#This is the environment heat template, compatible with openstack ocata.
heat_template_version: 2017-02-24
description: "Heat template for deploying onap env"
parameters:
  auth_key:
    label: "Auth public key"
    description: "The public key used to authenticate to instances"
    type: string
  node_flavor_name:
    label: "name of node flavor"
    description: "The name of the flavor used to create kubernetes nodes"
    type: string
    constraints:
      - custom_constraint: nova.flavor
        description: "need to specify a valid flavor"
  infra_flavor_name:
    label: "name of infra flavor"
    description: "flavor used to create infra instance"
    type: string
    constraints:
      - custom_constraint: nova.flavor
        description: "need to specify a valid flavor"
  installer_flavor_name:
    label: "name of installer flavor"
    description: "flavor used to create installer instance"
    type: string
    constraints:
      - custom_constraint: nova.flavor
        description: "need to specify a valid flavor"
  image_name:
    label: "image name"
    description: "name of the image from which to create all instances, should be rhel 7.6 or centos image"
    type: string
    constraints:
      - custom_constraint: glance.image
        description: "must specify a valid image name"
  subnet_cidr:
    label: "private subnet cidr"
    description: "Cidr of a private subnet instances will be connected to"
    type: string
    constraints:
      - custom_constraint: net_cidr
  subnet_range_start:
    label: "subnet dhcp allocation range start"
    description: "Start of range of dhcp allocatable ips on private subnet"
    type: string
    constraints:
      - custom_constraint: ip_addr
  subnet_range_end:
    label: "end of subnet dhcp allocation range"
    description: "End of private subnet's dhcp allocation range"
    type: string
    constraints:
      - custom_constraint: ip_addr
  router_addr:
    label: "ip address of router"
    description: "IP address of the router allowing access to other networks incl. company network"
    type: string
    constraints:
      - custom_constraint: ip_addr
  public_network_name:
    label: "name of the public network"
    description: "Name of the public, internet facing network, also allowing access to company internal hosts"
    type: string
    constraints:
      - custom_constraint: neutron.network
        description: "Must specify a valid network name or id"
  external_subnet_cidr:
    label: "external subnet cidr"
    description: "The CIDR of the external subnet, that should be accessible from instances, even when internet access is cut. Putting 0.0.0.0/0 here means access to internet."
    type: string
    constraints:
      - custom_constraint: net_cidr
  installer_ip:
    label: "floating ip of the installer"
    description: "a pre-allocated floating ip that will be associated with the installer instance"
    type: string
  infra_ip:
    label: "floating ip of the infra"
    description: "a pre-allocated floating ip that will be associated with the infrastructure instance"
    type: string
  node_ip:
    label: "floating ip of the first node"
    description: "a pre-allocated floating ip that will be associated with the first kubernetes node and allow accessing onap"
    type: string
  num_nodes:
    label: "num nodes"
    description: "the number of kubernetes nodes to create, min 1"
    type: number
    constraints:
      - range: { min: 1 }
        description: "must be a positive number"
  use_volume_for_nfs:
    type: boolean
    label: "use volume for nfs storage"
    description: "Indicates whether a cinder volume should be used for nfs storage or not. If not checked, the nfs would be stored in the root disk"
conditions:
  #Condition for nfs volume usage.
  use_volume_for_nfs: { get_param: use_volume_for_nfs }
resources:
  # Security group used to secure access to instances.
  secgroup:
    type: OS::Neutron::SecurityGroup
    properties:
      rules:
        # Egress rule allowing access to external_subnet_cidr.
        - direction: egress
          ethertype: IPv4
          remote_ip_prefix: { get_param: external_subnet_cidr }
        # Ingress rule, allowing also inbound access by external network.
        - direction: ingress
          ethertype: IPv4
          remote_ip_prefix: { get_param: external_subnet_cidr }
        # Allow outbound communication with the internal subnet.
        - direction: egress
          ethertype: IPv4
          remote_ip_prefix: { get_param: subnet_cidr }
        # Allow inbound communication from internal network.
        - direction: ingress
          ethertype: IPv4
          remote_ip_prefix: { get_param: subnet_cidr }
        # Allow outbound access to 169.254.0.0/16, mainly for metadata. We do not need inbound.
        - direction: egress
          ethertype: IPv4
          remote_ip_prefix: 169.254.0.0/16
  #A network that our test environment will be connected to.
