Class: Jupiter::Cli::Output

Inherits:
Object
  • Object
show all
Defined in:
lib/jupiter/cli/output.rb

Defined Under Namespace

Classes: InvalidNameError, InvalidSelectionError

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(cli) ⇒ Output

Returns a new instance of Output.



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# File 'lib/jupiter/cli/output.rb', line 7

def initialize(cli)
  self.cli = cli
end

Instance Attribute Details

#cli ⇒ Object

Returns the value of attribute cli.



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# File 'lib/jupiter/cli/output.rb', line 5

def cli
  @cli
end

Instance Method Details

#ask_how_to_clone ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 40

def ask_how_to_clone
  valid_answers = ['1','2']
  task = nil
  until valid_answers.include? task do
    draw_line('', 80, 'Would you like to clone one of these virtual machines or use a template?', 'white', 'cyan')
    draw_new_line
    draw_line('', 80, '1. Clone Virtual Machine', 'white', 'cyan')
    draw_line('', 80, '2. Use a Template', 'white', 'cyan')
    draw_new_line
    task = cli.ask("Please select a number:")
    if valid_answers.include?(task) == false
      puts "\n\n* INVALID ANSWER *\n\n"
    end
  end
  return task
end

#ask_new_vm_name(vmserver) ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 96

def ask_new_vm_name(vmserver)
  draw_line('#', 80, '', 'white', '')
  draw_line('#', 80, "Naming the new virtual machine", 'white', 'green')
  draw_line('#', 80, '', 'white', '')
  draw_new_line
  draw_line('', 80, 'When naming the new virtual machine please use only alpha-numeric', 'white', 'cyan')
  draw_line('', 80, 'characters, dashes and underscores.', 'white', 'cyan')
  draw_new_line
  new_vm_name = cli.ask("\nPlease enter the name of the new virtual machine without spaces:")
  new_vm = Jupiter::Input.new.clean_filename(new_vm_name)
  draw_line('#', 80, '', 'white', '')
  draw_line('#', 80, "The new virtual machine's name will be", 'white', 'cyan')
  draw_line('#', 80, '', 'white', '')
  draw_line(' ', 80, "#{new_vm}", 'white', 'green')
  draw_line('#', 80, '', 'white', '')
  return new_vm
end

#ask_vm_to_clone(vmserver) ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 57

def ask_vm_to_clone(vmserver)
  valid_answers = vmserver.server_vm_list
  list_virtual_machines(vmserver)
  draw_line('#', 80, "Note that these VMs might not all be registered on the server.", 'white', 'red')
  draw_line('#', 80, "You can only clone VMs that are registered.", 'white', 'red')
  draw_line('#', 80, '', 'white', '')
  targetvm = nil
  until valid_answers.include? targetvm do
    targetvm = cli.ask("\nPlease enter the valid name of the virtual machine you wish to clone:")
    if valid_answers.include?(targetvm) == false
      puts "\n\n* INVALID VIRTUAL MACHINE NAME *\n\n"
    end
  end
  return targetvm
end

#ask_which_task ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 23

def ask_which_task
  valid_answers = ['1','2']
  task = nil
  until valid_answers.include? task do
    draw_line('', 80, 'Would you like to create a new virtual machine or work with an existing one?', 'white', 'cyan')
    draw_new_line
    draw_line('', 80, '1. Clone / Create a Virtual Machine     ', 'white', 'cyan')
    draw_line('', 80, '2. Work with an existing Virtual Machine', 'white', 'cyan')
    draw_new_line
    task = cli.ask("Please select a number:")
    if valid_answers.include?(task) == false
      puts "\n\n* INVALID ANSWER *\n\n"
    end
  end
  return task
end

