Class: AnyCable::Server

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

Overview

Wrapper over gRPC server.

Basic example:

# create new server listening on the loopback interface with 50051 port
server = AnyCable::Server.new(host: "127.0.0.1:50051")

# run gRPC server in bakground
server.start

# stop server
server.stop

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(host:, logger: AnyCable.logger, **options) ⇒ Server

Returns a new instance of Server.



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# File 'lib/anycable/server.rb', line 68

def initialize(host:, logger: AnyCable.logger, **options)
  @logger = logger
  @host = host
  @grpc_server = build_server(options)
end

Instance Attribute Details

#grpc_server ⇒ Object (readonly)

Returns the value of attribute grpc_server.



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# File 'lib/anycable/server.rb', line 66

def grpc_server
  @grpc_server
end

#host ⇒ Object (readonly)

Returns the value of attribute host.



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# File 'lib/anycable/server.rb', line 66

def host
  @host
end

Class Method Details

.start(**options) ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/MethodLength



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# File 'lib/anycable/server.rb', line 26

def start(**options)
  warn "    DEPRECATION WARNING: Using AnyCable::Server.start is deprecated!\n    Please, use anycable CLI instead.\n\n    See https://docs.anycable.io/#upgrade_to_0_6_0\n  DEPRECATION\n\n  AnyCable.server_callbacks.each(&:call)\n\n  server = new(\n    host: AnyCable.config.rpc_host,\n    **AnyCable.config.to_grpc_params,\n    interceptors: AnyCable.middleware.to_a,\n    **options\n  )\n\n  AnyCable.middleware.freeze\n\n  if AnyCable.config.http_health_port_provided?\n    health_server = AnyCable::HealthServer.new(\n      server,\n      **AnyCable.config.to_http_health_params\n    )\n    health_server.start\n  end\n\n  at_exit do\n    server.stop\n    health_server&.stop\n  end\n\n  AnyCable.logger.info \"Broadcasting Redis channel: \#{AnyCable.config.redis_channel}\"\n\n  server.start\n  server.wait_till_terminated\nend\n"

Instance Method Details

#running? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/anycable/server.rb', line 107

def running?
  grpc_server.running_state == :running
end

#start ⇒ Object

Start gRPC server in background and wait untill it ready to accept connections



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# File 'lib/anycable/server.rb', line 76

def start
  return if running?

  raise "Cannot re-start stopped server" if stopped?

  check_default_host

  logger.info "RPC server is starting..."

  @start_thread = Thread.new { grpc_server.run }

  grpc_server.wait_till_running

  logger.info "RPC server is listening on #{host}"
end

#stop ⇒ Object

Stop gRPC server if it’s running



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# File 'lib/anycable/server.rb', line 99

def stop
  return unless running?

  grpc_server.stop

  logger.info "RPC server stopped"
end

#stopped? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/anycable/server.rb', line 111

def stopped?
  grpc_server.running_state == :stopped
end

#wait_till_terminated ⇒ Object 



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# File 'lib/anycable/server.rb', line 92

def wait_till_terminated
  raise "Server is not running" unless running?

  start_thread.join
end