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如何覆盖红宝石ftp服务器上的现有文件？

2012-02-13 109 views
0

我无法连续两次上传同一个文件（第二次，内容更新），我得到以下内容，我该如何解决？如何覆盖红宝石ftp服务器上的现有文件？

Connected successfully uploading file: /tmp/Mall_bill_extract_20120213_170429_2.csv 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-sftp-2.0.5/lib/net/sftp/operations/upload.rb:313:in `on_open' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `to_proc' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-sftp-2.0.5/lib/net/sftp/request.rb:87:in `call' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-sftp-2.0.5/lib/net/sftp/request.rb:87:in `respond_to' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:948:in `dispatch_request' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:911:in `when_channel_polled' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `to_proc' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-ssh-2.2.1/lib/net/ssh/connection/channel.rb:311:in `call' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-ssh-2.2.1/lib/net/ssh/connection/channel.rb:311:in `process' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-ssh-2.2.1/lib/net/ssh/connection/session.rb:214:in `preprocess' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-ssh-2.2.1/lib/net/ssh/connection/session.rb:214:in `each' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-ssh-2.2.1/lib/net/ssh/connection/session.rb:214:in `preprocess' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-ssh-2.2.1/lib/net/ssh/connection/session.rb:197:in `process' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-ssh-2.2.1/lib/net/ssh/connection/session.rb:161:in `loop' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-ssh-2.2.1/lib/net/ssh/connection/session.rb:161:in `loop_forever' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-ssh-2.2.1/lib/net/ssh/connection/session.rb:161:in `loop' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-sftp-2.0.5/lib/net/sftp/session.rb:802:in `loop' 
/Users/kamilski81/.rvm/gems/[email protected]_mall/gems/net-sftp-2.0.5/lib/net/sftp.rb:35:in `start' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/app/controllers/report_purchases_employer_controller.rb:139:in `export_to_bill_csv' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/base.rb:1253:in `send' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/base.rb:1253:in `perform_action_without_filters' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/filters.rb:617:in `call_filters' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/filters.rb:610:in `perform_action_without_benchmark' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/benchmark.rb:293:in `measure' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/benchmarking.rb:68:in `perform_action_without_rescue' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/rescue.rb:136:in `perform_action_without_caching' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/caching/sql_cache.rb:13:in `perform_action' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb:34:in `cache' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/activerecord/lib/active_record/query_cache.rb:8:in `cache' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/caching/sql_cache.rb:12:in `perform_action' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/base.rb:524:in `send' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/base.rb:524:in `process_without_filters' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/filters.rb:606:in `process_without_session_management_support' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/session_management.rb:134:in `process' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/base.rb:392:in `process' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:183:in `handle_request' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:110:in `dispatch_unlocked' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:123:in `dispatch' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:122:in `synchronize' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:122:in `dispatch' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:132:in `dispatch_cgi' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/actionpack/lib/action_controller/dispatcher.rb:39:in `dispatch' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/railties/lib/webrick_server.rb:103:in `handle_dispatch' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/railties/lib/webrick_server.rb:74:in `service' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/webrick/httpserver.rb:104:in `service' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/webrick/httpserver.rb:65:in `run' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/webrick/server.rb:173:in `start_thread' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/webrick/server.rb:162:in `start' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/webrick/server.rb:162:in `start_thread' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/webrick/server.rb:95:in `start' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/webrick/server.rb:92:in `each' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/webrick/server.rb:92:in `start' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/webrick/server.rb:23:in `start' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/1.8/webrick/server.rb:82:in `start' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/railties/lib/webrick_server.rb:60:in `dispatch' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/railties/lib/commands/servers/webrick.rb:66 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/activesupport/lib/active_support/dependencies.rb:153:in `require' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/activesupport/lib/active_support/dependencies.rb:521:in `new_constants_in' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/activesupport/lib/active_support/dependencies.rb:153:in `require' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/vendor/rails/railties/lib/commands/server.rb:49 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require' 
/Users/kamilski81/.rvm/rubies/ruby-1.8.7-p352/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' 
/Users/kamilski81/Sites/pe/rails-apps/vitality_mall/script/server:3 
/Users/kamilski81/.rvm/gems/[email protected]/gems/ruby-debug-ide-0.4.17.beta5/lib/ruby-debug-ide.rb:112:in `debug_load' 
/Users/kamilski81/.rvm/gems/[email protected]/gems/ruby-debug-ide-0.4.17.beta5/lib/ruby-debug-ide.rb:112:in `debug_program' 
/Users/kamilski81/.rvm/gems/[email protected]/gems/ruby-debug-ide-0.4.17.beta5/bin/rdebug-ide:87 
-e:1:in `load' 
-e:1

这里是代码：

begin 
    Net::SFTP.start('localhost', 'user', :password=>'pass') do |sftp| 
    sftp.upload file_location, "/test/outbound_transactions/#{file_name}" 
    end 
rescue => ex 
    puts ex.backtrace 
end

来源

2012-02-13 Kamilski81

+0

你能发布失败的代码而不是堆栈跟踪吗？ – 2012-02-13 23:48:01

回答

1

对于数据安全，你应该：

  1. 上传新文件到一个临时文件名。
  2. 将原件重命名为.bak版本。
  3. 将新上传的版本重命名为原始名称。
  4. 删除原件。

原因是，如果代码或连接出于某种原因失败，您希望有一个版本可用。

这也可以解决您所看到的问题。

我看到FTP主机在文件上传后立即锁定文件。我不知道为什么，因为当他们的服务器搞砸了，它使我无法删除文件。因此，他们可能会在上传后立即锁定/更改权限或更改文件的所有权。

因为我们没有收到包含在ex中的消息，回溯并没有太大帮助。你应该这样做：

puts ex.message

或：

puts ex.to_s

的puts ex.backtrace之前得到实际的消息。

引发异常的代码并没有告诉我们很多之一：

# Called when an +open+ request finishes. Raises StatusException if the 
# open failed, otherwise it calls #write_next_chunk to begin sending 
# data to the remote server. 
def on_open(response) 
    @active -= 1 
    file = response.request[:file] 
    raise StatusException.new(response, "open #{file.remote}") unless response.ok? 
    [...]

所以puts ex.message会帮助你。

另外，upload是异步的，因此您可能需要添加wait。这是从the docs：

异步启动从本地上传到远程。此方法将返回一个新的Net :: SFTP :: Operations :: Upload实例，并且需要运行事件循环才能使上载进行。有关如何使用此方法的完整讨论，请参阅Net :: SFTP :: Operations :: Upload。

uploader = sftp.upload("/local/path", "/remote/path") 
    uploader.wait

来源

2012-02-14 18:46:51

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