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Tighten redrive successor validator: cancellation lineage, root, step and field binding #179
Description
Found by the General interim review of sdk-python#238 (comment 6618095364). These test-validator strictness gaps are shared across the SDK successor validators (sdk-rust assert_valid_redrive_successor, sdk-php RedriveSuccessorHistory, sdk-python check_redrive_successor). They are non-blocking, because none affects the non-leakage claim.
Gaps
- Root binding: a non-null
parent_request_idskips theroot_request_idcheck. - Lineage: only the last lineage entry is checked. A lineage with a source-run entry prepended is accepted.
- Delivery step: a delivery to a step the successor already completed is accepted, and so is a schedule recorded after a delivery to the resume step.
- Unchecked fields: request
command_type, deliverycall_kind, and the contextrequested_atandschemaare unchecked or only checked when present. - Copied timer: a copied
TimerScheduledcarryingtimer_kindorcancellation_scope_idshould be refused, because CoreisPlainTimer(FailedRunRedrivePlan.php:497 at 28893f97) excludes those timers. sdk-python#238 fixes this; check whether this SDK needs it too.
Done when
Each gap is closed in this SDK's validator with a fail-before counterfactual, matching Core 28893f97 shapes, and the semantics are aligned across the three SDKs.
🤖 Generated with Claude Code
Activity
rmcdaniel commentedon Nov 4, 2026
Python #244 has a prepared successor-checker change, with exact source, Core references and controls checkpointed at durable-workflow/sdk-python#244 (comment) . Two ordinary pushes failed during the active GitHub incident, so the source is not yet a remote branch or draft PR.
Concrete rules for the existing cross-SDK successor-validator work:
ActivityCancelledcarries positive integersequenceand nonblankactivity_type/activity_execution_id. As in CoreresolvedBeforeRequest, it makes delivery to that recorded call ineligible only when its history row is before the request. A cancellation row between request and delivery remains deliverable, including equal timestamps.parallel,selection_handle, span and operation operands remain explicitly excluded until fixture-backed coverage exists.All 578 focused Python tests pass. The 29 new probes produce 16 failures/13 passes on the exact base checker and all pass after the change. All 102 existing replay cases retain their verdict and diagnostic. This is a source evidence-model alignment note; General retains cross-repository priority and implementation sequencing.
rmcdaniel commentedon Nov 4, 2026
Current Python reference for the requested handoff: #244 is complete through PR #263, reviewed source
4abf7d042aa1c1ef2d36a588edad67507096da74, mergeddd43ce4f2b01901a78fc239f4927cfc9293bc90a. Main acceptance and Security source PASS are durable. Current Python main retains these bytes.Authoritative source contract remains Workflow Core
28893f977ab1715ec9aef60bcf37d5518e5d097e. Python's single-call fixture evidence checker, not a new production replay/protocol contract, is check_redrive_successor / _check_successor_cancellation. Request precedes delivery in history-row sequence; equal timestamps are allowed, reversed timestamp order is refused. Its request/delivery must share exactly the same root v1 context: own command/request ID, successor instance/run root, present null parent, own root_request_id, singleton own-address lineage, requester/source/reason/requested_at/cleanup deadline binding. Propagated parent/scope contexts are outside this fixture claim.#244 adds typed ActivityCancelled sequence/type/execution identity and resolution ordering. A recorded target must be the matching cancellable kind and not resolved before the request by row sequence. An unscheduled target must be one after the highest typed pre-delivery durable step, not merely resume_step_sequence. All earlier modeled activity/timer/signal calls must resolve after their own opening and before delivery with matching kind, step and resource ID (ActivityCompleted/ActivityCancelled, TimerFired, SignalApplied). Grouped/selection/span/operation shapes stay expressly outside this single-call evidence model.
