fix(platform)!: refund sponsor-paid document storage to the gas sponsor (PV14) - #5238
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…or (PV14) Gas sponsorship (#4826) lets a contract owner pay the storage and processing fees of token-paid document actions, but storage refunds followed the storage flags, which named the document owner. A user could delete or shrink a sponsored document and be refunded storage the sponsor paid for. - execute_event v1 names a paying sponsor as the owner in the storage flags of the batch's document writes (record_gas_sponsor_as_storage_owner). - Contested document insert v1 names whoever the document's flags name on the contest's end date entries. - Document update v1 keeps a stored document the sponsor holds with the sponsor when an update that is not sponsored rewrites it, a transfer included (storage_held_by_gas_sponsor). New index entries the update adds keep naming whoever pays for them. - A moderator's restore on a type that offers sponsorship names the contract owner. - Book and v14 note describe the rules, including GroveDB's flag merge limits and the sponsor's remaining storage cost. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Navigate logical layers of code changes, visualize relationships, and explore their blast radius. No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Repository: dashpay/platform/.coderabbit.yaml Review profile: CHILL Plan: Advanced Run ID: 📒 Files selected for processing (4)
Included review availability: This review used your included allowance. Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThis change records gas-sponsor ownership in storage flags for eligible document operations. Document updates and contested-document entries use storage ownership when assigning refunds. Tests and documentation describe refund attribution. A Dashmate migration test derives its expected config format version from the migration list and package version. ChangesSponsored Storage Ownership
Dashmate Migration Test
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Bug fix Suggested reviewers: Merge Risk: 🟡 Moderate · up to An unsponsored update can assign newly funded history storage to the previous sponsor, allowing a subsequent same-block replacement to refund the wrong identity. Distinguish new history versions from replacements before merging. Security Architecture ReviewSecurity architecture risk: 🟡 Moderate · up to The change addresses sponsor-funded refund extraction and keeps sponsor selection tied to the validated payer. However, a newly created history version can inherit the original sponsor even when the user pays for it, allowing a subsequent shrink to credit the sponsor instead of that version’s payer. This is a bounded financial-ownership concern; failure recovery and some storage-transition behavior remain incompletely verified. Retained concerns
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⛔ Final review complete — 1 blocking finding(s) (commit 1991c51) · triage: critical |
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Review comments at
@packages/rs-drive/src/state_transition_action/action_convert_to_operations/contract/contract_user_moderation_transition.rs:
- Around line 284-299: Update the moderation restore storage flags to always use
owner_id as the storage owner. Remove the
document_type_offers_gas_sponsorship-based selection from this path so the
stored owner matches the document owner.
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book/src/contract-keywords/deletion.mdbook/src/contract-keywords/moderator-abilities.mdbook/src/contract-keywords/token-cost.mdbook/src/data-model/contract-moderation.mdbook/src/fees/overview.mdpackages/rs-drive-abci/src/execution/platform_events/state_transition_processing/execute_event/v1/mod.rspackages/rs-drive-abci/src/execution/platform_events/state_transition_processing/validate_fees_of_event/v1/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/document/action_fees.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/document/gas_sponsorship.rspackages/rs-drive/src/drive/document/insert_contested/add_contested_document_for_contract_operations/v1/mod.rspackages/rs-drive/src/drive/document/update/internal/update_document_for_contract_operations/v1/mod.rspackages/rs-drive/src/state_transition_action/action_convert_to_operations/contract/contract_user_moderation_transition.rspackages/rs-drive/src/state_transition_action/batch/mod.rspackages/rs-drive/src/util/object_size_info/document_info.rspackages/rs-platform-version/src/version/v14.rs
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… migration test Since the 5.0.0-beta.1 bump the package version is newer than the newest config migration (4.2.0), so a migrated config records the package version. The test hard-coded 4.2.0; it now expects what getConfigFormatVersion gives for this build. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…V14) A restore is not sponsored: the moderator who signs it pays for the bytes, and a gas sponsor who held the deleted document's storage was already settled by the deletion. Naming the contract owner could credit them with a moderator's payment, so the restore keeps the existing rule (the document owner), and the comments and book say why. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Final validation — Phase 1 + Phase 2
The PV14 sponsor ownership changes are correctly isolated, and ordinary sponsored, unsponsored, contested, and moderation paths generally follow the intended refund owner. However, history-keeping documents can rewrite the same timestamped history key within one block; the unconditional history exclusion then allows a user-funded rewrite to replace sponsor ownership, misdirecting later storage refunds. Additional direct coverage is also needed for contested end-date entries and transfers of sponsor-held documents.
