629 lines
24 KiB
Python
629 lines
24 KiB
Python
# FlightMonitor/utils/logger.py
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import logging
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import logging.handlers # For RotatingFileHandler
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import tkinter as tk
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from tkinter.scrolledtext import ScrolledText
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from queue import Queue, Empty as QueueEmpty # Renamed for clarity
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from typing import Optional, Dict, Any
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# --- Module-level globals for the new centralized logging queue system ---
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_global_log_queue: Optional[Queue[logging.LogRecord]] = None
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_actual_console_handler: Optional[logging.StreamHandler] = None
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_actual_file_handler: Optional[logging.handlers.RotatingFileHandler] = None
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_actual_tkinter_handler: Optional["TkinterTextHandler"] = None # Forward declaration
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_log_processor_after_id: Optional[str] = None
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_logging_system_active: bool = False
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_tk_root_instance_for_processing: Optional[tk.Tk] = None
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_base_formatter: Optional[logging.Formatter] = None # Store the main formatter
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# Interval for polling the global log queue by the GUI thread processor
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GLOBAL_LOG_QUEUE_POLL_INTERVAL_MS = 50
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class TkinterTextHandler(logging.Handler):
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"""
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A logging handler that directs log messages to a Tkinter Text widget.
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This handler itself is now called by _process_global_log_queue,
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which runs in the GUI thread. Its internal queue is for batching updates
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to the Text widget if needed, or could be simplified later.
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"""
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def __init__(
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self,
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text_widget: tk.Text, # ScrolledText is a tk.Text
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level_colors: Dict[int, str],
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# root_tk_instance and queue_poll_interval_ms for its own internal queue might be redundant
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# if _process_global_log_queue handles batching, but kept for now.
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# For now, this handler will still use its own internal queue and after loop for safety.
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root_tk_instance_for_widget_update: tk.Tk,
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internal_poll_interval_ms: int = 100,
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):
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super().__init__()
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self.text_widget = text_widget
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self.level_colors = level_colors
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self._is_active = True # Internal active state for this specific handler
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self._widget_update_queue = Queue()
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self._root_for_widget_update = root_tk_instance_for_widget_update
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self._internal_poll_interval_ms = internal_poll_interval_ms
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self._internal_after_id: Optional[str] = None
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if not (
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self.text_widget
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and hasattr(self.text_widget, "winfo_exists")
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and self.text_widget.winfo_exists()
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):
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print(
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"ERROR: TkinterTextHandler initialized with an invalid or non-existent text_widget.",
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flush=True,
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)
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self._is_active = False
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return
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if not (
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self._root_for_widget_update
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and hasattr(self._root_for_widget_update, "winfo_exists")
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and self._root_for_widget_update.winfo_exists()
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):
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print(
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"ERROR: TkinterTextHandler initialized with an invalid root for widget update.",
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flush=True,
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)
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self._is_active = False
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return
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if self._is_active:
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self._configure_tags()
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self._process_widget_update_queue() # Start its own update loop
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def _configure_tags(self):
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if not self._is_active or not self.text_widget.winfo_exists():
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return
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for level, color_value in self.level_colors.items():
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level_name = logging.getLevelName(level)
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if color_value:
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try:
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self.text_widget.tag_config(level_name, foreground=color_value)
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except tk.TclError:
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print(
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f"Warning: Could not configure tag for {level_name} in TkinterTextHandler.",
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flush=True,
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)
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def emit(self, record: logging.LogRecord):
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# This emit is called by _process_global_log_queue (already in GUI thread)
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if not self._is_active or not self.text_widget.winfo_exists():
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# This case should ideally not happen if setup is correct
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# print(
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# f"DEBUG: TkinterTextHandler.emit called but inactive or widget gone. Record: {record.getMessage()}",
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# flush=True,
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# )
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return
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try:
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msg = self.format(
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record
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) # Format the record using the formatter set on this handler
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level_name = record.levelname
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# Put in its own queue for batched widget updates
