ohai 6.14.0-2 / usr / lib / ruby / vendor_ruby / ohai / plugins / eucalyptus.rb

#
# Author:: Tim Dysinger (<tim@dysinger.net>)
# Author:: Benjamin Black (<bb@opscode.com>)
# Author:: Christopher Brown (<cb@opscode.com>)
# Copyright:: Copyright (c) 2009 Opscode, Inc.
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

provides "eucalyptus"

require 'ohai/mixin/ec2_metadata'

require_plugin "hostname"
require_plugin "kernel"
require_plugin "network"

extend Ohai::Mixin::Ec2Metadata

def get_mac_address(addresses)
  detected_addresses = addresses.detect { |address, keypair| keypair == {"family"=>"lladdr"} }
  if detected_addresses
    return detected_addresses.first
  else
    return ""
  end
end

def has_euca_mac?
  network[:interfaces].values.each do |iface|
    has_mac = (get_mac_address(iface[:addresses]) =~ /^[dD]0:0[dD]:/)
    Ohai::Log.debug("has_euca_mac? == #{!!has_mac}")
    return true if has_mac
  end

  Ohai::Log.debug("has_euca_mac? == false")
  false
end

def looks_like_euca?
  # Try non-blocking connect so we don't "block" if 
  # the Xen environment is *not* EC2
  hint?('eucalyptus') || has_euca_mac? && can_metadata_connect?(EC2_METADATA_ADDR,80)
end

if looks_like_euca?
  Ohai::Log.debug("looks_like_euca? == true")
  eucalyptus Mash.new
  self.fetch_metadata.each {|k, v| eucalyptus[k] = v }
  eucalyptus[:userdata] = self.fetch_userdata
else
  Ohai::Log.debug("looks_like_euca? == false")
  false
end