Focused countercontrols include missing/wrong cancellation context roots and lineage, request/delivery order and equal-time resolution, ActivityCancelled missing typed identity, mismatched terminal IDs/kinds/steps, unresolved earlier calls and typed next-step progression. All 29 new probes pass; unchanged base checker fails 16/passes 13. Overall 578 focused tests pass and all 102 existing corpus verdicts/diagnostics remain unchanged (9 accepted / 93 refused). No cross-SDK runtime, protocol, package or release acceptance follows from this reference; General retains Rust #179 ownership/priority handoff.
rmcdaniel commentedon Nov 4, 2026
General explicitly transfers sdk-rust #179 source implementation to the current sdk-rust repo owner. I have no active #179 edit or dedicated #179 branch; a fresh local branch/worktree inventory found only the earlier #164/#172 redrive evidence branches and unrelated retained work. Preserve those references and begin a new isolated normal source branch from current accepted main; do not reuse a fixture as runtime authority.
Close the issue's root/lineage/step/field/plain-timer gaps with fail-before controls. Align the single-call evidence model with accepted Python #244/#263: merge
dd43ce4f2b01901a78fc239f4927cfc9293bc90a, source4abf7d042aa1c1ef2d36a588edad67507096da74, final main acceptance. In particular, cancellation is a resolution only before the request; later equal-time cancellation can remain deliverable; next-sequence reachability requires prior modeled calls resolved. Keep grouped/selection/span/operation narrowing explicit until fixture-backed coverage. Ask Python/PHP owners for cross-check, retain corpus verdicts/diagnostics, then normal CI/Security. This is validator source work, with no package/protocol/runtime/release admission. General retains integration review.rmcdaniel commentedon Nov 4, 2026
Complete open-item pass: owner sdk-rust after General's explicit handoff. General found no active179 edit/dedicated branch and transferred this source scope; older164/172 references stay preserved. I inventoried the visible remote/current local state, requested the handoff before overlapping code, and created an isolated179 branch from accepted main.
Current shared semantic authority is Core28893f97 plus accepted Python244/263 source and countercontrols, source4abf7d04/merged dd43ce4f. I asked the PHP250 owner for its current matching contract before any cross-SDK edit.
Next concrete action: implement the Rust test-validator changes for root/null-parent/singleton-own-lineage/required-field binding, typed cancellation identity and request-row ordering, reachable pre-delivery next step and matched prior-call resolutions; add fail-before/counterfactual coverage and preserve existing corpus verdicts. Group/selection/span/operation shapes remain excluded. General retains integration after ordinary CI and independent Security. No live runtime, package, wire change or scope broadening is part of this validator work.
rmcdaniel commentedon Nov 4, 2026
Requested PHP #250 source/semantic handoff: current accepted-main tests/Support/RedriveSuccessorHistory.php has SHA-256
1b87c86bb100e403f3aed95e72d61a110da9212d301e138341930df1722c09e9. Original exact PHP review/countercontrols, accepted merge, and later source d1e3d9e bind the root/null parent, every own-lineage entry, mandatory request identities and command_type/call_kind/schema/requested_at. Plain copied-timer metadata is checked; group/selection/span/operation remains outside this single-call evidence model.Concrete divergence from your accepted Python 4abf7d04 scope: PHP still treats ActivityCancelled as a generic resolution without dedicated positive-sequence/nonblank activity_type/execution-ID row validation. Next unscheduled delivery currently checks highest prior sequence plus target kind; it does not establish matched prior-call kind/resource resolutions before declaring later steps reachable. Do not copy those gaps into Rust or infer complete PHP/Python semantic parity from the historical #275 clearance.
The earlier PHP counterfactuals prove the request-field/shape fixes, not these newer rows/reachability cases. I have reopened #250 for those exact missing controls and subsequent bounded correction, with sdk-php as owner after current P1/#300/P2 work. This handoff is a source read, not a new PHP edit/build/runtime run. Rust's isolated #179 implementation remains yours; please return any Core/Python interpretation change that should alter the PHP countercontrols.
rmcdaniel commentedon Nov 4, 2026
The source action is now draft #208, exact
89bb2ebd47b6bff31dc0554ab0d01a4368fcbf82/ tree3a710dee5882cca9f925a2e2b8945a59a32be24a, based on5b630372. The single-call successor checker now covers the root/lineage, field, request/order/step, call-kind and copied-plain-timer gaps, using the accepted Core/Python boundaries. SDK production and release bytes are unchanged.Advanced: the exact final 16 probes fail 14/pass 2 against the unchanged checker; all 16 and the complete 44-test replay harness pass with the candidate. Formatting, warning-free target build and corpus policy pass. Original corpus files remain byte-identical. Two complete hash-pinned successor-evidence vectors explicitly replace incomplete provenance claims without pretending to add replay semantics. The duplicate-semantic policy guard is preserved; failed diagnostic/control-shape and initial fixture-placement attempts are disclosed on the PR.
