Class: Chef::Application::DeployApplication

Inherits:
Chef::Application
  • Object
show all
Defined in:
lib/chef-deploy-application/application.rb

Constant Summary collapse

SELF_PIPE =

Mimic self_pipe sleep from Unicorn to capture signals safely

[]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ DeployApplication

Returns a new instance of DeployApplication.



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# File 'lib/chef-deploy-application/application.rb', line 102

def initialize
  super

  @apps = []
  @chef_client = nil
  @chef_client_json = nil
end

Instance Attribute Details

#chef_client_json ⇒ Object (readonly)

Returns the value of attribute chef_client_json.



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# File 'lib/chef-deploy-application/application.rb', line 100

def chef_client_json
  @chef_client_json
end

Instance Method Details

#configure_chef ⇒ Object 



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# File 'lib/chef-deploy-application/application.rb', line 152

def configure_chef
  @apps = parse_options

  begin
    case config[:config_file]
    when /^(http|https):\/\//
      Chef::REST.new("", nil, nil).fetch(config[:config_file]) { |f| apply_config(f.path) }
    else
      ::File::open(config[:config_file]) { |f| apply_config(f.path) }
    end
  rescue SocketError => error
    Chef::Application.fatal!("Error getting config file #{Chef::Config[:config_file]}", 2)
  rescue Exception => error
    Chef::Log.warn("*****************************************")
    Chef::Log.warn("Can not find config file: #{config[:config_file]}, using defaults.")
    Chef::Log.warn("#{error.message}")
    Chef::Log.warn("*****************************************")

    Chef::Config.merge!(config)
  end

end

#configure_logging ⇒ Object 



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# File 'lib/chef-deploy-application/application.rb', line 175

def configure_logging
  super
  Mixlib::Authentication::Log.use_log_devices( Chef::Log )
  Ohai::Log.use_log_devices( Chef::Log )
end

#reconfigure ⇒ Object

Reconfigure the chef client Re-open the JSON attributes and load them into the node



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# File 'lib/chef-deploy-application/application.rb', line 112

def reconfigure
  super

  Chef::Config[:chef_server_url] = config[:chef_server_url] if config.has_key? :chef_server_url
  unless Chef::Config[:exception_handlers].any? {|h| Chef::Handler::ErrorReport === h}
    Chef::Config[:exception_handlers] << Chef::Handler::ErrorReport.new
  end

  # Run chef once and exit
  Chef::Config[:interval] = nil
  Chef::Config[:splay] = nil

  if Chef::Config[:json_attribs]
    begin
      json_io = case Chef::Config[:json_attribs]
                when /^(http|https):\/\//
                  @rest = Chef::REST.new(Chef::Config[:json_attribs], nil, nil)
                  @rest.get_rest(Chef::Config[:json_attribs], true).open
                else
                  open(Chef::Config[:json_attribs])
                end
    rescue SocketError => error
      Chef::Application.fatal!("I cannot connect to #{Chef::Config[:json_attribs]}", 2)
    rescue Errno::ENOENT => error
      Chef::Application.fatal!("I cannot find #{Chef::Config[:json_attribs]}", 2)
    rescue Errno::EACCES => error
      Chef::Application.fatal!("Permissions are incorrect on #{Chef::Config[:json_attribs]}. Please chmod a+r #{Chef::Config[:json_attribs]}", 2)
    rescue Exception => error
      Chef::Application.fatal!("Got an unexpected error reading #{Chef::Config[:json_attribs]}: #{error.message}", 2)
    end

    begin
      @chef_client_json = Chef::JSONCompat.from_json(json_io.read)
      json_io.close unless json_io.closed?
    rescue JSON::ParserError => error
      Chef::Application.fatal!("Could not parse the provided JSON file (#{Chef::Config[:json_attribs]})!: " + error.message, 2)
    end
  end
end

#run_application ⇒ Object

Run the chef client, optionally daemonizing or looping at intervals.



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# File 'lib/chef-deploy-application/application.rb', line 186

def run_application
  if no_app_name_given?
    puts "You must provide the name of an application to deploy."
    exit 1
  end

  begin
    Chef::Log.info("*** Chef #{Chef::VERSION} ***")

    # Make sure the client knows this is not chef solo
    Chef::Config[:solo] = false

    # Rebuild node
    client = Chef::Client.new
    client.run_ohai
    client.register
    client.build_node


    # Shorten node inspection
    node = client.node
    def node.inspect
      "<Chef::Node:0x#{self.object_id.to_s(16)} @name=\"#{self.name}\">"
    end

    # Rebuild context
    run_status = Chef::RunStatus.new(node)
    Chef::Cookbook::FileVendor.on_create { |manifest| Chef::Cookbook::RemoteFileVendor.new(manifest, Chef::REST.new(Chef::Config[:server_url])) }
    cookbook_hash = client.sync_cookbooks
    cookbooks = Chef::CookbookCollection.new(cookbook_hash)

    run_context = Chef::RunContext.new(node, cookbooks)
    run_context.load(Chef::RunList::RunListExpansionFromAPI.new(node.chef_environment, []))
    run_status.run_context = run_context

    # Merge json
    node.consume_attributes(@chef_client_json) if @chef_client_json

    # Setup the recipe
    app_name = application_name
    recipe = Chef::Recipe.new(nil, nil, run_context)
    recipe.instance_eval do
      # Run the applications cookbook
      node.run_state[:seen_recipes].delete(app_name)
      include_recipe app_name
      
      app = search(:apps, "id:#{app_name}").first
      raise "Cannot find an application named #{app_name}" unless app

      server_roles = (app["server_roles"] & node.run_list.roles)
      if server_roles.empty?
        Chef::Log.info("None of this server's roles match the app's server_roles. Double-check the server_roles configured in the app's data bag.")
      else
        server_roles.each do |app_role|
          app["type"][app_role].each do |thing|
            recipe_name = "application::#{thing}"
            node.run_state[:current_app] = app
            node.run_state[:seen_recipes].delete(recipe_name)
            include_recipe recipe_name
          end
        end
      end

      node.run_state.delete(:current_app)
    end


    # Run the recipe
    run_status.start_clock
    Chef::Runner.new(run_context).converge

    run_status.stop_clock
    Chef::Log.info("Chef Deploy complete in #{run_status.elapsed_time} seconds")

    Chef::Application.exit! "Exiting", 0
  rescue SystemExit => e
    raise
  rescue Exception => e
    Chef::Application.debug_stacktrace(e)
    Chef::Application.fatal!("#{e.class}: #{e.message}", 1)
  end
end

#setup_application ⇒ Object 



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# File 'lib/chef-deploy-application/application.rb', line 181

def setup_application
  Chef::Daemon.change_privilege
end