mirror of
https://github.com/discourse/discourse.git
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356 lines
8.2 KiB
Ruby
356 lines
8.2 KiB
Ruby
require_dependency 'site_settings/deprecated_settings'
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require_dependency 'site_settings/type_supervisor'
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require_dependency 'site_settings/defaults_provider'
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require_dependency 'site_settings/db_provider'
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module SiteSettingExtension
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include SiteSettings::DeprecatedSettings
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extend Forwardable
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def_delegator :defaults, :site_locale, :default_locale
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def_delegator :defaults, :site_locale=, :default_locale=
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def_delegator :defaults, :has_setting?
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def_delegators 'SiteSettings::TypeSupervisor', :types, :supported_types
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# part 1 of refactor, centralizing the dependency here
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def provider=(val)
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@provider = val
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refresh!
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end
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def provider
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@provider ||= SiteSettings::DbProvider.new(SiteSetting)
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end
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def mutex
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@mutex ||= Mutex.new
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end
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def current
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@containers ||= {}
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@containers[provider.current_site] ||= {}
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end
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def defaults
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@defaults ||= SiteSettings::DefaultsProvider.new(self)
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end
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def type_supervisor
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@type_supervisor ||= SiteSettings::TypeSupervisor.new(defaults)
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end
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def categories
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@categories ||= {}
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end
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def shadowed_settings
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@shadowed_settings ||= []
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end
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def hidden_settings
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@hidden_settings ||= []
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end
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def refresh_settings
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@refresh_settings ||= []
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end
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def client_settings
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@client_settings ||= []
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end
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def previews
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@previews ||= {}
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end
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def setting(name_arg, default = nil, opts = {})
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name = name_arg.to_sym
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shadowed_val = nil
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mutex.synchronize do
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defaults.load_setting(
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name,
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default,
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opts.extract!(*SiteSettings::DefaultsProvider::CONSUMED_OPTS)
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)
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categories[name] = opts[:category] || :uncategorized
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if opts[:hidden]
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hidden_settings << name
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end
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if opts[:shadowed_by_global] && GlobalSetting.respond_to?(name)
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val = GlobalSetting.send(name)
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unless val.nil? || (val == ''.freeze)
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shadowed_val = val
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hidden_settings << name
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shadowed_settings << name
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end
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end
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if opts[:refresh]
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refresh_settings << name
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end
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if opts[:client]
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client_settings << name.to_sym
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end
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if opts[:preview]
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previews[name] = opts[:preview]
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end
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type_supervisor.load_setting(
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name,
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opts.extract!(*SiteSettings::TypeSupervisor::CONSUMED_OPTS)
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)
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if !shadowed_val.nil?
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setup_shadowed_methods(name, shadowed_val)
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else
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setup_methods(name)
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end
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end
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end
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def settings_hash
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result = {}
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defaults.each_key do |s|
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result[s] = send(s).to_s
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end
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result
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end
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def client_settings_json
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Rails.cache.fetch(SiteSettingExtension.client_settings_cache_key, expires_in: 30.minutes) do
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client_settings_json_uncached
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end
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end
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def client_settings_json_uncached
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MultiJson.dump(Hash[*@client_settings.map { |n| [n, self.send(n)] }.flatten])
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end
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# Retrieve all settings
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def all_settings(include_hidden = false)
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defaults
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.reject { |s, _| !include_hidden && hidden_settings.include?(s) }
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.map do |s, v|
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value = send(s)
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opts = {
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setting: s,
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description: description(s),
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default: defaults[s].to_s,
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value: value.to_s,
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category: categories[s],
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preview: previews[s]
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}.merge(type_supervisor.type_hash(s))
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opts
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end.unshift(defaults.locale_setting_hash)
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end
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def description(setting)
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I18n.t("site_settings.#{setting}")
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end
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def self.client_settings_cache_key
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# NOTE: we use the git version in the key to ensure
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# that we don't end up caching the incorrect version
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# in cases where we are cycling unicorns
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"client_settings_json_#{Discourse.git_version}"
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end
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# refresh all the site settings
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def refresh!