🔴 1 blocking | 🟡 2 suggestion(s) | 💬 1 nitpick(s)
Review provenance
Source: reviewer 1: muse-spark-1.3-contributor (agent: phase1-reviewer, role: general); reviewer 2: gpt-6.1-sol (agent: phase2-reviewer, role: general); reviewer 3: gpt-6.1-sol (agent: phase2-reviewer, role: architecture-layering); reviewer 4: gpt-6.1-sol (agent: phase2-reviewer, role: platform-versioning); reviewer 5: muse-spark-1.3-contributor (agent: phase1-reviewer, role: rust-quality); reviewer 6: gpt-6.1-sol (agent: phase2-reviewer, role: rust-quality); reviewer 7: gpt-6.1-sol (agent: phase2-reviewer, role: security-auditor); final verifier: gpt-6.1-sol (agent: sol-verifier, role: final-verifier)
- Triage:
criticalbygpt-6.1-sol(effort low) — The large, intricate diff changes consensus-versioned storage ownership and refund routing in document execution paths, directly affecting funds movement in execute_event v1 and Drive document update/contested-insert operations. - Phase 1 reviewers:
muse-spark-1.3-contributor— general (completed, effort xhigh); agentphase1-reviewer,muse-spark-1.3-contributor— rust-quality (completed, effort xhigh); agentphase1-reviewer - Phase 1 model:
muse-spark-1.3-contributor— not quota-gated; passed overgemini-3.8-flash-high(antigravity below 15% reserve: weekly 13% left, 5h 100% left),glm-5.3-flash(not used above high effort; tier asks max) - Single stage: Phase 1 and Phase 2 reviewed this head side by side, with no blocker gate between them (triage tier)
- Fresh verifier:
gpt-6.1-sol— final-verifier; agentsol-verifier - Phase 2 reviewers:
gpt-6.1-sol— general (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— architecture-layering (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— platform-versioning (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— rust-quality (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— security-auditor (completed, effort xhigh); agentphase2-reviewer
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-drive/src/drive/document/update/internal/update_document_for_contract_operations/v1/mod.rs`:
- [BLOCKING] packages/rs-drive/src/drive/document/update/internal/update_document_for_contract_operations/v1/mod.rs:362-368: Preserve sponsor ownership when a history version is rewritten
`documents_keep_history()` does not guarantee that this write creates a new element. `add_document_to_primary_storage` keys each history version by `encode_date_timestamp(block_info.time_ms)` and inserts it at that key. Multiple updates to the same history-keeping document in one block therefore target the same version key. If the existing version is sponsor-owned and a later unsponsored update changes its size, this condition skips sponsor preservation and passes the current payer's flags to GroveDB. GroveDB's replacement flag merge can then move the refund owner away from the sponsor, even though the overwritten history version contains storage the sponsor paid for. Detect whether the history key already exists and preserve its stored sponsor ownership on replacement, while retaining the current payer for genuinely new history versions. Add a regression covering two same-block updates to a sponsored history-keeping document.
- [SUGGESTION] packages/rs-drive/src/drive/document/update/internal/update_document_for_contract_operations/v1/mod.rs:369-375: Avoid cloning the full document for a storage-owner override
The sponsor-held branch clones `DocumentAndContractInfo` only to change the primary write's storage flags. In the normal `DocumentOwnedInfo` update, that clone recursively copies the document properties and their values; `DocumentAndSerialization` also copies the serialized byte vector. The temporary primary-storage view should borrow the document and serialization and clone only the storage flags, leaving the original info for index processing. This avoids payload-sized allocation and copying on sponsor-held updates.
