Class: Exec::NodeDetach

Inherits:
ExecutableCommand show all
Defined in:
lib/exec/node_detach.rb

Overview

Allows the user to detach node’s of crowbar server.

Author:

  • mbretaud

Instance Attribute Summary

Attributes inherited from ExecutableCommand

#argv, #command_name, #logger, #options, #stderr, #stdin, #stdout, #values

Instance Method Summary collapse

Methods inherited from ExecutableCommand

#check_parameters, #create_logger, #run

Constructor Details

#initialize(argv, stdin, stdout, stderr, command_name) ⇒ NodeDetach

Note:

Overrides default constructor by passing CustomCommandOption to super().

Default constructor of the class.

Author:

  • mbretaud



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# File 'lib/exec/node_detach.rb', line 20

def initialize(argv, stdin, stdout, stderr, command_name)
  super(argv, stdin, stdout, stderr, command_name)
end

Instance Method Details

#detach_node(node_name) ⇒ Object

Detach a node from the server Crowbar

Parameters:

  • node_name (String) —

    the name node

Raises:

  • NodeError If the node don’t exists or is not Ready

Author:

  • mbretaud



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# File 'lib/exec/node_detach.rb', line 44

def detach_node(node_name)
  @logger.info("Exec::NodeDetach   detach_node(#{node_name})")
  Color::print_log("NONE", "Detach the node '#{node_name}'...", @stdout)

  output = ""
  unless node_name.nil?
    if if_node_exist(node_name, "Ready")
      cmd = Command::NodeDetach.new(node_name)
      cmd.exec
      #output += "Detach the node '#{node_name}'.\n"
    else
      raise NodeDetachError.new("The node '#{node_name}' doesn't exists or is not 'Ready'.")
    end
  else
    raise NodeDetachError.new("The node name is nil.")
  end

  Color::echo_ok(@stdout)
  @logger.info(output)
  if !output.empty? && output.length > 1
    @stdout.print output
  else
    @logger.info("Exec::NodeDetach   No machines available.")
    @stdout.printf_red "No machines available.\n"
  end
end

#exec ⇒ Object (private)

The execution of the command.

Author:

  • mbretaud



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# File 'lib/exec/node_detach.rb', line 34

def exec()
  @logger.info("Exec::NodeDetach   Executing NodeDetach")
  detach_node(@values['node'])
end

#if_node_exist(node_name, status) ⇒ Boolean (private)

TODO:

refactor in a library

Returns true if the node exists, false else.

Parameters:

  • node_name (String) —

    the name node

Returns:

  • (Boolean) —

    true if the node exists, false else

Author:

  • mbretaud



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# File 'lib/exec/node_detach.rb', line 76

def if_node_exist(node_name, status)
  # Retrieves the list of nodes.
  begin
    @logger.info("Exec::NodeDetach   Getting the nodes list.")
    cmd = Command::CrowbarNodeList.new(@logger, status)
    list_nodes = cmd.exec
  rescue => e
    raise NodeListError.new("Retrieves the list of nodes with the status '#{status}'..")
  end

  if !list_nodes.nil? && list_nodes.length > 0
    list_nodes.each { |node|
      if node_name == node.split(" ").at(0).strip.to_s()
        return true
      end
    }
  end

  return false
end

#set_options ⇒ Object (private)

Parse and check the parameters of the function.

Author:

  • mbretaud



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# File 'lib/exec/node_detach.rb', line 27

def set_options
  @logger.info("Exec::NodeDetach   Setting options")
  @options.add_option("n", "node", "The Node name that will be Destroy.", true, true, method(:check_crowbar_node_name))
end