Class: Norikra::Server

Inherits:
Object
  • Object
show all
Defined in:
lib/norikra/server.rb

Constant Summary collapse

MICRO_PREDEFINED = 
{
  :engine => { inbound:    { threads: 0, capacity: 0 }, outbound:   { threads: 0, capacity: 0 },
               route_exec: { threads: 0, capacity: 0 }, timer_exec: { threads: 0, capacity: 0 }, },
  :rpc => { threads: 2 },
  :web => { threads: 2 },
}
SMALL_PREDEFINED = 
{
  :engine => { inbound:    { threads: 1, capacity: 0 }, outbound:   { threads: 1, capacity: 0 },
               route_exec: { threads: 1, capacity: 0 }, timer_exec: { threads: 1, capacity: 0 }, },
  :rpc => { threads: 2 },
  :web => { threads: 2 },
}
MIDDLE_PREDEFINED = 
{
  :engine => { inbound:    { threads: 4, capacity: 0 }, outbound:   { threads: 2, capacity: 0 },
               route_exec: { threads: 2, capacity: 0 }, timer_exec: { threads: 2, capacity: 0 }, },
  :rpc => { threads: 4 },
  :web => { threads: 2 },
}
LARGE_PREDEFINED = 
{
  :engine => { inbound:    { threads: 6, capacity: 0 }, outbound:   { threads: 6, capacity: 0 },
               route_exec: { threads: 4, capacity: 0 }, timer_exec: { threads: 4, capacity: 0 }, },
  :rpc => { threads: 8 },
  :web => { threads: 2 },
}

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(server_options, conf = {}) ⇒ Server

Returns a new instance of Server.



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# File 'lib/norikra/server.rb', line 72

def initialize(server_options, conf={})
  if conf[:daemonize]
    outfile_path = conf[:daemonize][:outfile] || File.join(conf[:log][:dir], 'norikra.out')
    Dir.chdir("/")
    STDIN.reopen("/dev/null")
    outfile = File.open(outfile_path, 'w')
    STDOUT.reopen(outfile)
    STDERR.reopen(outfile)
    puts "working on #{$PID}"
  end

  @stats_path = conf[:stats][:path]
  @stats_secondary_path = conf[:stats][:secondary_path]
  @stats_suppress_dump = conf[:stats][:suppress]
  @stats_dump_interval = conf[:stats][:interval]
  @stats = if @stats_path && test(?r, @stats_path)
             Norikra::Stats.load(@stats_path)
           else
             nil
           end

  @host = server_options[:host] || Norikra::RPC::HTTP::DEFAULT_LISTEN_HOST
  @port = server_options[:port] || Norikra::RPC::HTTP::DEFAULT_LISTEN_PORT
  @ui_port = server_options[:ui_port] || Norikra::WebUI::HTTP::DEFAULT_LISTEN_PORT

  @thread_conf = self.class.threading_configuration(conf[:thread])
  @log_conf = self.class.log_configuration(conf[:log])
  @log4j_properties_path = conf[:log4j_properties_path]

  if @log4j_properties_path
    Norikra::Log.init_with_log4j_properties_path(@log4j_properties_path)
  else
    Norikra::Log.init(@log_conf[:level], @log_conf[:dir], {filesize: @log_conf[:filesize], backups: @log_conf[:backups], bufferlines: @log_conf[:bufferlines]})
  end

  info "thread configurations", @thread_conf
  info "logging configurations", @log_conf

  unless @stats_path
    warn "status file path (--stats) NOT specified"
    warn "TARGETS AND QUERIES WILL NOT BE SAVED ON SHUTDOWN !"
  end

  @typedef_manager = Norikra::TypedefManager.new
  @output_pool = Norikra::OutputPool.new

  @engine = Norikra::Engine.new(@output_pool, @typedef_manager, {thread: @thread_conf[:engine]})

  @rpcserver = Norikra::RPC::HTTP.new(
    :engine => @engine,
    :host => @host, :port => @port,
    :threads => @thread_conf[:rpc][:threads]
  )
  @webserver = Norikra::WebUI::HTTP.new(
    :engine => @engine,
    :host => @host, :port => @ui_port,
    :threads => @thread_conf[:web][:threads]
  )
end

Instance Attribute Details

#running ⇒ Object

Returns the value of attribute running.



