Class: VCAP::Services::Base::NodeBin

Inherits:
Object
  • Object
show all
Defined in:
lib/base/node_bin.rb

Defined Under Namespace

Modules: Boolean

Instance Method Summary collapse

Instance Method Details

#parse_property(hash, key, type, options = {}) ⇒ Object 



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# File 'lib/base/node_bin.rb', line 139

def parse_property(hash, key, type, options = {})
  obj = hash[key]
  if obj.nil?
    raise "Missing required option: #{key}" unless options[:optional]
    options[:default]
  elsif type == Range
    raise "Invalid Range object: #{obj}" unless obj.kind_of?(Hash)
    first, last = obj["first"], obj["last"]
    raise "Invalid Range object: #{obj}" unless first.kind_of?(Integer) and last.kind_of?(Integer)
    Range.new(first, last)
  else
    raise "Invalid #{type} object: #{obj}" unless obj.kind_of?(type)
    obj
  end
end

#shutdown(node) ⇒ Object 



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# File 'lib/base/node_bin.rb', line 132

def shutdown(node)
  @logger.info("Begin to shutdown node")
  node.shutdown
  @logger.info("End to shutdown node")
  EM.stop
end

#start ⇒ Object 



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# File 'lib/base/node_bin.rb', line 31

def start
  config_file = default_config_file

  OptionParser.new do |opts|
    opts.banner = "Usage: #{$0.split(/\//)[-1]} [options]"
    opts.on("-c", "--config [ARG]", "Configuration File") do |opt|
      config_file = opt
    end
    opts.on("-h", "--help", "Help") do
      puts opts
      exit
    end
  end.parse!

  begin
    config = YAML.load_file(config_file)
  rescue => e
    puts "Could not read configuration file:  #{e}"
    exit
  end

  options = {
    :index => parse_property(config, "index", Integer, :optional => true),
    :plan => parse_property(config, "plan", String, :optional => true, :default => "free"),
    :capacity => parse_property(config, "capacity", Integer, :optional => true, :default => 200),
    :ip_route => parse_property(config, "ip_route", String, :optional => true),
    :node_id => parse_property(config, "node_id", String),
    :z_interval => parse_property(config, "z_interval", Integer, :optional => true),
    :mbus => parse_property(config, "mbus", String),
    :local_db => parse_property(config, "local_db", String),
    :migration_nfs => parse_property(config, "migration_nfs", String, :optional => true),
    :max_nats_payload => parse_property(config, "max_nats_payload", Integer, :optional => true),
    :fqdn_hosts => parse_property(config, "fqdn_hosts", Boolean, :optional => true, :default => false),
    :op_time_limit => parse_property(config, "op_time_limit", Integer, :optional => true, :default => 6),
    :supported_versions => parse_property(config, "supported_versions", Array),
    :default_version => parse_property(config, "default_version", String),
    :max_clients => parse_property(config, "max_clients", Integer, :optional => true),
    :database_lock_file => parse_property(config, "database_lock_file", String, :optional => true, :default => "/var/vcap/sys/run/LOCK"),
    :disabled_file => parse_property(config, "disabled_file", String, :optional => true, :default => "/var/vcap/store/DISABLED"),
    # Wardenized service configuration
    :base_dir => parse_property(config, "base_dir", String, :optional => true),
    :service_log_dir => parse_property(config, "service_log_dir", String, :optional => true),
    :service_common_dir => parse_property(config, "service_common_dir", String, :optional => true, :default => "/var/vcap/store/common"),
    :service_bin_dir => parse_property(config, "service_bin_dir", Hash, :optional => true),
    :image_dir => parse_property(config, "image_dir", String, :optional => true),
    :port_range => parse_property(config, "port_range", Range, :optional => true),
    :filesystem_quota => parse_property(config, "filesystem_quota", Boolean, :optional => true, :default => false),
    :service_start_timeout => parse_property(config, "service_start_timeout", Integer, :optional => true, :default => 3),
    :service_status_timeout => parse_property(config, "service_status_timeout", Integer, :optional => true, :default => 3),
    :max_memory => parse_property(config, "max_memory", Numeric, :optional => true),
    :memory_overhead => parse_property(config, "memory_overhead", Numeric, :optional => true, :default => 0.0),
    :max_disk => parse_property(config, "max_disk", Numeric, :optional => true, :default => 128.0),
    :disk_overhead => parse_property(config, "disk_overhead", Numeric, :optional => true, :default => 0.0),
    :m_interval => parse_property(config, "m_interval", Integer, :optional => true, :default => 10),
    :m_actions => parse_property(config, "m_actions", Array, :optional => true, :default => []),
    :m_failed_times => parse_property(config, "m_failed_times", Integer, :optional => true, :default => 3),
    :warden_socket_path => parse_property(config, "warden_socket_path", String, :optional => true),
  }
  # Workaround for services that support running the service both inside and outside warden
  use_warden = parse_property(config, "use_warden", Boolean, :optional => true, :default => false)
  if use_warden
    warden_config = parse_property(config, "warden", Hash, :optional => true)
    options[:service_log_dir] = parse_property(warden_config, "service_log_dir", String)
    options[:service_common_dir] = parse_property(warden_config, "service_common_dir", String, :optional => true, :default => "/var/vcap/store/common")
    options[:service_bin_dir] = parse_property(warden_config, "service_bin_dir", Hash, :optional => true)
    options[:port_range] = parse_property(warden_config, "port_range", Range)
    options[:image_dir] = parse_property(warden_config, "image_dir", String)
    options[:filesystem_quota] = parse_property(warden_config, "filesystem_quota", Boolean, :optional => true, :default => false)
    options[:service_start_timeout] = parse_property(warden_config, "service_start_timeout", Integer, :optional => true, :default => 3)
    options[:service_status_timeout] = parse_property(warden_config, "service_status_timeout", Integer, :optional => true, :default => 3)
  end

  logging_config = Steno::Config.from_hash(config["logging"])
  Steno.init(logging_config)
  # Use the node id for logger identity name.
  options[:logger] = Steno.logger(options[:node_id])
  @logger = options[:logger]

  options = additional_config(options, config)

  EM.error_handler do |ex|
    @logger.fatal("#{ex} #{ex.backtrace.join("|")}")
    exit
  end

  pid_file = parse_property(config, "pid", String)
  begin
    FileUtils.mkdir_p(File.dirname(pid_file))
  rescue => e
    @logger.fatal "Can't create pid directory, exiting: #{e}"
    exit
  end
  File.open(pid_file, 'w') { |f| f.puts "#{Process.pid}" }

  EM.run do
    node = node_class.new(options)
    trap("INT") {shutdown(node)}
    trap("TERM") {shutdown(node)}
  end
end