Class: Chef::Provider::Route

Inherits:
Chef::Provider show all
Includes:
Mixin::Command
Defined in:
lib/chef/provider/route.rb

Constant Summary collapse

MASK = 
{ "0.0.0.0"          => "0",
"128.0.0.0"        => "1",
"192.0.0.0"        => "2",
"224.0.0.0"        => "3",
"240.0.0.0"        => "4",
"248.0.0.0"        => "5",
"252.0.0.0"        => "6",
"254.0.0.0"        => "7",
"255.0.0.0"        => "8",
"255.128.0.0"      => "9",
"255.192.0.0"      => "10",
"255.224.0.0"      => "11",
"255.240.0.0"      => "12",
"255.248.0.0"      => "13",
"255.252.0.0"      => "14",
"255.254.0.0"      => "15",
"255.255.0.0"      => "16",
"255.255.128.0"    => "17",
"255.255.192.0"    => "18",
"255.255.224.0"    => "19",
"255.255.240.0"    => "20",
"255.255.248.0"    => "21",
"255.255.252.0"    => "22",
"255.255.254.0"    => "23",
"255.255.255.0"    => "24",
"255.255.255.128"  => "25",
"255.255.255.192"  => "26",
"255.255.255.224"  => "27",
"255.255.255.240"  => "28",
"255.255.255.248"  => "29",
"255.255.255.252"  => "30",
"255.255.255.254"  => "31",
"255.255.255.255"  => "32" }

Constants included from Mixin::ShellOut

Mixin::ShellOut::DEPRECATED_OPTIONS

Instance Attribute Summary collapse

Attributes inherited from Chef::Provider

#action, #cookbook_name, #current_resource, #new_resource, #recipe_name, #run_context

Instance Method Summary collapse

Methods included from Mixin::Command

#chdir_or_tmpdir, #handle_command_failures, #output_of_command, #run_command, #run_command_and_return_stdout_stderr, #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, #check_resource_semantics!, #cleanup_after_converge, #converge_by, #converge_if_changed, #define_resource_requirements, #events, include_resource_dsl, include_resource_dsl_module, #initialize, #node, #process_resource_requirements, provides, provides?, #requirements, #resource_collection, #resource_updated?, #run_action, #set_updated_status, supports?, use_inline_resources, #whyrun_mode?

Methods included from Mixin::Provides

#provided_as, #provides, #provides?

Methods included from Mixin::DescendantsTracker

#descendants, descendants, direct_descendants, #direct_descendants, find_descendants_by_name, #find_descendants_by_name, #inherited, store_inherited

Methods included from DeprecatedLWRPClass

#const_missing, #deprecated_constants, #register_deprecated_lwrp_class

Methods included from Mixin::LazyModuleInclude

#descendants, #include, #included

Methods included from Mixin::NotifyingBlock

#notifying_block, #subcontext_block

Methods included from DSL::DeclareResource

#build_resource, #declare_resource, #delete_resource, #delete_resource!, #edit_resource, #edit_resource!, #find_resource, #find_resource!, #with_run_context

Methods included from Mixin::ShellOut

#run_command_compatible_options, #shell_out, #shell_out!, #shell_out_with_systems_locale, #shell_out_with_systems_locale!

Methods included from Mixin::PowershellOut

#powershell_out, #powershell_out!

Methods included from Mixin::WindowsArchitectureHelper

#assert_valid_windows_architecture!, #disable_wow64_file_redirection, #forced_32bit_override_required?, #is_i386_process_on_x86_64_windows?, #node_supports_windows_architecture?, #node_windows_architecture, #restore_wow64_file_redirection, #valid_windows_architecture?, #with_os_architecture, #wow64_architecture_override_required?, #wow64_directory

Methods included from DSL::PlatformIntrospection

#docker?, #platform?, #platform_family?, #value_for_platform, #value_for_platform_family

Constructor Details

This class inherits a constructor from Chef::Provider

Instance Attribute Details

#is_running ⇒ Object

Returns the value of attribute is_running.



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# File 'lib/chef/provider/route.rb', line 29

def is_running
  @is_running
end

Instance Method Details

#action_add ⇒ Object 



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# File 'lib/chef/provider/route.rb', line 131

def action_add
  # check to see if load_current_resource found the route
  if is_running
    Chef::Log.debug("#{@new_resource} route already active - nothing to do")
  else
    command = generate_command(:add)
    converge_by ("run #{ command } to add route") do
      run_command( :command => command )
      Chef::Log.info("#{@new_resource} added")
    end
  end

  #for now we always write the file (ugly but its what it is)
  generate_config
end

#action_delete ⇒ Object 



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# File 'lib/chef/provider/route.rb', line 147

def action_delete
  if is_running
    command = generate_command(:delete)
    converge_by ("run #{ command } to delete route ") do
      run_command( :command => command )
      Chef::Log.info("#{@new_resource} removed")
    end
  else
    Chef::Log.debug("#{@new_resource} route does not exist - nothing to do")
  end

