Class: Chef::Provider::Ifconfig

Inherits:
Chef::Provider show all
Includes:
Mixin::Command
Defined in:
lib/chef/provider/ifconfig.rb,
lib/chef/provider/ifconfig/debian.rb,
lib/chef/provider/ifconfig/redhat.rb

Direct Known Subclasses

Debian, Redhat

Defined Under Namespace

Classes: Debian, Redhat

Instance Attribute Summary collapse

Attributes inherited from Chef::Provider

#action, #current_resource, #new_resource, #run_context

Instance Method Summary collapse

Methods included from Mixin::Command

#chdir_or_tmpdir, #handle_command_failures, #output_of_command, #run_command, #run_command_with_systems_locale

Methods included from Mixin::Command::Windows

#popen4

Methods included from Mixin::Command::Unix

#popen4

Methods inherited from Chef::Provider

#action_nothing, #cleanup_after_converge, #converge_by, #cookbook_name, #events, #node, #process_resource_requirements, #requirements, #resource_collection, #resource_updated?, #run_action, #set_updated_status, #whyrun_mode?

Methods included from DSL::Recipe

#method_missing

Methods included from Mixin::ConvertToClassName

#convert_to_class_name, #convert_to_snake_case, #filename_to_qualified_string, #snake_case_basename

Constructor Details

#initialize(new_resource, run_context) ⇒ Ifconfig

Returns a new instance of Ifconfig.



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# File 'lib/chef/provider/ifconfig.rb', line 45

def initialize(new_resource, run_context)
  super(new_resource, run_context)
  @config_template = nil
  @config_path = nil
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method in the class Chef::DSL::Recipe

Instance Attribute Details

#config_path ⇒ Object

Returns the value of attribute config_path.



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# File 'lib/chef/provider/ifconfig.rb', line 43

def config_path
  @config_path
end

#config_template ⇒ Object

Returns the value of attribute config_template.



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# File 'lib/chef/provider/ifconfig.rb', line 42

def config_template
  @config_template
end

Instance Method Details

#action_add ⇒ Object 



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# File 'lib/chef/provider/ifconfig.rb', line 102

def action_add
  # check to see if load_current_resource found interface in ifconfig
  unless @current_resource.inet_addr
    unless @new_resource.device == "lo"
      command = "ifconfig #{@new_resource.device} #{@new_resource.name}"
      command << " netmask #{@new_resource.mask}" if @new_resource.mask
      command << " metric #{@new_resource.metric}" if @new_resource.metric
      command << " mtu #{@new_resource.mtu}" if @new_resource.mtu
    end
    converge_by ("run #{command} to add #{@new_resource}") do
      run_command(
        :command => command
      )
      Chef::Log.info("#{@new_resource} added")
    end
  end

  # Write out the config files
  generate_config
end

#action_delete ⇒ Object 



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# File 'lib/chef/provider/ifconfig.rb', line 143

def action_delete
  # check to see if load_current_resource found the interface
  if @current_resource.device
    command = "ifconfig #{@new_resource.device} down"
    converge_by ("run #{command} to delete #{@new_resource}") do
      run_command(
        :command => command
      )
      delete_config
      Chef::Log.info("#{@new_resource} deleted")
    end
  else
    Chef::Log.debug("#{@new_resource} does not exist - nothing to do")
  end
end

#action_disable ⇒ Object 



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# File 'lib/chef/provider/ifconfig.rb', line 159

def action_disable
  # check to see if load_current_resource found the interface
  # disables, but leaves config files in place.
  if @current_resource.device
    command = "ifconfig #{@new_resource.device} down"
    converge_by ("run #{command} to disable #{@new_resource}") do
      run_command(
        :command => command
      )
      Chef::Log.info("#{@new_resource} disabled")
    end
  else
    Chef::Log.debug("#{@new_resource} does not exist - nothing to do")
  end
end

