#
# Class to serve barbican with apache mod_wsgi in place of barbican service
#
# Serving barbican from apache is the recommended way to go for production
# systems as the current barbican implementation is not multi-processor aware,
# thus limiting the performance for concurrent accesses.
#
# When using this class you should disable your barbican service.
#
# == Parameters
#
#   [*servername*]
#     The servername for the virtualhost.
#     Optional. Defaults to $::fqdn
#
#   [*public_port*]
#     The public port.
#     Optional. Defaults to 9311
#
#   [*bind_host*]
#     The host/ip address Apache will listen on.
#     Optional. Defaults to undef (listen on all ip addresses).
#
#   [*public_path*]
#     The prefix for the public endpoint.
#     Optional. Defaults to '/'
#
#   [*ssl*]
#     Use ssl ? (boolean)
#     Optional. Defaults to true
#
#   [*workers*]
#     Number of WSGI workers to spawn.
#     Optional. Defaults to 1
#
#   [*ssl_cert*]
#     (optional) Path to SSL certificate
#     Default to apache::vhost 'ssl_*' defaults.
#
#   [*ssl_key*]
#     (optional) Path to SSL key
#     Default to apache::vhost 'ssl_*' defaults.
#
#   [*ssl_chain*]
#     (optional) SSL chain
#     Default to apache::vhost 'ssl_*' defaults.
#
#   [*ssl_ca*]
#     (optional) Path to SSL certificate authority
#     Default to apache::vhost 'ssl_*' defaults.
#
#   [*ssl_crl_path*]
#     (optional) Path to SSL certificate revocation list
#     Default to apache::vhost 'ssl_*' defaults.
#
#   [*ssl_crl*]
#     (optional) SSL certificate revocation list name
#     Default to apache::vhost 'ssl_*' defaults.
#
#   [*ssl_certs_dir*]
#     apache::vhost ssl parameters.
#     Optional. Default to apache::vhost 'ssl_*' defaults.
#
#   [*priority*]
#     (optional) The priority for the vhost.
#     Defaults to '10'
#
#   [*threads*]
#     (optional) The number of threads for the vhost.
#     Defaults to $::os_workers
#
# == Dependencies
#
#   requires Class['apache'] & Class['barbican']
#
# == Examples
#
#   include apache
#
#   class { 'barbican::wsgi::apache': }
#
# == Authors
#
#   Ade Lee <alee@redhat.com>
#
# == Copyright
#
#   Copyright 2015 Red Hat Inc. <licensing@redhat.com>
#
class barbican::wsgi::apache (
  $servername    = $::fqdn,
  $public_port   = 9311,
  $bind_host     = undef,
  $public_path   = '/',
  $ssl           = true,
  $workers       = 1,
  $ssl_cert      = undef,
  $ssl_key       = undef,
  $ssl_chain     = undef,
  $ssl_ca        = undef,
  $ssl_crl_path  = undef,
  $ssl_crl       = undef,
  $ssl_certs_dir = undef,
  $threads       = $::os_workers,
  $priority      = '10',
) {

  include ::barbican::deps
  include ::barbican::params
  include ::apache
  include ::apache::mod::wsgi
  if $ssl {
    include ::apache::mod::ssl
  }

  Service['httpd'] -> Keystone_endpoint <| |>
  Service['httpd'] -> Keystone_role <| |>
  Service['httpd'] -> Keystone_service <| |>
  Service['httpd'] -> Keystone_tenant <| |>
  Service['httpd'] -> Keystone_user <| |>
  Service['httpd'] -> Keystone_user_role <| |>

  file { $::barbican::params::httpd_config_file:
    ensure  => present,
    content => "#
# This file has been cleaned by Puppet.
#
# OpenStack Horizon configuration has been moved to:
# - ${priority}-barbican_wsgi_main.conf
#",
  }

  Package<| tag == 'barbican-api' |> -> File[$::barbican::params::httpd_config_file]
  File[$::barbican::params::httpd_config_file] ~> Service['httpd']

  ::openstacklib::wsgi::apache { 'barbican_wsgi_main':
    bind_host           => $bind_host,
    bind_port           => $public_port,
    group               => 'barbican',
    path                => $public_path,
    priority            => $priority,
    servername          => $servername,
    ssl                 => $ssl,
    ssl_ca              => $ssl_ca,
    ssl_cert            => $ssl_cert,
    ssl_certs_dir       => $ssl_certs_dir,
    ssl_chain           => $ssl_chain,
    ssl_crl             => $ssl_crl,
    ssl_crl_path        => $ssl_crl_path,
    ssl_key             => $ssl_key,
    threads             => $threads,
    user                => 'barbican',
    workers             => $workers,
    wsgi_daemon_process => 'barbican-api',
    wsgi_process_group  => 'barbican-api',
    wsgi_script_dir     => $::barbican::params::barbican_wsgi_script_path,
    wsgi_script_file    => 'main',
    wsgi_script_source  => $::barbican::params::barbican_wsgi_script_source,
  }
}