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#
# Author:: John Keiser (<jkeiser@opscode.com>)
# Copyright:: Copyright (c) 2013 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
#
# https://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 "data_already_exists_error"
require_relative "data_not_found_error"
require_relative "interface_v2"
module ChefZero
module DataStore
class MemoryStoreV2 < ChefZero::DataStore::InterfaceV2
def initialize
clear
end
attr_reader :data
def clear
@data = {}
end
def create_dir(path, name, *options)
parent = _get(path, options.include?(:recursive))
if parent.key?(name)
unless options.include?(:recursive)
raise DataAlreadyExistsError.new(path + [name])
end
else
parent[name] = {}
end
end
def create(path, name, data, *options)
unless data.is_a?(String)
raise "set only works with strings (given data: #{data.inspect})"
end
parent = _get(path, options.include?(:create_dir))
if parent.key?(name)
raise DataAlreadyExistsError.new(path + [name])
end
parent[name] = data
end
def get(path, request = nil)
value = _get(path)
if value.is_a?(Hash)
raise "get() called on directory #{path.join("/")}"
end
value
end
def set(path, data, *options)
unless data.is_a?(String)
raise "set only works with strings: #{path} = #{data.inspect}"
end
# Get the parent
parent = _get(path[0..-2], options.include?(:create_dir))
if !options.include?(:create) && !parent[path[-1]]
raise DataNotFoundError.new(path)
end
parent[path[-1]] = data
end
def delete(path)
parent = _get(path[0, path.length - 1])
unless parent.key?(path[-1])
raise DataNotFoundError.new(path)
end
unless parent[path[-1]].is_a?(String)
raise "delete only works with strings: #{path}"
end
parent.delete(path[-1])
end
def delete_dir(path, *options)
parent = _get(path[0, path.length - 1])
unless parent.key?(path[-1])
raise DataNotFoundError.new(path)
end
unless parent[path[-1]].is_a?(Hash)
raise "delete_dir only works with directories: #{path}"
end
parent.delete(path[-1])
end
def list(path)
dir = _get(path)
unless dir.is_a? Hash
raise "list only works with directories (#{path} = #{dir.class})"
end
dir.keys.sort
end
def exists?(path, options = {})
value = _get(path)
if value.is_a?(Hash) && !options[:allow_dirs]
raise "exists? does not work with directories (#{path} = #{value.class})"
end
true
rescue DataNotFoundError
false
end
def exists_dir?(path)
dir = _get(path)
unless dir.is_a? Hash
raise "exists_dir? only works with directories (#{path} = #{dir.class})"
end
true
rescue DataNotFoundError
false
end
private
def _get(path, create_dir = false)
value = @data
path.each_with_index do |path_part, index|
unless value.key?(path_part)
if create_dir
value[path_part] = {}
else
raise DataNotFoundError.new(path[0, index + 1])
end
end
value = value[path_part]
end
value
end
end
end
end
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