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社区首页 >问答首页 >无法在Ruby代码中捕获Errno::ECONNRESET

问无法在Ruby代码中捕获Errno::ECONNRESET
EN

Stack Overflow用户
提问于 2012-11-08 05:00:09
回答 1查看 1.5K关注 0票数 1

在我部署到Heroku的Rails3.1项目中，我有一个rake任务，它根据数据库中的记录生成几十万个小PNG，并使用fog将结果上传到S3，一次一个文件。(在我使用heroku之前，任务将文件保存在本地，一切工作正常。)当我使用heroku run:detached运行任务时，它运行了一段时间，并上传了一堆文件，但最终使用Connection reset by peer (Errno::ECONNRESET)失败了。奇怪的是，我修改了脚本以捕获并重试该异常，如下所示：

代码语言：javascript
复制
file_exists = false
retry_count = 10
begin
  file_exists = directory.files.head(filekey)
rescue Errno::ECONNRESET => e
  if retry_count > 0 then
    logger.warning("Connection reset: #{e.inspect}")
    retry_count -= 1
    sleep(1)
    retry
  else
    raise
  end
end

根据堆栈跟踪，file_exists = directory.files.head(filekey)是导致异常的代码行，所以我觉得我遗漏了一些关于Ruby异常处理的东西。我很想知道我做错了什么，因为我不能百分之百确定这是我的开始/救援代码块的问题，是fog处理网络错误的方式，还是其他什么问题。

下面是完整的堆栈跟踪：

代码语言：javascript
复制
Nov 07 12:08:01 ... app/run.1:  Connection reset by peer (Errno::ECONNRESET)
Nov 07 12:08:01 ... app/run.1:  /app/vendor/ruby-1.8.7/lib/ruby/1.8/openssl/buffering.rb:36:in `sysread'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/ruby-1.8.7/lib/ruby/1.8/openssl/buffering.rb:36:in `fill_rbuff'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/ruby-1.8.7/lib/ruby/1.8/openssl/buffering.rb:68:in `read'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/excon-0.16.7/lib/excon/socket.rb:121:in `read'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/ruby-1.8.7/lib/ruby/1.8/timeout.rb:67:in `timeout'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/excon-0.16.7/lib/excon/socket.rb:120:in `read'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/excon-0.16.7/lib/excon/ssl_socket.rb:79:in `read'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/excon-0.16.7/lib/excon/response.rb:21:in `parse'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/excon-0.16.7/lib/excon/connection.rb:275:in `request_kernel'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/excon-0.16.7/lib/excon/connection.rb:103:in `request'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/fog-1.6.0/lib/fog/core/connection.rb:20:in `request'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/fog-1.6.0/lib/fog/aws/storage.rb:392:in `request'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/fog-1.6.0/lib/fog/aws/requests/storage/head_object.rb:53:in `head_object'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/fog-1.6.0/lib/fog/aws/models/storage/files.rb:98:in `head'
Nov 07 12:08:01 ... app/run.1:  /app/lib/tasks/assets.rake:45
Nov 07 12:08:01 ... app/run.1:  /app/lib/tasks/assets.rake:37:in `each'
Nov 07 12:08:01 ... app/run.1:  /app/lib/tasks/assets.rake:37
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/activerecord-3.1.8/lib/active_record/relation/batches.rb:21:in `find_each'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/activerecord-3.1.8/lib/active_record/relation/batches.rb:21:in `each'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/activerecord-3.1.8/lib/active_record/relation/batches.rb:21:in `find_each'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/activerecord-3.1.8/lib/active_record/relation/batches.rb:69:in `find_in_batches'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/activerecord-3.1.8/lib/active_record/relation/batches.rb:20:in `find_each'
Nov 07 12:08:01 ... app/run.1:  /app/lib/tasks/assets.rake:35
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `call'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:205:in `execute'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `each'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:200:in `execute'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:158:in `invoke_with_call_chain'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/ruby-1.8.7/lib/ruby/1.8/monitor.rb:242:in `synchronize'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:151:in `invoke_with_call_chain'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/task.rb:144:in `invoke'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:116:in `invoke_task'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `top_level'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `each'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:94:in `top_level'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:88:in `top_level'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:66:in `run'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:133:in `standard_exception_handling'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/lib/rake/application.rb:63:in `run'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/gems/rake-0.9.2.2/bin/rake:33
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/bin/rake:23:in `load'
Nov 07 12:08:01 ... app/run.1:  /app/vendor/bundle/ruby/1.8/bin/rake:23
Nov 07 12:08:01 ... app/run.1:  Tasks: TOP => ...:make_outlines
Nov 07 12:08:02 ... heroku/run.1:  Process exited with status 1
Nov 07 12:08:02 ... heroku/run.1:  State changed from up to complete
ruby
heroku
amazon-s3
fog
EN

回答 1

Stack Overflow用户

回答已采纳

发布于 2012-11-08 05:04:37

也许可以这样尝试：

代码语言：javascript
复制
begin
  ...
rescue Errno::ECONNRESET => e
  ...
rescue => e
  ...
end
票数 1
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/13278133

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