refactor(engine): newest and ordered — the two read policies land everywhere - #2028
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… lossless The schema constant carries two values, DeliveryProfile becomes Newest/Ordered, and every site that quoted the three words moves with it — declarers, the macro grammar, the control-plane rendering, the Python declaration surface, the `streamlib new` scaffold and the wheel test corpus. No aliases, no deprecation: a retired word now fails at wire time listing the two legal values. Overflow stays, unreachable, for #2025 to delete.
Both surviving profiles resolve to DropOldest, so the false arm the doc walked through is unreachable prose.
…d the profile tests drive the declaration constant Review adjudication for #2024. Moving SpeakerSink's port from lossless to ordered is a behaviour change (Overflow::Block -> DropOldest), so the comments three lines below it explaining the code by producer-blocking are claims this change falsified, not vocabulary #2025 inherits. Also: the Ordered variant doc stops claiming a count the subscriber ring does not make; STREAM_DEPTH becomes ORDERED_DEPTH now that the grouping it named is gone; and the two value-set tests iterate DELIVERY_PROFILE_DECLARATION_VALUES instead of a hand-written array, so a profile added to the constant is covered without widening them.
… cannot make Two over-promises this branch introduced, both of the class the retired word was retired for. The Python input() docstring and the README said every drop is counted at the port and readable in graph. Every Python processor is helper-placed, and a helper-placed destination's node carries no metrics at all rather than a zero the parent cannot stand behind (open_iceoryx2_service_op.rs:726). Both now state only what holds: neither profile promises delivery, and no link blocks a producer. LinkOutputDataWriter.write's stub doc attributed an over-ceiling write to the consuming port's drop count. It is a producer-side payload byte-size refusal counted in refused_over_ceiling_count on the egress (output.rs:195); the bag never reaches a subscriber, so no mailbox eviction can ever account for it. Also: node.rs describes both arms of enable_safe_overflow again — false is live, passed by the tap and asserted by node.rs:488 — and the two twins of the audio-probe comment rewritten earlier lose the same no-sample-may-be-dropped claim.
…ule prefix A module prefix enrols whatever that module holds next, which is how a device test joins the deviceless slice without anyone deciding to add it. Nine names, mirrored verbatim in the xtask list.
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| """ | ||
| with pytest.raises(TypeError, match="unexpected keyword argument 'schema'"): | ||
| input(schema="VideoFrame", delivery_profile="latest") # type: ignore[call-arg] | ||
| input(schema="VideoFrame", delivery_profile="newest") # type: ignore[call-arg] |
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Not a defect — this is a deliberate negative assertion, and the line is unchanged by this PR beyond the latest → newest rename.
The call sits inside pytest.raises(TypeError, match="unexpected keyword argument 'schema'"). Refusing schema= is the contract under test: a port carries no type, so schema= is gone rather than tolerated-and-ignored (plan: ARCHITECTURE.md §Processor model, schema-free-ports). The line already carries # type: ignore[call-arg] for exactly this reason, and pyright is clean at 0 errors.
Making the analyzer happy here would mean deleting the test that proves the parameter is absent.
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📝 WalkthroughWalkthroughThe delivery-profile API changes from ChangesDelivery profile migration
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: 🟡 Moderate · up to This PR replaces the public delivery-profile names and removes lossless producer-blocking behavior; ordered delivery can discard older data when its bounded queue overruns. Merge readiness still has concrete gaps: a test collector promises every bag despite possible eviction, the README omits a shared-channel restriction, and mixed-version manifests or runtimes will reject stale values during graph construction. These risks should be fixed or explicitly accepted before merge. 🚥 Pre-merge checks | ✅ 2 | ❌ 3❌ Failed checks (3 warnings)
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Inline comments:
In `@README.md`:
- Around line 271-272: Update the README passage about producer bag ordering to
state that all consumers sharing a source port must use the same profile;
consumers requiring different policies such as newest and ordered must connect
through distinct source ports. Keep the existing explanation of the opposing
consumer requirements.