#clearscreen ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 11

def clearscreen
  puts "\e[H\e[2J" # ANSI escape sequence to clear screen
end

#draw_line(character, length, text, color1, color2) ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 155

def draw_line(character, length, text, color1, color2)
  line_minus_text   = length - text.length
  half_line         = line_minus_text / 2
  line_segment1     = half_line - 1
  line_segment2     = half_line - 1
  line_to_messure   = %Q[#{character * line_segment1} #{text} #{character * line_segment2}]

  line_segment2     += 1 if line_to_messure.length < length 

  if color1.empty? && text.empty?
    output_line = character * length
  elsif color1.empty? && text.length > 0
    output_line = %Q[#{character * line_segment1} #{text} #{character * line_segment2}]
  elsif text.empty?
    output_line     = character * length
    output_line     = Colorizer.color(color1, output_line)
  else
    line_segment1     = character * line_segment1
    line_segment2     = character * line_segment2
    line_segment1     = Colorizer.color(color1, line_segment1)
    line_segment2     = Colorizer.color(color1, line_segment2)
    text              = Colorizer.color(color2, text)
    output_line       = %Q[#{line_segment1} #{text} #{line_segment2}]
  end

  puts output_line
end

#draw_menu ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 15

def draw_menu
  draw_line('#', 80, '', 'white', '')
  draw_line('#', 80, 'WELCOME TO JUPITER', 'white', 'green')
  draw_line('#', 80, '', 'white', '')
  draw_line('#', 80, "We hope the god of sky and thunder will make your day most good and stuff.", 'white', 'green')
  draw_line('#', 80, '', 'white', '')
end

#draw_new_line ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 151

def draw_new_line
  puts "\n"
end

#list_virtual_machines(vmserver) ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 127

def list_virtual_machines(vmserver)
  draw_line('#', 80, '', 'white', '')
  draw_line('#', 80, "These are the currect virtual machines found on #{vmserver.name}", 'white', 'green')
  draw_line('#', 80, '', 'white', '')
  draw_new_line
  vmserver.server_vm_list.each { |x| puts "* #{x}" }
  draw_new_line
  draw_line('#', 80, '', 'white', '')
end

#manage_host(vmserver, options) ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 303

def manage_host(vmserver, options)

  list_virtual_machines(vmserver)
  clone_from = ask_how_to_clone

  if clone_from == '1'
    targetvm      = ask_vm_to_clone(vmserver)
    new_vm_name   = ask_new_vm_name(vmserver)
    vm_current_state(vmserver, targetvm)
    return if options[:pretend]

    puts %Q[\nStarting cloning of #{targetvm} to a new virtual machine called #{new_vm_name}. This may take some time. Please wait...]
    time = Benchmark.realtime {
      vmserver.clone_vm(targetvm, new_vm_name)
    }
    puts %Q[\nFinished cloning.]
    puts %Q[\nElapses time: #{time}\n]
    puts %Q[\nNow booting the new VM...\n]
    sleep 10

    show_vm_ip(vmserver, new_vm_name)

    newname = cli.ask("\n#{new_vm_name} is the name used by the ESX server to reference the VM but we need to also change the VM's actually hostname.\nPlease enter a valid hostname for the new virtual machine: (lowercase with no spaces or special characters)")
    ip = vmserver.guest_ip(new_vm_name)
    vm = Jupiter::VirtualMachine.new(ip, 2500)
    puts vm.rename_linux_guest(newname)
    draw_line('#', 80, '', 'white', '')

  elsif clone_from == '2'
    templatehost = Jupiter::Template.new(vmserver)
    templatevm = show_templates_available(templatehost)
    new_vm_name = ask_new_vm_name(vmserver)
    templatelist = templatehost.templates_list
    raise InvalidNameError.new("#{new_vm_name} is already taken as a name.") if templatelist.include?(new_vm_name) 
    puts %Q[\nConnecting to template share on #{templatehost.host} to transfer template.]
    puts %Q[The transfer may take some time depending on the file size and bandwidth...]
    return if options[:pretend]
    puts templatehost.transfer_template(templatevm, new_vm_name)
    sleep 10 # Give time for new VM to spinup before offering managment menu
    manage_vm(vmserver, options)
  else
    puts %Q[\n"#{clone_from}" is not a valid option. Exiting...\n]
    return
  end
end

