From 17818498847c934a9a29f664c1e8fd0472061b38 Mon Sep 17 00:00:00 2001 From: Jean Boussier Date: Tue, 9 Jan 2024 12:50:21 +0100 Subject: [PATCH] Inline what remains of the rails-settings-cached gem (#28618) Co-authored-by: Claire --- Gemfile | 1 - Gemfile.lock | 9 -- app/models/setting.rb | 153 +++++++++++++++++++------- spec/models/setting_spec.rb | 208 ++++++++---------------------------- 4 files changed, 157 insertions(+), 214 deletions(-) diff --git a/Gemfile b/Gemfile index a56702fad..e0980c072 100644 --- a/Gemfile +++ b/Gemfile @@ -75,7 +75,6 @@ gem 'premailer-rails' gem 'rack-attack', '~> 6.6' gem 'rack-cors', '~> 2.0', require: 'rack/cors' gem 'rails-i18n', '~> 7.0' -gem 'rails-settings-cached', '~> 0.6', git: 'https://github.com/mastodon/rails-settings-cached.git', branch: 'v0.6.6-aliases-true' gem 'redcarpet', '~> 3.6' gem 'redis', '~> 4.5', require: ['redis', 'redis/connection/hiredis'] gem 'mario-redis-lock', '~> 1.2', require: 'redis_lock' diff --git a/Gemfile.lock b/Gemfile.lock index 442022e81..50a6412a1 100644 --- a/Gemfile.lock +++ b/Gemfile.lock @@ -18,14 +18,6 @@ GIT sidekiq (>= 3.5) statsd-ruby (~> 1.4, >= 1.4.0) -GIT - remote: https://github.com/mastodon/rails-settings-cached.git - revision: 86328ef0bd04ce21cc0504ff5e334591e8c2ccab - branch: v0.6.6-aliases-true - specs: - rails-settings-cached (0.6.6) - rails (>= 4.2.0) - GIT remote: https://github.com/stanhu/omniauth-cas.git revision: 4211e6d05941b4a981f9a36b49ec166cecd0e271 @@ -922,7 +914,6 @@ DEPENDENCIES rails (~> 7.1.1) rails-controller-testing (~> 1.0) rails-i18n (~> 7.0) - rails-settings-cached (~> 0.6)! rdf-normalize (~> 0.5) redcarpet (~> 3.6) redis (~> 4.5) diff --git a/app/models/setting.rb b/app/models/setting.rb index 3bdc6ffb4..ecd9d2d73 100644 --- a/app/models/setting.rb +++ b/app/models/setting.rb @@ -13,49 +13,120 @@ # thing_id :bigint(8) # -class Setting < RailsSettings::Base - source Rails.root.join('config', 'settings.yml') +# This file is derived from a fork of the `rails-settings-cached` gem available at +# https://github.com/mastodon/rails-settings-cached/tree/v0.6.6-aliases-true, with +# the original available at: +# https://github.com/huacnlee/rails-settings-cached/tree/0.x + +# It is licensed as follows: + +# Copyright (c) 2006 Alex Wayne +# Some additional features added 2009 by Georg Ledermann + +# Permission is hereby granted, free of charge, to any person obtaining +# a copy of this software and associated documentation files (the +# "Software"), to deal in the Software without restriction, including +# without limitation the rights to use, copy, modify, merge, publish, +# distribute, sublicense, and/or sell copies of the Software, and to +# permit persons to whom the Software is furnished to do so, subject to +# the following conditions: + +# The above copyright notice and this permission notice shall be +# included in all copies or substantial portions of the Software. + +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOa AND +# NONINFRINGEMENT. IN NO EVENT SaALL THE AUTHORS OR COPYRIGHT HOLDERS BE +# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +class Setting < ApplicationRecord + after_commit :rewrite_cache, on: %i(create update) + after_commit :expire_cache, on: %i(destroy) + + # Settings are server-wide settings only, but they were previously + # used for users too. This can be dropped later with a database + # migration dropping any scoped setting. + default_scope { where(thing_type: nil, thing_id: nil) } + + class << self + # get or set a variable with the variable as the called method + # rubocop:disable Style/MissingRespondToMissing + def method_missing(method, *args) + # set a value for a variable + if method.end_with?('=') + var_name = method.to_s.chomp('=') + value = args.first + self[var_name] = value + else + # retrieve a value + self[method.to_s] + end + end + # rubocop:enable Style/MissingRespondToMissing + + def object(var_name) + find_by(var: var_name.to_s) + end + + def cache_prefix_by_startup + @cache_prefix_by_startup ||= Digest::MD5.hexdigest(default_settings.to_s) + end + + def cache_key(var_name) + "rails_settings_cached/#{cache_prefix_by_startup}/#{var_name}" + end + + def [](key) + Rails.cache.fetch(cache_key(key)) do + db_val = object(key) + db_val ? db_val.value : default_settings[key] + end + end + + # set a setting value by [] notation + def []=(var_name, value) + var_name = var_name.to_s + + record = object(var_name) || new(var: var_name) + record.value = value + record.save! + end + + def default_settings + return @default_settings if defined?