added code to check paths exist on startup

pa_job_manager.py

@@ -1103,8 +1103,39 @@ def RemoveDups(job):
     AddLogForJob(job, "adding <a href='/job/{}'>job id={} {}</a> to confirm there are no more duplicates".format( next_job.id, next_job.id, next_job.name ) )
     return
 
+def ValidateSettingsPaths():
+    settings = session.query(Settings).first()
+    rbp_exists=0
+    paths = settings.recycle_bin_path.split("#")
+    for path in paths:
+        if os.path.exists(path):
+            rbp_exists=1
+            break
+    if not rbp_exists:
+        print("ERROR: The bin path in settings does not exist - Please fix now");
+    sp_exists=0
+    paths = settings.storage_path.split("#")
+    for path in paths:
+        if os.path.exists(path):
+            sp_exists=1
+            break
+    if not sp_exists:
+        print("ERROR: None of the storge paths in the settings does not exist - Please fix now");
+    ip_exists=0
+    for path in paths:
+        if os.path.exists(path):
+            ip_exists=1
+            break
+    if not ip_exists:
+        print("ERROR: None of the import paths in the settings exist - Please fix now");
+    paths = settings.import_path.split("#")
+    return
+
+
 if __name__ == "__main__":
     print("INFO: PA job manager starting - listening on {}:{}".format( PA_JOB_MANAGER_HOST, PA_JOB_MANAGER_PORT) )
+
+    ValidateSettingsPaths()
     
 #    now=datetime.now(pytz.utc)
 #    job=Job(start_time=now, last_update=now, name="scannow", state="New", wait_for=None, pa_job_state="New", current_file_num=0, num_files=0 )