#action_enable ⇒ Object 



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# File 'lib/chef/provider/ifconfig.rb', line 123

def action_enable
  # check to see if load_current_resource found ifconfig
  # enables, but does not manage config files
  unless @current_resource.inet_addr
    unless @new_resource.device == "lo"
      command = "ifconfig #{@new_resource.device} #{@new_resource.name}"
      command << " netmask #{@new_resource.mask}" if @new_resource.mask
      command << " metric #{@new_resource.metric}" if @new_resource.metric
      command << " mtu #{@new_resource.mtu}" if @new_resource.mtu
    end

    converge_by ("run #{command} to enable #{@new_resource}") do
      run_command(
        :command => command
      )
      Chef::Log.info("#{@new_resource} enabled")
    end
  end
end

#can_generate_config? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/provider/ifconfig.rb', line 175

def can_generate_config?
  ! @config_template.nil? and ! @config_path.nil?
end

#define_resource_requirements ⇒ Object 



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# File 'lib/chef/provider/ifconfig.rb', line 92

def define_resource_requirements 
  requirements.assert(:all_actions) do |a| 
    a.assertion { @status.exitstatus == 0 }
    a.failure_message Chef::Exceptions::Ifconfig, "ifconfig failed - #{@status.inspect}!"
    # no whyrun - if the base ifconfig used in load_current_resource fails
    # there's no reasonable action that could have been taken in the course of 
    # a chef run to fix it.
  end
end

#delete_config ⇒ Object 



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# File 'lib/chef/provider/ifconfig.rb', line 191

def delete_config
  return unless can_generate_config?
  require 'fileutils'
  if ::File.exist?(@config_path)
    converge_by ("delete the #{@config_path}") do
      FileUtils.rm_f(@config_path, :verbose => false)
    end
  end
  Chef::Log.info("#{@new_resource} deleted configuration file")
end

#generate_config ⇒ Object 



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# File 'lib/chef/provider/ifconfig.rb', line 179

def generate_config
  return unless can_generate_config?
  b = binding
  template = ::ERB.new(@config_template)
  converge_by ("generate configuration file : #{@config_path}") do
    network_file = ::File.new(@config_path, "w")
    network_file.puts(template.result(b))
    network_file.close
  end
  Chef::Log.info("#{@new_resource} created configuration file")
end

#load_current_resource ⇒ Object 



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# File 'lib/chef/provider/ifconfig.rb', line 55

def load_current_resource
  @current_resource = Chef::Resource::Ifconfig.new(@new_resource.name)

  @ifconfig_success = true
  @interfaces = {}

  @status = popen4("ifconfig") do |pid, stdin, stdout, stderr|
    stdout.each do |line|

      if !line[0..9].strip.empty?
        @int_name = line[0..9].strip
        @interfaces[@int_name] = {"hwaddr" => (line =~ /(HWaddr)/ ? ($') : "nil").strip.chomp }
      else
        @interfaces[@int_name]["inet_addr"] = (line =~ /inet addr:(\S+)/ ? ($1) : "nil") if line =~ /inet addr:/
        @interfaces[@int_name]["bcast"] = (line =~ /Bcast:(\S+)/ ? ($1) : "nil") if line =~ /Bcast:/
        @interfaces[@int_name]["mask"] = (line =~ /Mask:(\S+)/ ? ($1) : "nil") if line =~ /Mask:/
        @interfaces[@int_name]["mtu"] = (line =~ /MTU:(\S+)/ ? ($1) : "nil") if line =~ /MTU:/
        @interfaces[@int_name]["metric"] = (line =~ /Metric:(\S+)/ ? ($1) : "nil") if line =~ /Metric:/
      end

      if @interfaces.has_key?(@new_resource.device)
        @interface = @interfaces.fetch(@new_resource.device)

        @current_resource.target(@new_resource.target)
        @current_resource.device(@int_name)
        @current_resource.inet_addr(@interface["inet_addr"])
        @current_resource.hwaddr(@interface["hwaddr"])
        @current_resource.bcast(@interface["bcast"])
        @current_resource.mask(@interface["mask"])
        @current_resource.mtu(@interface["mtu"])
        @current_resource.metric(@interface["metric"])
      end
    end
  end
  @current_resource
end

#whyrun_supported? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/provider/ifconfig.rb', line 51

def whyrun_supported?
  true
end