MPT-24785 Let stream() consumers opt out of deletion stubs - #402
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🪛 LanguageTooldocs/usage.md[style] ~393-~393: Consider using “who” when you are referring to a person instead of an object. (THAT_WHO) 📝 WalkthroughWalkthroughThe streaming APIs now support ChangesStreaming deletion filtering
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: ⚪ Minimal · up to The change lets stream consumers omit deletion stubs while preserving default behavior and progress/count validation; no actionable merge-blocking risk remains after normal checks and review. 🚥 Pre-merge checks | ✅ 3✅ Passed checks (3 passed)
Full details: Documentation Up To DateExplanation The public streaming behavior changed, and the PR updates both matching documents. Comment |
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Inline comments:
In `@mpt_api_client/http/mixins/streaming_mixin.py`:
- Around line 516-518: The streaming documentation incorrectly describes
completeness ordering. Update mpt_api_client/http/mixins/streaming_mixin.py
lines 516-518 and 692-694 to state that completeness accounting uses raw
records, filtering may occur afterward, and final validation runs only when the
response body is fully consumed; note that consumers may receive models before a
truncated tail raises MPTStreamingIncompleteError. Update docs/usage.md lines
410-411 with the same raw-record accounting and end-of-stream validation
description.
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🧠 Learnings (1)
📚 Learning: 2026-02-02T13:05:41.144Z
Learnt from: albertsola
Repo: softwareone-platform/mpt-api-python-client PR: 201
File: tests/unit/resources/accounts/mixins/test_activatable_mixin.py:132-139
Timestamp: 2026-02-02T13:05:41.144Z
Learning: In the mpt-api-python-client repository, tests are configured to use pytest asyncio mode auto, which auto-detects async test functions and runs them without requiring pytest.mark.asyncio. Reviewers should rely on this behavior for all Python test files under tests/, and avoid adding unnecessary asyncio markers in async tests. Ensure test files in tests/ adhere to this convention unless a specific test requires an explicit marker.
Applied to files:
tests/unit/http/mixins/test_streaming_mixin.py
🪛 LanguageTool
docs/architecture.md
[style] ~158-~158: Consider using “who” when you are referring to a person instead of an object.
Context: ...not be ingested as a record. A consumer that ingests no deletions can opt out with t...
(THAT_WHO)
docs/usage.md
[style] ~393-~393: Consider using “who” when you are referring to a person instead of an object.
Context: ...pting Out Of Deletion Stubs A consumer that does not ingest deletions — read-only a...
(THAT_WHO)
Add a keyword-only skip_deleted flag to StreamingMixin.stream() and AsyncStreamingMixin.stream() that withholds DeletionStub objects at yield time, for consumers that do not ingest deletions and would otherwise write the isinstance branch only to drop the stubs. The flag is typed with overloads, so skip_deleted=True narrows the yield type to models only while the default call keeps the union. Filtering runs after the completeness bookkeeping and the progress tick: the MPT-Item-Count verification still sees every raw record, and a progress report still reaches the declared total, which counts stubs. The number of yielded objects therefore intentionally falls short of MPT-Item-Count when the snapshot contains stubs, which the usage guide now calls out. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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🤖 AI-generated PR — Please review carefully.
Implements MPT-24785: consumers of the platform streaming read mode that do not ingest deletions can now opt out of deletion stubs instead of writing the
isinstancebranch themselves — the follow-up agreed in the PR #393 design discussion.What was done
skip_deleted: bool = Falseparameter toStreamingMixin.stream()andAsyncStreamingMixin.stream().skip_deleted=TruewithholdsDeletionStubobjects at yield time; the default keeps the contract-faithful union shape, one object per snapshot member.@overload, sostream(skip_deleted=True)narrows toIterator[Model]/AsyncIterator[Model]and an opted-out consumer carries no union in downstream signatures. The default call keepsIterator[Model | DeletionStub].MPT-Item-Countcompleteness verification still counts raw records, and a truncated stream raisesMPTStreamingIncompleteErrorregardless of the flag;progressreceiver still getsitem_processedfor withheld stubs, so a report still reaches the declared total, which includes stubs._stream_resultsinto a thin filter over the extracted_deserialized_resultsgenerator, keeping cognitive complexity within the WPS limit without suppressions.skip_deleted=Truethe yielded count no longer matchesMPT-Item-Countwhen stubs are present — indocs/usage.md(new "Opting Out Of Deletion Stubs" section), with a brief mention indocs/architecture.md.Testing
set_total_items, and count verification with the flag set — sync and async.make check-allgreen: ruff format/check, flake8 (WPS), strict mypy, uv lock, 2558 unit tests passed;streaming_mixin.pyat 100% line and branch coverage.typing.assert_typeunder the repository mypy configuration.🤖 Generated with Claude Code
skip_deletedparameter to synchronous and asynchronous streaming APIs.DeletionStubobjects whenskip_deleted=True.