In `@sdk/streamlib-python-wheel/src/python_test_harness_endpoints.rs`:
- Line 194: Update the test harness contract around TestBagCollector and
DeliveryProfile::Ordered to account for the depth-16 DropOldest mailbox: either
change the contract and assertions to permit evicted bags, or enforce that every
caller produces no more than 16 undrained bags. Preserve lossless assertions
only when the mailbox-depth constraint is guaranteed.
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.github/workflows/test.ymlREADME.mdruntime/streamlib-engine/src/core/compiler/compiler_ops/open_iceoryx2_service_op.rsruntime/streamlib-engine/src/core/graph/nodes/port_info.rsruntime/streamlib-engine/src/core/json_schema.rsruntime/streamlib-engine/src/core/runtime/operations_runtime.rsruntime/streamlib-engine/src/core/test_support.rsruntime/streamlib-engine/src/iceoryx2/delivery_profile.rsruntime/streamlib-engine/src/iceoryx2/node.rsruntime/streamlib-engine/tests/attribute_macro_test.rsruntime/streamlib-engine/tests/fixtures/audio_channel_drain.pyruntime/streamlib-engine/tests/fixtures/captured_audio_waveform_recorder.pyruntime/streamlib-engine/tests/fixtures/known_audio_signal_source.pyruntime/streamlib-media-builtins/src/audio_samples_awaiting_playback_ring.rsruntime/streamlib-media-builtins/src/captured_audio_block_hand_off_ring.rsruntime/streamlib-media-builtins/src/display_window.rsruntime/streamlib-media-builtins/src/microphone_source.rsruntime/streamlib-media-builtins/src/speaker_sink.rssdk/streamlib-macros/src/grammar.rssdk/streamlib-processor-schema/src/descriptors.rssdk/streamlib-processor-schema/src/processor_schema.rssdk/streamlib-processor-schema/src/processor_schema_parser.rssdk/streamlib-python-wheel/python/streamlib/_engine.pyisdk/streamlib-python-wheel/python/streamlib/_processor_declaration.pysdk/streamlib-python-wheel/python/streamlib/cli.pysdk/streamlib-python-wheel/src/python_test_harness_endpoints.rssdk/streamlib-python-wheel/tests/capability_context_probes.pysdk/streamlib-python-wheel/tests/cast_claim_probes.pysdk/streamlib-python-wheel/tests/device_exchange_probes.pysdk/streamlib-python-wheel/tests/first_frame_reporter.pysdk/streamlib-python-wheel/tests/graph_building_processors.pysdk/streamlib-python-wheel/tests/helper_placement_processors.pysdk/streamlib-python-wheel/tests/helper_process_probes.pysdk/streamlib-python-wheel/tests/microphone_source_probes.pysdk/streamlib-python-wheel/tests/native_builtin_probes.pysdk/streamlib-python-wheel/tests/pixel_exchange_probes.pysdk/streamlib-python-wheel/tests/processor_owned_window_probes.pysdk/streamlib-python-wheel/tests/single_processor_under_test.pysdk/streamlib-python-wheel/tests/speaker_sink_probes.pysdk/streamlib-python-wheel/tests/test_cli_launch.pysdk/streamlib-python-wheel/tests/test_graph_building.pysdk/streamlib-python-wheel/tests/test_processor_declaration.pysdk/streamlib-python-wheel/tests/test_single_processor_pipeline.pysdk/streamlib-python-wheel/tests/test_speaker_sink.pysdk/streamlib-python-wheel/tests/texture_ring_producer_probes.pyxtask/src/main.rs
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…he one-policy-per-port rule CodeRabbit review. TestBagCollector's description promised 'every bag' on a depth-16 drop-oldest port — the same over-promise shape this change retired the old vocabulary for. It now says what it bounds. README described two consumers wanting different profiles 'from the same producer', which is the one arrangement channel_delivery_profile refuses: a channel's single publisher shares one ring config, so consumers that want different policies fan out through distinct output ports.