#manage_vm(vmserver, options) ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 183

def manage_vm(vmserver, options)
  if options[:guest].nil?
    vmname = select_vm_to_manage(vmserver) 
  else
    vmname = options[:guest]
  end
  vmstate = vm_current_state(vmserver, vmname)
  return if options[:pretend]

  if vmstate != 'running'
    power_on = cli.ask("\nWould you like to power on #{vmname}? (yes/no)\n")
    if power_on == 'yes'
      vmserver.power_on_vm(vmname)
    elsif power_on == 'no'
      puts %Q[\nSince #{vmname} is not powered on some options will not be available.\n]
    else
      puts %Q[\nNot a valid response. Exiting...\n]
      return
    end
  end
  draw_new_line
  draw_line('#', 80, '', 'white', '')
  draw_line('#', 80, "Please select a task to perform on #{vmname}", 'white', 'green')
  draw_line('#', 80, '', 'white', '')
  draw_new_line
  puts %Q[  1. Change hostname\n]
  puts %Q[  2. Reboot (graceful restart)\n]
  puts %Q[  3. Shutdown (graceful stop)\n]
  puts %Q[  4. Cycle Power (non-graceful restart)\n]
  puts %Q[  5. Kill Power (non-graceful)\n]
  puts %Q[  6. Remove deploy user from sudoers\n]
  puts %Q[  7. Display current IP address of #{vmname}\n]
  puts %Q[  8. Increase the alocated HD space for #{vmname} (VM must be off)\n]
  puts %Q[  9. Grow the LVM partition to fill the HD on #{vmname}\n]
  puts %Q[ 10. Generate Nagios config file for #{vmname}\n]
  choice = cli.ask("\n  Enter Choice:").to_i

  case choice
  when 1
    newname = cli.ask("\nPlease enter a valid hostname for the new virtual machine (lowercase with no spaces or special characters): ")
    new_hostname = Jupiter::Input.new.clean_filename(newname)
    draw_line('#', 80, '', 'white', '')
    draw_line('#', 80, "The new hostname will be", 'white', 'cyan')
    draw_line('#', 80, '', 'white', '')
    draw_line(' ', 80, "#{new_hostname}", 'white', 'green')
    draw_line('#', 80, '', 'white', '')
    ip = vmserver.guest_ip(vmname)
    vm = Jupiter::VirtualMachine.new(ip, 2500)
    puts vm.rename_linux_guest(new_hostname)
    manage_vm(vmserver, options)
  when 2
    puts %Q[\nSending reboot command to #{vmname}...\n]
    vmserver.reboot_vm(vmname)
  when 3
    puts %Q[\nSending shutdown command to #{vmname}...\n]
    vmserver.shutdown_vm(vmname)
  when 4
    cycle = cli.ask("\nAre you sure? Only use this option if the system is locked up. Otherwise use the standard restart options for the guest OS. (yes / no): ")
    if cycle == 'yes'
      puts %Q[\nCycling the power for #{vmname}...\n]
      vmserver.power_cycle_vm(vmname)
    else
      puts %[\nExiting...\n]
      return
    end
  when 5
    kill = cli.ask("\nAre you sure? (yes / no): ")
    if kill == 'yes'
      puts %Q[\nKilling power for #{vmname}...\n]
      vmserver.power_off_vm(vmname)
    else
      puts %[\nExiting...\n]
      return
    end
  when 6
    ip = vmserver.guest_ip(vmname)
    vm = Jupiter::VirtualMachine.new(ip, 2500)
    puts vm.remove_from_sudo_group('deploy')
    manage_vm(vmserver, options)
  when 7
    puts vmserver.guest_ip(vmname)
    manage_vm(vmserver, options)
  when 8
    current_size = vmserver.vmdk_size(vmname)
    puts %Q[\nThe current HD size is #{current_size} GB.\n]
    size_in_gb = cli.ask(%Q[\nPlease enter the new size for the virtual HD in gigabytes: ])
    vmserver.resize_vmdk(vmname, size_in_gb)
    new_size = vmserver.vmdk_size(vmname)
    puts %Q[\nThe new HD size is #{new_size} GB.\n]
    manage_vm(vmserver, options)
  when 9
    ip = vmserver.guest_ip(vmname)
    vm = Jupiter::VirtualMachine.new(ip, 2500)
    puts vm.resize_lvm_volume_step_1
    vmserver.reboot_vm(vmname)
    sleep 45
    puts vm.resize_lvm_volume_step_2
    manage_vm(vmserver, options)
  when 10
    draw_new_line
    draw_line('#', 80, '', 'white', '')
    draw_line('#', 80, "Nagios File Generation", 'white', 'cyan')
    draw_line('#', 80, '', 'white', '')
    draw_line(' ', 80, "This will generate a Nagios object entry that can be pasted into", 'white', 'green')
    draw_line(' ', 80, "your nagios config or uploaded to your nagios server if a proper", 'white', 'green')
    draw_line(' ', 80, "nagios server entry is in your Jupiter yaml file.", 'white', 'green')
    draw_new_line
    draw_line(' ', 80, "This will also only be valid if your system has a static IP address and", 'white', 'green')
    draw_line(' ', 80, "the services will only be functional if the nagios client is installed.", 'white', 'green')
    draw_line('#', 80, '', 'white', '')
    nagios_choice = cli.ask("\n  Enter 1 to display Nagios entry or 2 to upload to Nagios Server:").to_i
    nagios = Jupiter::Nagios.new
    nagios.action(nagios_choice, vmname, vmname, vmserver.guest_ip(vmname))
    manage_vm(vmserver, options)
  else
    puts %[\nInvalid choice. Exiting...\n]
    return
  end
end

