add record_exception

Add a wrapper to New Relic's record_exception,
which can be used to monitor caught exceptions.

Co-authored-by: Feanil Patel <[email protected]>

CHANGELOG.rst

@@ -15,9 +15,14 @@ Change Log
 Unreleased
 ~~~~~~~~~~
 
-[3.12.1] - 2020-11-18
+[3.13.0] - 2020-11-18
 ~~~~~~~~~~~~~~~~~~~~~
 
+Added
+_____
+
+* Added record_exception to monitor caught exceptions.
+
 Updated
 _______
 

edx_django_utils/__init__.py

@@ -2,7 +2,7 @@
 EdX utilities for Django Application development..
 """
 
-__version__ = "3.12.1"
+__version__ = "3.13.0"
 
 default_app_config = (
     "edx_django_utils.apps.EdxDjangoUtilsConfig"

edx_django_utils/monitoring/README.rst

@@ -3,6 +3,8 @@ Monitoring Utils
 
 This is our primary abstraction from 3rd party monitoring libraries such as newrelic.agent. It includes middleware and utility methods for adding custom attributes and for better monitoring memory consumption.
 
+See ``__init__.py`` for a list of everything included in the public API.
+
 If, for some reason, you need low level access to the newrelic agent, please extend this library to implement the feature that you want. Applications should never include ``import newrelic.agent`` directly.
 
 Using Custom Attributes

edx_django_utils/monitoring/__init__.py

@@ -16,6 +16,12 @@
     ignore_transaction,
     set_monitoring_transaction_name
 )
-from .internal.utils import accumulate, increment, set_custom_attribute, set_custom_attributes_for_course_key
+from .internal.utils import (
+    accumulate,
+    increment,
+    record_exception,
+    set_custom_attribute,
+    set_custom_attributes_for_course_key
+)
 # "set_custom_metric*" methods are deprecated
 from .utils import set_custom_metric, set_custom_metrics_for_course_key

edx_django_utils/monitoring/internal/utils.py

@@ -21,7 +21,7 @@
 
 try:
     import newrelic.agent
-except ImportError:
+except ImportError:  # pragma: no cover
     newrelic = None  # pylint: disable=invalid-name
 
 
@@ -80,3 +80,19 @@ def set_custom_attribute(key, value):
     if newrelic:  # pragma: no cover
         # note: parameter is new relic's older name for attributes
         newrelic.agent.add_custom_parameter(key, value)
+
+
+def record_exception():
+    """
+    Records a caught exception to the monitoring system.
+
+    Note: By default, only unhandled exceptions are monitored. This function
+    can be called to record exceptions as monitored errors, even if you handle
+    the exception gracefully from a user perspective.
+
+    For more details, see:
+    https://docs.newrelic.com/docs/agents/python-agent/python-agent-api/recordexception-python-agent-api
+
+    """
+    if newrelic:  # pragma: no cover
+        newrelic.agent.record_exception()

edx_django_utils/monitoring/tests/test_monitoring.py

@@ -6,7 +6,13 @@
 from mock import call, patch
 
 from edx_django_utils.cache import RequestCache
-from edx_django_utils.monitoring import CachedCustomMonitoringMiddleware, accumulate, get_current_transaction, increment
+from edx_django_utils.monitoring import (
+    CachedCustomMonitoringMiddleware,
+    accumulate,
+    get_current_transaction,
+    increment,
+    record_exception
+)
 
 from ..middleware import CachedCustomMonitoringMiddleware as DeprecatedCachedCustomMonitoringMiddleware
 from ..middleware import MonitoringCustomMetricsMiddleware as DeprecatedMonitoringCustomMetricsMiddleware
@@ -137,3 +143,8 @@ def test_deprecated_set_custom_attribute(self, mock_set_custom_attribute):
     def test_deprecated_set_custom_attributes_for_course_key(self, mock_set_custom_attributes_for_course_key):
         deprecated_set_custom_attributes_for_course_key('key')
         mock_set_custom_attributes_for_course_key.assert_called_with('key')
+
+    @patch('newrelic.agent.record_exception')
+    def test_record_exception(self, mock_record_exception):
+        record_exception()
+        mock_record_exception.assert_called_once()