Indexing payments management post audit fixes#1334
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…ion-start anchor getMaxNextClaim() under SCOPE_PENDING used block.timestamp as the window start, but update() applies new terms retroactively from _agreementCollectionStartAt and never advances lastCollectionAt. When (now - collectionStart) exceeded (rcau.endsAt - now), the pre-update envelope under-reserved escrow relative to the very next collect(), risking PaymentsEscrow.collect reverts on insufficient balance via RAM._reconcileAgreement. Switch the windowStart to _agreementCollectionStartAt for Accepted agreements (the only state where update() can promote the pending RCAU); other states keep block.timestamp since pending is structurally unreachable for promotion there. Adds three regression tests in getMaxNextClaim.t.sol asserting the envelope invariant (post-update collect amount <= pre-update getMaxNextClaim): deterministic never-collected path, post-prior-collect path, and a bounded fuzz across (elapsed, rate, maxSec, window).
…ents After the upcoming invariant fix, selfMintingOffset cycles 0 -> X -> 0 on every distributeIssuance call. Continuing to emit either event would force a choice between steady-state noise and increasingly arbitrary "is this transition meaningful" gating. Once the path collapses, the offset carries no observer-actionable signal anyway. The accounting consumers care about (self-minting + allocator-minting = expected) is already covered by IssuanceDistributed, IssuanceSelfMintAllowance / IssuanceSelfMintAllowanceAggregate, IssuancePerBlockUpdated, TargetAllocationUpdated, and Pausable's Paused / Unpaused. No tests reference the offset events.
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Pull request overview
Updates issuance accounting and recurring-payment max-claim calculations to address post-audit edge cases where budgeting/envelope computations could diverge from actual mint/collect behavior.
Changes:
- Refactors
IssuanceAllocatorto use a single “pending distribution” path for allocator-minting and to maintain self-minting offset accumulation unconditionally. - Adds allocator distribution tests covering “no prior accumulated offset” scenarios and budgeting bounds.
- Fixes
RecurringCollector.getMaxNextClaim(..., SCOPE_PENDING)for pending updates by anchoring the max-claim window to the agreement’s actual collection start; adds regression + fuzz tests to enforce the envelope invariant acrossupdate().
Reviewed changes
Copilot reviewed 4 out of 4 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
packages/issuance/test/unit/allocator/distribution.t.sol |
Adds unit/fuzz coverage for pending distribution behavior when starting from a clean offset state. |
packages/issuance/contracts/allocate/IssuanceAllocator.sol |
Unifies distribution logic via _distributePendingIssuance, changes self-minting offset accumulation semantics, and removes offset-specific events. |
packages/horizon/test/unit/payments/recurring-collector/getMaxNextClaim.t.sol |
Adds regression + fuzz tests ensuring pre-update max-claim envelopes cover post-update collection amounts. |
packages/horizon/contracts/payments/collectors/RecurringCollector.sol |
Fixes pending-scope max-claim calculation to use the agreement’s true collection start for Accepted agreements. |
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Indexing payments management post audit fixes
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #1334 +/- ##
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- Coverage 91.16% 91.16% -0.01%
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Files 81 81
Lines 5342 5318 -24
Branches 975 969 -6
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- Hits 4870 4848 -22
+ Misses 449 448 -1
+ Partials 23 22 -1
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Four tests covering the case where the governor calls distributePendingIssuance() with selfMintingOffset == 0 and a non-empty undistributed range with totalSelfMintingRate > 0: - DefaultGetsOwnRateOnly: full flush over-mints to default by totalSelfMintingRate * blocks. - MixedTargets: same with mixed allocator/self-minting allocations. - ToBlock_Partial: partial flush exceeds defaultRate * K; cumulative after subsequent flush should restore per-rate * total blocks. - StaysWithinAllocatorBudget fuzz: allocator-minted never exceeds (issuancePerBlock - totalSelfMintingRate) * blocks. All four fail. Fixed in the next commit.
