Question

以下ddl

action 'ant', :description => "Runs ant in the application directory" do
  input :application,
      :prompt      => "Application(s)",
      :description => "Application's instance name(s)",
      :type        => :string,
      :validation  => '^[a-z0-9_,\-]+$',
      :maxlength   => 500,
      :optional    => false

可以在代理内部使用

来获取命令行参数application

  # entry point for the ant target
  action 'ant' do
    # find eligible applications
    applications = request[:application].split(',').select{|a| valid_application?(a) }

可以使用mco <agentname> -a applicationname1,applicationname2启动命令命令，依此类推。发出mco <agentname> --help给了我：

$ mco ehyp --help
Manage an <internal> application
Application Options
    -a, --application APPLICATION    Application to manage

我找不到-a或--application和request[:application]之间的“链接”。它在哪里定义了如何解释这些命令行开关？

Answer 1

在MCollective::Application中定义了它：

option :application,
     :description => 'Application to manage',
     :arguments   => ['-a', '--application APPLICATION'],
     :required    => true

option :destination,
     :description => 'Ant target ("destination") to call',
     :arguments   => ['-d', '--destination TARGET'],
     :required    => true

mcollective agent参数定义

1 个答案: