Class: GlTail::Source::SSH

Inherits:
Base
  • Object
show all
Defined in:
lib/gl_tail/sources/ssh.rb

Instance Attribute Summary

Attributes inherited from Base

#config, #name, #parser

Instance Method Summary collapse

Methods inherited from Base

#add_activity, #add_event, #initialize

Methods included from Configurable

#config_rewrite_color, included

Constructor Details

This class inherits a constructor from GlTail::Source::Base

Instance Method Details

#do_tail(file, command) ⇒ Object 



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# File 'lib/gl_tail/sources/ssh.rb', line 79

def do_tail( file, command )
  @session.open_channel do |channel|
    puts "Channel opened on #{@session.host}...\n" if($VRB > 0 || $DBG > 0)

    @buffer = ""
    channel.request_pty :want_reply => true

    channel.on_data do |ch, data|
      @buffer << data
      parse_line(data)
    end

    channel.on_success do |ch|
      channel.exec "#{command} #{file}  "
    end

    channel.on_failure do |ch|
      ch.close
    end

    channel.on_extended_data do |ch, data|
      puts "STDERR: #{data}\n"
    end

    channel.on_close do |ch|
      ch[:closed] = true
    end

    puts "Pushing #{host}\n" if($VRB > 0 || $DBG > 0)
    @channels.push(channel)
  end
end

#init ⇒ Object 



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# File 'lib/gl_tail/sources/ssh.rb', line 17

def init

  @channels = []

  puts "Connecting to #{host}..." if($VRB > 0 || $DBG > 0)

  session_options = { }
  session_options[:port] = port if port
  session_options[:keys] = keys if keys
  session_options[:verbose] = :debug if $DBG > 1

  begin
    if password
      session_options[:auth_methods] = [ "password","keyboard-interactive" ]

      @session = Net::SSH.start(host, user, password, session_options)
    else
      @session = Net::SSH.start(host, user, session_options)
    end
  rescue SocketError => e
    puts "!!! Could not connect to #{host}. Check to make sure that this is the correct url."
    puts $! if $DBG > 0
    exit
  rescue Net::SSH::AuthenticationFailed => e
    puts "!!! Could not authenticate on #{host}. Make sure you have set the username and password correctly. Or if you are using SSH keys make sure you have not set a password."
    puts $! if $DBG > 0
    exit
  end

  # FIXME: add support for multiple files (eg. write files accessor)
  do_tail(files, command)

  @session.connection.process
end

#parse_line(data) ⇒ Object 



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# File 'lib/gl_tail/sources/ssh.rb', line 60

def parse_line(data)
  @buffer.gsub(/\r\n/,"\n").gsub(/\n/, "\n\n").each("") do |line|

    unless line.include? "\n\n"
      @buffer = "#{line}"
      next
    end

    line.gsub!(/\n\n/, "\n")
    line.gsub!(/\n\n/, "\n")

    puts "#{host}[#{user}]: #{line}" if $DBG > 0

    parser.parse(line)
  end

  @buffer = "" if @buffer.include? "\n"
end

#process ⇒ Object 



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# File 'lib/gl_tail/sources/ssh.rb', line 52

def process
  @session.connection.process(true)
end

#update ⇒ Object 



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# File 'lib/gl_tail/sources/ssh.rb', line 56

def update
  @channels.each { |ch| ch.connection.ping! }
end