  #for now we always write the file (ugly but its what it is)
  generate_config
end

#config_file_contents(action, options = {}) ⇒ Object 



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# File 'lib/chef/provider/route.rb', line 217

def config_file_contents(action, options = {})
  content = ""
  case action
  when :add
    content << "#{options[:target]}"
    content << "/#{options[:netmask]}" if options[:netmask]
    content << " via #{options[:gateway]}" if options[:gateway]
    content << "\n"
  end

  return content
end

#generate_command(action) ⇒ Object 



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# File 'lib/chef/provider/route.rb', line 199

def generate_command(action)
  common_route_items = ""
  common_route_items << "/#{MASK[@new_resource.netmask.to_s]}" if @new_resource.netmask
  common_route_items << " via #{@new_resource.gateway} " if @new_resource.gateway

  case action
  when :add
    command = "ip route replace #{@new_resource.target}"
    command << common_route_items
    command << " dev #{@new_resource.device} " if @new_resource.device
  when :delete
    command = "ip route delete #{@new_resource.target}"
    command << common_route_items
  end

  return command
end

#generate_config ⇒ Object 



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# File 'lib/chef/provider/route.rb', line 162

def generate_config
  conf = Hash.new
  case node[:platform]
  when "centos", "redhat", "fedora"
    # walk the collection
    run_context.resource_collection.each do |resource|
      if resource.is_a? Chef::Resource::Route
        # default to eth0
        if resource.device
          dev = resource.device
        else
          dev = "eth0"
        end

        conf[dev] = String.new if conf[dev].nil?
        case @action
        when :add
          conf[dev] << config_file_contents(:add, :target => resource.target, :netmask => resource.netmask, :gateway => resource.gateway) if resource.action == [:add]
        when :delete
          # need to do this for the case when the last route on an int
          # is removed
          conf[dev] << config_file_contents(:delete)
        end
      end
    end
    conf.each do |k, v|
      network_file_name = "/etc/sysconfig/network-scripts/route-#{k}"
      converge_by ("write route route.#{k}\n#{conf[k]} to #{ network_file_name }") do
        network_file = ::File.new(network_file_name, "w")
        network_file.puts(conf[k])
        Chef::Log.debug("#{@new_resource} writing route.#{k}\n#{conf[k]}")
        network_file.close
      end
    end
  end
end

#hex2ip(hex_data) ⇒ Object 



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# File 'lib/chef/provider/route.rb', line 65

def hex2ip(hex_data)
  # Cleanup hex data
  hex_ip = hex_data.to_s.downcase.gsub(/[^0-9a-f]/, "")

  # Check hex data format (IP is a 32bit integer, so should be 8 chars long)
  return nil if hex_ip.length != hex_data.length || hex_ip.length != 8

  # Extract octets from hex data
  octets = hex_ip.scan(/../).reverse.collect { |octet| [octet].pack("H2").unpack("C").first }

  # Validate IP
  ip = octets.join(".")
  begin
    IPAddr.new(ip, Socket::AF_INET).to_s
  rescue ArgumentError
    Chef::Log.debug("Invalid IP address data: hex=#{hex_ip}, ip=#{ip}")
    return nil
  end
end

#load_current_resource ⇒ Object 



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# File 'lib/chef/provider/route.rb', line 89

def load_current_resource
  self.is_running = false

  # cidr or quad dot mask
  if @new_resource.netmask
    new_ip = IPAddr.new("#{@new_resource.target}/#{@new_resource.netmask}")
  else
    new_ip = IPAddr.new(@new_resource.target)
  end

  # For linux, we use /proc/net/route file to read proc table info
  if node[:os] == "linux"
    route_file = ::File.open("/proc/net/route", "r")

    # Read all routes
    while (line = route_file.gets)
      # Get all the fields for a route
      iface, destination, gateway, flags, refcnt, use, metric, mask, mtu, window, irtt = line.split

      # Convert hex-encoded values to quad-dotted notation (e.g. 0064A8C0 => 192.168.100.0)
      destination = hex2ip(destination)
      gateway = hex2ip(gateway)
      mask = hex2ip(mask)

      # Skip formatting lines (header, etc)
      next unless destination && gateway && mask
      Chef::Log.debug("#{@new_resource} system has route: dest=#{destination} mask=#{mask} gw=#{gateway}")

      # check if what were trying to configure is already there
      # use an ipaddr object with ip/mask this way we can have
      # a new resource be in cidr format (i don't feel like
      # expanding bitmask by hand.
      #
      running_ip = IPAddr.new("#{destination}/#{mask}")
      Chef::Log.debug("#{@new_resource} new ip: #{new_ip.inspect} running ip: #{running_ip.inspect}")
      self.is_running = true if running_ip == new_ip && gateway == @new_resource.gateway
    end

    route_file.close
  end
end

#whyrun_supported? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/chef/provider/route.rb', line 85

def whyrun_supported?
  true
end