| | import queue |
| | import threading |
| | from collections.abc import Callable |
| |
|
| | from sensai.util import logging |
| |
|
| | from serena.constants import SERENA_LOG_FORMAT |
| |
|
| |
|
| | class MemoryLogHandler(logging.Handler): |
| | def __init__(self, level: int = logging.NOTSET) -> None: |
| | super().__init__(level=level) |
| | self.setFormatter(logging.Formatter(SERENA_LOG_FORMAT)) |
| | self._log_buffer = LogBuffer() |
| | self._log_queue: queue.Queue[str] = queue.Queue() |
| | self._stop_event = threading.Event() |
| | self._emit_callbacks: list[Callable[[str], None]] = [] |
| |
|
| | |
| | self.worker_thread = threading.Thread(target=self._process_queue, daemon=True) |
| | self.worker_thread.start() |
| |
|
| | def add_emit_callback(self, callback: Callable[[str], None]) -> None: |
| | """ |
| | Adds a callback that will be called with each log message. |
| | The callback should accept a single string argument (the log message). |
| | """ |
| | self._emit_callbacks.append(callback) |
| |
|
| | def emit(self, record: logging.LogRecord) -> None: |
| | msg = self.format(record) |
| | self._log_queue.put_nowait(msg) |
| |
|
| | def _process_queue(self) -> None: |
| | while not self._stop_event.is_set(): |
| | try: |
| | msg = self._log_queue.get(timeout=1) |
| | self._log_buffer.append(msg) |
| | for callback in self._emit_callbacks: |
| | try: |
| | callback(msg) |
| | except: |
| | pass |
| | self._log_queue.task_done() |
| | except queue.Empty: |
| | continue |
| |
|
| | def get_log_messages(self) -> list[str]: |
| | return self._log_buffer.get_log_messages() |
| |
|
| |
|
| | class LogBuffer: |
| | """ |
| | A thread-safe buffer for storing log messages. |
| | """ |
| |
|
| | def __init__(self) -> None: |
| | self._log_messages: list[str] = [] |
| | self._lock = threading.Lock() |
| |
|
| | def append(self, msg: str) -> None: |
| | with self._lock: |
| | self._log_messages.append(msg) |
| |
|
| | def get_log_messages(self) -> list[str]: |
| | with self._lock: |
| | return self._log_messages.copy() |
| |
|
