Enable the email handler on pagure.io

Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>

roles/pagure/frontend/templates/pagure.cfg

@@ -223,6 +223,7 @@ OLD_VIEW_COMMIT_ENABLED = True
 
 PAGURE_CI_SERVICES=['jenkins']
 
+from pagure.mail_logging import ContextInjector, MSG_FORMAT
 LOGGING = {
     'version': 1,
     'disable_existing_loggers': False,
@@ -230,6 +231,14 @@ LOGGING = {
         'standard': {
             'format': '%(asctime)s [%(levelname)s] %(name)s: %(message)s'
         },
+        'email_format': {
+            'format': MSG_FORMAT
+        }
+    },
+    'filters': {
+        'myfilter': {
+            '()': ContextInjector,
+        }
     },
     'handlers': {
         'console': {
@@ -238,12 +247,22 @@ LOGGING = {
             'class': 'logging.StreamHandler',
             'stream': 'ext://sys.stdout',
         },
+        'email': {
+            'level': 'ERROR',
+            'formatter': 'email_format',
+            'class': 'logging.handlers.SMTPHandler',
+            'mailhost': 'localhost',
+            'fromaddr': 'pagure@localhost',
+            'toaddrs': 'root@localhost',
+            'subject': 'ERROR on pagure',
+            'filters': ['myfilter'],
+        },
     },
     # The root logger configuration; this is a catch-all configuration
     # that applies to all log messages not handled by a different logger
     'root': {
         'level': 'INFO',
-        'handlers': ['console'],
+        'handlers': ['console', 'email'],
     },
     'loggers': {
         'pagure': {
@@ -251,11 +270,6 @@ LOGGING = {
             'level': 'DEBUG',
             'propagate': True
         },
-        'pagure.lib.encoding_utils': {
-            'handlers': ['console'],
-            'level': 'WARN',
-            'propagate': False
-        },
         'flask': {
             'handlers': ['console'],
             'level': 'INFO',
@@ -271,10 +285,14 @@ LOGGING = {
             'level': 'WARN',
             'propagate': True
         },
+        'pagure.lib.encoding_utils': {
+            'handlers': ['console'],
+            'level': 'WARN',
+            'propagate': False
+        },
     }
 }
 
-
 CROSS_PROJECT_ACLS = [
     'create_project',
     'fork_project',