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self._widget_update_queue.put_nowait((level_name, msg))
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except Exception as e:
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print(
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f"Error in TkinterTextHandler.emit (to internal queue): {e}", flush=True
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)
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def _process_widget_update_queue(self):
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if (
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not self._is_active
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or not self.text_widget.winfo_exists()
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or not self._root_for_widget_update.winfo_exists()
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):
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self._is_active = False
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if self._internal_after_id and self._root_for_widget_update.winfo_exists():
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try:
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self._root_for_widget_update.after_cancel(self._internal_after_id)
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except Exception:
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pass
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self._internal_after_id = None
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# print("DEBUG: TkinterTextHandler._process_widget_update_queue stopping (inactive/widget gone).", flush=True)
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return
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had_messages = False
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try:
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while not self._widget_update_queue.empty():
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had_messages = True
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level_name, msg = self._widget_update_queue.get_nowait()
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if self.text_widget.winfo_exists():
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self.text_widget.configure(state=tk.NORMAL)
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self.text_widget.insert(tk.END, msg + "\n", (level_name,))
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self.text_widget.configure(state=tk.DISABLED)
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else: # Widget destroyed during processing
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self._is_active = False
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break
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self._widget_update_queue.task_done()
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if had_messages and self.text_widget.winfo_exists():
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self.text_widget.see(tk.END)
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except tk.TclError as e_tcl:
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print(
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f"TkinterTextHandler TclError during widget update: {e_tcl}. Handler stopping.",
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flush=True,
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)
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self._is_active = False
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except Exception as e_update:
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print(
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f"Unexpected error updating TkinterTextHandler widget: {e_update}. Handler stopping.",
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flush=True,
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)
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self._is_active = False
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if self._is_active and self._root_for_widget_update.winfo_exists():
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self._internal_after_id = self._root_for_widget_update.after(
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self._internal_poll_interval_ms, self._process_widget_update_queue
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)
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else: # Ensure it's cleaned up if we are stopping
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if self._internal_after_id and self._root_for_widget_update.winfo_exists():
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try:
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self._root_for_widget_update.after_cancel(self._internal_after_id)
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except Exception:
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pass
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self._internal_after_id = None
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def close(self):
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# print("INFO: TkinterTextHandler close called.", flush=True) # Reduced verbosity
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self._is_active = False
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if (
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self._internal_after_id
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and hasattr(self, "_root_for_widget_update")
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and self._root_for_widget_update
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and self._root_for_widget_update.winfo_exists()
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):
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try:
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self._root_for_widget_update.after_cancel(self._internal_after_id)
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except Exception:
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pass
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self._internal_after_id = None
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# Drain its internal queue
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while not self._widget_update_queue.empty():
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try:
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self._widget_update_queue.get_nowait()
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self._widget_update_queue.task_done()
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except Exception:
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break
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super().close()
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class QueuePuttingHandler(logging.Handler):
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"""
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A simple handler that puts any received LogRecord into a global queue.
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"""
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def __init__(self, handler_queue: Queue[logging.LogRecord]):
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super().__init__()
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self.handler_queue = handler_queue
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def emit(self, record: logging.LogRecord):
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try:
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self.handler_queue.put_nowait(record)
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except queue.Full: # Standard library 'queue.Full'
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print(
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f"CRITICAL: Global log queue is full! Log record for '{record.name}' might be lost.",
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flush=True,
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)
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except Exception as e:
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print(
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f"CRITICAL: Error putting log record into global queue: {e}", flush=True
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)
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def _process_global_log_queue():
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"""
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GUI Thread: Periodically processes LogRecords from the _global_log_queue
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and dispatches them to the actual configured handlers.
