Tracker that tracks the resources.
| 324 | |
| 325 | |
| 326 | class TrackerServerHandler: |
| 327 | """Tracker that tracks the resources.""" |
| 328 | |
| 329 | def __init__(self, sock, stop_key): |
| 330 | self._scheduler_map = {} |
| 331 | self._sock = sock |
| 332 | self._sock.setblocking(0) |
| 333 | self._ioloop = ioloop.IOLoop.current() |
| 334 | self._stop_key = stop_key |
| 335 | self._connections = set() |
| 336 | |
| 337 | def _event_handler(_, events): |
| 338 | self._on_event(events) |
| 339 | |
| 340 | self._ioloop.add_handler(self._sock.fileno(), _event_handler, self._ioloop.READ) |
| 341 | |
| 342 | def _on_event(self, _): |
| 343 | while True: |
| 344 | try: |
| 345 | conn, addr = self._sock.accept() |
| 346 | TCPEventHandler(self, conn, addr) |
| 347 | except OSError as err: |
| 348 | if err.args[0] in (errno.EAGAIN, errno.EWOULDBLOCK): |
| 349 | break |
| 350 | |
| 351 | def create_scheduler(self, key): |
| 352 | """Create a new scheduler.""" |
| 353 | return PriorityScheduler(key) |
| 354 | |
| 355 | def put(self, key, value): |
| 356 | """Report a new resource to the tracker.""" |
| 357 | if key not in self._scheduler_map: |
| 358 | self._scheduler_map[key] = self.create_scheduler(key) |
| 359 | self._scheduler_map[key].put(value) |
| 360 | |
| 361 | def request(self, key, user, priority, callback): |
| 362 | """Request a new resource.""" |
| 363 | if key not in self._scheduler_map: |
| 364 | self._scheduler_map[key] = self.create_scheduler(key) |
| 365 | self._scheduler_map[key].request(user, priority, callback) |
| 366 | |
| 367 | def close(self, conn): |
| 368 | self._connections.remove(conn) |
| 369 | if "key" in conn._info: |
| 370 | for value in conn.put_values: |
| 371 | _, _, _, key = value |
| 372 | rpc_key, _ = base.split_random_key(key) |
| 373 | self._scheduler_map[rpc_key].remove(value) |
| 374 | |
| 375 | def stop(self): |
| 376 | """Safely stop tracker.""" |
| 377 | for conn in list(self._connections): |
| 378 | conn.close() |
| 379 | self._sock.close() |
| 380 | self._ioloop.stop() |
| 381 | |
| 382 | def summary(self): |
| 383 | """Return a dict summarizing current status.""" |
no outgoing calls
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