#!/usr/bin/env python3
-
-import socketserver
-import threading
-import queue
-
-# Avoid "Address already in use" errors.
-socketserver.TCPServer.allow_reuse_address = True
-
-
-class Server(socketserver.ThreadingTCPServer):
- """Bind together threaded IO handling server and message queue."""
-
- def __init__(self, queue, *args, **kwargs):
- super().__init__(*args, **kwargs)
- self.queue_out = queue
- self.daemon_threads = True # Else, server's threads have daemon=False.
-
-
-def fib(n):
- """Calculate n-th Fibonacci number. Very inefficiently."""
- if n in (1, 2):
- return 1
+import sys
+import os
+import server_.game
+
+
+if len(sys.argv) != 2:
+ print('wrong number of arguments, expected one (game file)')
+ exit(1)
+game_file_name = sys.argv[1]
+game = server_.game.Game(game_file_name)
+if os.path.exists(game_file_name):
+ if not os.path.isfile(game_file_name):
+ print('game file name does not refer to a valid game file')
else:
- return fib(n-1) + fib(n-2)
-
-
-class IO_Handler(socketserver.BaseRequestHandler):
-
- def handle(self):
- """Move messages between network socket and main thread via queues.
-
- On start, sets up new queue, sends it via self.server.queue_out to
- main thread, and from then on receives messages to send back from the
- main thread via that new queue.
-
- At the same time, loops over socket's recv to get messages from the
- outside via self.server.queue_out into the main thread. Ends connection
- once a 'QUIT' message is received from socket, and then also kills its
- own queue.
-
- All messages to the main thread are tuples, with the first element a
- meta command ('ADD_QUEUE' for queue creation, 'KILL_QUEUE' for queue
- deletion, and 'COMMAND' for everything else), the second element a UUID
- that uniquely identifies the thread (so that the main thread knows whom
- to send replies back to), and optionally a third element for further
- instructions.
- """
- import plom_socket_io
-
- def caught_send(socket, message):
- """Send message by socket, catch broken socket connection error."""
- try:
- plom_socket_io.send(socket, message)
- except plom_socket_io.BrokenSocketConnection:
- pass
-
- def send_queue_messages(socket, queue_in, thread_alive):
- """Send messages via socket from queue_in while thread_alive[0]."""
- while thread_alive[0]:
- try:
- msg = queue_in.get(timeout=1)
- except queue.Empty:
- continue
- caught_send(socket, msg)
-
- import uuid
- print('CONNECTION FROM:', str(self.client_address))
- connection_id = uuid.uuid4()
- queue_in = queue.Queue()
- self.server.queue_out.put(('ADD_QUEUE', connection_id, queue_in))
- thread_alive = [True]
- t = threading.Thread(target=send_queue_messages,
- args=(self.request, queue_in, thread_alive))
- t.start()
- for message in plom_socket_io.recv(self.request):
- if message is None:
- caught_send(self.request, 'BAD MESSAGE')
- elif 'QUIT' == message:
- caught_send(self.request, 'BYE')
- break
- else:
- self.server.queue_out.put(('COMMAND', connection_id, message))
- self.server.queue_out.put(('KILL_QUEUE', connection_id))
- thread_alive[0] = False
- print('CONNECTION CLOSED:', str(self.client_address))
- self.request.close()
-
-
-def io_loop(q):
- """Handle commands coming through queue q, send results back.
-
- Commands from q are expected to be tuples, with the first element either
- 'ADD_QUEUE', 'COMMAND', or 'KILL_QUEUE', the second element a UUID, and
- an optional third element of arbitrary type. The UUID identifies a
- receiver for replies.
-
- An 'ADD_QUEUE' command should contain as third element a queue through
- which to send messages back to the sender of the command. A 'KILL_QUEUE'
- command removes the queue for that receiver from the list of queues through
- which to send replies.
-
- A 'COMMAND' command is specified in greater detail by a string that is the
- tuple's third element. Here, the following commands are understood:
- - A string starting with 'PRIVMSG' returns the space-separated tokens
- following 'PRIVMSG' to the sender via its receiver queue.
- - A string starting with 'ALL' sends the space-separated tokens following
- 'ALL' to all receiver queues.
- - A string starting with 'FIB' followed by space-separated positive
- integers returns to the receiver queue first a 'CALCULATING …' messsage,
- and afterwards for each such integer n the n-th Fibonacci number as a
- space-separated sequence of integers. Fibonacci numbers are calculated
- in parallel if possible.
- """
- from multiprocessing import Pool
- queues_out = {}
- while True:
- x = q.get()
- command_type = x[0]
- connection_id = x[1]
- content = None if len(x) == 2 else x[2]
- if command_type == 'ADD_QUEUE':
- queues_out[connection_id] = content
- elif command_type == 'COMMAND':
- tokens = [token for token in content.split(' ') if len(token) > 0]
- if len(tokens) == 0:
- queues_out[connection_id].put('EMPTY COMMAND')
- continue
- if tokens[0] == 'PRIVMSG':
- reply = ' '.join(tokens[1:])
- queues_out[connection_id].put(reply)
- elif tokens[0] == 'ALL':
- reply = ' '.join(tokens[1:])
- for key in queues_out:
- queues_out[key].put(reply)
- elif tokens[0] == 'FIB':
- fib_fail = 'MALFORMED FIB REQUEST'
- if len(tokens) < 2:
- queues_out[connection_id].put(fib_fail)
- continue
- numbers = []
- fail = False
- for token in tokens[1:]:
- if token != '0' and token.isdigit():
- numbers += [int(token)]
- else:
- queues_out[connection_id].put(fib_fail)
- fail = True
- break
- if fail:
- continue
- queues_out[connection_id].put('CALCULATING …')
- reply = ''
- # this blocks the whole loop, BAD
- with Pool(len(numbers)) as p:
- results = p.map(fib, numbers)
- reply = ' '.join([str(r) for r in results])
- queues_out[connection_id].put(reply)
- else:
- queues_out[connection_id].put('UNKNOWN COMMAND')
- elif command_type == 'KILL_QUEUE':
- del queues_out[connection_id]
-
-
-q = queue.Queue()
-c = threading.Thread(target=io_loop, daemon=True, args=(q,))
-c.start()
-server = Server(q, ('localhost', 5000), IO_Handler)
-try:
- server.serve_forever()
-except KeyboardInterrupt:
- pass
-finally:
- print('Killing server')
- server.server_close()
+ with open(game_file_name, 'r') as f:
+ lines = f.readlines()
+ for i in range(len(lines)):
+ line = lines[i]
+ print("FILE INPUT LINE %5s: %s" % (i, line), end='')
+ game.io.handle_input(line, store=False)
+else:
+ game.io.handle_input('GEN_WORLD Hex Y:16,X:16 bar')
+game.io.run_loop_with_server()
projects / plomrogue2-experiments / blobdiff