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Contents
module Killbill
module Plugin
module ActiveMerchant
class Utils
# Use base 62 to be safe
BASE62 = ('0'..'9').to_a + ('A'..'Z').to_a + ('a'..'z').to_a
def self.compact_uuid(uuid)
uuid = uuid.gsub(/-/, '')
uuid.hex.base(62).map { |i| BASE62[i].chr } * ''
end
def self.unpack_uuid(base62_uuid)
as_hex = base62_uuid.split(//).inject(0) { |i, e| i*62 + BASE62.index(e[0]) }
no_hyphens = "%x" % as_hex
no_hyphens = '0' * (32 - no_hyphens.size) + no_hyphens
no_hyphens.insert(8, "-").insert(13, "-").insert(18, "-").insert(23, "-")
end
# Relies on the fact that hashes enumerate their values in the order that the corresponding keys were inserted (Ruby 1.9+)
class BoundedLRUCache
def initialize(proc, max_size=1000)
@proc = proc
@max_size = max_size
@semaphore = Mutex.new
# TODO Pre-allocate?
@data = {}
end
def [](key)
@semaphore.synchronize do
found = true
value = @data.delete(key) { found = false }
if found
@data[key] = value
else
value = @proc.call(key)
@data[key] = value
value
end
end
end
def []=(key, val)
@semaphore.synchronize do
@data.delete(key)
@data[key] = val
if @data.length > @max_size
@data.delete(@data.first[0])
end
val
end
end
end
end
end
end
end
Version data entries
4 entries across 4 versions & 1 rubygems