Use watchdog module instead of polling for new log files.

Notify user at startup if client restart required.

EDMarketConnector.py

@@ -155,12 +155,6 @@ class AppWindow:
         if platform != 'linux2':	# update_idletasks() doesn't allow for the menubar on Linux
             self.w.maxsize(-1, h)	# Maximum height = initial height
 
-        # First run
-        if not config.get('username') or not config.get('password'):
-            prefs.PreferencesDialog(self.w, self.login)
-        else:
-            self.login()
-
         # Load updater after UI creation (for WinSparkle)
         import update
         self.updater = update.Updater(self.w)
@@ -176,6 +170,12 @@ class AppWindow:
             monitor.enable_logging()
             monitor.start(self.w)
 
+        # First run
+        if not config.get('username') or not config.get('password'):
+            prefs.PreferencesDialog(self.w, self.login)
+        else:
+            self.login()
+
     # call after credentials have changed
     def login(self):
         self.status['text'] = _('Logging in...')
@@ -201,6 +201,9 @@ class AppWindow:
         except Exception as e:
             if __debug__: print_exc()
             self.status['text'] = unicode(e)
+
+        if not self.status['text'] and monitor.restart_required():
+            self.status['text'] = _('Re-start Elite: Dangerous for automatic log entries')	# Status bar message on launch
         self.cooldown()
 
     # callback after verification code

L10n/en.template

@@ -139,6 +139,9 @@
 /* Privacy setting. [prefs.py] */
 "Pseudo-anonymized ID" = "Pseudo-anonymized ID";
 
+/* Status bar message on launch. [EDMarketConnector.py] */
+"Re-start Elite: Dangerous for automatic log entries" = "Re-start Elite: Dangerous for automatic log entries";
+
 /* Output settings prompt. [prefs.py] */
 "Re-start Elite: Dangerous to use this feature" = "Re-start Elite: Dangerous to use this feature";
 

L10n/fr.strings

@@ -201,3 +201,6 @@
 
 /* [EDMarketConnector.py] */
 "Error: Can't get market data!" = "Erreur: Impossible d'obtenir les données du marché!";
+
+/* Status bar message on launch. [EDMarketConnector.py] */
+"Re-start Elite: Dangerous for automatic log entries" = "Re-démarrer Elite: Dangereux pour les entrées de journal automatique";

L10n/it.strings

@@ -197,7 +197,10 @@
 "Automatically make a log entry on entering a system" = "Inserire automaticamente una log entry entrando in un sistema";
 
 /* Output settings prompt. [prefs.py] */
-"Re-start Elite: Dangerous to use this feature" = "Riavviare Elite:Dangerous per usare questa funzione";
+"Re-start Elite: Dangerous to use this feature" = "Riavviare Elite: Dangerous per usare questa funzione";
 
 /* [EDMarketConnector.py] */
 "Error: Can't get market data!" = "Errore: Non riesco a ottenere il market data!";
+
+/* Status bar message on launch. [EDMarketConnector.py] */
+"Re-start Elite: Dangerous for automatic log entries" = "Riavviare Elite: Dangerous per una log entry automatica";

L10n/pl.strings

@@ -192,3 +192,6 @@
 
 /* [EDMarketConnector.py] */
 "Sending data to EDSM..." = "Wysłanie danych do EDSM...";
+
+/* Output settings prompt. [prefs.py] */
+"Re-start Elite: Dangerous to use this feature" = "";

monitor.py

@@ -1,12 +1,16 @@
+import atexit
 import re
 import threading
 from os import listdir, pardir, rename, unlink
-from os.path import exists, isdir, isfile, join
+from os.path import basename, exists, isdir, isfile, join
 from platform import machine
 from sys import platform
 from time import strptime, localtime, mktime, sleep, time
 from datetime import datetime
 
+from watchdog.observers import Observer
+from watchdog.events import FileSystemEventHandler
+
 if __debug__:
     from traceback import print_exc
 