(@default_settings) + + content = Rails.root.join('config', 'settings.yml').read + hash = content.empty? ? {} : YAML.safe_load(ERB.new(content).result, aliases: true).to_hash + @default_settings = hash[Rails.env] || {} + end + end + + # get the value field, YAML decoded + def value + YAML.safe_load(self[:value], permitted_classes: [ActiveSupport::HashWithIndifferentAccess, Symbol]) if self[:value].present? + end + + # set the value field, YAML encoded + def value=(new_value) + self[:value] = new_value.to_yaml + end + + def rewrite_cache + Rails.cache.write(cache_key, value) + end + + def expire_cache + Rails.cache.delete(cache_key) + end + + def cache_key + self.class.cache_key(var) + end def to_param var end - - class << self - def [](key) - return super(key) unless rails_initialized? - - Rails.cache.fetch(cache_key(key, nil)) do - db_val = object(key) - - if db_val - default_value = default_settings[key] - - return default_value.with_indifferent_access.merge!(db_val.value) if default_value.is_a?(Hash) - - db_val.value - else - default_settings[key] - end - end - end - - def all_as_records - vars = thing_scoped - records = vars.index_by(&:var) - - default_settings.each do |key, default_value| - next if records.key?(key) || default_value.is_a?(Hash) - - records[key] = Setting.new(var: key, value: default_value) - end - - records - end - - def default_settings - return {} unless RailsSettings::Default.enabled? - - RailsSettings::Default.instance - end - end end diff --git a/spec/models/setting_spec.rb b/spec/models/setting_spec.rb index e98062810..ca9c65511 100644 --- a/spec/models/setting_spec.rb +++ b/spec/models/setting_spec.rb @@ -13,189 +13,71 @@ RSpec.describe Setting do end describe '.[]' do + let(:key) { 'key' } + let(:cache_key) { 'cache-key' } + let(:cache_value) { 'cache-value' } + before do - allow(described_class).to receive(:rails_initialized?).and_return(rails_initialized) + allow(described_class).to receive(:cache_key).with(key).and_return(cache_key) end - let(:key) { 'key' } - - context 'when rails_initialized? is falsey' do - let(:rails_initialized) { false } - - it 'calls RailsSettings::Base#[]' do - allow(RailsSettings::Base).to receive(:[]).with(key) - - described_class[key] - - expect(RailsSettings::Base).to have_received(:[]).with(key) - end - end - - context 'when rails_initialized? is truthy' do + context 'when Rails.cache does not exists' do before do - allow(RailsSettings::Base).to receive(:cache_key).with(key, nil).and_return(cache_key) + allow(described_class).to receive(:object).with(key).and_return(object) + allow(described_class).to receive(:default_settings).and_return(default_settings) + + Fabricate(:setting, var: key, value: nil) + + Rails.cache.delete(cache_key) end - let(:rails_initialized) { true } - let(:cache_key) { 'cache-key' } - let(:cache_value) { 'cache-value' } + let(:object) { nil } + let(:default_value) { 'default_value' } + let(:default_settings) { { key => default_value } } - it 'calls not RailsSettings::Base#[]' do - allow(RailsSettings::Base).to receive(:[]).with(key) + it 'calls Setting.object' do + allow(described_class).to receive(:object).with(key) described_class[key] - expect(RailsSettings::Base).to_not have_received(:[]).with(key) + expect(described_class).to have_received(:object).with(key) end - context 'when Rails.cache does not exists' do - before do - allow(RailsSettings::Settings).to receive(:object).with(key).and_return(object) - allow(described_class).to receive(:default_settings).and_return(default_settings) - settings_double = instance_double(Settings::ScopedSettings, thing_scoped: records) - allow(Settings::ScopedSettings).to receive(:new).and_return(settings_double) - Rails.cache.delete(cache_key) + context 'when Setting.object returns truthy' do + let(:object) { db_val } + let(:db_val) { instance_double(described_class, value: 'db_val') } + let(:default_value) { 'default_value' } + + it 'returns db_val.value' do + expect(described_class[key]).to be db_val.value end + end - let(:object) { nil } - let(:default_value) { 'default_value' } - let(:default_settings) { { key => default_value } } - let(:records) { [Fabricate(:setting, var: key, value: nil)] } + context 'when Setting.object returns falsey' do + let(:object) { nil } - it 'calls RailsSettings::Settings.object' do - allow(RailsSettings::Settings).to receive(:object).with(key) + it 'returns default_settings[key]' do + expect(described_class[key]).to be default_settings[key] + end + end + end + context 'when Rails.cache exists' do + before do + Rails.cache.write(cache_key, cache_value) + end + + it 'does not query the database' do + callback = double + allow(callback).to receive(:call) + ActiveSupport::Notifications.subscribed callback, 'sql.active_record' do described_class[key] - - expect(RailsSettings::Settings).to have_received(:object).with(key) - end - - context 'when RailsSettings::Settings.object returns truthy' do - let(:object) { db_val } - let(:db_val) { instance_double(described_class, value: 'db_val') } - - context 'when default_value is a Hash' do - let(:default_value) { { default_value: 'default_value' } } - - it 'calls default_value.with_indifferent_access.merge!' do - indifferent_hash = instance_double(Hash, merge!: nil) - allow(default_value).to receive(:with_indifferent_access).and_return(indifferent_hash) - - described_class[key] - - expect(default_value).to have_received(:with_indifferent_access) - expect(indifferent_hash).to have_received(:merge!).with(db_val.value) - end - end - - context 'when default_value is not a Hash' do - let(:default_value) { 'default_value' } - - it 'returns db_val.value' do - expect(described_class[key]).to be db_val.value - end - end - end - - context 'when RailsSettings::Settings.object returns falsey' do - let(:object) { nil } - - it 'returns default_settings[key]' do - expect(described_class[key]).to be default_settings[key] - end end + expect(callback).to_not have_received(:call) end - context 'when Rails.cache exists' do - before do - Rails.cache.write(cache_key, cache_value) - end - - it 'does not query the database' do - callback = double - allow(callback).to receive(:call) - ActiveSupport::Notifications.subscribed callback, 'sql.active_record' do - described_class[key] - end - expect(callback).to_not have_received(:call) - end - - it 'returns the cached value' do - expect(described_class[key]).to eq cache_value - end - end - end - end - - describe '.all_as_records' do - before do - settings_double = instance_double(Settings::ScopedSettings, thing_scoped: records) - allow(Settings::ScopedSettings).to receive(:new).and_return(settings_double) - allow(described_class).to receive(:default_settings).and_return(default_settings) - end - - let(:key) { 'key' } - let(:default_value) { 'default_value' } - let(:default_settings) { { key => default_value } } - let(:original_setting) { Fabricate(:setting, var: key, value: nil) } - let(:records) { [original_setting] } - - it 'returns a Hash' do - expect(described_class.all_as_records).to be_a Hash - end - - context 'when records includes Setting with var as the key' do - let(:records) { [original_setting] } - - it 'includes the original Setting' do - setting = described_class.all_as_records[key] - expect(setting).to eq original_setting - end - end - - context 'when records includes nothing' do - let(:records) { [] } - - context 'when default_value is not a Hash' do - it 'includes Setting with value of default_value' do - setting = described_class.all_as_records[key] - - expect(setting).to be_a described_class - expect(setting).to have_attributes(var: key) - expect(setting).to have_attributes(value: 'default_value') - end - end - - context 'when default_value is a Hash' do - let(:default_value) { { 'foo' => 'fuga' } } - - it 'returns {}' do - expect(described_class.all_as_records).to eq({}) - end - end - end - end - - describe '.default_settings' do - subject { described_class.default_settings } - - before do - allow(RailsSettings::Default).to receive(:enabled?).and_return(enabled) - end - - context 'when RailsSettings::Default.enabled? is false' do - let(:enabled) { false } - - it 'returns {}' do - expect(subject).to eq({}) - end - end - - context 'when RailsSettings::Settings.enabled? is true' do - let(:enabled) { true } - - it 'returns instance of RailsSettings::Default' do - expect(subject).to be_a RailsSettings::Default + it 'returns the cached value' do + expect(described_class[key]).to eq cache_value end end end