处理超时错误

Question

使用超时后:

 status = Timeout::timeout(5) {
  # Something that should be interrupted if it takes too much time...
}

我收到了这个超时错误:

/Users/galharth/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/net/http.rb:644:in `initialize': execution expired (Timeout::Error)
    from /Users/galharth/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/net/http.rb:644:in `open'
    from /Users/galharth/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/net/http.rb:644:in `block in connect'
    from /Users/galharth/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/timeout.rb:44:in `timeout'
    from /Users/galharth/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/timeout.rb:87:in `timeout'
    from /Users/galharth/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/net/http.rb:644:in `connect'
    from /Users/galharth/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/net/http.rb:637:in `do_start'
    from /Users/galharth/.rvm/rubies/ruby-1.9.2-p136/lib/ruby/1.9.1/net/http.rb:632:in `start'
    from /Users/galharth/.rvm/gems/ruby-1.9.2-p136/gems/mechanize-1.0.0/lib/mechanize.rb:527:in `fetch_page'
    from /Users/galharth/.rvm/gems/ruby-1.9.2-p136/gems/mechanize-1.0.0/lib/mechanize.rb:259:in `get'

我该怎么办？

Answer 1

嗯,这是预期的行为Timeout.如果块花费的时间太长,则会终止执行并抛出异常.

您可能希望捕获异常并正确处理它:

require 'timeout'
begin
  status = Timeout::timeout(5) {
    # Something that should be interrupted if it takes too much time...
  }
rescue Timeout::Error
  puts 'That took too long, exiting...'
end