  privnet:
    type: OS::Neutron::Net
  #Subnet that instances will live in.
  privsubnet:
    type: OS::Neutron::Subnet
    properties:
      network: { get_resource: privnet }
      cidr: { get_param: subnet_cidr }
      allocation_pools:
        - { start: { get_param: subnet_range_start }, end: { get_param: subnet_range_end } }
      gateway_ip: { get_param: router_addr }
      ip_version: 4
  #A port connected to the private network, taken by router.
  routerport:
    type: OS::Neutron::Port
    properties:
      network: { get_resource: privnet }
      fixed_ips:
        - { subnet: { get_resource: privsubnet }, ip_address: { get_param: router_addr } }
      security_groups: [{ get_resource: secgroup }]
  #This is a router, routing between us and the internet.
  #It has an external gateway to public network.
  router:
    type: OS::Neutron::Router
    properties:
      external_gateway_info:
        network: { get_param: public_network_name }
  #This is a router interface connecting it to our private subnet's router port.
  routercon:
    type: OS::Neutron::RouterInterface
    properties:
      router: { get_resource: router }
      port: { get_resource: routerport }

  #Key used to authenticate to instances as root.
  key:
    type: OS::Nova::KeyPair
    properties:
      name: { get_param: "OS::stack_name" }
      public_key: { get_param: auth_key }
  #Handle to signal about starting up of instances.
  instance_wait_handle:
    type: OS::Heat::WaitConditionHandle
  #Monitor waiting for all instances to start.
  instance_wait:
    type: OS::Heat::WaitCondition
    properties:
      handle: { get_resource: instance_wait_handle }
      timeout: 1200
      count:
        yaql:
          data: { num_nodes: { get_param: num_nodes } }
          #This is number of all nodes + 2 (infra instance and installer)
          expression: "$.data.num_nodes + 2"
  #Affinity Policy - nodes spread onto as many physical machines as possible (aka. .anti-affinity.).
  anti_affinity_group:
   type: OS::Nova::ServerGroup
   properties:
     name: k8s nodes on separate computes
     policies:
      - anti-affinity
  #Resource group to deploy n nodes using node template for each, each node numbered starting from 0.
  nodes:
    type: OS::Heat::ResourceGroup
    properties:
      count: { get_param: num_nodes }
      resource_def:
        type: node.yaml
        properties:
          nodenum: "%index%"
          key_name: { get_resource: key }
          image_name: { get_param: image_name }
          network: { get_resource: privnet }
          subnet: { get_resource: privsubnet }
          flavor_name: { get_param: node_flavor_name }
          notify_command: { get_attr: ["instance_wait_handle", "curl_cli"] }
          security_group: { get_resource: secgroup }
          scheduler_hints:
            group: { get_resource: anti_affinity_group }
    depends_on: [routercon, instance_wait_handle]
  #Nfs storage volume for first node.
  nfs_storage:
    type: OS::Cinder::Volume
    condition: use_volume_for_nfs
    properties:
      name: nfs_storage
      size: 50
  #Attachment of volume to first node.
  nfs_storage_attachment:
    type: OS::Cinder::VolumeAttachment
    condition: use_volume_for_nfs
    properties:
      instance_uuid: { get_attr: [nodes, "resource.0"] }
      volume_id: { get_resource: nfs_storage }
  #Floating ip association for node (first only).
  node_fip_assoc:
    type: OS::Neutron::FloatingIPAssociation
    properties:
      floatingip_id: { get_param: node_ip }
      port_id: { get_attr: ["nodes", "resource.0.port_id"] }
  #Openstack volume used for storing resources.
