Sha256: e91bc23894adb0caabcc28aa232f7c2bcbedddcdae7190352b8579c1b39860db
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Size: 1.93 KB
Versions: 6
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Stored size: 1.93 KB
Contents
#
# Author:: Adam Jacob (<adam@opscode.com>)
# Author:: Daniel DeLeo (<dan@kallistec.com>)
# Copyright:: Copyright (c) 2009 Opscode, Inc.
# Copyright:: Copyright (c) 2009 Daniel DeLeo
# 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/cache'
class Chef
class Cache
class Checksum < Chef::Cache
def self.checksum_for_file(*args)
instance.checksum_for_file(*args)
end
def checksum_for_file(file)
key, fstat = filename_to_key(file), File.stat(file)
lookup_checksum(key, fstat) || generate_checksum(key, file, fstat)
end
def lookup_checksum(key, fstat)
cached = @moneta.fetch(key)
if cached && file_unchanged?(cached, fstat)
cached["checksum"]
else
nil
end
end
def generate_checksum(key, file, fstat)
checksum = checksum_file(file)
moneta.store(key, {"mtime" => fstat.mtime.to_f, "checksum" => checksum})
checksum
end
private
def file_unchanged?(cached, fstat)
cached["mtime"].to_f == fstat.mtime.to_f
end
def checksum_file(file)
digest = Digest::SHA256.new
IO.foreach(file) {|line| digest.update(line) }
digest.hexdigest
end
def filename_to_key(file)
"chef-file-#{file.gsub(/(#{File::SEPARATOR}|\.)/, '-')}"
end
end
end
end
Version data entries
6 entries across 6 versions & 2 rubygems