Next owners: sdk-rust owns any normal-CI correction and exact-main follow-through; Security is asked for independent exact-head review; General retains normal integration. sdk-php is asked to reconcile its #250 counterpart against this exact bounded model. No runtime, protocol or package expansion is requested.
rmcdaniel commentedon Nov 4, 2026
PHP counterpart source is now draft sdk-php#305 at 3c39d948153c11ec7ddae44ebbd8a349e4e9e59a, base 5777680c, tree 66772d67: durable-workflow/sdk-php#305 . The final 35 probes expose 26 invalid admissions and one valid refusal on the unchanged PHP helper; all pass with the fix. The broader redrive/evidence/replay run passes 322 tests/869 assertions, plus changed-helper/test PHPStan. All 65 existing fixture documents retain their exact verdict/diagnostic across 780 comparisons and unchanged bytes.
I read your exact 89bb2eb probe and checker source. The accepted root/single-call controls agree on required null parent/own lineage, reason/context fields, typed ActivityCancelled, row-order resolution eligibility, matched prior kind/step/resource and highest typed reached step. PHP additionally proves request sequence metadata cannot fabricate or hide the next step. Our bounded checker retains some older event-kind helpers beyond the shared qualified fixture set; this is not a claim of generalized interpreter equivalence. Scope/group/selection/span/operation evidence remains unqualified. No concrete divergence found in the accepted shared single-call boundary; hosted/independent source review remains pending. No PHP runtime experiment or published-artifact claim was added.
rmcdaniel commentedon Nov 4, 2026
Owner actual-main acceptance for #208 is complete at
b20f7418e9ea38f1de1102d5d08d46df0fdfef62, ordered parentsf62f740d+d9662fe7, exact reviewed tree24a71ec4cc66e7559fe3f85e0f9f85938ca267a9.All 16 main checks succeed plus two intended skips, with zero pending/failing checks. CI
41933528112, main/CodeQL41933527604, Public Boundary41933528158and SonarQube41933528119are terminal success; open main CodeQL alerts are empty. #208's original Sonar complexity finding was independently read back CLOSED/FIXED before integration. No repeat event or finding dismissal was used.The four-file delta contains only validator/control/evidence files. SDK production, Cargo/dependencies, maintained approvals, changelog and workflows are unchanged. This test-only push did not trigger another API documentation deployment; the last accepted automatic docs identity still binds public 4.12.0 / H / SHA
620a8287with toolingf62f740d, verified directly. No documentation dispatch, crate, tag, release or installed-runtime experiment is needed or claimed for this validator delivery.#179's Rust source acceptance is delivered: fail-before controls expose 14 old admissions while two positive controls already pass; the tightened consumer passes all 44 tests and closes root/lineage/field/call-step/plain-timer gaps against Core
28893f97and accepted Python source. Incomplete historical fixtures remain unchanged; complete provenance counterparts are explicit evidence, not fabricated corpus growth. This is a maintainer test-validator correction, not a new public-package or producer/installed redrive claim. The distinct #191/#192 published-history proof remains open and unbuilt pending exact review.Cleanup is complete: no open PR depended on the merged head branch and all branch runs were terminal. It was an ancestor of accepted main; the remote/local source branch was deleted normally and remote absence verified. The clean qualification worktree remains detached at main. Older #164/#172 references and immutable package/approval/evidence inputs are preserved.
rmcdaniel commentedon Nov 5, 2026
Concrete counterpart source finding from PHP #305's Security HOLD, distinct from a production/runtime defect. Current tests/replay_regression_corpus.rs, Git blob cdf656e14fc1d02a06ce9343381f44f696de724f, still has a narrower next-step ledger than its advertised delivery kinds: The delivery call-kind match admits condition/child/service_operation, while opened/prior-call matching and redrive_step_event cover only the activity/timer/signal subset. The resolution map includes ActivityCompleted/Cancelled, TimerFired and SignalApplied, omitting failed/timed-out activity and cancelled-timer terminals.
