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#
# Author:: John Keiser (<jkeiser@opscode.com>)
# Copyright:: Copyright (c) 2012 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.
#
require 'chef/chef_fs/file_system/base_fs_object'
require 'digest/md5'
class Chef
module ChefFS
module FileSystem
class CookbookFile < BaseFSObject
def initialize(name, parent, file)
super(name, parent)
@file = file
end
attr_reader :file
def checksum
file[:checksum]
end
def read
old_sign_on_redirect = rest.sign_on_redirect
rest.sign_on_redirect = false
begin
rest.get_rest(file[:url])
ensure
rest.sign_on_redirect = old_sign_on_redirect
end
end
def rest
parent.rest
end
def compare_to(other)
other_value = nil
if other.respond_to?(:checksum)
other_checksum = other.checksum
else
begin
other_value = other.read
rescue Chef::ChefFS::FileSystem::NotFoundError
return [ false, nil, :none ]
end
other_checksum = calc_checksum(other_value)
end
[ checksum == other_checksum, nil, other_value ]
end
private
def calc_checksum(value)
begin
Digest::MD5.hexdigest(value)
rescue Chef::ChefFS::FileSystem::NotFoundError
nil
end
end
end
end
end
end
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