Class: Falcon::Command::Serve

Inherits:
Samovar::Command
  • Object
show all
Defined in:
lib/falcon/command/serve.rb

Instance Method Summary collapse

Instance Method Details

#call ⇒ Object 



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# File 'lib/falcon/command/serve.rb', line 151

def call
  container = run(parent.verbose?)
  
  container.wait
end

#client ⇒ Object 



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# File 'lib/falcon/command/serve.rb', line 99

def client
  Async::HTTP::Client.new(client_endpoint)
end

#client_endpoint ⇒ Object 



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# File 'lib/falcon/command/serve.rb', line 95

def client_endpoint
  Async::HTTP::Endpoint.parse(@options[:bind], **endpoint_options)
end

#container_class ⇒ Object 



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# File 'lib/falcon/command/serve.rb', line 57

def container_class
  case @options[:container]
  when :threaded
    return Async::Container::Threaded
  when :forked
    return Async::Container::Forked
  when :hybrid
    return Async::Container::Hybrid
  end
end

#container_options ⇒ Object 



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# File 'lib/falcon/command/serve.rb', line 87

def container_options
  slice_options(:count, :forks, :threads)
end

#endpoint_options ⇒ Object 



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# File 'lib/falcon/command/serve.rb', line 91

def endpoint_options
  slice_options(:hostname, :port, :reuse_port, :timeout)
end

#load_app(verbose) ⇒ Object 



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# File 'lib/falcon/command/serve.rb', line 68

def load_app(verbose)
  rack_app, options = Rack::Builder.parse_file(@options[:config])
  
  return Server.middleware(rack_app, verbose: verbose), options
end

#run(verbose = false) ⇒ Object 



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# File 'lib/falcon/command/serve.rb', line 103

def run(verbose = false)
  app, _ = load_app(verbose)
  
  endpoint = Endpoint.parse(@options[:bind], **endpoint_options)
  
  bound_endpoint = Async::Reactor.run do
    Async::IO::SharedEndpoint.bound(endpoint)
  end.wait
  
  Async.logger.info(endpoint) do |buffer|
    buffer.puts "Falcon taking flight! Using #{container_class} #{container_options}"
    buffer.puts "- To terminate: Ctrl-C or kill #{Process.pid}"
  end
  
  debug_trap = Async::IO::Trap.new(:USR1)
  debug_trap.ignore!
  
  container = container_class.new
  
  container.attach do
    bound_endpoint.close
  end
  
  container.run(name: "Falcon Server", restart: true, **container_options) do |task, instance|
    task.async do
      if debug_trap.install!
        Async.logger.info(instance) do
          "- Per-process status: kill -USR1 #{Process.pid}"
        end
      end
      
      debug_trap.trap do
        Async.logger.info(self) do |buffer|
          task.reactor.print_hierarchy(buffer)
        end
      end
    end
    
    server = Falcon::Server.new(app, bound_endpoint, endpoint.protocol, endpoint.scheme)
    
    server.run
    
    task.children.each(&:wait)
  end
  
  return container
end

#slice_options(*keys) ⇒ Object 



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# File 'lib/falcon/command/serve.rb', line 74

def slice_options(*keys)
  # TODO: Ruby 2.5 introduced Hash#slice
  options = {}
  
  keys.each do |key|
    if @options.key?(key)
      options[key] = @options[key]
    end
  end
  
  return options
end