111 lines
3.1 KiB
Ruby
111 lines
3.1 KiB
Ruby
#
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# Copyright (C) 2011 Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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class Setting < ActiveRecord::Base
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# This is needed because Setting is called in Canvas.cache_store_config
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# before switchman is loaded
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cattr_accessor :shard_category unless self.respond_to?(:shard_category)
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self.shard_category = :unsharded
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attr_accessible :name, :value
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@@cache = {}
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@@yaml_cache = {}
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def self.get(name, default)
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if @@cache.has_key?(name)
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@@cache[name]
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else
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@@cache[name] = Setting.find_or_initialize_by_name(name, :value => default).value
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end
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end
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class << self
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alias_method :get_cached, :get
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end
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# Note that after calling this, you should send SIGHUP to all running Canvas processes
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def self.set(name, value)
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@@cache.delete(name)
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s = Setting.find_or_initialize_by_name(name)
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s.value = value
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s.save!
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end
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def self.remove(name)
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Setting.find_by_name(name).destroy rescue nil
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end
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def self.get_or_set(name, new_val)
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Setting.find_or_create_by_name(name, :value => new_val).value
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end
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# this cache doesn't get invalidated by other rails processes, obviously, so
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# use this only for relatively unchanging data
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def self.clear_cache(name)
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@@cache.delete(name)
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end
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def self.reset_cache!
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@@cache = {}
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@@yaml_cache = {}
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end
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def self.remove(name)
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@@cache.delete(name)
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s = Setting.find_by_name(name)
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s.destroy if s
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end
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def self.set_config(config_name, value)
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raise "config settings can only be set via config file" unless Rails.env.test?
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@@yaml_cache[config_name] ||= {}
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@@yaml_cache[config_name][Rails.env] = value
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end
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def self.from_config(config_name, with_rails_env=:current)
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with_rails_env = Rails.env if with_rails_env == :current
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if @@yaml_cache[config_name] # if the config wasn't found it'll try again
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return @@yaml_cache[config_name] if !with_rails_env
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return @@yaml_cache[config_name][with_rails_env]
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end
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config = nil
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path = File.join(Rails.root, 'config', "#{config_name}.yml")
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if File.exists?(path)
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if Rails.env.test?
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config_string = ERB.new(File.read(path))
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config = YAML.load(config_string.result)
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else
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config = YAML.load_file(path)
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end
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if config.respond_to?(:with_indifferent_access)
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config = config.with_indifferent_access
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else
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config = nil
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end
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end
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@@yaml_cache[config_name] = config
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config = config[with_rails_env] if config && with_rails_env
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config
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end
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end
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