################################################################################
# Copyright (c) 2017 Wind River Systems, Inc.
#
# SPDX-License-Identifier: Apache-2.0
#
################################################################################
#
# Objectives:
#   Boot a nova server with userdata
#   Use stack-update to rebuild the server with new userdata
#
# Pre-Reqs:
#   A keypair called:  controller-0  (nova keypair-list)
#   A nova flavor called: m1.tiny (nova flavor-list)
#   A glance image called: wrl6  (glance image-list)
#   A networks called: private-net0 (neutron net-list)
#
# Mandatory Template Parameters:
#   None
#
# Tenant Considerations:
#    None
#
# Sample CLI syntax:
#    heat stack-create -f UserData.yaml  STACK
#    heat stack-update -f UserData.yaml -P USERDATA="new userdata"  STACK
#
# Expected Outcome:
#   3 new nova instances called:  userdata-vm, userdata-vm_vol,
#                                 userdata-vm_vol_v2
#   2 new volumes called: userdata-vol, userdata-vol_v2
#      nova list
#   The stack-update should rebuild the nova VM with new userdata
#   The userdata is base64 encoded attribute: OS-EXT-SRV-ATTR:user_data
#
################################################################################
heat_template_version: 2015-04-30

description: >
   Demonstrate launching an instance with updatable userdata

parameters:

    VM_NAME:
        description: name for the new VM
        type: string
        default: userdata-vm

    VM_VOL_NAME:
        description: name for the new VM
        type: string
        default: userdata-vm_vol

    VOL_V1_NAME:
        description: name for the new VM
        type: string
        default: userdata-vol

    VM_VOL_V2_NAME:
        description: name for the new VM
        type: string
        default: userdata-vm_vol_v2

    VOL_V2_NAME:
        description: name for the new VM
        type: string
        default: userdata-vol_v2

    KEYPAIR:
        description: keypair to use. (nova keypair-list)
        type: string
        default: controller-0
        constraints:
            - custom_constraint: nova.keypair

    KEYPAIR_ADMIN_USER:
        type: string
        description: Name of user account to inject ssh keys from keypair
        default: 'ec2-user'

    FLAVOR:
        description: Nova flavor to use.   (nova flavor-list)
        type: string
        default: m1.tiny
        constraints:
            - custom_constraint: nova.flavor

    IMAGE:
        description: Glance image to use (glance image-list)
        type: string
        default: wrl6
        constraints:
            - custom_constraint: glance.image

    PRIVATE_NET:
        description: private network to use (neutron net-list)
        type: string
        default: private-net0
        constraints:
            - custom_constraint: neutron.network

    USERDATA:
        description: Userdata for the new VM
        type: string
        default: "Sample Userdata"

resources:

    #####################
    ## Host with image as boot source
    ######################
    RAW_Server:
        type: OS::Nova::Server
        properties:
            admin_user: { get_param: KEYPAIR_ADMIN_USER }
            flavor: { get_param: FLAVOR }
            image: { get_param: IMAGE }
            key_name: { get_param: KEYPAIR }
            name: { get_param: VM_NAME }
            networks:
                - network: { get_param: PRIVATE_NET }
            user_data: { get_param: USERDATA }
            user_data_format: RAW
            user_data_update_policy: REBUILD

    #####################
    ## Host with volume as boot source within the block_device_mapping field
    ######################
    RAW_vol:
        type: OS::Cinder::Volume
        properties:
            name: { get_param: VOL_V1_NAME }
            image: { get_param: IMAGE }
            size: 2

    RAW_Server_vol:
        type: OS::Nova::Server
        properties:
            admin_user: { get_param: KEYPAIR_ADMIN_USER }
            flavor: { get_param: FLAVOR }
            block_device_mapping:
                - device_name: vda
                  volume_id: { get_resource: RAW_vol }
            key_name: { get_param: KEYPAIR }
            name: { get_param: VM_VOL_NAME }
            networks:
                - network: { get_param: PRIVATE_NET }
            user_data: { get_param: USERDATA }
            user_data_format: RAW
            user_data_update_policy: REBUILD

    #####################
    ## Host with vol as boot source within the block_device_mapping_v2 field
    ######################
    RAW_vol_V2:
        type: OS::Cinder::Volume
        properties:
            name: { get_param: VOL_V2_NAME }
            image: { get_param: IMAGE }
            size: 2

    RAW_Server_vol_V2:
        type: OS::Nova::Server
        properties:
            admin_user: { get_param: KEYPAIR_ADMIN_USER }
            flavor: { get_param: FLAVOR }
            block_device_mapping_v2:
                - {device_name: vda, volume_id: { get_resource: RAW_vol_V2 } }
            key_name: { get_param: KEYPAIR }
            name: { get_param: VM_VOL_V2_NAME }
            networks:
                - network: { get_param: PRIVATE_NET }
            user_data: { get_param: USERDATA }
            user_data_format: RAW
            user_data_update_policy: REBUILD