Class: ForemanAcd::AppConfigurator

Inherits:
Object
  • Object
show all
Defined in:
app/services/foreman_acd/app_configurator.rb

Overview

application instances configurator

Constant Summary collapse

PROXY_NOT_SUPPORTED_LABELS = 
[:not_available, :not_defined].freeze

Instance Method Summary collapse

Constructor Details

#initialize(app_instance) ⇒ AppConfigurator

Returns a new instance of AppConfigurator.



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# File 'app/services/foreman_acd/app_configurator.rb', line 10

def initialize(app_instance)
  @app_instance = app_instance
end

Instance Method Details

#configure ⇒ Object 



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# File 'app/services/foreman_acd/app_configurator.rb', line 14

def configure
  job_input = {}
  job_input['application_name'] = @app_instance.name
  job_input['playbook_id'] = @app_instance.app_definition.ansible_playbook.id
  job_input['playbook_file'] = @app_instance.app_definition.ansible_playbook.playfile

  logger.info("Use inventory to configure #{@app_instance.name} with ansible playbook #{@app_instance.app_definition.ansible_playbook.name}")

  begin
    proxy_hosts = {}
    job = nil
    result = OpenStruct.new

    hosts = @app_instance.foreman_hosts

    # Important: This uses the REX Proxy Selector and not
    #  the AcdProxySelection because the AcdProxySelector
    #  does not find the proxy but only return the given
    #  host. This is required because we want to run the
    #  ansible playbook for a group of hosts on the smart proxy.
    #  So the process need to be:
    #  1. get the proxy which is required to connect to host a,b,c
    #  2. run the job on the proxy
    #  In 2. we need to make sure that REX doesn't try to find the
    #  proxy which is necessary to connect to the proxy
    proxy_selector = RemoteExecutionProxySelector.new
    hosts.each do |h|
      unless h.host
        result.success = false
        result.error = 'App Instance is not deployed'
        return [result, job]
      end
      proxy = proxy_selector.determine_proxy(h.host, 'ACD')
      raise StandardError, 'Proxy without ACD feature' if proxy.nil? || PROXY_NOT_SUPPORTED_LABELS.include?(proxy)
      proxy_hosts[proxy.name] = [] unless proxy_hosts.key?(proxy.name)
      proxy_hosts[proxy.name] << h
      result.success = true
    rescue StandardError => e
      result.success = false
      result.error = "#{e}, Install/Update smart-proxies for ACD"
      return [result, job]
    end

    # TODO: just for testing...
    # proxy_hosts = { Host.first.name => [ Host.first.id] }

    proxy_inventories = {}
    proxy_host_ids =  []
    proxy_hosts.each do |proxy_name, foreman_hosts|
      proxy_inventories[proxy_name] = ForemanAcd::InventoryCreator.new(@app_instance, foreman_hosts).create_inventory

      # Workaround till infrastructure jobs on proxies are possible. See
      #     https://community.theforeman.org/t/infrastructure-roles/22001/33
      #
      # Why do we use 'foreman_hosts.first.host'? REX is 'host-centric'. During
      # job execution, REX will try to find the proxy on which the job should be executed.
      # We throw the first host at REX's feet so that the resolution of the
      # proxy works (... which we have already done above).
      # ACD on the smart proxy side will call the ansible-playbook for ALL hosts
      # which are behind this smart proxy.
      #
      # Additionally, we disable that  AcdProxyProxySelector is used.
      # See required_proxy_selector_for in models/foreman_acd/acd_provider.rb
      proxy_host_ids << foreman_hosts.first.host.id

      # Actually, we want this:
      # proxy_host_ids << Host.find_by(:name => proxy_name).id
    end

    job_input['inventory'] = YAML.dump(proxy_inventories)
    composer = JobInvocationComposer.for_feature(
      :run_acd_ansible_playbook,
      proxy_host_ids,
      job_input.to_hash
    )
    job = composer
  rescue StandardError => e
    result.success = false
    result.error = _('Failed to configure hosts: %{err_msg}' % { :err_msg => e.message })
    logger.error('Failed to configure hosts: %{err_class}: %{err_msg}' % { :err_class => e.class, :err_msg => e.message })
    logger.error(e.backtrace.join("\n"))
    job = nil
  end
  [result, job]
end