ruby – ActiveJob :: DeserializationError：尝试反序列化参数时出错

我正在尝试在生产中发送邮件,但它正在抛出Activejob deserailization error.sidekiq正在后台运行.我添加了sidekiq gem.我在comment_notification.rb中编写了一个方法,用于向用户发送电子邮件.然后在控制器中创建动作我添加了这个

def create
    CommentNotification.send_comment_mail(@current_user).deliver_later(wait: 1.minute)
end


def send_comment_email(current_user)
    mail( to: current_user.email,:subject => "commented on post",:from => "<[e-mail]>")
end

它在本地服务器上工作正常,但在生产中我收到此错误

/home/apps/commentpost/shared/bundle/ruby/2.3.0/gems/sidekiq-4.2.3/lib/sidekiq/processor.rb:69:in `run'
/home/apps/commentpost/shared/bundle/ruby/2.3.0/gems/sidekiq-4.2.3/lib/sidekiq/util.rb:17:in `watchdog'
/home/apps/commentpost/shared/bundle/ruby/2.3.0/gems/sidekiq-4.2.3/lib/sidekiq/util.rb:25:in `block in safe_thread'
2016-11-18T06:47:16.162Z 19093 TID-uw66g ActionMailer::DeliveryJob JID-e56b150964abf082e78089d9 INFO: start
2016-11-18T06:47:16.167Z 19093 TID-uw66g ActionMailer::DeliveryJob JID-e56b150964abf082e78089d9 INFO: fail: 0.005 sec
2016-11-18T06:47:16.167Z 19093 TID-uw66g WARN: {"context":"Job raised exception","job":{"class":"ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper","wrapped":"ActionMailer::DeliveryJob","queue":"mailers","args":[{"job_class":"ActionMailer::DeliveryJob","job_id":"96e06bc6-1380-47b9-9393-9727868b3897","queue_name":"mailers","priority":null,"arguments":["CommentNotification","send_comment_email","deliver_later",{"_aj_globalid":"gid://commentpost/comment/40"},{"_aj_globalid":"gid://commentpost/User/20"}],"locale":"en"}],"retry":true,"jid":"e56b150964abf082e78089d9","created_at":1479450405.8364522,"enqueued_at":1479451636.1602836,"error_message":"Error while trying to deserialize arguments: Couldn't find Comment with 'id'=40","error_class":"ActiveJob::DeserializationError","Failed_at":1479450405.8429642,"retry_count":6,"retried_at":1479451636.1668367},"jobstr":"{\"class\":\"ActiveJob::QueueAdapters::SidekiqAdapter::JobWrapper\",\"wrapped\":\"ActionMailer::DeliveryJob\",\"queue\":\"mailers\",\"args\":[{\"job_class\":\"ActionMailer::DeliveryJob\",\"job_id\":\"96e06bc6-1380-47b9-9393-9727868b3897\",\"queue_name\":\"mailers\",\"priority\":null,\"arguments\":[\"CommentNotification\",\"send_comment_email\",\"deliver_later\",{\"_aj_globalid\":\"gid://commentpost/comment/40\"},{\"_aj_globalid\":\"gid://commentpost/User/20\"}],\"locale\":\"en\"}],\"retry\":true,\"jid\":\"e56b150964abf082e78089d9\",\"created_at\":1479450405.8364522,\"enqueued_at\":1479451636.1602836,\"error_message\":\"Error while trying to deserialize arguments: Couldn't find Comment with 'id'=40\",\"error_class\":\"ActiveJob::DeserializationError\",\"Failed_at\":1479450405.8429642,\"retry_count\":5,\"retried_at\":1479450981.998904}"}
2016-11-18T06:47:16.167Z 19093 TID-uw66g WARN: ActiveJob::DeserializationError: Error while trying to deserialize arguments: Couldn't find Comment with 'id'=40
2016-11-18T06:47:16.167Z 19093 TID-uw66g WARN: /

有人可以帮我解决这个疑问吗？为此,我将感激不尽.

解决方法

据我所知,控制器中的create方法还会创建注释并发送新创建的注释的电子邮件？

那么最好在这里使用回调.
我们在项目中遇到了同样的问题,我们通过使用类似的东西来解决它：

# in model
after_commit :send_mail,on: :create

private

def send_mail
  CommentNotification.send_comment_mail(campaign.user).deliver_later
end

然后,您可以确保在邮件发送之前,记录确实存在于数据库中.

这里的问题是,您运行注释#create并将控制器中的邮件入队.现在它可能发生,Sidekiq在Rails提交新评论之前运行任务.
然后你就得到了这个错误.

问候,温泉