In `packages/rs-drive/src/drive/document/insert_contested/add_contested_document_for_contract_operations/v1/mod.rs`:
- [SUGGESTION] packages/rs-drive/src/drive/document/insert_contested/add_contested_document_for_contract_operations/v1/mod.rs:99-108: Add direct coverage for sponsored contested entries and sponsor-held transfers
The new logic changes two refund-owner paths that are not exercised by the added tests. A sponsored contested creation must be followed by a contender that moves the no-locking contest end date, verifying that the removed end-date entry refunds the original sponsor and the replacement entry names the second contender's payer. A transfer of a sponsor-held document must also verify that the primary storage remains sponsor-owned after an unsponsored update. These cases directly cover the contested helper's storage-flag lookup and the transfer-inclusive update path rather than relying only on ordinary document create/replace/delete tests.
In `packages/rs-drive/src/state_transition_action/batch/mod.rs`:
- [NITPICK] packages/rs-drive/src/state_transition_action/batch/mod.rs:241: Restrict the sponsorship predicate to the drive crate
`document_type_offers_gas_sponsorship` is declared `pub`, but the only caller is the update implementation inside `rs-drive`; unlike `record_gas_sponsor_as_storage_owner`, it is not used by `rs-drive-abci`. Making it `pub(crate)` expresses the actual boundary and avoids exposing a PV14-internal predicate as part of Drive's public API.
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Your move: thepastaclaw requested changes on this head; dismiss the review or push a fix; thepastaclaw left review threads unresolved; resolve them. |
…within its block (PV14) A type keeping history stores each version under the block's time, so a second update to a document in the same block rewrites the version the first wrote, in place. Document update v1 skipped history types when keeping a sponsor-held document with the sponsor, so a user's own rewrite could take that version, and its refund. History versions are never deleted, so naming the sponsor on every version of a sponsor-held document moves no other refund. The primary write now borrows the document with only its storage flags replaced instead of cloning it, the sponsorship predicate is crate private, and tests cover a same-block history rewrite and a transfer of a sponsor-held card. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Re-review — Final validation — Phase 1 + Phase 2
The PV14 sponsorship changes correctly preserve sponsor ownership for existing storage elements, and the previously reported visibility, allocation, and same-block rewrite issues are fixed. One blocking refund-attribution defect remains: the new history logic assigns the predecessor's sponsor ownership to genuinely new history versions written at a later block timestamp.
🔴 1 blocking
Review provenance
Source: reviewer 1: muse-spark-1.3-contributor (agent: phase1-reviewer, role: general); reviewer 2: gpt-6.1-sol (agent: phase2-reviewer, role: general); reviewer 3: muse-spark-1.3-contributor (agent: phase1-reviewer, role: rust-quality); reviewer 4: gpt-6.1-sol (agent: phase2-reviewer, role: architecture-layering); reviewer 5: gpt-6.1-sol (agent: phase2-reviewer, role: platform-versioning); reviewer 6: gpt-6.1-sol (agent: phase2-reviewer, role: rust-quality); reviewer 7: gpt-6.1-sol (agent: phase2-reviewer, role: security-auditor); final verifier: gpt-6.1-sol (agent: sol-verifier, role: final-verifier)
- Triage:
criticalbygpt-6.1-sol(effort low) — The diff intricately changes funds movement and PV14 consensus behavior across sponsored writes, updates, and contested documents, notably in execute_event/v1/mod.rs and update_document_for_contract_operations/v1/mod.rs, by changing stored ownership flags that determine which identity receives storage refunds. - Phase 1 reviewers:
muse-spark-1.3-contributor— general (completed, effort xhigh); agentphase1-reviewer,muse-spark-1.3-contributor— rust-quality (completed, effort xhigh); agentphase1-reviewer - Phase 1 model:
muse-spark-1.3-contributor— not quota-gated; passed overgemini-3.8-flash-high(antigravity below 15% reserve: weekly 13% left, 5h 100% left),glm-5.3-flash(not used above high effort; tier asks max) - Single stage: Phase 1 and Phase 2 reviewed this head side by side, with no blocker gate between them (triage tier)
- Fresh verifier:
gpt-6.1-sol— final-verifier; agentsol-verifier - Phase 2 reviewers:
gpt-6.1-sol— general (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— architecture-layering (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— platform-versioning (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— rust-quality (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— security-auditor (completed, effort xhigh); agentphase2-reviewer
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-drive/src/drive/document/update/internal/update_document_for_contract_operations/v1/mod.rs`:
- [BLOCKING] packages/rs-drive/src/drive/document/update/internal/update_document_for_contract_operations/v1/mod.rs:365-376: Use the current payer for newly appended history versions
The sponsor-preservation check uses the storage flags from the element reached through the history tree's `[0]` current-version reference, but `add_document_to_primary_storage` writes the updated history element under `encode_date_timestamp(block_info.time_ms)`. When an unsponsored update occurs in a later block, that timestamp is a new key: the sponsor-held predecessor remains stored and the user pays for the new version in full. This branch nevertheless replaces the new version's flags with the sponsor's flags. History versions are not deleted, but a newly appended version can still be rewritten and shrunk within its block, producing a refund. That refund is then credited to the sponsor even though the user funded the new version. Preserve the stored sponsor only when the destination history timestamp already exists; retain the current payer's flags when writing a genuinely new history key. Add a regression using distinct creation and update block timestamps, followed by a same-block shrink of the newly appended version, and assert that the refund goes to the user.
