Question

我正在尝试使用Simple Workflow服务来管理rails应用程序的作业。我的工作基于文档中的预订示例。 rake任务看起来像：

require "#{Rails.root}/app/helpers/application_helper"
include ApplicationHelper

namespace :swf do
  desc 'Start activity worker'
  task :activity => :environment do
    swf, domain = swf_domain
    activity_worker = AWS::Flow::ActivityWorker.new(swf.client, domain, SWF_ACTIVITY_TASK_LIST, ScrapeActivity) { {:use_forking => false} }
    activity_worker.start
  end

  desc 'Start workflow worker'
  task :workflow => :environment do
    swf, domain = swf_domain
    worker = AWS::Flow::WorkflowWorker.new(swf.client, domain, SWF_WORKFLOW_TASK_LIST, ScrapeWorkflow)
    worker.start
  end

  desc 'Queue activities'
  task :scrape => :environment do
    swf, domain = swf_domain
    my_workflow_client = workflow_client(swf.client, domain) { {:from_class => "ScrapeWorkflow"} }

    Product.all.each do |product|
      $workflow_execution = my_workflow_client.start_execution(product.asin)
    end
  end
end

其余代码为online。我正在使用aws-flow gem（我添加了aws-flow-core），但是当我尝试运行activity worker时，我收到一个错误：uninitialized constant AWS::Flow::ActivityWorker。

Answer 1

我通过添加到rake任务修复了这个问题：

require "#{ENV['GEM_HOME']}/gems/aws-flow-1.0.0/lib/aws/decider.rb"

如何从rails rake任务访问AWS :: Flow :: ActivityWorker

1 个答案: