[fix] Get Notification Deadlock

frappe/__init__.py

@@ -7,8 +7,7 @@ globals attached to frappe module
 from __future__ import unicode_literals
 
 from werkzeug.local import Local, release_local
-import os, importlib, inspect
-import json
+import os, importlib, inspect, logging, json
 
 # public
 from frappe.__version__ import __version__
@@ -639,3 +638,14 @@ def get_print_format(doctype, name, print_format=None, style=None, as_pdf=False)
 			return html
 	else:
 		return html
+
+logging_setup_complete = False
+def get_logger(module=None):
+	from frappe.setup_logging import setup_logging
+	global logging_setup_complete
+
+	if not logging_setup_complete:
+		setup_logging()
+		logging_setup_complete = True
+
+	return logging.getLogger(module or "frappe")

frappe/app.py

@@ -20,15 +20,13 @@ import frappe.utils.response
 import frappe.website.render
 from frappe.utils import get_site_name
 from frappe.middlewares import StaticDataMiddleware
-from frappe.setup_logging import setup_logging
 
 local_manager = LocalManager([frappe.local])
 
 _site = None
 _sites_path = os.environ.get("SITES_PATH", ".")
 
-setup_logging()
-logger = logging.getLogger(__name__)
+logger = frappe.get_logger()
 
 @Request.application
 def application(request):

frappe/core/doctype/notification_count/notification_count.py

@@ -5,8 +5,11 @@
 
 from __future__ import unicode_literals
 import frappe
+import MySQLdb
 from frappe.model.document import Document
 
+logger = frappe.get_logger()
+
 class NotificationCount(Document):
 	pass
 
@@ -34,18 +37,34 @@ def get_notifications():
 				result = frappe.get_list(d, fields=["count(*)"],
 					filters=[[d, key, "=", condition[key]]], as_list=True)[0][0]
 
-				frappe.get_doc({"doctype":"Notification Count", "for_doctype":d,
-					"open_count":result}).insert(ignore_permissions=True)
-
 				open_count_doctype[d] = result
 
+				try:
+					frappe.get_doc({"doctype":"Notification Count", "for_doctype":d,
+						"open_count":result}).insert(ignore_permissions=True)
+
+				except MySQLdb.OperationalError, e:
+					if e.args[0] != 1213:
+						raise
+
+					logger.error("Deadlock")
+
 	for m in config.for_module:
 		if m in notification_count:
 			open_count_module[m] = notification_count[m]
 		else:
 			open_count_module[m] = frappe.get_attr(config.for_module[m])()
-			frappe.get_doc({"doctype":"Notification Count", "for_doctype":m,
-				"open_count":open_count_module[m]}).insert(ignore_permissions=True)
+
+			try:
+				frappe.get_doc({"doctype":"Notification Count", "for_doctype":m,
+					"open_count":open_count_module[m]}).insert(ignore_permissions=True)
+
+			except MySQLdb.OperationalError, e:
+				if e.args[0] != 1213:
+					raise
+
+				logger.error("Deadlock")
+
 
 	return {
 		"open_count_doctype": open_count_doctype,

frappe/setup_logging.py

@@ -35,7 +35,7 @@ def setup_logging():
 				}
 			},
 			"loggers": {
-				"frappe.app": {
+				"frappe": {
 					"level": "INFO",
 					"propagate": False,
 					"filters": ["context_filter"],

frappe/utils/email_lib/email_body.py

@@ -31,7 +31,7 @@ class EMail:
 	Also provides a clean way to add binary `FileData` attachments
 	Also sets all messages as multipart/alternative for cleaner reading in text-only clients
 	"""
-	def __init__(self, sender='', recipients=[], subject='', alternative=0, reply_to=None):
+	def __init__(self, sender='', recipients=(), subject='', alternative=0, reply_to=None):
 		from email.mime.multipart import MIMEMultipart
 		from email import Charset
 		Charset.add_charset('utf-8', Charset.QP, Charset.QP, 'utf-8')