…e distribution path The Self-Minting Accumulation invariant (selfMintingOffset = cumulative self-minting share over the undistributed range) was only conditionally maintained: _advanceSelfMintingBlock accumulated when paused() || 0 < offsetBefore. The pending math depends on it, and distributePendingIssuance reaches that math from states where the invariant silently fails - producing total minted > issuancePerBlock * blocks. Two coupled changes for full correctness: 1. Drop the conditional gate in _advanceSelfMintingBlock so the invariant holds in every reachable state. 2. Collapse _distributeIssuance's offset-vs-normal dispatch to delegate to _distributePendingIssuance, and delete _performNormalDistribution. It was reachable post-partial-flush (where the reconcile formula clamps offset to 0) and would mint per-rate without seeing that self-minting was already authorized for the post-partial range, under-distributing to allocator targets. The four bug-demonstration tests now pass.
Now a single ternary; the helper added no abstraction value. Inlining puts lastDistributionBlock and selfMintingOffset updates next to each other where the period accounting reads naturally end-to-end.
…gCollector Removes three errors that were declared but never thrown: - RecurringCollectorAgreementNotFound - RecurringCollectorInvalidPaymentType (and its IGraphPayments import) - RecurringCollectorZeroCollectionSeconds Not-collectable conditions go through RecurringCollectorAgreementNotCollectable with an AgreementNotCollectableReason; these three were stragglers from an earlier shape of the API.
RecurringCollector accept/update — describe the actual auth model: The empty-signature path on accept and update authorizes via stored offer hash (registered through IAgreementCollector.offer), not via a callback to a now-removed IAgreementOwner.approveAgreement. Update the natspec to describe the actual mechanism, capture the idempotent re-accept / re-apply paths, and move the deadline check out of the signature-conditional since it applies to both paths. Sweep a stale comment in the gas test along the way. Other correctness fixes: - IRecurringCollector.RecurringCollectorAgreementInvalidCollectionWindow: notice claimed 'elapsed endsAt' but the error fires on (max - min) below MIN_SECONDS_COLLECTION_WINDOW. Rewrite to match. - IRecurringCollector.cancel: notice said 'indexing agreement'; replace with 'Recurring Collection Agreement' and add a dev note covering caller, state preconditions, and pending-RCAU cleanup. - IRecurringAgreementManagement.ProviderRemoved: notice said 'balance zero', but tracking is dropped at balance < 2^minResidualEscrowFactor. Reword. - IRecurringAgreements.getTotalEscrowDeficit: described as a per-provider sum; it is per (collector, provider) pair. Match the storage docstring. Trim repetition: - RecurringCollector impls (collect/accept/cancel/update, pauseGuardians): drop @notice/@dev that just restated the interface; keep @inheritdoc plus any genuinely new @dev (only update has one — the pricing-applies-immediately note). pauseGuardians now uses @inheritdoc.
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…eClaimsClaimNotFound revert Closes the two real coverage gaps from PR #1331: - RewardsManager.supportsInterface(IProviderEligibilityManagement.interfaceId) was the only OR-clause never asserted true. - StakeClaims.processStakeClaim's claim-not-found require was never exercised; reachable only via library misuse, so test directly through a thin harness with empty mappings.
