如何让rufus-scheduler使用部署到Heroku的Rails应用程序？
在./config/initializers我创建了一个名为task_scheduler.rb的文件，它包含以下代码：
require 'rufus-scheduler' require 'mechanize' scheduler = Rufus::Scheduler.new scheduler.every("1h") do puts "Starting Rufus Scheduler - Task 1 - Checking exampleShop for new orders" a = Mechanize.new a.get('http://exampleshop.nl/admin/') do |page| # Select the login form login_form = page.forms.first # Insert the username and password login_form.username = 'username' login_form.password = 'password' # Submit the login information dashboard_page = a.submit(login_form, login_form.buttons.first) # Check if the login was successfull puts check_1 = dashboard_page.title == 'Dashboard' ? "CHECK 1 DASHBOARD SUCCESS" : "CHECK 1 DASHBOARD FAIL" # Visit the orders index page to scrape some standard information orders_page = a.click(dashboard_page.link_with(:text => /Bestellingen/)) # pp orders_page # => http://pastebin.com/L3zASer6 # Check if the visit is successful puts check_2 = orders_page.title == 'Bestellingen' ? "CHECK 2 ORDERS SUCCESS" : "CHECK 2 ORDERS FAIL" # Search for all #singleOrder table row's and put them in variable all_single_orders all_single_orders = orders_page.search("#singleOrder") # Scrape the needed information (the actual save to database is omitted) all_single_orders.each do |order| # Set links for each order order_link = order.at_css("a")['href'] #Assuming first link in row @order_id = order.search("#orderId").text @order_status = order.search("#orderStatus").text @order_revenue = order.search("#orderAmount").text # Visit a single order page to fetch more detailed information single_order_page = orders_page.link_with(:href => order_link).click @first_name = single_order_page.search(".firstName").text @last_name = single_order_page.search(".lastName").text @city = single_order_page.search(".city").text @postal_code = single_order_page.search(".postalCode").text @address = single_order_page.search(".address").text @email = single_order_page.search(".email").text @order_quantity = single_order_page.search(".orderQuantity").text order = Order.create( order_id: @order_id, first_name: @first_name, last_name: @last_name, city: @city, email: @email, postal_code: @postal_code, address: @address, order_quantity: @order_quantity, order_revenue: @order_revenue, order_status: @order_status) end end puts "Ending Rufus Scheduler - Task 1 - Checking exampleShop for new orders" end
rufus-scheduler在开发环境中进行测试时可以正常工作。 但是当我将应用程序部署到Heroku（免费）时它停止工作。
我正在使用Phusion Passenger 4.0.27作为应用程序服务器。
我的Gemfile看起来像这样：
source 'https://rubygems.org' ruby '2.0.0' gem 'rails', '4.0.1' gem 'rufus-scheduler', '3.0.2' gem 'pg' gem 'mechanize' gem 'bcrypt-ruby', '3.1.2' gem 'sass-rails', '~> 4.0.0' gem 'uglifier', '>= 1.3.0' gem 'coffee-rails', '~> 4.0.0' gem 'jquery-rails' gem 'turbolinks' gem 'jbuilder', '~> 1.2' gem 'newrelic_rpm' group :doc do gem 'sdoc', require: false end group :development do gem 'sqlite3' end group :production do gem 'rails_12factor' gem 'passenger' gem 'pg' end
Phusion Passenger所需的Procfile包含以下内容：
web: bundle exec passenger start -p $PORT --max-pool-size 3
我没有工人跑。 我正在使用一个免费的标准web Dyno。
知道为什么部署到Heroku时rufus-scheduler不能正常工作吗？
UPDATE
我知道我可以创建一个客户.rake文件并使用免费的Heroku Scheduler add-on来执行任务。 但我想知道是否有办法让rufus-scheduler和free heroku dyno组合起作用。
这是一个如何让它在Rails上工作的例子：
# # config/initializers/scheduler.rb require 'rufus-scheduler' # Let's use the rufus-scheduler singleton # s = Rufus::Scheduler.singleton # Awesome recurrent task... # s.every '1m' do Rails.logger.info "hello, it's #{Time.now}" end
看一下文档 。
您可以改为使用Heroku的Scheduler并将此任务移至Heroku的本机工具： https ： //devcenter.heroku.com/articles/scheduler
我刚刚添加到我的Procfile解决了这个问题：
web: bundle exec passenger start -p $PORT --max-pool-size 3 --min-instances 2