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…odel and archive (#2030) * docs(plan): ship delivery-profile-vocabulary — fold into §Processor model and archive Every ticket of the change is merged (#2023 → PR #2026, #2024 → PR #2028, #2025 → PR #2029), so the delta folds into the plan and the change file archives under #2029's merge date. The fold is not a clean tick. "No loss is silent" shipped for the app-process half only, and the tree says so out loud — `open_iceoryx2_service_op` carries a test named `a_helper_placed_destinations_node_carries_no_metrics_rather_than_a_zero`. So the clause is amended rather than folded in as delivered, and the two paths that still lose a bag uncounted become one OPEN entry beneath it: - a helper-placed destination — every Python processor — evicts and counts in its own child process, and its graph node renders no `metrics` key at all; - a bag the iceoryx2 subscriber ring overwrites under `enable_safe_overflow` never reaches a mailbox and is counted nowhere. The `newest` pass-over is recorded as the deliberate non-drop it is (`PortMailbox::pop_latest`, and the test that locks it). §Processor model & scheduling stays IN-FLIGHT — it now holds three OPEN entries (this one, drop-count reflection, extra execution flavors). The section's `(→ delivery-profile-vocabulary)` pointer goes. §Media I/O needed no fold: the align already moved its audio entries to `ordered`, and the change was consequential there only. Ten `<!-- verify: -->` markers added, all run and passing; the diagram's "every drop is counted at the port and shows in graph" carried the same overclaim on the helper edge and is corrected. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> * docs(plan): a drop count is cumulative for one wiring, not for a link id Two of #2023's reviewers read the change file's "monotonic and cumulative" and found the built behaviour narrower: `DroppedBagCountsByInboundLink::forget_inbound_link` drops a disconnected link's counter, so reconnecting the same id starts from zero. The code says why — a count outliving its link would name something `graph` no longer has — but the plan said nothing, and a reader polling counts across a reconnect would have been wrong about what they were reading. Locked by `a_disconnected_links_count_goes_with_the_link`. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
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Summary
The align retired
losslessandevery_sampleas over-promising and renamedlatestforambiguity. This lands the two honest words —
newest/ordered— at every spelling site.Clean rename, no aliases, no deprecation (pre-1.0): a retired word now fails at wire time
listing the two legal values.
DELIVERY_PROFILE_DECLARATION_VALUESbecomes[&str; 2],DeliveryProfilebecomesNewest/Ordered, andLossless's resolution toOverflow::Blockgoes with it — soproducer-blocking is unreachable from here on. The
Overflowenum itself stays; #2025deletes the machinery and carries the change's
REMOVED:bullets.The census in the ticket body was an under-count and has been corrected in place (35 ×
latest,14 ×
every_sample, 8 ×losslessacrossruntime/+sdk/, not the three files first named).Closes
Closes #2024
Exit criteria
git grep -F '"lossless"' -- runtime sdk, the same for"every_sample", anddelivery_profile = "latest"— all three return zero. The constant carries exactly two entries.latestfails at wire time listing'newest', 'ordered'(
unknown_declared_value_is_rejected_with_the_legal_values, kept with new spellings)./verify-audioPASS on the rig withSpeakerSinkdeclaringordered, wheel rebuilt first.Test plan
Run on this branch, against a wheel rebuilt with
maturin develop:/verify-audiothrough-engine loopback (rig)482917in order, 0.0 ms continuity error, 0 tap drops-m "not requires_gpu")mypy.stubtest streamlib._enginepyright@1.1.411cargo test -p streamlib-python-wheel --libcargo test -p streamlib-media-builtins --libtest_tap_audio_channel/test_known_audio_signalcargo xtask run-local-ci-gatescargo xtask check-all-source-gatescargo test --workspace(tier-1 baseline)cargo fmt --all --checkNot proven here:
cargo check --target aarch64-apple-darwincannot complete on this machine —iceoryx2-pal-posix-0.8.1's build script fails on a missing Apple SDK header (libproc.h) whilegenerating bindings. The crates whose dependency tree excludes it (
streamlib-processor-schema,streamlib-macros) cross-check clean, and this branch changes no dependency, so the failure isenvironmental rather than a branch defect — but the ticket's stated cross-check is unproven
and needs a machine with the SDK.
