Fix DjangoInstrumentor exemplars generation for http.server.(request.)duration #3945
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tammy-baylis-swi
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herin049
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Nov 19, 2025
...nstrumentation-django/src/opentelemetry/instrumentation/django/middleware/otel_middleware.py
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herin049
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Nov 21, 2025
| self.assertTrue(len(metrics_data.resource_metrics) > 0) | ||
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| duration_metric = None | ||
| metric_names = [] |
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What's the purpose of this variable?
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| for resource_metric in metrics_data.resource_metrics: | ||
| for scope_metric in resource_metric.scope_metrics: | ||
| for metric in scope_metric.metrics: | ||
| metric_names.append(metric.name) | ||
| if metric.name in [ | ||
| "http.server.request.duration", | ||
| "http.server.duration", | ||
| ]: | ||
| duration_metric = metric | ||
| break | ||
| if duration_metric: | ||
| break | ||
| if duration_metric: | ||
| break |
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| for resource_metric in metrics_data.resource_metrics: | |
| for scope_metric in resource_metric.scope_metrics: | |
| for metric in scope_metric.metrics: | |
| metric_names.append(metric.name) | |
| if metric.name in [ | |
| "http.server.request.duration", | |
| "http.server.duration", | |
| ]: | |
| duration_metric = metric | |
| break | |
| if duration_metric: | |
| break | |
| if duration_metric: | |
| break | |
| duration_metric = next((metric for metric in self.get_sorted_metrics() if metric.name in ("http.server.request.duration", "http.server.duration")), None) |
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Description
When exemplars are opted into via metrics SDK, this fixes DjangoInstrumentor middleware's generation of exemplars for http.server.request.duration and http.server.duration (new and old semconv respectively) so trace ID and span ID are no longer empty. Similar to Flask fix in #3912 -- test dep updates will conflict
Fixes #3951
Type of change
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How Has This Been Tested?
Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration
Does This PR Require a Core Repo Change?
Checklist:
See contributing.md for styleguide, changelog guidelines, and more.