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"""
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global _logging_system_active, _log_processor_after_id
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# print(f"DEBUG: _process_global_log_queue called. Active: {_logging_system_active}", flush=True)
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if not _logging_system_active:
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if (
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_log_processor_after_id
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and _tk_root_instance_for_processing
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and _tk_root_instance_for_processing.winfo_exists()
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):
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try:
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_tk_root_instance_for_processing.after_cancel(_log_processor_after_id)
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except Exception:
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pass
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_log_processor_after_id = None
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return
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if not (
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_tk_root_instance_for_processing
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and _tk_root_instance_for_processing.winfo_exists()
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):
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_logging_system_active = False
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_log_processor_after_id = None
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return
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processed_count = 0
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try:
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while _global_log_queue and not _global_log_queue.empty():
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if not _logging_system_active:
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break
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try:
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record = _global_log_queue.get_nowait()
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processed_count += 1
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if _actual_console_handler:
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try:
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_actual_console_handler.handle(record)
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except Exception as e_con:
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print(f"Error in console_handler.handle: {e_con}", flush=True)
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if _actual_file_handler:
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try:
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_actual_file_handler.handle(record)
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except Exception as e_file:
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print(f"Error in file_handler.handle: {e_file}", flush=True)
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if _actual_tkinter_handler:
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try:
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_actual_tkinter_handler.handle(record)
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except Exception as e_tk:
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print(f"Error in tkinter_handler.handle: {e_tk}", flush=True)
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_global_log_queue.task_done()
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except QueueEmpty:
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break
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except Exception as e_proc_item:
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print(
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f"Error processing a log item from global queue: {e_proc_item}",
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flush=True,
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)
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except Exception as e_outer_loop:
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print(
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f"Critical error in _process_global_log_queue outer loop: {e_outer_loop}",
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flush=True,
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)
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if _logging_system_active and _tk_root_instance_for_processing.winfo_exists():
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_log_processor_after_id = _tk_root_instance_for_processing.after(
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GLOBAL_LOG_QUEUE_POLL_INTERVAL_MS, _process_global_log_queue
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)
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def setup_basic_logging( # MODIFIED: Renamed from setup_logging
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root_tk_instance_for_processor: Optional[
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tk.Tk
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], # MODIFIED: Now mandatory for processor
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logging_config_dict: Optional[Dict[str, Any]] = None,
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):
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global _global_log_queue, _actual_console_handler, _actual_file_handler
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global _logging_system_active, _tk_root_instance_for_processing
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global _log_processor_after_id, _base_formatter, _actual_tkinter_handler # _actual_tkinter_handler should be None here
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# This function should only be called ONCE.
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if _logging_system_active:
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print(
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"WARNING: setup_basic_logging called but logging system is already active. Ignoring call.",
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flush=True,
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)
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return
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print("INFO: Configuring basic centralized queued logging system...", flush=True)
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_actual_tkinter_handler = None # Ensure it's None at basic setup
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if logging_config_dict is None:
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print(
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"Warning: No logging_config_dict. Using basic console-only defaults for queued logging.",
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flush=True,
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)
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# Simplified default, as Tkinter parts are handled by add_tkinter_handler
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logging_config_dict = {
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"default_root_level": logging.INFO,
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"specific_levels": {},
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"format": "%(asctime)s [%(levelname)-8s] %(name)-25s : %(message)s",
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"date_format": "%Y-%m-%d %H:%M:%S",
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"enable_console": True,
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"enable_file": False,
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}
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root_log_level = logging_config_dict.get("default_root_level", logging.INFO)
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specific_levels = logging_config_dict.get("specific_levels", {})
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log_format_str = logging_config_dict.get(
