/usr/lib/ruby/vendor_ruby/moneta/adapters/datamapper.rb is in ruby-moneta 0.7.20-2.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | require 'dm-core'
require 'dm-migrations'
module Moneta
module Adapters
# Datamapper backend
# @api public
class DataMapper
include Defaults
supports :create
class Store
include ::DataMapper::Resource
property :k, String, :key => true, :length => 255
property :v, Text, :lazy => false
self.raise_on_save_failure = true
end
# @param [Hash] options
# @option options [String] :setup Datamapper setup string
# @option options [String/Symbol] :repository (:moneta) Repository name
# @option options [String/Symbol] :table (:moneta) Table name
def initialize(options = {})
raise ArgumentError, 'Option :setup is required' unless options[:setup]
@repository = (options.delete(:repository) || :moneta).to_sym
Store.storage_names[@repository] = (options.delete(:table) || :moneta).to_s
::DataMapper.setup(@repository, options[:setup])
context { Store.auto_upgrade! }
end
# (see Proxy#key?)
def key?(key, options = {})
context { Store.get(key) != nil }
end
# (see Proxy#load)
def load(key, options = {})
context do
record = Store.get(key)
record && record.v
end
end
# (see Proxy#store)
def store(key, value, options = {})
context do
if record = Store.get(key)
record.update(:k => key, :v => value)
else
Store.create(:k => key, :v => value)
end
value
end
rescue
tries ||= 0
(tries += 1) < 10 ? retry : raise
end
# (see Proxy#create)
def create(key, value, options = {})
context do
Store.create(:k => key, :v => value)
true
end
rescue
# FIXME: This catches too many errors
# it should only catch a not-unique-exception
false
end
# (see Proxy#delete)
def delete(key, options = {})
context do
if record = Store.get(key)
value = record.v
record.destroy!
value
end
end
end
# (see Proxy#clear)
def clear(options = {})
context { Store.all.destroy! }
self
end
private
def context
::DataMapper.repository(@repository) { yield }
end
end
end
end
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