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#
# Author:: John Keiser (<jkeiser@chef.io>)
# Copyright:: Copyright 2012-2016, Chef Software 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_relative "../base_fs_object"
require_relative "../../../http/simple"
require "openssl" unless defined?(OpenSSL)
class Chef
module ChefFS
module FileSystem
module ChefServer
class CookbookFile < BaseFSObject
def initialize(name, parent, file)
super(name, parent)
@file = file
end
attr_reader :file
def checksum
file[:checksum]
end
def read
tmpfile = rest.streaming_request(file[:url])
File.open(tmpfile, "rb") { |f| f.read }
rescue Timeout::Error => e
raise Chef::ChefFS::FileSystem::OperationFailedError.new(:read, self, e, "Timeout reading #{file[:url]}: #{e}")
rescue Net::HTTPClientException => e
raise Chef::ChefFS::FileSystem::OperationFailedError.new(:read, self, e, "#{e.message} retrieving #{file[:url]}")
rescue Errno::ENOENT
raise Chef::ChefFS::FileSystem::NotFoundError.new(self, $!)
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)
OpenSSL::Digest::MD5.hexdigest(value)
end
end
end
end
end
end
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