{
    "variable": {
        "foo": {
            "default": "bar",
            "description": "bar"
        }
    },

    "provider": {
        "aws": {
            "access_key": "foo",
            "secret_key": "bar"
        },

        "do": {
            "api_key": "${var.foo}"
        }
    },

    "resource": {
        "aws_instance": {
            "db": {
                "security_groups": ["${aws_security_group.firewall.*.id}"],
                "VPC": "foo",
                "depends_on": ["aws_instance.web"]
            },

            "web": {
                "ami": "${var.foo}",
                "security_groups": [
                    "foo",
                    "${aws_security_group.firewall.foo}"
                ],
                "network_interface": {
                    "device_index": 0,
                    "description": "Main network interface"
                }
            }
        },

        "aws_security_group": {
            "firewall": {
                "count": 5
            }
        }
    },

    "output": {
        "web_ip": {
            "value": "${aws_instance.web.private_ip}"
        }
    }
}