Class: TurboTest::Server

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

Instance Method Summary collapse

Constructor Details

#initialize(configuration, endpoint = nil) ⇒ Server

Returns a new instance of Server.



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# File 'lib/turbo_test/server.rb', line 53

def initialize(configuration, endpoint = nil)
	@configuration = configuration
	@endpoint = endpoint || Async::IO::Endpoint.unix("turbo_test-#{Process.pid}.ipc")
	@wrapper = Wrapper.new
	
	@container = Async::Container.new
end

Instance Method Details

#host(queue) ⇒ Object 



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# File 'lib/turbo_test/server.rb', line 61

def host(queue)
	input, output = IO.pipe
	
	@container.spawn(name: "#{self.class} Host") do |instance|
		connected = 0
		progress = Console.logger.progress("Queue", queue.size)
		failures = []
		
		statistics = {
			succeeded: 0,
			failed: 0,
		}
		
		Async do |task|
			bound_endpoint = Sync do
				Async::IO::SharedEndpoint.bound(@endpoint)
			end
			
			instance.ready!
			
			bound_endpoint.accept do |peer|
				# Console.logger.info(self) {"Incoming connection from #{peer}..."}
				
				packer = @wrapper.packer(peer)
				unpacker = @wrapper.unpacker(peer)
				
				packer.write([:connected, connected])
				connected += 1
				
				unpacker.each do |message|
					command, *arguments = message
					
					case command
					when :ready
						Console.logger.debug("Child Ready") {arguments}
						
						if job = queue.pop
							packer.write([:job, job])
							packer.flush
						else
							Console.logger.debug("Child Closed")
							peer.close_write
							connected -= 1
							
							if connected.zero?
								print_summary(failures)
								task.stop
							end
						end
					when :finished
						Console.logger.debug("Job Finished") {arguments}
					when :failed
						Console.logger.debug("Job Failed") {arguments}
						failures << arguments
						statistics[:failed] += 1
					when :count
						Console.logger.debug("Job Count") {arguments}
						statistics[:succeeded] += arguments.first
					when :result
						Console.logger.debug("Job Result") {arguments}
						progress.increment
					when :error
						Console.logger.error("Job Error") {arguments}
					else
						Console.logger.warn(self) {"Unhandled command: #{command}#{arguments.inspect}"}
					end
				end
			end
			
			bound_endpoint.close
		end
	ensure
		Console.logger.info("Writing results")
		@wrapper.packer(output).write(statistics).flush
	end
	
	output.close
	
	return @wrapper.unpacker(input)
end

#print_summary(failures, command = $0) ⇒ Object 



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# File 'lib/turbo_test/server.rb', line 142

def print_summary(failures, command = $0)
	return unless failures.any?
	
	failures.sort_by!{|(failure)| failure[:location]}
	
	$stderr.puts nil, "Failures:", nil
	
	failures.each do |(failure)|
		$stderr.puts failure[:report]
		$stderr.puts
	end
	
	$stderr.puts nil, "Summary:", nil
	
	failures.each do |(failure)|
		$stderr.puts "#{command} #{failure[:location]} \# #{failure[:description]}"
	end
	
	$stderr.puts
end

#run(queue) ⇒ Object 



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# File 'lib/turbo_test/server.rb', line 211

def run(queue)
	# Start the host:
	results = self.host(queue)
	
	# Wait until the host is ready:
	@container.wait_until_ready
	
	# Start the workers:
	self.workers
	
	# Wait for the container to finish:
	@container.wait
	
	# Read the results from the host:
	return results.read
ensure
	if path = @endpoint.path and File.exist?(path)
		File.unlink(path)
	end
end

#workers ⇒ Object 



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# File 'lib/turbo_test/server.rb', line 163

def workers
	@container.run(name: "#{self.class} Worker") do |instance|
		Async do |task|
			sleep(rand)
			@endpoint.connect do |peer|
				threads = Async::IO::Threads.new
				
				packer = @wrapper.packer(peer)
				unpacker = @wrapper.unpacker(peer)
				
				packer.write([:ready])
				packer.flush
				
				instance.ready!
				
				unpacker.each do |message|
					command, tail = message
					
					case command
					when :connected
						@configuration&.worker&.call(*tail)
					when :job
						klass, *arguments = *tail
						
						begin
							# We run this in a separate thread to keep it isolated from the worker loop:
							result = threads.async do
								klass.new(*arguments).call(packer: packer)
							end.wait
							
							packer.write([:result, result])
						rescue Exception => exception
							packer.write([:error, exception.class, exception.backtrace])
						end
						
						packer.write([:ready])
						packer.flush
					else
						Console.logger.warn(self) {"Unhandled command: #{command}#{arguments.inspect}"}
					end
				end
			end
		rescue Errno::ECONNREFUSED
			# Host is finished already.
		end
	end
end