################################################################################
# Copyright (c) 2013 Wind River Systems, Inc.
#
# SPDX-License-Identifier: Apache-2.0
#
################################################################################
#
# Objective:
#    Demonstrate constructing a server using a newly created subnet
#    Shows two scenarios
#      Scenario A: network, subnets and ports are created explicitly for the
#        servers. This scenario supports selecting a subnet through the use of
#        a port
#      Scenario B: network and subnets are created and only network is
#       specified for the server. This scenario does not support selecting
#       which subnet is selected but will not allow booting unless at least one
#       subnet exists.
#
# Pre-Reqs:
#    A glance image called: wrl6
#    A nova flavor called:  m1.small
#
# Mandatory Template Parameters:
#    None
#
# Tenant Considerations:
#    An admin only activity
#
# Sample CLI syntax:
#    heat stack-create -f Networking_and_Servers.yaml STACK
#
# Expected Outcome:
#  new networks, subnets, ports and servers
#     neutron net-list
#     neutron subnet-list
#     neutron port-list
#     nova list
# servers A1 and A2 will be on separate subnets
# servers B1 and B2 will typically be on the same subnet
#
################################################################################
heat_template_version: 2015-04-30

description: >
    Demonstrate creating a network and subnetwork to launch a server

parameters:

    NETWORK_PREFIX:
        type: string
        description: "The prefix for each newly created network"
        default: "network"

    SERVER_PREFIX:
        type: string
        description: "The prefix for each newly created server"
        default: "server"

    IMAGE:
        type: string
        description: "The name of the glance image"
        default: wrl6
        constraints:
            - custom_constraint: glance.image

    FLAVOR:
        type: string
        description: "The name of the flavor to use"
        default: m1.small
        constraints:
            - custom_constraint: nova.flavor

    CIDR1:
        type: string
        description: "CIDR of subnet A1"
        default: "192.168.110.0/24"

    CIDR2:
        type: string
        description: "CIDR of subnet A2"
        default: "192.168.120.0/24"

    CIDR3:
        type: string
        description: "CIDR of subnet B1"
        default: "192.168.130.0/24"

    CIDR4:
        type: string
        description: "CIDR of subnet B2"
        default: "192.168.140.0/24"

resources:

    ################
    # Scenario 1   #
    ################
    A_Network:
        type: "OS::Neutron::Net"
        properties:
            name:
                list_join: [ "-", [{ get_param: NETWORK_PREFIX}, "A"]]

    A_Subnet_1:
        type: "OS::Neutron::Subnet"
        properties:
            name:
                list_join:
                    - "-"
                    - [{ get_param: NETWORK_PREFIX }, "subnet", "A", "1"]

            network_id: { get_resource: A_Network }
            cidr: { get_param: CIDR1 }
            enable_dhcp: "True"

    A_Subnet_2:
        type: "OS::Neutron::Subnet"
        properties:
            name:
                list_join:
                    - "-"
                    - [{ get_param: NETWORK_PREFIX }, "subnet", "A", "2"]
            network_id: { get_resource: A_Network }
            cidr: { get_param: CIDR2 }
            enable_dhcp: "True"

    A_Port_1:
        type: OS::Neutron::Port
        properties:
            network_id: { get_resource: A_Network }
            fixed_ips:
                - subnet_id: { get_resource: A_Subnet_1 }

    A_Port_2:
        type: OS::Neutron::Port
        properties:
            network_id: { get_resource: A_Network }
            fixed_ips:
                - subnet_id: { get_resource: A_Subnet_2 }

    A_Server_1:
        type: "OS::Nova::Server"
        properties:
            name:
                list_join: [ "-", [{ get_param: SERVER_PREFIX}, "A", "1"]]
            image: { get_param: IMAGE }
            flavor: { get_param: FLAVOR }
            networks:
                - port: { get_resource: A_Port_1 }

    A_Server_2:
        type: "OS::Nova::Server"
        properties:
            name:
                list_join: [ "-", [{ get_param: SERVER_PREFIX}, "A", "2"]]
            image: { get_param: IMAGE }
            flavor: { get_param: FLAVOR }
            networks:
                - port: { get_resource: A_Port_2 }

    ################
    # Scenario 2   #
    ################
    B_Network:
        type: "OS::Neutron::Net"
        properties:
            name: { list_join: [ "-", [{ get_param: NETWORK_PREFIX}, "B"]]}

    B_Subnet_1:
        type: "OS::Neutron::Subnet"
        properties:
            name:
                list_join:
                    - "-"
                    - [{ get_param: NETWORK_PREFIX }, "subnet", "B", "1"]
            network_id: { get_resource: B_Network }
            cidr: { get_param: CIDR3 }
            enable_dhcp: "True"

    B_Subnet_2:
        type: "OS::Neutron::Subnet"
        properties:
            name:
                list_join:
                    - "-"
                    - [{ get_param: NETWORK_PREFIX }, "subnet", "B", "2"]
            network_id: { get_resource: B_Network }
            cidr: { get_param: CIDR4 }
            enable_dhcp: "True"

    # This server will use whichever B_Network subnet exists.
    # It delays creation until B_Subnet_1 exists
    # If B_Subnet_2 also exists, it may choose it
    B_Server_1:
        type: "OS::Nova::Server"
        depends_on: B_Subnet_1
        properties:
            name:
                list_join: [ "-", [{ get_param: SERVER_PREFIX}, "B", "1"]]
            image: { get_param: IMAGE }
            flavor: { get_param: FLAVOR }
            networks:
                - network: { get_resource: B_Network }

    # This server will use whichever B_Network subnet exists.
    # It delays creation until B_Subnet_2 exists
    # If B_Subnet_1 also exists, it may choose it
    B_Server_2:
        type: "OS::Nova::Server"
        depends_on: B_Subnet_2
        properties:
            name:
                list_join: [ "-", [{ get_param: SERVER_PREFIX}, "B", "2"]]
            image: { get_param: IMAGE }
            flavor: { get_param: FLAVOR }
            networks:
                - network: { get_resource: B_Network }