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May 9, 2026 10:24
Hardhat (production deploy): - Toolshed base sets viaIR=true, runs=100, evm_version=cancun, solc 0.8.35, hardhat network hardfork pinned to cancun. Hardhat 2.28.6 (catalog ^2.28.0) for the upstream solc resolver fix; older versions mis-resolve 0.8.35 to its pre.1 build. - interfaces, horizon, data-edge bumped from older solc pins (0.8.27 / 0.8.12). - horizon and subgraph-service hardhat configs simplified to inherit cleanly. - RecurringCollector deployed bytecode 22.029 KiB (2.5 KiB EIP-170 headroom); ~10-15% reduction across deployable contracts vs the prior runs=20/paris baseline. Foundry: fast default, opt-in production: - [profile.default]: optimizer/viaIR off, evm_version=cancun, solc=0.8.35. Forge build 2-9s instead of ~4 min. - [profile.prod]: optimizer + runs=100 + viaIR for prod-matching CI runs. Root `pnpm test:prod` sets FOUNDRY_PROFILE=prod for the recursive run. - lint_on_build = false: forge 1.7's auto-lint duplicates pnpm lint:forge and infinite-loops on testing's pnpm-hoisted node_modules symlink cycle. - ignored_warnings_from = ["node_modules"] silences third-party warnings. Test changes induced by the compiler config: - HorizonStakingShared._slash split into _expectSlashEmits and _assertSlashStateAfter; block-scoping in AgreementLifecycle and FullStackHarness — legacy pipeline stack relief for [profile.prod]. - RecurringCollectorCallbackGas warm-path moved forge → hardhat (forge default is unoptimized, exceeds the assertion's 500-gas tolerance). - getMaxNextClaim PastEndsAt fuzz tests use vm.getBlockTimestamp() instead of `block.timestamp` capture — viaIR treats TIMESTAMP as pure and CSE-eliminates the local across vm.warp, re-reading post-warp. - Solc warning cleanups across test files (unused locals / params, missing view/pure, dead isDelegationSlashingEnabled in _slash). 1509 forge tests pass across all four packages under both profiles.
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Additional fixes since #1331.
IssuanceAllocator:distributePendingIssuanceover-issuanceThe Self-Minting Accumulation invariant (
selfMintingOffset= cumulative self-minting share over the undistributed range) was only conditionally maintained —_advanceSelfMintingBlockskipped accumulation unlesspaused() || 0 < offsetBefore.distributePendingIssuancereaches the dependent pending math from states where the invariant silently fails, producingissuancePerBlock * blocks < total minted.Fix:
_advanceSelfMintingBlockso the invariant holds always._distributeIssuanceinto_distributePendingIssuance; delete_performNormalDistribution. The deleted path was reachable post-partial-flush (reconcile clamps offset to 0) and re-minted per-rate, under-distributing to allocator targets.Demonstration tests (committed failing pre-fix) in distribution.t.sol.
Drive-bys: drop
SelfMintingOffset{Accumulated,Reconciled}events; inline_reconcileSelfMintingOffset.RecurringCollector: pending-RCAU max-claim window misalignmentgetMaxNextClaim()underSCOPE_PENDINGusedblock.timestampas window start, butupdate()applies new terms retroactively from_agreementCollectionStartAtand never advanceslastCollectionAt. When(rcau.endsAt - now) < (now - collectionStart), the pre-update envelope under-reserved escrow vs. the very nextcollect(), riskingPaymentsEscrow.collectreverts viaRAM._reconcileAgreement.Fix: use
_agreementCollectionStartAtaswindowStartforAcceptedagreements (the only state whereupdate()can promote the pending RCAU); other states keepblock.timestamp.Regression tests in getMaxNextClaim.t.sol assert
post-update collect <= pre-update getMaxNextClaim.Minor
IRecurringCollectorerrors (RecurringCollectorAgreementNotFound,RecurringCollectorInvalidPaymentType,RecurringCollectorZeroCollectionSeconds) and the now-redundantIGraphPaymentsimport.IRecurringCollector.accept/cancel/update(idempotency, contract-approval via stored offer hash),IRecurringAgreementManagement.PairUntracked(residual-threshold semantics),IRecurringAgreements.getTotalEscrowDeficit(per-pair, not per-provider), andRecurringCollectorAgreementInvalidCollectionWindow.Compiler config
Hardhat (production): toolshed base now
solc 0.8.35,viaIR=true,runs=100,evm_version=cancun(was 0.8.27, paris, no viaIR; horizon/subgraph-service inherit cleanly with no per-package overrides).RecurringCollectordeployed bytecode 24,598 B (over EIP-170 at the priorruns=20/paris) → 22,029 B (2.5 KiB headroom). ~10–15% reduction across deployable contracts.