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Your move: thepastaclaw requested changes on this head; dismiss the review or push a fix; thepastaclaw left review threads unresolved; resolve them. |
…r (PV14) The sponsor-held check reads the current history version through the `[0]` reference, but an update writes its version under the block's time. Only a second update in the same block rewrites a stored version; a version written in a later block is a new element the signer pays for in full. Document update v1 now keeps naming the sponsor on a history version only when this block's version key already exists (a metered existence read, made only for sponsor-held documents of history types), and a test covers a later-block version shrunk in its own block. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Re-review — Final validation — Phase 1 + Phase 2
The PV14 storage-refund ownership changes correctly preserve sponsor ownership for existing history versions, use the current payer for newly appended versions, and avoid the prior document clone. However, the new stateful history-key existence read is executed during real updates but is bypassed by the fee-estimation path, leaving estimated processing costs below actual execution costs for affected updates.
🔴 1 blocking | 🟡 1 suggestion(s)
Review provenance
Source: reviewer 1: muse-spark-1.3-contributor (agent: phase1-reviewer, role: general); reviewer 2: muse-spark-1.3-contributor (agent: phase1-reviewer, role: rust-quality); reviewer 3: gpt-6.1-sol (agent: phase2-reviewer, role: general); reviewer 4: gpt-6.1-sol (agent: phase2-reviewer, role: architecture-layering); reviewer 5: gpt-6.1-sol (agent: phase2-reviewer, role: platform-versioning); reviewer 6: gpt-6.1-sol (agent: phase2-reviewer, role: rust-quality); reviewer 7: gpt-6.1-sol (agent: phase2-reviewer, role: security-auditor); reviewer 8: gpt-6.1-sol (agent: phase2-reviewer, role: general); reviewer 9: gpt-6.1-sol (agent: phase2-reviewer, role: architecture-layering); reviewer 10: gpt-6.1-sol (agent: phase2-reviewer, role: platform-versioning); reviewer 11: gpt-6.1-sol (agent: phase2-reviewer, role: rust-quality); reviewer 12: gpt-6.1-sol (agent: phase2-reviewer, role: security-auditor); final verifier: gpt-6.1-sol (agent: sol-verifier, role: final-verifier)
- Triage:
criticalbygpt-6.1-sol(effort low) — The large, intricate diff changes consensus-critical funds movement and storage-owner accounting across protocol-version-14 document writes, updates, contested inserts, and refunds. - Phase 1 reviewers:
muse-spark-1.3-contributor— general (completed, effort xhigh); agentphase1-reviewer,muse-spark-1.3-contributor— rust-quality (completed, effort xhigh); agentphase1-reviewer - Phase 1 model:
muse-spark-1.3-contributor— not quota-gated; passed overgemini-3.8-flash-high(antigravity below 15% reserve: weekly 13% left, 5h 100% left),glm-5.3-flash(not used above high effort; tier asks max) - Single stage: Phase 1 and Phase 2 reviewed this head side by side, with no blocker gate between them (triage tier)
- Fresh final gate: an independent Phase-2 review ran after iterative findings were reconciled
- Fresh verifier:
gpt-6.1-sol— final-verifier; agentsol-verifier - Phase 2 reviewers:
gpt-6.1-sol— general (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— architecture-layering (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— platform-versioning (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— rust-quality (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— security-auditor (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— general (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— architecture-layering (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— platform-versioning (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— rust-quality (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— security-auditor (completed, effort xhigh); agentphase2-reviewer
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-drive/src/drive/document/update/internal/update_document_for_contract_operations/v1/mod.rs`:
- [BLOCKING] packages/rs-drive/src/drive/document/update/internal/update_document_for_contract_operations/v1/mod.rs:365-383: Account for the new history-key existence read in fee estimation
When a stored document is sponsor-held and keeps history, execution now calls `grove_has_raw` to determine whether the current block's history key already exists. `grove_has_raw` performs a stateful read and appends a `CalculatedCostOperation`. The estimation branch returns earlier at lines 220-234 through `estimate_document_change_as_insert_operations_v1`, so it never performs or prices this new read. A fee validation pass can therefore admit a transition using an estimate lower than the actual execution cost, violating the estimated-greater-than-or-equal-to-actual invariant and potentially underfunding the payer. Add a conservative stateless cost for this lookup to the history-update estimate, or restructure estimation and execution so both paths account for the same operation.
