Class: Webbynode::Ssh

Inherits:
Object show all
Defined in:
lib/webbynode/ssh.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(remote_ip, user = 'git', port = 22) ⇒ Ssh

Returns a new instance of Ssh.



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# File 'lib/webbynode/ssh.rb', line 5

def initialize(remote_ip, user='git', port=22)
  @remote_ip = remote_ip
  @user = user
  @port = port
end

Instance Attribute Details

#port ⇒ Object

Returns the value of attribute port.



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# File 'lib/webbynode/ssh.rb', line 3

def port
  @port
end

#remote_ip ⇒ Object

Returns the value of attribute remote_ip.



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# File 'lib/webbynode/ssh.rb', line 3

def remote_ip
  @remote_ip
end

#user ⇒ Object

Returns the value of attribute user.



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# File 'lib/webbynode/ssh.rb', line 3

def user
  @user
end

Instance Method Details

#connect ⇒ Object 



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# File 'lib/webbynode/ssh.rb', line 15

def connect
  raise "No IP given" unless @remote_ip
  @conn = nil if @conn and @conn.closed?
  @conn ||= Net::SSH.start(@remote_ip, @user, :port => @port, :auth_methods => %w(publickey hostbased))
rescue Net::SSH::AuthenticationFailed
  HighLine.track_eof = false
  
  begin
    @password ||= ask("Enter your deployment password for #{@user}@#{@remote_ip}: ") { |q| q.echo = '' }
    @conn     ||= Net::SSH.start(@remote_ip, @user, :port => @port, :password => @password)  
  rescue Net::SSH::AuthenticationFailed
    io.log "Could not connect to server: invalid authentication."
    exit
  end
  
rescue Net::SSH::Disconnect
  io.log "Could not connect to the server: Wrong IP or Server Offline."
  exit

end

#console(app_name) ⇒ Object 



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# File 'lib/webbynode/ssh.rb', line 62

def console(app_name)
  connect
  input = 'something'
  ch = @conn.open_channel do |ch|
    ch.request_pty do |ch, success|
      abort "Error requesting pty" unless success
    end

    ch.env "PATH", "/usr/bin:/usr/local/bin:/opt/ruby-enterprise/bin"
    ch.exec "cd #{app_name} && rails console production" do |ch, success|
      abort "Could not connect to rails console" unless success

      ch.on_data do |ch, data|
        next if data.chomp == input.chomp || data.chomp == ''
        if data =~ /^irb(.*)[\>|\*] /
          prompt = ''
          data.chars.each_with_index do |s, i|
            if s =~ /^irb(.*)[\>|\*] /
              prompt = s
            else
              print s unless s.chomp == input.chomp
            end
          end

          # print data
          input = "#{Readline.readline(prompt, true)}\n" 
          ch.send_data(input) 
        else
          puts data
        end
      end

      ch.on_extended_data do |ch, type, data|
        puts data
      end
    end

    @conn.loop
  end
  
  begin
    ch.wait
  rescue SystemExit, Interrupt
    ch.send_data(Net::SSH::Connection::Term::VINTR)
    ch.send_data("quit\n")
    
    puts ""
    puts "Console done."
  rescue Exception => e
    puts "Error: #{$!.message}"
  end
end

#execute(script, echo = false, ret_exit_code = false) ⇒ Object 



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# File 'lib/webbynode/ssh.rb', line 115

def execute(script, echo=false, ret_exit_code=false)
  connect
  output = ""
  error_output = ""
  
  exit_code = nil
  channel = @conn.open_channel do |chan|
    chan.on_request('exit-status') do |ch, data|
      exit_code = data.read_long
    end
    
    chan.on_data do |ch, data|
      puts data if echo
      output << data
    end
    
    chan.on_extended_data do |ch, type, data|
      next unless type == 1  # only handle stderr
      puts data if echo
      output << data
      error_output << data
    end
    
    chan.exec("#{script} < /dev/null") do |ch, s|
      raise Exceptions::SshInstallationError, "Error executing script \"#{script[:name]}\"" unless s
    end
  end
  
  channel.wait
  
  return exit_code if ret_exit_code
  output
end

#io ⇒ Object 



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# File 'lib/webbynode/ssh.rb', line 11

def io
  @io ||= Webbynode::Io.new
end

#logs(app_name) ⇒ Object 



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# File 'lib/webbynode/ssh.rb', line 36

def logs(app_name)
  connect
  ch = @conn.open_channel do |ssh|
    ch.request_pty
    ch.exec "cd #{app_name}; tail -f log/production.log" do |ch, success|
      abort "Could not connect to rails app" unless success

      ch.on_data          { |ch, data| puts data}
      ch.on_extended_data { |ch, type, data| puts data }
    end

    @conn.loop
  end
    
  begin
    ch.wait
  rescue SystemExit, Interrupt
    ch.send_data(Net::SSH::Connection::Term::VINTR)
    
    puts ""
    puts ""
    puts "Logging done."
  rescue Exception => e
  end
end