Terraform plugin private IP and logicalID allocation (#395)

Signed-off-by: Nicolas Degory <[email protected]>

Author: ndegory

examples/instance/terraform/plugin.go

@@ -389,6 +389,20 @@ func (p *plugin) Provision(spec instance.Spec) (*instance.ID, error) {
 			m["LogicalID"] = string(*spec.LogicalID)
 		}
 	}
+	switch properties.Type {
+	case "aws_instance":
+		if p, exists := properties.Value["private_ip"]; exists {
+			if p == "INSTANCE_LOGICAL_ID" {
+				if spec.LogicalID != nil {
+					// set private IP to logical ID
+					properties.Value["private_ip"] = string(*spec.LogicalID)
+				} else {
+					// reset private IP (the tag is not relevant in this context)
+					delete(properties.Value, "private_ip")
+				}
+			}
+		}
+	}
 
 	// merge the inits
 	switch properties.Type {

examples/instance/terraform/plugin_test.go

@@ -48,6 +48,7 @@ func TestUsage(t *testing.T) {
             "key_name": "PUBKEY",
             "vpc_security_group_ids" : ["${aws_security_group.default.id}"],
             "subnet_id": "${aws_subnet.default.id}",
+            "private_ip": "INSTANCE_LOGICAL_ID",
             "tags" :  {
                 "Name" : "web4",
                 "InstancePlugin" : "terraform"