- [SUGGESTION] packages/rs-drive/src/drive/document/update/internal/update_document_for_contract_operations/v1/mod.rs:365-383: Skip the preservation lookup when incoming flags already name the sponsor
For a sponsored update, fee execution has already changed the incoming storage flags to the contract owner. If the previous history version is also sponsor-held, this code still performs the metered `grove_has_raw` lookup even though both outcomes write sponsor-owned flags. Short-circuit the lookup when the incoming `storage_flags` already name `contract.owner_id()`, while retaining it for unsponsored writes that actually need to preserve the prior sponsor. This removes an unnecessary state read and its processing cost from sponsored history updates.
… execution (PV14) Document update v1 probes whether a sponsor-held document's history already holds this block's version. The probe was metered in execution only, while the fee estimate prices an update as an insert and never saw it. Both now charge it at its average-case (stateless) cost: the estimate for every update of a history type that offers sponsorship, execution when it probes, which reads state without metering it again. An update whose flags already name the sponsor (a sponsored one) skips the check and the probe altogether. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…rage-refunds # Conflicts: # packages/dashmate/test/unit/config/configFile/tenderdashImageMigration.spec.js
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Re-review — Final validation — Phase 1 + Phase 2
The complete diff at the exact head keeps the ownership changes behind PV14-selected implementations, and six prior implementation findings are fixed. One blocking refund-ownership gap remains in the persistent current-version pointer of summable history documents; two new regression tests also need more discriminating assertions, while contested sponsorship coverage remains intentionally deferred. Review was static only: the supplied head-matched CI snapshot reports successful Rust workspace tests, with PR Hygiene pending.
🔴 1 blocking | 🟡 2 suggestion(s)
Review provenance
Source: reviewer 1: muse-spark-1.3-contributor (agent: phase1-reviewer, role: general); reviewer 2: muse-spark-1.3-contributor (agent: phase1-reviewer, role: rust-quality); reviewer 3: gpt-6.1-sol (agent: phase2-reviewer, role: general); reviewer 4: gpt-6.1-sol (agent: phase2-reviewer, role: architecture-layering); reviewer 5: gpt-6.1-sol (agent: phase2-reviewer, role: platform-versioning); reviewer 6: gpt-6.1-sol (agent: phase2-reviewer, role: rust-quality); reviewer 7: gpt-6.1-sol (agent: phase2-reviewer, role: security-auditor); reviewer 8: gpt-6.1-sol (agent: phase2-reviewer, role: general); reviewer 9: gpt-6.1-sol (agent: phase2-reviewer, role: architecture-layering); reviewer 10: gpt-6.1-sol (agent: phase2-reviewer, role: platform-versioning); reviewer 11: gpt-6.1-sol (agent: phase2-reviewer, role: rust-quality); reviewer 12: gpt-6.1-sol (agent: phase2-reviewer, role: security-auditor); final verifier: gpt-6.1-sol (agent: sol-verifier, role: final-verifier)
- Triage:
criticalbygpt-6.1-sol(effort low) — The diff intricately changes funds movement and PV14 consensus behavior across sponsored batch execution, storage-flag ownership, contested-document entries, and update_document_for_contract_operations/v1/mod.rs, determining which identity receives storage refunds after updates and deletions. - Phase 1 reviewers:
muse-spark-1.3-contributor— general (completed, effort xhigh); agentphase1-reviewer,muse-spark-1.3-contributor— rust-quality (completed, effort xhigh); agentphase1-reviewer - Phase 1 model:
muse-spark-1.3-contributor— not quota-gated; passed overgemini-3.8-flash-high(antigravity below 15% reserve: weekly 84% left, 5h 5% left),glm-5.3-flash(not used above high effort; tier asks max) - Single stage: Phase 1 and Phase 2 reviewed this head side by side, with no blocker gate between them (triage tier)
- Fresh final gate: an independent Phase-2 review ran after iterative findings were reconciled
- Fresh verifier:
gpt-6.1-sol— final-verifier; agentsol-verifier - Phase 2 reviewers:
gpt-6.1-sol— general (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— architecture-layering (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— platform-versioning (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— rust-quality (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— security-auditor (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— general (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— architecture-layering (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— platform-versioning (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— rust-quality (completed, effort xhigh); agentphase2-reviewer,gpt-6.1-sol— security-auditor (completed, effort xhigh); agentphase2-reviewer