  resources_storage:
    type: "OS::Cinder::Volume"
    properties:
      name: "resources_storage"
      size: 120
  #Instance representing infrastructure instance, created using subtemplate.
  infra:
    type: "instance.yaml"
    properties:
      instance_name: infra
      network: { get_resource: privnet }
      subnet: { get_resource: privsubnet }
      key_name: { get_resource: key }
      flavor_name: { get_param: infra_flavor_name }
      image_name: { get_param: image_name }
      notify_command: { get_attr: ["instance_wait_handle", "curl_cli"] }
      security_group: { get_resource: secgroup }
      scheduler_hints: {}
    depends_on: [instance_wait_handle]
  #Volume attachment for infra node.
  resources_storage_attachment:
    type: OS::Cinder::VolumeAttachment
    properties:
      volume_id: { get_resource: resources_storage }
      instance_uuid: { get_resource: infra }
  #Floating ip association for infra.
  infra_fip_assoc:
    type: OS::Neutron::FloatingIPAssociation
    properties:
      floatingip_id: { get_param: infra_ip }
      port_id: { get_attr: ["infra", "port_id"] }
  #Small installer vm having access to other instances, used to install onap.
  installer:
    type: "instance.yaml"
    properties:
      instance_name: installer
      image_name: { get_param: image_name }
      flavor_name: { get_param: installer_flavor_name }
      key_name: { get_resource: key }
      network: { get_resource: privnet }
      subnet: { get_resource: privsubnet }
      notify_command: { get_attr: ["instance_wait_handle", "curl_cli"] }
      security_group: { get_resource: secgroup }
      scheduler_hints: {}
    depends_on: instance_wait_handle
  #Floating ip for installer.
  installer_fip_assoc:
    type: OS::Neutron::FloatingIPAssociation
    properties:
      floatingip_id: { get_param: installer_ip }
      port_id: { get_attr: [installer, port_id] }
  #Map of node volumes, taken from volumes output param.
  node_volumes:
    type: OS::Heat::Value
    properties:
      type: json
      #We need yaql transformation to be done on the volume map.
      value:
        yaql:
          data:
            #This is a map of node number to value of "volumes" attribute, that contains
            #a list of volumes written as pairs [volumeid, mountpoint].
            volumes: { get_attr: [nodes, attributes, volumes] }
          #We need yaql expressions to transform node numbers to node names in the form "node0" and similar.
          #However we don't need anything more complicated.
          expression: "$.data.volumes?.items()?.toDict('node'+str($[0]), $[1])"
  #List of infra specific volumes (not a map as above).
  infra_volumes:
    type: OS::Heat::Value
    properties:
      value:
        - [{ get_resource: resources_storage }, "/opt/onap"]
  #Contains node0 specific volume list.
  node0_volumes:
    type: OS::Heat::Value
    properties:
      #Note that it returns an empty list if nfs volume is disabled.
      value:
        if:
          - use_volume_for_nfs
          - - [{ get_resource: nfs_storage }, "/dockerdata-nfs"]
          - []
#Output values
outputs:
  installer_ip:
    value: { get_attr: [installer, ip] }
    description: "Internal ip of installer instance"
  infra_ip:
    value: { get_attr: [infra, ip] }
    description: "Internal ip of infra instance"
  node_ips:
    value: { get_attr: [nodes, ip] }
    description: "Serialized json list of node internal ips starting at node0"
  volumes:
    description: "map of volumes per each instance"
    value:
      #Can do deep merging only with yaql.
      yaql:
        data:
          node_volumes: { get_attr: [node_volumes, value]}
          infra_volumes: { infra: { get_attr: [infra_volumes, value] }}
          node0_volumes: {node0: { get_attr: [node0_volumes, value] }}
        expression: "$.data.node_volumes?.mergeWith($.data.infra_volumes)?.mergeWith($.data.node0_volumes)"