@@ -60,15 +64,29 @@ elif platform=='win32':
         return True
 
 
-class EDLogs:
+class EDLogs(FileSystemEventHandler):
 
     def __init__(self):
+        FileSystemEventHandler.__init__(self)	# futureproofing - not need for current version of watchdog
         self.root = None
         self.logdir = self._logdir()
+        self.logfile = None
         self.logging_enabled = self._logging_enabled
         self._restart_required = False
-        self.observer = None
-        self.last_event = None
+        self.thread = None
+        self.last_event = None	# for communicating the Jump event
+
+        if self.logdir:
+            # Set up a watchog observer. This is low overhead so is left running irrespective of whether monitoring is desired.
+            observer = Observer()
+            observer.daemon = True
+            observer.schedule(self, self.logdir)
+            observer.start()
+            atexit.register(observer.stop)
+
+            # Latest pre-existing logfile - e.g. if E:D is already running. Assumes logs sort alphabetically.
+            logfiles = sorted([x for x in listdir(self.logdir) if x.startswith('netLog.')])
+            self.logfile = logfiles and join(self.logdir, logfiles[-1]) or None
 
     def enable_logging(self):
         if self.logging_enabled():
@@ -137,17 +155,22 @@ class EDLogs:
             return False
         if self.running():
             return True
-        self.observer = threading.Thread(target = self.worker, name = 'netLog worker')
-        self.observer.daemon = True
-        self.observer.start()
+        self.thread = threading.Thread(target = self.worker, name = 'netLog worker')
+        self.thread.daemon = True
+        self.thread.start()
         return True
 
     def stop(self):
-        self.observer = None	# Orphan the worker thread
+        self.thread = None	# Orphan the worker thread
         self.last_event = None
 
     def running(self):
-        return self.observer and self.observer.is_alive()
+        return self.thread and self.thread.is_alive()
+
+    def on_created(self, event):
+        # watchdog callback, e.g. client (re)started.
+        if not event.is_directory and basename(event.src_path).startswith('netLog.'):
+            self.logfile = event.src_path
 
     def worker(self):
         # e.g. "{18:11:44} System:22(Gamma Doradus) Body:3 Pos:(3.69928e+07,1.13173e+09,-1.75892e+08) \r\n".
@@ -155,27 +178,21 @@ class EDLogs:
         regexp = re.compile(r'\{(.+)\} System:\d+\((.+)\) Body:')
 
         # Seek to the end of the latest log file
-        logfiles = sorted([x for x in listdir(self.logdir) if x.startswith('netLog.')])
-        logfile = logfiles and logfiles[-1] or None
+        logfile = self.logfile
         if logfile:
-            loghandle = open(join(self.logdir, logfile), 'rt')
+            loghandle = open(logfile, 'rt')
             loghandle.seek(0, 2)	# seek to EOF
         else:
             loghandle = None
 
         while True:
-            # Check whether we're still supposed to be running
-            if threading.current_thread() != self.observer:
-                return	# Terminate
-
-            # Check whether new log file started, e.g. client restarted. Assumes logs sort alphabetically.
-            logfiles = sorted([x for x in listdir(self.logdir) if x.startswith('netLog.')])
-            newlogfile = logfiles and logfiles[-1] or None
+            # Check whether new log file started, e.g. client (re)started.
+            newlogfile = self.logfile
             if logfile != newlogfile:
                 logfile = newlogfile
                 if loghandle:
                     loghandle.close()
-                loghandle = open(join(self.logdir, logfile), 'rt')
+                loghandle = open(logfile, 'rt')
 
             if logfile:
                 system = visited = None
@@ -201,6 +218,10 @@ class EDLogs:
 
             sleep(10)	# New system gets posted to log file before hyperspace ends, so don't need to poll too often
 
+            # Check whether we're still supposed to be running
+            if threading.current_thread() != self.thread:
+                return	# Terminate
+
 
     if platform=='darwin':