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mutex.synchronize do
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ensure_listen_for_changes
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new_hash = Hash[*(defaults.db_all.map { |s|
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[s.name.to_sym, type_supervisor.to_rb_value(s.name, s.value, s.data_type)]
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}.to_a.flatten)]
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defaults_view = defaults.all
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# add locale default and defaults based on default_locale, cause they are cached
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new_hash = defaults_view.merge!(new_hash)
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# add shadowed
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shadowed_settings.each { |ss| new_hash[ss] = GlobalSetting.send(ss) }
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changes, deletions = diff_hash(new_hash, current)
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changes.each { |name, val| current[name] = val }
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deletions.each { |name, _| current[name] = defaults_view[name] }
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clear_cache!
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end
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end
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def ensure_listen_for_changes
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unless @subscribed
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MessageBus.subscribe("/site_settings") do |message|
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process_message(message)
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end
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@subscribed = true
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end
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end
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def process_message(message)
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data = message.data
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if data["process"] != process_id
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begin
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@last_message_processed = message.global_id
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MessageBus.on_connect.call(message.site_id)
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refresh!
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ensure
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MessageBus.on_disconnect.call(message.site_id)
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end
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end
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end
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def diags
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{
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last_message_processed: @last_message_processed
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}
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end
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def process_id
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@process_id ||= SecureRandom.uuid
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end
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def after_fork
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@process_id = nil
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ensure_listen_for_changes
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end
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def remove_override!(name)
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provider.destroy(name)
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current[name] = defaults[name]
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clear_cache!
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end
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def add_override!(name, val)
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val, type = type_supervisor.to_db_value(name, val)
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provider.save(name, val, type)
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current[name] = type_supervisor.to_rb_value(name, val)
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notify_clients!(name) if client_settings.include? name
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clear_cache!
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end
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def notify_changed!
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MessageBus.publish('/site_settings', process: process_id)
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end
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def notify_clients!(name)
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MessageBus.publish('/client_settings', name: name, value: self.send(name))
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end
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def requires_refresh?(name)
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refresh_settings.include?(name.to_sym)
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end
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def filter_value(name, value)
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if %w[disabled_image_download_domains onebox_domains_blacklist exclude_rel_nofollow_domains email_domains_blacklist email_domains_whitelist white_listed_spam_host_domains].include? name
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domain_array = []
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value.split('|').each { |url| domain_array << get_hostname(url) }
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value = domain_array.join("|")
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end
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value
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end
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def set(name, value)
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if has_setting?(name)
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value = filter_value(name, value)
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self.send("#{name}=", value)
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Discourse.request_refresh! if requires_refresh?(name)
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else
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raise ArgumentError.new("Either no setting named '#{name}' exists or value provided is invalid")
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end
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end
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def set_and_log(name, value, user = Discourse.system_user)
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prev_value = send(name)
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set(name, value)
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StaffActionLogger.new(user).log_site_setting_change(name, prev_value, value) if has_setting?(name)
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end
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protected
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def clear_cache!
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Rails.cache.delete(SiteSettingExtension.client_settings_cache_key)
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Site.clear_anon_cache!
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end
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def diff_hash(new_hash, old)
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changes = []
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deletions = []
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new_hash.each do |name, value|
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changes << [name, value] if !old.has_key?(name) || old[name] != value
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end
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old.each do |name, value|
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deletions << [name, value] unless new_hash.has_key?(name)
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end
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[changes, deletions]
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end
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def setup_shadowed_methods(name, value)
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clean_name = name.to_s.sub("?", "").to_sym
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define_singleton_method clean_name do
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value
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end
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define_singleton_method "#{clean_name}?" do
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value
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end
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define_singleton_method "#{clean_name}=" do |val|
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Rails.logger.warn("An attempt was to change #{clean_name} SiteSetting to #{val} however it is shadowed so this will be ignored!")
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nil
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end
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end
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def setup_methods(name)
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clean_name = name.to_s.sub("?", "").to_sym
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define_singleton_method clean_name do
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if (c = current[name]).nil?
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refresh!
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current[name]
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else
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c
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end
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end
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define_singleton_method "#{clean_name}?" do
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self.send clean_name
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end
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define_singleton_method "#{clean_name}=" do |val|
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add_override!(name, val)
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end
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end
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def get_hostname(url)
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unless (URI.parse(url).scheme rescue nil).nil?
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url = "http://#{url}" if URI.parse(url).scheme.nil?
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url = URI.parse(url).host
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end
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url
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end
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private
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def logger
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Rails.logger
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end
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end
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