detect file rollover in LogTrigger

cpu_governor_auto_adjust/schedule.py

@@ -62,8 +62,10 @@ class TriggerScheduler(AppClass):
         """Start a new trigger."""
         if _trigger.config.type == "async":
             self.loop.create_task(self.async_trigger(_trigger))
-        else:
+        elif _trigger.config.type == "sync":
             self.loop.create_task(self.sync_trigger(_trigger))
+        else:
+            raise ValueError(f"unknown trigger type: {_trigger.config.type}")
         self.running_triggers.append(_trigger)
 
     async def stop_triggers(self) -> None:

cpu_governor_auto_adjust/triggers/log.py

@@ -1,8 +1,9 @@
 from cpu_governor_auto_adjust.trigger import Trigger
 from cpu_governor_auto_adjust.config import Config
-import asyncio
 from datetime import datetime, timedelta
 from functools import cached_property
+import asyncio
+import os
 
 
 class LogTrigger(Trigger):
@@ -50,16 +51,29 @@ class LogTrigger(Trigger):
                 return
         
     async def read_log(self) -> None:
-        with open(self.config.custom_config['logFile'], 'r') as _file:
-            _file.seek(0, 2)  # Move to the end of the file
-            while True:
-                line = _file.readline()
-                if line:
-                    self._process_line(line)
-                else:
-                    await asyncio.sleep(0.1)
-                    if (datetime.now() - self.timestamp_last_active_change) > timedelta(minutes=self.timeout_in_minutes):
-                        self.set_inactive()
+        while True:
+            try:
+                current_inode = os.stat(self.file).st_ino  # Get initial inode
+
+                with open(self.file, 'r') as _file:
+                    _file.seek(0, 2)  # Move to the end of the file
+                    while True:
+                        line = _file.readline()
+                        if line:
+                            self._process_line(line)
+                        else:
+                            await asyncio.sleep(0.1)
+                            # Check if the trigger has not been triggered for the timeout period
+                            if (datetime.now() - self.timestamp_last_active_change) > timedelta(minutes=self.timeout_in_minutes):
+                                self.set_inactive()
+                                
+                        # Detect if file has been rotated
+                        if os.stat(self.file).st_ino != current_inode:
+                            self.log.debug("File %s rolled over. Reopening...", self.file)
+                            break  # Exit inner loop to reopen file
+            except FileNotFoundError:
+                self.log.debug("file not found: %s", self.file)
+                await asyncio.sleep(1)
                     
     async def async_run(self) -> None:
         await self.read_log()

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "cpu_governor_auto_adjust"
-version = "0.1.44"
+version = "0.2.2"
 description = "This application has been developed to automatically change cpu governor based on certain triggers."
 authors = [
     { name = "Martin Reurekas", email = "martin@semrks.nl" }