#select_vm_to_manage(vmserver) ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 73

def select_vm_to_manage(vmserver)
  vm_list = vmserver.server_vm_list
  draw_line('#', 80, '', 'white', '')
  draw_line('#', 80, "These are the currect virtual machines found on #{vmserver.name}", 'white', 'green')
  draw_line('#', 80, '', 'white', '')
  draw_new_line
  vm_list.each_index { |x| puts "#{x + 1}. #{vm_list[x]}" }
  draw_new_line
  draw_line('#', 80, '', 'white', '')
  targetvm  = cli.ask("\nPlease select the number of the Virtual Machine you wish to manage:")
  target    = targetvm.to_i - 1
  if vm_list[target].nil? || target < 0
    raise InvalidSelectionError.new("Not a valid selection.")
  else
    targetvm = vmserver.server_vm_list[target].to_s
    draw_new_line
    draw_line('#', 80, '', 'white', '')
    draw_line('#', 80, "#{targetvm} is selected for managment", 'white', 'green')
    draw_line('#', 80, '', 'white', '')
    return targetvm
  end
end

#show_templates_available(templatehost) ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 137

def show_templates_available(templatehost)
  templatevm = ''
  templatelist = templatehost.templates_list
  draw_line('#', 80, '', 'white', '')
  draw_line('#', 80, "These are the currect templates found on #{templatehost.host}", 'white', 'green')
  draw_line('#', 80, '', 'white', '')
  draw_new_line
  templatelist.each { |x| puts "* #{x.gsub('.tar.gz','')}" }
  while templatelist.include?(templatevm + '.tar.gz') == false do
    templatevm = cli.ask("\nPlease enter the valid name of the template you wish to use:")
  end
  return templatevm
end

#show_vm_ip(vmserver, vm) ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 120

def show_vm_ip(vmserver, vm)
  draw_line('#', 80, '', 'white', '')
  draw_line('#', 80, "#{vm}'s current IP is: #{vmserver.guest_ip(vm)}", 'white', 'green')
  draw_line('#', 80, '', 'white', '')
  draw_new_line
end

#vm_current_state(vmserver, targetvm) ⇒ Object 



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# File 'lib/jupiter/cli/output.rb', line 114

def vm_current_state(vmserver, targetvm)
  puts %Q[\nConnecting to VMware host server #{vmserver.name}...]
  puts %Q[\n#{targetvm}'s current state is "#{vmserver.vm_state(targetvm)}"\nNote that this is only valid if VMware Tools is running on the virtual machine.\nIf the kernel has been upgraded recently, you many need to run vmware-config-tools.pl again.]
  return vmserver.vm_state(targetvm)
end