Question

我试图将输入和处理分成两部分，以便不必指定提示（如wait_for）。问题是收到命令但从未处理过。从get_input线程调用通道进程（它在on_process中打印puts）但什么都没发生。

（on_process仅在调用on_data之后调用一次，然后通道才处于活动状态？= =此时仍为true）

ENV['PATH'] = 'H:\mydocu~1\usrbin\ansi140\x86;' + ENV['PATH']
`ansicon.exe -p`

require 'net/ssh'

hostname = "server"
username = "user"
password = "password"

@data = ''
@print = true
@cmd = ''

#clear the log
File.open('ssh_command.log', 'w') {|f| f.write('')}


get_input = Thread.new { 
      while true
        @cmd = nonblocking_stdin_gets
        exit if @cmd.strip == "Q"
        File.open('ssh_command.log', 'a+') { |f| f.write("{#{@cmd}}") } 
        if @cmd.rstrip != '' or @cmd =~ /\r?\n/
          puts "sending..."
          @print = false
          @openchannel.process
        end
      end 
    }

if RUBY_PLATFORM =~ /win32/
  require 'Win32API'
  $win32_console_kbhit = Win32API.new("msvcrt", "_kbhit", [], 'I')
  def console_input_ready?
    $win32_console_kbhit.call != 0
  end
  def nonblocking_stdin_gets
    sleep(0.1) until console_input_ready?
    $stdin.gets # don't bother to use getc, it also blocks until user hits <return>
  end
else
  def nonblocking_stdin_gets
    $stdin.gets # it just works, on unix
  end
end

@openchannel = nil

Net::SSH.start(hostname, username, :password => password) do |session|

  @openchannel = session.open_channel do |channel|

    channel.on_data do |ch, data|
      @data += data
    end 

    channel.on_extended_data do |ch, type, data|
      puts "got stderr: #{data}"
    end

    channel.on_request "exit-status" do |ch, data|
      puts "process terminated with exit status: #{data.read_long}"
    end

    channel.on_open_failed { |ch, code, desc| puts "err: #{desc}" }

    # must come before shell
    channel.request_pty :term => "xterm" do |ch, success|
      if success
        puts "pty successfully obtained"
      else
        puts "could not obtain pty"
      end
    end

    channel.send_channel_request "shell" do |ch, success|
      if success
        puts "user shell started successfully"
      else
        puts "could not start user shell"
      end
    end

    channel.on_eof do |ch|
      puts "remote end is done sending data"
    end

    channel.on_close do |ch|
      puts "channel is closing!"
    end

    channel.on_process do |ch|
      print @data if @print
      puts "command:#{@cmd}"
      if @cmd.rstrip != '' or @cmd =~ /\r?\n/
        #system("cls")
        channel.send_data(@cmd.rstrip + "\r\n")
        @cmd = ''
        @print = true
      else
        puts "no command"
      end 
    end

  end #channel_end
  session.loop 
end #session_end

Answer 1

所以我想通了，处理事件只在收到数据后运行，而send_data只添加到数据队列

所以要确保过程事件多次运行...... 添加这个

session.loop(0.1)

ruby net / ssh channel死了吗？

1 个答案: