Module: Gogetit::Util

Included in:
CLI, Config, GogetLXD, GogetLibvirt
Defined in:
lib/gogetit/util.rb

Instance Method Summary collapse

Instance Method Details

#check_ip_available(addresses, maas) ⇒ Object 



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# File 'lib/gogetit/util.rb', line 210

def check_ip_available(addresses, maas)
  logger.info("Calling <#{__method__.to_s}>")
  # to do a ping test
  addresses.each do |ip|
    abort("#{ip} is already being used.") if ping_available?(ip)
  end
  # to check with MAAS
  ifaces = maas.ip_reserved?(addresses)
  abort("one of #{addresses.join(', ')} is already being used.") \
    unless ifaces
  return ifaces
end

#get_gateway(version) ⇒ Object 



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# File 'lib/gogetit/util.rb', line 161

def get_gateway(version)
  IO.popen("ip -#{version.to_s} route").read.each_line do |route|
    if route.include? 'default'
      route.split[2]
    else
      'There is no get_gateway!'
      nil
    end
  end
end

#get_http_content(url) ⇒ Object 



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# File 'lib/gogetit/util.rb', line 48

def get_http_content(url)
  logger.info("Calling <#{__method__.to_s}> to get #{url}")

  uri = URI.parse(url)

  if is_port_open?(uri.host, uri.port)
    http = Net::HTTP.new(uri.host, uri.port)
    res = http.request_post(uri.path, nil)
    if res.code == "200"
      res.body
    else
      logger.error("Unable to reach the content of #{url}.")
      false
    end
  else
    logger.error("Unable to reach the server: #{uri.host} or port: #{uri.port}.")
    false
  end
end

#get_provider_of(name, providers) ⇒ Object 



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# File 'lib/gogetit/util.rb', line 16

def get_provider_of(name, providers)
  logger.info("Calling <#{__method__.to_s}> #{name}")
  if providers[:lxd].container_exists?(name)
    logger.info("It is a LXD container.")
    return 'lxd'
  elsif providers[:libvirt].domain_exists?(name)
    logger.info("It is a KVM domain.")
    return 'libvirt'
  else
    puts "#{name} is not found"
    return nil
  end
end

#is_port_open?(ip, port) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gogetit/util.rb', line 30

def is_port_open?(ip, port)
  logger.info("Calling <#{__method__.to_s}> to check #{ip}:#{port}")
  begin
    Timeout::timeout(1) do
      begin
        s = TCPSocket.new(ip, port)
        s.close
        return true
      rescue Errno::ECONNREFUSED, Errno::EHOSTUNREACH, SocketError
        return false
      end
    end
  rescue Timeout::Error
  end

  return false
end

#knife_bootstrap(name, provider, config) ⇒ Object 



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# File 'lib/gogetit/util.rb', line 68

def knife_bootstrap(name, provider, config)
  logger.info("Calling <#{__method__.to_s}>")
  config[:chef][:target_environment] ||= '_default'
  if find_executable 'knife'
    if system('knife ssl check')
      install_cmd = "curl \
      -l #{config[:chef][:bootstrap][:install_script][provider.to_sym]} \
      | sudo bash -s --"
      knife_cmd = "knife bootstrap -y #{name} \
      --node-name #{name} \
      --ssh-user ubuntu \
      --sudo \
      --environment #{config[:chef][:target_environment]} \
      --bootstrap-install-command \"#{install_cmd}\"".gsub(/ * /, ' ')
      puts 'Bootstrapping..'
      puts knife_cmd
      system(knife_cmd)
    end
  end
end

#knife_remove(name) ⇒ Object 



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# File 'lib/gogetit/util.rb', line 149

def knife_remove(name)
  logger.info("Calling <#{__method__.to_s}>")
  if find_executable 'knife'
    if system('knife ssl check')
      puts "Deleting node #{name}.."
      system("knife node delete -y #{name}")
      puts "Deleting client #{name}.."
      system("knife client delete -y #{name}")
    end
  end
end

