Class: RDKit::Server

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

Constant Summary collapse

HZ = 
10
CYCLES_TIL_MEMORY_RESAMPLE = 
1000

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(host, port) ⇒ Server

Returns a new instance of Server.



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# File 'lib/rdkit/server.rb', line 13

def initialize(host, port)
  @host, @port = host, port

  @cycles = 0
  @peak_memory = 0
  @peak_connected_clients = 0

  @clients, @command_parsers = Hash.new, Hash.new

  @logger = Logger.new

  Introspection.register(self)

  @server_up_since = Time.now
end

Instance Attribute Details

#core ⇒ Object (readonly)

Returns the value of attribute core.



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# File 'lib/rdkit/server.rb', line 10

def core
  @core
end

#host ⇒ Object (readonly)

Returns the value of attribute host.



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# File 'lib/rdkit/server.rb', line 11

def host
  @host
end

#port ⇒ Object (readonly)

Returns the value of attribute port.



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# File 'lib/rdkit/server.rb', line 11

def port
  @port
end

#runner ⇒ Object (readonly)

Returns the value of attribute runner.



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# File 'lib/rdkit/server.rb', line 9

def runner
  @runner
end

#server_up_since ⇒ Object (readonly)

Returns the value of attribute server_up_since.



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# File 'lib/rdkit/server.rb', line 8

def server_up_since
  @server_up_since
end

Instance Method Details

#introspection ⇒ Object 



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# File 'lib/rdkit/server.rb', line 56

def introspection
  {
    server: {
      rdkit_version: RDKit::VERSION,
      multiplexing_api: 'select',
      process_id: Process.pid,
      tcp_port: @port,
      uptime_in_seconds: (Time.now - @server_up_since).to_i,
      uptime_in_days: ((Time.now - @server_up_since) / (24 * 60 * 60)).to_i,
      hz: HZ,
    },
    clients: {
      connected_clients: @clients.size,
      connected_clients_peak: @peak_connected_clients
    },
    memory: {
      used_memory_rss: used_memory_rss_in_mb,
      used_memory_peak: used_memory_peak_in_mb
    },
  }
end

#sanity_check! ⇒ Object 



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# File 'lib/rdkit/server.rb', line 29

def sanity_check!
  unless @host && @port
    raise SDKRequirementNotMetError, '@host and @port are required for server to run'
  end

  if @core.nil?
    raise SDKRequirementNotMetError, '@core is required to represent your business logics'
  end

  if @runner.nil?
    raise SDKRequirementNotMetError, '@runner is required to act as an RESP frontend'
  end
end

#start ⇒ Object 



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# File 'lib/rdkit/server.rb', line 43

def start
  sanity_check!

  @server_socket = TCPServer.new(@host, @port)

  run_acceptor
end

#stop ⇒ Object 



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# File 'lib/rdkit/server.rb', line 51

def stop
  @logger.warn "signal caught, shutting down..."
  exit
end