7e56d89bcc
In an earlier PR, we moved logic from process_view to process request, so mapping would happen earlier in the middleware lifecycle, and the code_owner metric would be set for requests that never made it to process_view. The temp_view_func_compare custom metric was added temporarily to ensure this earlier refactor did not introduce any unaccounted for differences. It did not, so we are removing this temporary metric. ARCHBOM-1263
50 lines
1.7 KiB
Python
50 lines
1.7 KiB
Python
"""
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Middleware for monitoring the LMS
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"""
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import logging
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from django.urls import Resolver404, resolve
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from edx_django_utils.monitoring import set_custom_metric
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from .utils import get_code_owner_from_module, is_code_owner_mappings_configured
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log = logging.getLogger(__name__)
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class CodeOwnerMetricMiddleware:
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"""
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Django middleware object to set custom metrics for the owner of each view.
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Custom metrics set:
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- code_owner: The owning team mapped to the current view.
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- code_owner_mapping_error: If there are any errors when trying to perform the mapping.
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- view_func_module: The __module__ of the view_func, which can be used to
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find missing mappings.
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"""
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def __init__(self, get_response):
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self.get_response = get_response
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def __call__(self, request):
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self._set_owner_metrics_for_request(request)
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response = self.get_response(request)
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return response
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def _set_owner_metrics_for_request(self, request):
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"""
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Uses the request path to find the view_func and then sets code owner metrics based on the view.
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"""
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if not is_code_owner_mappings_configured():
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return
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try:
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view_func, _, _ = resolve(request.path)
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view_func_module = view_func.__module__
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set_custom_metric('view_func_module', view_func_module)
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code_owner = get_code_owner_from_module(view_func_module)
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if code_owner:
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set_custom_metric('code_owner', code_owner)
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except Resolver404:
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set_custom_metric('code_owner_mapping_error', "Couldn't resolve view for request path {}".format(request.path))
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except Exception as e:
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set_custom_metric('code_owner_mapping_error', e)
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