Handle exception when calculate last modification time.

utils/__init__.py

@@ -5,9 +5,11 @@ import re
 import stat
 import urllib2
 import uuid
+import logging
 import json
 
 from django.contrib.sites.models import RequestSite
+from django.db import IntegrityError
 from django.shortcuts import render_to_response
 from django.template import RequestContext
 from django.utils.hashcompat import sha_constructor, md5_constructor
@@ -34,6 +36,9 @@ except ImportError:
     
 import settings
 
+# Get an instance of a logger
+logger = logging.getLogger(__name__)
+
 EMPTY_SHA1 = '0000000000000000000000000000000000000000'
 MAX_INT = 2147483647 
 
@@ -655,7 +660,12 @@ def calc_dir_files_last_modified(repo_id, parent_dir, parent_dir_hash, dir_id):
                                     parent_dir_hash=parent_dir_hash,
                                     dir_id=dir_id,
                                     last_modified_info=json.dumps(last_modified_info))
+
+    try:
         info.save()
+    except IntegrityError, e:
+        # If this record is already saved, skip this step.
+        logger.warn(e)
         
     return last_modified_info