红宝石进度条上传

Question

我有一个执行分块上传的Dropbox CLI api，使用ruby-progressbar作为上传过程的指示器。

它正常工作时，该文件是4MB（默认块大小为分块上传）之下，但它有问题，有什么比是：

from /opt/rubies/2.0.0-p451/lib/ruby/gems/2.0.0/gems/ruby-progressbar-1.2.0/lib/ruby-progressbar/components/progressable.rb:45:in `progress=' 
from /opt/rubies/2.0.0-p451/lib/ruby/gems/2.0.0/gems/ruby-progressbar-1.2.0/lib/ruby-progressbar/base.rb:138:in `with_progressables' 
from /opt/rubies/2.0.0-p451/lib/ruby/gems/2.0.0/gems/ruby-progressbar-1.2.0/lib/ruby-progressbar/base.rb:45:in `block in progress=' 
from /opt/rubies/2.0.0-p451/lib/ruby/gems/2.0.0/gems/ruby-progressbar-1.2.0/lib/ruby-progressbar/base.rb:148:in `with_update' 
from /opt/rubies/2.0.0-p451/lib/ruby/gems/2.0.0/gems/ruby-progressbar-1.2.0/lib/ruby-progressbar/base.rb:45:in `progress=' 
from /Users/peterso/Projects/slipsquare/lib/slipsquare/middleware/chunked_upload.rb:20:in `block in call' 
from /opt/rubies/2.0.0-p451/lib/ruby/gems/2.0.0/gems/dropbox-api-petems-1.1.0/lib/dropbox-api/client/files.rb:50:in `chunked_upload' 

我认为我在做一些愚蠢与总计算，即使上传已经完全大小并完成，我仍然将其添加到进度条的总数中。

但我一直在看它一段时间，我似乎无法找到一种方式从栏获取当前的进度，并将“如果progressbar.current_size + offset> total，完成进度条”。

的代码看起来是这样的：

file_name = env['chunked_upload_file_name'] 
contents = File.open(env['chunked_upload_file_name']) 
total_size = File.size(env['chunked_upload_file_name']) 

say "Total Size: #{total_size} bytes" 
upload_progress_bar = ProgressBar.create(:title => "Upload progress", 
    :format => '%a <%B> %p%% %t', 
    :starting_at => 0, 
    :total => total_size) 

response = env['dropbox-client'].chunked_upload file_name, contents do |offset, upload| 
    upload_progress_bar.progress += offset 
end 

Answer 1

您在每次迭代中添加当前offset到progress。想象一下，你有一个10K的文件并以10个块的形式上传它。在第一次迭代中，我们的offset是0，在接下来的1中，在第三个2中，然后是3。由于您总结了offsets，您的progress将显示60%，尽管它只完成了40%。

，而不是添加offset到progress的，只需设置progress到当前offset：

upload_progress_bar.progress = offset 

或者更正确的，因为偏移告诉上传当前块之前发生了什么上传。

upload_progress_bar.progress = offset + default_chunk_size