteRead(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).ec2conn
cidrBlock, vpnConnectionId := resourceAwsVpnConnectionRouteParseId(d.Id())
routeFilters := []*ec2.Filter{
&ec2.Filter{
Name: aws.String("route.destination-cidr-block"),
Values: []*string{aws.String(cidrBlock)},
},
&ec2.Filter{
Name: aws.String("vpn-connection-id"),
Values: []*string{aws.String(vpnConnectionId)},
},
}
// Technically, we know everything there is to know about the route
// from its ID, but we still want to catch cases where it changes
// outside of terraform and results in a stale state file. Hence,
// conduct a read.
resp, err := conn.DescribeVpnConnections(&ec2.DescribeVpnConnectionsInput{
Filters: routeFilters,
})
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 route: %s", err)
return err
}
}
if resp == nil || len(resp.VpnConnections) == 0 {
// This is kind of a weird edge case. I'd rather return an error
// instead of just blindly setting the ID to ""... since I don't know
// what might cause this.
return fmt.Errorf("No VPN connections returned")
}
vpnConnection := resp.VpnConnections[0]
var found bool
for _, r := range vpnConnection.Routes {
if *r.DestinationCidrBlock == cidrBlock {
d.Set("destination_cidr_block", *r.DestinationCidrBlock)
d.Set("vpn_connection_id", *vpnConnection.VpnConnectionId)
found = true
}
}
if !found {
// Something other than terraform eliminated the route.
d.SetId("")
}
return nil
}
func resourceAwsVpnConnectionRouteDelete(d *schema.ResourceData, meta interface{}) error {
conn := meta.(*AWSClient).ec2conn
_, err := conn.DeleteVpnConnectionRoute(&ec2.DeleteVpnConnectionRouteInput{
DestinationCidrBlock: aws.String(d.Get("destination_cidr_block").(string)),
VpnConnectionId: aws.String(d.Get("vpn_connection_id").(string)),
})
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 route: %s", err)
return err
}
}
return nil
}
func resourceAwsVpnConnectionRouteParseId(id string) (string, string) {
parts := strings.SplitN(id, ":", 2)
return parts[0], parts[1]
}