我的应用已连接到某些第三方API。
我有几个APIconnector模块 - 单例在应用程序启动时只初始化一次(初始化意味着客户端使用从机密中检索到的凭据进行一次实例化)
当我reload!
我的控制台中的应用程序时,我正在丢失这些服务,我必须从头开始退出并重新启动控制台。
基本上我的所有连接器都包含像这样的ServiceConnector模块
module ServiceConnector
extend ActiveSupport::Concern
included do
@activated = false
@activation_attempt = false
@client = nil
attr_reader :client, :activated
def self.client
@client ||= service_client
end
def self.service_name
name.gsub('Connector', '')
end
def self.activate
@activation_attempt = true
if credentials_present?
@client = service_client
@activated = true
end
end
以下是服务实现的示例
module My Connector
include ServiceConnector
@app_id = nil
@api_key = nil
def self.set_credentials(id, key)
@app_id = id
@api_key = key
end
def self.credentials_present?
@app_id.present? and @api_key.present?
end
def self.service_client
::SomeAPI::Client.new(
app_id: @app_id,
api_key: @api_key
)
end
end
我使用这种模式让我可以在Rails之外重用这些服务(例如Capistrano,没有Rails的worker等)。在Rails中,我会以这种方式加载服务
# config/initializers/my_service.rb
if my_service_should_be_activated?
my_service.set_credentials(
Rails.application.secrets.my_service_app_id,
Rails.application.secrets.my_service_app_key
)
my_service.activate
end
我想执行reload!
似乎清除了我的所有实例变量,包括@client
,@app_id
,@api_key
。
是否可以在reload!
之后添加要执行的代码?在我的情况下,我需要重新运行初始化程序。或者有没有办法确保我的服务的实例变量不会被重新加载清除! ?
答案 0 :(得分:0)
所以我提出了一个涉及两个初始化器的解决方案
首先,000_initializer将报告哪些秘密已成功加载
module SecretChecker
module_function
# Return true if all secrets are present
def secrets?(secret_list, under:)
secret_root = Rails.application.secrets
if under
if under.is_a?(Array)
secret_root = secret_root.public_send(under.shift)&.dig(*under.map(&:to_s))
else
secret_root = secret_root.public_send(under)
end
secret_list.map do |secret|
secret_root&.dig(secret.to_s).present?
end
else
secret_list.map do |secret|
secret_root&.public_send(secret.to_s).present?
end
end.reduce(:&)
end
def check_secrets(theme, secret_list, under: nil)
return if secrets?(secret_list, under: under)
message = "WARNING - Missing secrets for #{theme} - #{yield}"
puts message and Rails.logger.warn(message)
end
end
SecretChecker.check_secrets('Slack', %i[martine], under: [:slack, :webhooks]) do
'Slack Notifications will not work'
end
SecretChecker.check_secrets('MongoDB', %i[user password], under: :mongodb) do
'No Database Connection if auth is activated'
end
然后,使用ActiveSupport :: Reloader重新加载服务的模块(以Slack为例)
# config/initializers/0_service_activation.rb
module ServiceActivation
def self.with_reload
ActiveSupport::Reloader.to_prepare do
yield
end
end
module Slack
def self.service
::SlackConnector
end
def self.should_be_activated?
Rails.env.production? ||
Rails.env.staging? ||
(Rails.env.development? && ENV['ENABLE_SLACK'] == 'true')
end
def self.activate
slack = service
slack.webhook = Rails.application.secrets.slack&.dig('webhooks', 'my_webhook')
ENV['SLACK_INTERCEPT_CHANNEL'].try do |channel|
slack.intercept_channel = channel if channel.present?
end
slack.activate
slack
end
end
end
[
...,
ServiceActivation::Slack
] .each do |activator|
ServiceActivation.with_reload do
activator.activate if activator.should_be_activated?
activator.service.status_report
end
end