#ping_available?(host) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gogetit/util.rb', line 187

def ping_available?(host)
  # host can be both IP and ip_or_fqdn.
  logger.info("Calling <#{__method__.to_s}> for #{host}")
  `ping -c 1 -W 1 #{host}`
  $?.exitstatus == 0
end

#run_command(cmd) ⇒ Object 



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# File 'lib/gogetit/util.rb', line 11

def run_command(cmd)
  logger.info("Calling <#{__method__.to_s}> to run '#{cmd}'")
  system(cmd)
end

#run_through_ssh(host, distro_name, commands) ⇒ Object 



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# File 'lib/gogetit/util.rb', line 223

def run_through_ssh(host, distro_name, commands)
  logger.info("Calling <#{__method__.to_s}>")
  Net::SSH.start(host, distro_name) do |ssh|
    commands.each do |cmd|
      logger.info("'#{cmd}' is being executed..")
      output = ssh.exec!(cmd)
      puts output if output != ''
    end
  end
end

#ssh_available?(ip_or_fqdn, user) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/gogetit/util.rb', line 194

def ssh_available?(ip_or_fqdn, user)
  logger.info("Calling <#{__method__.to_s}> for #{user}@#{ip_or_fqdn}")
  begin
    Net::SSH.start(
      ip_or_fqdn,
      user,
      :keys_only => true,
      :number_of_password_prompts => 0
    )
  rescue Exception => e
    puts e
    return false
  end
  true
end

#update_databags(config) ⇒ Object 



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# File 'lib/gogetit/util.rb', line 89

def update_databags(config)
  logger.info("Calling <#{__method__.to_s}>")
  data_bags_dir = "#{config[:chef][:chef_repo_root]}/data_bags"

  puts 'Listing databags..'
  databags_as_is = `knife data bag list`.split
  databags_to_be = Dir.entries(data_bags_dir) - ['.', '..']

  puts 'Checking databags to delete..'
  (databags_as_is - databags_to_be).each do |bag|
    puts "Deleting databag '#{bag}'.."
      answer = ask(
        'Do you really want to delete this?',
        :echo => true,
        :limited_to => ['y', 'n']
      )
      case answer
      when 'y'
        run_command("knife data bag delete -y #{bag}")
      when 'n'
        puts 'Keeping..'
      end
  end

  puts 'Checking databags to create..'
  (databags_to_be - databags_as_is).each do |bag|
    puts "Creating databag '#{bag}'.."
    run_command("knife data bag create #{bag}")
  end

  puts 'Checking items..'
  databags_to_be.each do |bag|
    items_as_is = `knife data bag show #{bag}`.split
    Dir.entries(data_bags_dir+'/'+bag).select do |file|
      /^.*\.json/.match(file)
    end.each do |item|
      item_file = data_bags_dir+'/'+bag+'/'+item
      item = item.gsub('.json', '')
      if JSON.parse(File.read(item_file))['vault']
        if items_as_is.include? item
          run_command(
            "knife vault update #{bag} #{item} --json #{item_file}"\
            " --search '*:*' -M client"
          )
        else
          run_command(
            "knife vault create #{bag} #{item} --json #{item_file}"\
            " --search '*:*' -M client"
          )
        end
        run_command(
          "knife vault refresh #{bag} #{item} --clean-unknown-clients -M client"
        )
      else
        run_command("knife data bag from file #{bag} #{item_file}")
      end
    end
  end
end

#wait_until_available(ip_or_fqdn, distro_name) ⇒ Object 



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# File 'lib/gogetit/util.rb', line 172

def wait_until_available(ip_or_fqdn, distro_name)
  logger.info("Calling <#{__method__.to_s}> for network connection..")
  until ping_available?(ip_or_fqdn)
    logger.info("Calling <#{__method__.to_s}> for ping to be ready..")
    sleep 3
  end
  logger.info("#{ip_or_fqdn} is now available to ping..")

  until ssh_available?(ip_or_fqdn, distro_name)
    logger.info("Calling <#{__method__.to_s}> for ssh to be ready..")
    sleep 3
  end
  logger.info("#{ip_or_fqdn} is now available to ssh..")
end