(self)
| 208 | self._pool.reset() |
| 209 | |
| 210 | def _run(self) -> None: |
| 211 | try: |
| 212 | prev_sd = self._server_description |
| 213 | try: |
| 214 | self._server_description = self._check_server() |
| 215 | except _OperationCancelled as exc: |
| 216 | _sanitize(exc) |
| 217 | # Already closed the connection, wait for the next check. |
| 218 | self._server_description = ServerDescription( |
| 219 | self._server_description.address, error=exc |
| 220 | ) |
| 221 | if prev_sd.is_server_type_known: |
| 222 | # Immediately retry since we've already waited 500ms to |
| 223 | # discover that we've been cancelled. |
| 224 | self._executor.skip_sleep() |
| 225 | return |
| 226 | |
| 227 | # Update the Topology and clear the server pool on error. |
| 228 | self._topology.on_change( |
| 229 | self._server_description, |
| 230 | reset_pool=self._server_description.error, |
| 231 | interrupt_connections=isinstance(self._server_description.error, NetworkTimeout), |
| 232 | ) |
| 233 | |
| 234 | if self._stream and ( |
| 235 | self._server_description.is_server_type_known |
| 236 | and self._server_description.topology_version |
| 237 | ): |
| 238 | self._start_rtt_monitor() |
| 239 | # Immediately check for the next streaming response. |
| 240 | self._executor.skip_sleep() |
| 241 | |
| 242 | if self._server_description.error and prev_sd.is_server_type_known: |
| 243 | # Immediately retry on network errors. |
| 244 | self._executor.skip_sleep() |
| 245 | except ReferenceError: |
| 246 | # Topology was garbage-collected. |
| 247 | self.close() |
| 248 | finally: |
| 249 | if self._executor._stopped: |
| 250 | self._rtt_monitor.close() |
| 251 | |
| 252 | def _check_server(self) -> ServerDescription: |
| 253 | """Call hello or read the next streaming response. |
no test coverage detected