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"format", "%(asctime)s [%(levelname)-8s] %(name)-25s : %(message)s"
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)
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log_date_format_str = logging_config_dict.get("date_format", "%Y-%m-%d %H:%M:%S")
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enable_console = logging_config_dict.get("enable_console", True)
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enable_file = logging_config_dict.get("enable_file", False)
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_base_formatter = logging.Formatter(log_format_str, datefmt=log_date_format_str)
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_global_log_queue = Queue()
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_tk_root_instance_for_processing = root_tk_instance_for_processor
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root_logger = logging.getLogger()
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for handler in root_logger.handlers[
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:
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]: # Clear any pre-existing handlers (e.g. from basicConfig)
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try:
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handler.close()
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root_logger.removeHandler(handler)
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except Exception:
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pass
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root_logger.handlers = []
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root_logger.setLevel(root_log_level)
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print(
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f"INFO: Root logger level set to {logging.getLevelName(root_logger.level)}.",
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flush=True,
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)
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for logger_name, level in specific_levels.items():
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named_logger = logging.getLogger(logger_name)
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named_logger.setLevel(level)
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named_logger.propagate = True
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print(
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f"INFO: Logger '{logger_name}' level set to {logging.getLevelName(named_logger.level)}.",
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flush=True,
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)
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if enable_console:
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try:
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_actual_console_handler = logging.StreamHandler()
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_actual_console_handler.setFormatter(_base_formatter)
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_actual_console_handler.setLevel(logging.DEBUG)
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print("INFO: Actual ConsoleHandler created.", flush=True)
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except Exception as e:
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print(f"ERROR: Failed to create actual ConsoleHandler: {e}", flush=True)
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_actual_console_handler = None
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if enable_file:
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try:
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file_path = logging_config_dict.get("file_path", "flight_monitor_app.log")
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file_max_bytes = logging_config_dict.get("file_max_bytes", 5 * 1024 * 1024)
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file_backup_count = logging_config_dict.get("file_backup_count", 3)
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_actual_file_handler = logging.handlers.RotatingFileHandler(
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file_path,
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maxBytes=file_max_bytes,
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backupCount=file_backup_count,
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encoding="utf-8",
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)
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_actual_file_handler.setFormatter(_base_formatter)
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_actual_file_handler.setLevel(logging.DEBUG)
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print(
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f"INFO: Actual RotatingFileHandler created for '{file_path}'.",
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flush=True,
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)
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except Exception as e:
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print(
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f"ERROR: Failed to create actual FileHandler for '{file_path}': {e}",
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flush=True,
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)
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_actual_file_handler = None
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|
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if _global_log_queue is not None:
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queue_putter = QueuePuttingHandler(handler_queue=_global_log_queue)
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queue_putter.setLevel(logging.DEBUG)
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root_logger.addHandler(queue_putter)
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print(f"INFO: QueuePuttingHandler added to root logger.", flush=True)
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else:
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print(
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"CRITICAL ERROR: Global log queue not initialized in basic setup!",
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flush=True,
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)
|
|
|
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_logging_system_active = True
|
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if (
|
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_tk_root_instance_for_processing
|
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and _tk_root_instance_for_processing.winfo_exists()
|
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):
|
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if _log_processor_after_id: # Should be None here, but defensive
|
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try:
|
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_tk_root_instance_for_processing.after_cancel(_log_processor_after_id)
|
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except Exception:
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pass
|
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_log_processor_after_id = _tk_root_instance_for_processing.after(
|
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GLOBAL_LOG_QUEUE_POLL_INTERVAL_MS, _process_global_log_queue
|
|
)
|
|
print(
|
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f"INFO: Global log queue processor scheduled (ID: {_log_processor_after_id}).",
|
|
flush=True,
|
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)
|
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elif not _tk_root_instance_for_processing:
|
|
print(
|
|
"WARNING: No Tkinter root instance for processor. Logs will queue but not be dispatched by this setup function alone.",
|
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flush=True,
|
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)
|
|
|
|
print("INFO: Basic centralized queued logging system setup complete.", flush=True)
|
|
logging.getLogger("FlightMonitor.LoggerTest").info(
|
|
"Basic logging initialized. This is a test from setup_basic_logging."
