Class: NodefuCreate

Inherits:
Chef::Knife
  • Object
show all
Includes:
NodefuBase
Defined in:
lib/chef/knife/nodefu_create.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from NodefuBase

#check_args, #failed_nodes, #generate_security_groups, #is_vpc?, #parse_servers, #pretty_print_hash, #successful_nodes

Instance Attribute Details

#servers ⇒ Object (readonly)

Returns the value of attribute servers.



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# File 'lib/chef/knife/nodefu_create.rb', line 18

def servers
  @servers
end

Instance Method Details

#definitions_from_directory(dir) ⇒ Object 



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# File 'lib/chef/knife/nodefu_create.rb', line 60

def definitions_from_directory(dir)
  definitions = Hash.new
  Dir.entries(dir).each do |f|
    if File.extname(f) == ".yml"
      puts "loading #{f}"
      loaded_defs = YAML.load_file(::File.join(dir,f))
      definitions = Chef::Mixin::DeepMerge.merge(definitions,loaded_defs)
    end
  end
  definitions
end

#run ⇒ Object 



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# File 'lib/chef/knife/nodefu_create.rb', line 72

def run
  check_args(1)

  base_name, start_range, end_range = parse_servers(name_args[0])

  env                = Chef::Config[:environment]
  defs_dir           = Chef::Config[:nodefu_definitions] || config[:definitions]
  yml_config         = definitions_from_directory defs_dir
  merged_config      = Chef::Mixin::DeepMerge.merge(yml_config['default'], yml_config['env'][env])
  node_spec_name     = config[:node_spec] || base_name
  abort("I'm sorry I couldn't find any node_spec matches :(") unless (node_spec = merged_config['node_spec'][node_spec_name])

  domain             = merged_config['domain']
  vm_spec_name       = node_spec['vm_spec']
  vm_spec            = merged_config['vm_spec'][vm_spec_name]
  group_ids          = node_spec['group_ids'] ||= []
  aux_groups         = node_spec['aux_groups'] ||= []

  elastic_ip_address = node_spec['elastic_ip_address']
  private_ip_address = node_spec['private_ip_address']

  unless elastic_ip_address.nil? && private_ip_address.nil?
    abort("Range isn't supported when a private_ip_address or an elastic_ip_address is set, please only create one instance") unless start_range == end_range
  end
  abort('private_ip_address option uses VPC mode, which requires a subnet_id in the definitions file for the node_spec]') if private_ip_address && node_spec['subnet_id'].nil?


  unless config[:bypass_key_check]
    abort("It looks like you haven't added the #{vm_spec['ssh_key']} key to your ssh keychain.\n\nRun ssh-add /path/to/#{vm_spec['ssh_key']}.pem\n\n") if `ssh-add -L | grep #{vm_spec['ssh_key']}`.empty?
  end

  # Present the user with some totally rad visuals!!!
  ui.msg("#{ui.color('SHAZAM!',:red)} It looks like you want to launch #{ui.color((end_range - start_range + 1).to_s,:yellow)} of these:")
  ui.msg("#{ui.color('Base Name',:cyan)}: #{base_name}")
  ui.msg("#{ui.color('Node Spec',:cyan)}: #{node_spec_name}")
  ui.msg("#{ui.color('VPC Mode',:cyan)}: #{is_vpc?(node_spec)}")
  pretty_print_hash(node_spec)
  pretty_print_hash(vm_spec)

  unless config[:disable_default_groups] || is_vpc?(node_spec)
    ui.msg("#{ui.color('Auto generated security groups',:cyan)}: #{generate_security_groups("#{base_name}#{start_range}-#{end_range}",env,domain)}")
  end

  config[:yes] ? user_response = 'yes' : user_response = ui.ask_question("Does this seem right to you? [y/n] ").downcase
  abort("See ya!") unless (['yes','y',].include?(user_response))

  threads = []
  sema = Mutex.new
  for i in (start_range..end_range)
    ec2_server_request = Ec2ServerCreate.new
    node_name = "#{base_name}#{i}"
    full_node_name  = "#{node_name}.#{env}.#{domain}"
    security_groups = if config[:disable_default_groups]
                        aux_groups
                      else
                        generate_security_groups(node_name,env,domain) + aux_groups
                      end unless is_vpc?(node_spec)
    security_group_ids = group_ids

    # A handfull of the Ec2ServerCreate command line options use a :proc field so I have to
    # populate those by hand instead of simply passing a value to its config entry
    Chef::Config[:knife][:aws_ssh_key_id]                 = vm_spec['ssh_key']
    Chef::Config[:knife][:image]                          = vm_spec['ami']
    Chef::Config[:knife][:region]                         = vm_spec['region']
    ec2_server_request.config[:image]                     = vm_spec['ami']
    ec2_server_request.config[:region]                    = vm_spec['region']
    ec2_server_request.config[:chef_node_name]            = full_node_name
    ec2_server_request.config[:run_list]                  = node_spec['run_list']
    ec2_server_request.config[:flavor]                    = vm_spec['type']
    ec2_server_request.config[:security_groups]           = security_groups if security_groups
    ec2_server_request.config[:security_group_ids]        = security_group_ids if security_group_ids
    ec2_server_request.config[:associate_eip]             = elastic_ip_address if elastic_ip_address
    ec2_server_request.config[:subnet_id]                 = node_spec['subnet_id'] if node_spec['subnet_id']
    ec2_server_request.config[:private_ip_address]        = private_ip_address if private_ip_address
    ec2_server_request.config[:ssh_user]                  = vm_spec['user']
    ec2_server_request.config[:availability_zone]         = vm_spec['az']
    ec2_server_request.config[:distro]                    = vm_spec['bootstrap']
    ec2_server_request.config[:server_connect_attribute]  = node_spec['server_connect_attribute'] if node_spec['server_connect_attribute']
    ec2_server_request.config[:environment]               = Chef::Config[:environment]
    ec2_server_request.config[:ssh_port]                  = "22"
    ec2_server_request.config[:iam_instance_profile]      = node_spec['iam_instance_profile']
    threads << Thread.new(full_node_name,ec2_server_request) do |full_node_name,request|
      e = nil
      begin
          request.run
      rescue => e
        config[:exit_on_fail] ? raise(e) : puts("#{full_node_name}: #{e.message}")
      end
      sema.synchronize {
        [full_node_name, { 'server' => request.server, 'failure' => e, 'chef_node' => nil} ]
      }
      end
  end
  threads.each(&:join)

  # Build a servers hash with the node names as the key from the object returned by the threads
  @servers = threads.inject({}) {|hash,t| hash[t.value[0]] = t.value[1]; hash}

  query = Chef::Search::Query.new
  query.search('node',"name:#{base_name}*#{env}*") { |n| @servers[n.name]['chef_node'] = n unless @servers[n.name].nil? }

  ui.msg('')

  failed = failed_nodes(@servers)
  unless failed.nil?
    failed.each_pair do |k,v|
      if v['server'].nil?
        ui.msg("#{k}: #{v['failure']}")
      else
        ui.msg("#{k}: #{v['failure']}, #{v['server'].dns_name}, #{v['server'].id}")
      end
    end
  end

  successful = successful_nodes(@servers)
  unless successful.nil?
    ui.msg(ui.color('Successful Nodes:',:green))
    successful.each_pair { |k,v| ui.msg("#{k}: #{v['id']}, #{v['server'].dns_name}, #{v['server'].id}") }
  end
end