# DSL version, should appear in the main blueprint.yaml
# and may appear in other imports. In such case, the versions must match
tosca_definitions_version: cloudify_dsl_1_0

imports:
  - http://www.getcloudify.org/spec/cloudify/3.1/types.yaml

node_types:

  haproxy.nodes.Proxy:
    derived_from: cloudify.nodes.ApplicationServer
    properties:
      port:
        description: The port for HAProxy to listen.
        type: integer
        default: 80
      global_maxconn:
        description: Max number of connections at a time.
        type: integer
        default: 256
      mode:
        description: >
          The protocol that will act as a proxy for.
        type: string
        default: http
      timeout_connect:
        description: >
          Set the maximum time to wait for a connection attempt to a 
          server to succeed.
        type: integer
        default: 5000
      timeout_client:
        description: Set the maximum inactivity time on the client side.
        type: integer
        default: 50000
      timeout_server:
        description: Set the maximum inactivity time on the server side.
        type: integer
        default: 50000
      default_backend:
        description: >
          The group name you choose for your backend targets.
      backend_app_port:
        description: >
          The port that your application listens on.
          (This is the port that you will open on your backend application servers.)
        type: integer
        default: 8000
      backend_max_conn:
        description: >
          The backend max connectons.
        default: 32
    interfaces:
      cloudify.interfaces.lifecycle:
        create: scripts/haproxy/install-ubuntu.sh
        configure: scripts/haproxy/configure.py
        start: scripts/haproxy/start-ubuntu.sh
        stop: scripts/haproxy/stop-ubuntu.sh

relationships:
  haproxy_connected_to_vm:
    derived_from: cloudify.relationships.connected_to
    source_interfaces:
      cloudify.interfaces.relationship_lifecycle:
        preconfigure:
          implementation: scripts/haproxy/preconfigure.py
          inputs:
            backend_address:
              description: >
                The internal address of a virtual machine node
                that contains your application. This is a runtime property
                of the target node of this relationship.
              default: { get_attribute: [ TARGET, ip ] }
            port:
              description: >
                The port on your virtual machine
                that listens for connections to your application.
              default: { get_property: [ SOURCE, backend_app_port ] }
            maxconn:
              description: >
                That backend's maxconn value. Defined in the
                source node under backend_max_conn.
              default: { get_property: [ SOURCE, backend_max_conn ] }