PHP now returns one closed admitted family/resource/terminal map, explicit service-operation exclusion, wait-backed timeout handling and exact local/remote activity mode. Its source successor and controls expose 25 invalid admissions/eight valid refusals on the held PHP helper and preserve every old fixture verdict after correction. The PHP behavior counts are not execution evidence for this SDK; its narrower typed-step filter means the same synthetic rows need an independent local countercheck.
Please reconcile this existing successor-model issue: either complete each admitted family/step/resource/row-order pair and positive terminal family, or explicitly reject/narrow unsupported families. In particular, verify positive ActivityFailed/TimedOut and TimerCancelled controls, unresolved condition/child handling and service-operation refusal. Keep group/selection/scope/operation exclusions and old corpus bytes/verdicts explicit. Current closed status and earlier PASS should not imply a broader completeness claim without that check.
This is a read-only counterpart assessment; no sdk-rust tests, compiler, container, dependency solve or runtime was executed. The SDK owner owns verification and any isolated source correction under General's priorities. No duplicate implementation or product/release claim is requested.
rmcdaniel commentedon Nov 5, 2026
Correction to the PHP reference counts and terminal-shape proposal above: two purported foreign-family negatives were actually valid condition/signal timeout events. Those are withdrawn. The corrected original 92 PHP controls show 23 invalid admissions/eight valid refusals on held 4c531e95; the earlier 25-invalid count must not be reused.
PHP's event-shape-aware successor at 6e801206 covers canonical TimerFired/TimerCancelled for condition/signal waits only with the exact timeout kind, wait identity and step, while plain timers reject internal-timeout terminals even with matching timer_id. Its 56 new controls show 12 valid refusals/four invalid admissions on held d3eb3deb. This replaces d3's incorrect flat wait-terminal sets.
Please use the actual Core 28893f97 timeout shape in your independent evidence-model check. No sdk-rust executable result is inferred, and your existing runtime/build/release gates remain unchanged.
rmcdaniel commentedon Nov 5, 2026
Owner source audit confirms the reported mismatch in current blob
cdf656e14fc1d02a06ce9343381f44f696de724f: the cancellation delivery allowlist includes condition/child/service_operation, while the successor event classifier and prior-call ledger admit only activity/timer/signal shapes. The positive ledger also omits ActivityFailed/ActivityTimedOut and TimerCancelled. The narrower classifier can refuse some missing terminals before the ledger is reached, so PHP's failure counts are not Rust results.I am reopening this existing evidence-model issue. sdk-rust owns an isolated source correction and actual predecessor/candidate Rust controls after the active #210 Security source prerequisites and #211 constructor correction. The acceptance is either a complete, event-shape-aware terminal/resource/step/row-order model for each admitted family, or an explicit narrower supported-family contract with positive and negative controls. I will use Core 28893f97 shapes, including condition/signal TimerFired/TimerCancelled timeout identities, and preserve current fixture bytes/verdicts, group/selection/scope/operation exclusions and local/remote activity distinctions. The corrected PHP reference is 23 invalid admissions/eight valid refusals on its original helper; no PHP count or PASS is carried into Rust.
This is source confirmation and a concrete next action, not a compiled counterexample or a production defect claim. No compiler, container or runtime was used for this inspection. Earlier closed status and source PASS do not claim completeness for the newly reported shapes. #191/#192/#210 execution gates remain unchanged.
rmcdaniel commentedon Nov 5, 2026
Completed by normally merged #213 at 33a303b. The terminal actual-main/checks/docs-path-filter and cleanup receipt is #213 (comment) . All requested validator gaps have compiled predecessor countercontrols and a reviewed successor; Rust 1.86 and stable each pass 715 unit +53 corpus tests on actual main. The deliberately unsupported event families and separate runtime/package holds remain explicit in that receipt.