Notes for owner
Two scope calls, one of which I reversed under review.
I first drew the refactor(engine): newest and ordered — the two read policies land everywhere #2024/chore(engine): the blocking machinery goes — Overflow deletes and the bullets prove it #2025 boundary at the quoted form — leaving backticked prose about
producer-blocking for chore(engine): the blocking machinery goes — Overflow deletes and the bullets prove it #2025. Both reviewers pushed back, correctly: moving
SpeakerSinkfromlosslesstoorderedis a behaviour change (Overflow::Block→DropOldest), so a commentthree lines below it explaining the code by producer-blocking is a claim this change
falsified, and CLAUDE.md makes that non-optional. The working rule became prose this change
falsifies moves; prose describing still-live machinery stays.
tap.rsandoverflow.rsstay —verified the tap builds its blocking channel by hand rather than deriving it from a profile, so
enable_safe_overflow: falseis genuinely still reachable until chore(engine): the blocking machinery goes — Overflow deletes and the bullets prove it #2025.The full hand-off, including two anchors chore(engine): the blocking machinery goes — Overflow deletes and the bullets prove it #2025's body is missing, is posted as a comment there.
I shipped two over-promises and the reviewers caught both. Worth flagging because they are
the exact failure class this ticket exists to remove:
input()docstring and README said "every drop is counted at the port andreadable in
graph". Every Python processor is helper-placed, and a helper-placeddestination's node carries no metrics at all (
open_iceoryx2_service_op.rs:726). So theone audience that can read that sentence is the one it is false for. Removed from both; they
now state only that neither profile promises delivery and no link blocks a producer.
_engine.pyiwrite()doc attributed an over-ceiling write to the consuming port's dropcount. It is a producer-side payload byte-size refusal counted in
refused_over_ceiling_count(
output.rs:195) — the bag never reaches a subscriber, so no mailbox eviction can account forit. Two unrelated mechanisms had been conflated.
This is the same clause your memory already flags: "No loss is silent" is not fully met —
helper-placed processors and the iceoryx2 subscriber ring stay uncounted. Nothing in this PR
advertises otherwise now, and the clause remains something
/ship-changemust amend rather thanfold in as delivered.
Two things outside the ticket's census that I fixed because leaving them would have shipped a
defect:
cli.py:320— thestreamlib newscaffold declaredlatest. A miss there ships a brokenscaffold to every new user.
iceoryx2::delivery_profile's tests were in neithertest.yml's named slice nor thextaskmirror, so the invariant this ticket's exit criteria lean on ran in no CI job — despite two of
them anchoring
<!-- verify: -->lines inARCHITECTURE.md. Nine tests added by name to bothlists (36 entries each, byte-identical). Named individually rather than by module prefix, per the
standing rule that a prefix enrols whatever the module holds next.
One finding for #2025, not actionable here: its
REMOVED: Losslessbullet is case-sensitiveand will match
surface_image_exchange.rs:62("Lossless and un-inflated" — a PNG claim, not aprofile). That is the same carve-out the change file already made in prose for lowercase
losslessathandlers.rs:286,300, so the bullet cannot pass as written. Raised on #2025.Summary by CodeRabbit
New Features
newestandordered.newestprioritizes the latest available data;orderedpreserves publication order.Documentation
Tests