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# File 'lib/norikra/server.rb', line 19

def running
  @running
end

Class Method Details

.log_configuration(conf) ⇒ Object 



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# File 'lib/norikra/server.rb', line 64

def self.log_configuration(conf)
  logconf = { level: nil, dir: nil, filesize: nil, backups: nil, bufferlines: nil }
  [:level, :dir, :filesize, :backups, :bufferlines].each do |sym|
    logconf[sym] = conf[sym] if conf[sym]
  end
  logconf
end

.threading_configuration(conf) ⇒ Object 



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# File 'lib/norikra/server.rb', line 46

def self.threading_configuration(conf)
  threads = case conf[:predefined]
            when :micro then MICRO_PREDEFINED
            when :small then SMALL_PREDEFINED
            when :middle then MIDDLE_PREDEFINED
            when :large then LARGE_PREDEFINED
            else MICRO_PREDEFINED
            end
  [:inbound, :outbound, :route_exec, :timer_exec].each do |type|
    [:threads, :capacity].each do |item|
      threads[:engine][type][item] = conf[:engine][type][item] if conf[:engine][type][item]
    end
  end
  threads[:rpc][:threads] = conf[:rpc][:threads] if conf[:rpc][:threads]
  threads[:web][:threads] = conf[:web][:threads] if conf[:web][:threads]
  threads
end

Instance Method Details

#dump_stats ⇒ Object 



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# File 'lib/norikra/server.rb', line 216

def dump_stats
  Norikra::Stats.generate(@engine).dump(@stats_path, @stats_secondary_path)
  info "Current status saved", :path => @stats_path
end

#load_plugins ⇒ Object 



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# File 'lib/norikra/server.rb', line 200

def load_plugins
  info "Loading UDF plugins"
  Norikra::UDF.listup.each do |mojule|
    if mojule.is_a?(Class)
      name = @engine.load(mojule)
      info "UDF loaded", :name => name
    elsif mojule.is_a?(Module) && mojule.respond_to?(:plugins)
      mojule.init if mojule.respond_to?(:init)
      mojule.plugins.each do |klass|
        name = @engine.load(klass)
        info "UDF loaded", :name => name
      end
    end
  end
end

#run ⇒ Object 



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# File 'lib/norikra/server.rb', line 132

def run
  @engine.start

  load_plugins

  if @stats
    info "loading from stats file"
    if @stats.targets && @stats.targets.size > 0
      @stats.targets.each do |target|
        @engine.open(target[:name], target[:fields], target[:auto_field])
      end
    end
    if @stats.queries && @stats.queries.size > 0
      @stats.queries.each do |query|
        @engine.register(Norikra::Query.new(:name => query[:name], :group => query[:group], :expression => query[:expression]))
      end
    end
  end

  @rpcserver.start
  @webserver.start

  @running = true
  info "Norikra server started."

  shutdown_proc = ->{ @running = false }
  # JVM uses SIGQUIT / SIGUSR1 for thread/heap state dumping
  [:INT, :TERM].each do |s|
    Signal.trap(s, shutdown_proc)
  end

  @dump_stats = false
  @dump_next_time = if @stats_dump_interval
                      Time.now + @stats_dump_interval
                    else
                      nil
                    end
  Signal.trap(:USR2, ->{ @dump_stats = true })

  #TODO: SIGHUP?(dynamic plugin loading?)

  while @running
    sleep 0.3

    if @stats_path && !@stats_suppress_dump
      if @dump_stats || (@dump_next_time && Time.now > @dump_next_time)
        dump_stats
        @dump_stats = false
        @dump_next_time = Time.now + @stats_dump_interval if @dump_next_time
      end
    end
  end
end

#shutdown ⇒ Object 



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# File 'lib/norikra/server.rb', line 186

def shutdown
  info "Norikra server shutting down."
  @webserver.stop
  @rpcserver.stop
  @engine.stop
  info "Norikra server stopped."

  if @stats_path && !@stats_suppress_dump
    dump_stats
  end

  info "Norikra server shutdown complete."
end