From 910469ddee2dfc1743dfeaed5af3b95d8db72af8 Mon Sep 17 00:00:00 2001
From: Hany Fahim <hany@vmfarms.com>
Date: Fri, 2 Oct 2015 20:54:07 -0400
Subject: [PATCH] Add Source NAT IP parameter

When creating a VPC, CloudStack automatically assigns a source NAT IP
from it's pool. It's handy to have this IP available in Terraform, which
can be used in ACLs for example. This commit adds such support.
---
 .../cloudstack/resource_cloudstack_vpc.go         | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/builtin/providers/cloudstack/resource_cloudstack_vpc.go b/builtin/providers/cloudstack/resource_cloudstack_vpc.go
index 8fe132d94f..1b2ecbf86c 100644
--- a/builtin/providers/cloudstack/resource_cloudstack_vpc.go
+++ b/builtin/providers/cloudstack/resource_cloudstack_vpc.go
@@ -51,6 +51,11 @@ func resourceCloudStackVPC() *schema.Resource {
 				Required: true,
 				ForceNew: true,
 			},
+
+			"source_nat_ip": &schema.Schema{
+				Type:     schema.TypeString,
+				Computed: true,
+			},
 		},
 	}
 }
@@ -133,6 +138,16 @@ func resourceCloudStackVPCRead(d *schema.ResourceData, meta interface{}) error {
 	setValueOrUUID(d, "project", v.Project, v.Projectid)
 	setValueOrUUID(d, "zone", v.Zonename, v.Zoneid)
 
+	// Grab the source NAT IP that CloudStack assigned.
+	p := cs.Address.NewListPublicIpAddressesParams()
+	p.SetVpcid(d.Id())
+	p.SetIssourcenat(true)
+	p.SetProjectid(v.Projectid)
+	l, e := cs.Address.ListPublicIpAddresses(p)
+	if (e == nil) && (l.Count == 1) {
+		d.Set("source_nat_ip", l.PublicIpAddresses[0].Ipaddress)
+	}
+
 	return nil
 }