|
|
)
|
|
|
|
|
|
def add_tkinter_handler( # NEW FUNCTION
|
|
gui_log_widget: tk.Text,
|
|
root_tk_instance_for_gui_handler: tk.Tk,
|
|
logging_config_dict: Dict[str, Any],
|
|
):
|
|
global _actual_tkinter_handler, _base_formatter
|
|
|
|
if not _logging_system_active:
|
|
print(
|
|
"ERROR: Cannot add Tkinter handler, basic logging system not active.",
|
|
flush=True,
|
|
)
|
|
return
|
|
if not _base_formatter:
|
|
print("ERROR: Cannot add Tkinter handler, base formatter not set.", flush=True)
|
|
return
|
|
|
|
print("INFO: Attempting to add TkinterTextHandler...", flush=True)
|
|
|
|
if _actual_tkinter_handler: # If one already exists, close and prepare to replace
|
|
print(
|
|
"INFO: Existing TkinterTextHandler found, closing it before adding new one.",
|
|
flush=True,
|
|
)
|
|
try:
|
|
_actual_tkinter_handler.close()
|
|
except Exception as e_close_old_tk:
|
|
print(
|
|
f"Warning: Error closing old TkinterTextHandler: {e_close_old_tk}",
|
|
flush=True,
|
|
)
|
|
_actual_tkinter_handler = None
|
|
|
|
is_widget_valid = (
|
|
isinstance(gui_log_widget, (tk.Text, ScrolledText))
|
|
and hasattr(gui_log_widget, "winfo_exists")
|
|
and gui_log_widget.winfo_exists()
|
|
)
|
|
is_root_valid = (
|
|
root_tk_instance_for_gui_handler
|
|
and hasattr(root_tk_instance_for_gui_handler, "winfo_exists")
|
|
and root_tk_instance_for_gui_handler.winfo_exists()
|
|
)
|
|
|
|
if is_widget_valid and is_root_valid:
|
|
try:
|
|
level_colors = logging_config_dict.get("colors", {})
|
|
tkinter_handler_poll_ms = logging_config_dict.get(
|
|
"queue_poll_interval_ms", 100
|
|
)
|
|
|
|
_actual_tkinter_handler = TkinterTextHandler(
|
|
text_widget=gui_log_widget,
|
|
level_colors=level_colors,
|
|
root_tk_instance_for_widget_update=root_tk_instance_for_gui_handler,
|
|
internal_poll_interval_ms=tkinter_handler_poll_ms,
|
|
)
|
|
_actual_tkinter_handler.setFormatter(_base_formatter)
|
|
_actual_tkinter_handler.setLevel(logging.DEBUG)
|
|
print(
|
|
"INFO: TkinterTextHandler added and configured successfully.",
|
|
flush=True,
|
|
)
|
|
logging.getLogger("FlightMonitor.LoggerTest").info(
|
|
"TkinterTextHandler added. This is a test from add_tkinter_handler."
|
|
)
|
|
except Exception as e:
|
|
print(
|
|
f"ERROR: Failed to create and add TkinterTextHandler: {e}", flush=True
|
|
)
|
|
_actual_tkinter_handler = None
|
|
else:
|
|
if not is_widget_valid:
|
|
print(
|
|
"ERROR: GUI log widget invalid or non-existent, cannot add TkinterTextHandler.",
|
|
flush=True,
|
|
)
|
|
if not is_root_valid:
|
|
print(
|
|
"ERROR: Root Tk instance for GUI handler invalid or non-existent.",
|
|
flush=True,
|
|
)
|
|
|
|
|
|
def get_logger(name: str) -> logging.Logger:
|
|
"""
|
|
Retrieves a logger instance by name.
|
|
Module-level loggers should use `get_logger(__name__)`.
|
|
"""
|
|
return logging.getLogger(name)
|
|
|
|
|
|
def shutdown_logging_system():
|
|
"""
|
|
Shuts down the centralized logging system, processing remaining logs
|
|
and closing actual handlers.
