feat(span-streaming): Add spans to telemetry pipeline, add span name and attributes (3)#5399
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sentrivana merged 13 commits intomasterfrom Feb 2, 2026
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Semver Impact of This PR🟡 Minor (new features) 📋 Changelog PreviewThis is how your changes will appear in the changelog. New Features ✨Span Streaming
Bug Fixes 🐛
Internal Changes 🔧
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Codecov Results 📊✅ 13 passed | Total: 13 | Pass Rate: 100% | Execution Time: 11.79s All tests are passing successfully. ❌ Patch coverage is 21.57%. Project has 13716 uncovered lines. Files with missing lines (180)
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sentrivana
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Jan 30, 2026
| self, telemetry: "Union[Log, Metric]" | ||
| self, telemetry: "Union[Log, Metric, StreamedSpan]" | ||
| ) -> None: | ||
| # TODO: turn Logs, Metrics into actual classes |
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Want to do this eventually, but it's a breaking change so it has to wait.
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sentrivana
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Jan 30, 2026
| span_id = trace_context.get("span_id") | ||
| if telemetry.get("span_id") is None and span_id: | ||
| telemetry["span_id"] = span_id | ||
| if not isinstance(telemetry, StreamedSpan): |
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The stuff for metrics and logs in this if should be moved elsewhere, but out of scope of this PR.
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alexander-alderman-webb
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Jan 30, 2026
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| trace_id: "Optional[str]" = None, | ||
| ): | ||
| self.name: str = name | ||
| self._attributes: "Attributes" = attributes or {} |
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Initial attributes in StreamedSpan not formatted
Medium Severity
StreamedSpan.__init__ assigns attributes directly without calling format_attribute on each value, unlike the existing patterns in logger.py and metrics.py. This creates inconsistent behavior between using __init__(attributes=...) versus set_attribute()/set_attributes(), and violates the design principle stated in format_attribute's docstring: "We do this as soon as a user-provided attribute is set, to prevent spans, logs, metrics and similar from having live references to various objects." Unformatted attributes could retain live object references that mutate before serialization.
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This is actually correct, will fix
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| def _capture_span(self, span: "StreamedSpan", scope: "Scope") -> None: | ||
| pass | ||
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Missing span_batcher in uWSGI thread support check
Low Severity
span_batcher spawns a background flusher thread via the inherited _ensure_thread method, but the condition checking whether to call check_uwsgi_thread_support() only includes self.log_batcher, not self.span_batcher. When running under uWSGI with threading disabled and only span streaming enabled (no logs, profiling, or monitor), users won't receive the warning about thread support issues, and spans will be silently dropped when thread creation fails.
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Will fix in follow up PR
This was referenced Feb 2, 2026
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StreamedSpansince they're used in the pipelineChipping away at #5317 to transform it into reviewable and mergeable PRs.