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Contents
require 'forwardable'
require_relative './entry'
# Filesystem-based storage. See {FileStore}. Under reconsidering, please do not use it yet.
module Universa::FSStore
# Simple file-based store that could be efficiently user with per-file cloud storages like Dropbox,
# Google Disk, NextCloud and like.
#
# Notes to developers:
#
# - attributes are eager loaded: should always be contructed from contract or from file
# - contract is lazy loaded
class FileStore < Universa::ChainStore
# [String] The file store root path
attr :root
# Construct store in the path supplied. If the path is not empty, it will be scanned for stored contracts.
# @param [String] root_path of the store, must exist.
def initialize(root_path)
@root = root_path
@root = @root[0...-1] while (@root[-1] == '/')
init_cache
end
# (see ChainStore#store_contract)
def store_contract contract
entry = FSStore::Entry.new(self)
entry = entry.init_with_contract(contract)
add_to_cache entry
end
# (see ChainStore#find_by_id)
def find_by_id hash_id
@cache[hash_id]
end
# (see ChainStore#count)
def count
@cache.size
end
protected
# scan the root folder for attribute files and store them in the cache
def init_cache
@cache = {}
Dir[@root + "/*.unicon.yaml"].each {|name|
add_to_cache Entry.new(self).load_from_yaml_file(name)
}
end
# add single entry to the cache
# @param [Entry] entry to add. Could have contract not yet loaded but should be configured with attributes.
def add_to_cache(entry)
raise ArgumentError, "entry can't be nil" unless entry
@cache[entry.hash_id] = entry
end
end
end
Version data entries
35 entries across 35 versions & 1 rubygems