|
|
"""
|
|
global _logging_system_active, _log_processor_after_id
|
|
global _actual_console_handler, _actual_file_handler, _actual_tkinter_handler
|
|
global _global_log_queue, _tk_root_instance_for_processing
|
|
|
|
if (
|
|
not _logging_system_active and not _global_log_queue
|
|
): # Extra check if it was never really active
|
|
print(
|
|
"INFO: Logging system shutdown called, but system was not fully active or already shut down.",
|
|
flush=True,
|
|
)
|
|
return
|
|
|
|
print("INFO: Initiating shutdown of centralized logging system...", flush=True)
|
|
_logging_system_active = False
|
|
|
|
if (
|
|
_log_processor_after_id
|
|
and _tk_root_instance_for_processing
|
|
and _tk_root_instance_for_processing.winfo_exists()
|
|
):
|
|
try:
|
|
_tk_root_instance_for_processing.after_cancel(_log_processor_after_id)
|
|
# print("INFO: Cancelled global log queue processor task.", flush=True) # Reduced verbosity
|
|
except Exception as e_cancel:
|
|
print(
|
|
f"Warning: Error cancelling log processor task: {e_cancel}", flush=True
|
|
)
|
|
_log_processor_after_id = None
|
|
|
|
# print("INFO: Processing any remaining logs in the global queue before full shutdown...", flush=True) # Reduced
|
|
if _global_log_queue:
|
|
final_processed_count = 0
|
|
while not _global_log_queue.empty():
|
|
try:
|
|
record = _global_log_queue.get_nowait()
|
|
final_processed_count += 1
|
|
if _actual_console_handler:
|
|
_actual_console_handler.handle(record)
|
|
if _actual_file_handler:
|
|
_actual_file_handler.handle(record)
|
|
if _actual_tkinter_handler:
|
|
_actual_tkinter_handler.handle(record)
|
|
_global_log_queue.task_done()
|
|
except QueueEmpty:
|
|
break
|
|
except Exception as e_final_proc:
|
|
print(f"Error during final log processing: {e_final_proc}", flush=True)
|
|
break
|
|
# if final_processed_count > 0: print(f"INFO: Processed {final_processed_count} remaining log messages.", flush=True)
|
|
# else: print("INFO: No remaining log messages in global queue to process.", flush=True)
|
|
|
|
if _actual_tkinter_handler:
|
|
try:
|
|
# print("INFO: Closing actual TkinterTextHandler.", flush=True) # Reduced
|
|
_actual_tkinter_handler.close()
|
|
except Exception as e:
|
|
print(f"Error closing TkinterTextHandler: {e}", flush=True)
|
|
_actual_tkinter_handler = None
|
|
|
|
if _actual_console_handler:
|
|
try:
|
|
# print("INFO: Closing actual ConsoleHandler.", flush=True) # Reduced
|
|
_actual_console_handler.close()
|
|
except Exception as e:
|
|
print(f"Error closing ConsoleHandler: {e}", flush=True)
|
|
_actual_console_handler = None
|
|
|
|
if _actual_file_handler:
|
|
try:
|
|
# print("INFO: Closing actual FileHandler.", flush=True) # Reduced
|
|
_actual_file_handler.close()
|
|
except Exception as e:
|
|
print(f"Error closing FileHandler: {e}", flush=True)
|
|
_actual_file_handler = None
|
|
|
|
root_logger = logging.getLogger()
|
|
for handler in root_logger.handlers[:]:
|
|
try:
|
|
if isinstance(handler, QueuePuttingHandler):
|
|
handler.close()
|
|
root_logger.removeHandler(handler)
|
|
# print(f"INFO: Removed and closed QueuePuttingHandler: {handler}", flush=True) # Reduced
|
|
except Exception as e_rem_qph:
|
|
print(f"Error removing QueuePuttingHandler: {e_rem_qph}", flush=True)
|
|
|
|
_global_log_queue = None
|
|
_tk_root_instance_for_processing = None
|
|
_base_formatter = None
|
|
print("INFO: Centralized logging system shutdown complete.", flush=True)
|