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-drive/src/drive/document/update/internal/update_document_for_contract_operations/v1/mod.rs`:
- [BLOCKING] packages/rs-drive/src/drive/document/update/internal/update_document_for_contract_operations/v1/mod.rs:476-479: Preserve the history pointer's sponsor independently of the new version
The timestamp-key check correctly distinguishes new version rows from existing ones, but the selected flags also reach an element that is always rewritten: the persistent `[0]` current-version pointer. `add_document_to_primary_storage_0` writes that pointer with the supplied flags when contract-level `config.canBeDeleted` is true. For a history-keeping, summable document type, it is a `ReferenceWithSumItem`; the pinned GroveDB dependency serializes its sum with variable width and inserts the reference using its actual serialized size, rather than a fixed specialized storage cost. Consequently, an unsponsored append can resize an existing sponsor-owned pointer while supplying the user's flags, allowing the `UseTheirs` merge to change its refund owner. Later pointer shrinkage can then refund sponsor-funded storage to that user. Preserve a sponsor-held pointer's owner independently of the timestamped version row, while retaining the current payer for genuinely new rows. Add a focused regression for summable history documents with contract-level deletion enabled, and account for any additional ownership reads in estimation and execution.
In `packages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/document/gas_sponsorship.rs`:
- [SUGGESTION] packages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/document/gas_sponsorship.rs:1439-1445: Assert the history probe is charged, not only that execution stays below the estimate
Both assertions are upper-bound checks, so they still pass if execution stops charging the preservation probe. The stateful lookup deliberately accumulates its measured cost into a discarded temporary vector; the preceding `add_history_version_probe_cost` call is its only retained charge. Removing that call would lower the actual processing fee without violating either inequality. Keep this integration test and add a focused cost-operation assertion or controlled fee comparison that verifies the explicit probe charge appears exactly once in estimation and in an unsponsored sponsor-held history rewrite, and is absent from the sponsored execution fast path.
- [SUGGESTION] packages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/document/gas_sponsorship.rs:1337-1341: Make the transfer regression change the primary element's size
The primary-owner assertion does not distinguish the new preservation rule from GroveDB's existing same-size behavior. This fixture already fills the required transfer timestamps, which serialize at fixed width; owner IDs are fixed-width, revisions 1 and 2 have equal encoded width, and the card has no stored price for the transfer to remove. The primary element therefore remains the same size and retains its sponsor-owned flags even if sponsor preservation is bypassed specifically for transfers. The index-refund assertions exercise a separate path. Add a transfer of a card with a stored `$price`, which the transfer transformer removes, and assert both the primary size change and retained sponsor ownership.
| self.add_document_to_primary_storage( | ||
| &document_and_contract_info, | ||
| sponsor_held_primary_storage | ||
| .as_ref() | ||
| .unwrap_or(&document_and_contract_info), |
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🔴 Blocking: Preserve the history pointer's sponsor independently of the new version
The timestamp-key check correctly distinguishes new version rows from existing ones, but the selected flags also reach an element that is always rewritten: the persistent [0] current-version pointer. add_document_to_primary_storage_0 writes that pointer with the supplied flags when contract-level config.canBeDeleted is true. For a history-keeping, summable document type, it is a ReferenceWithSumItem; the pinned GroveDB dependency serializes its sum with variable width and inserts the reference using its actual serialized size, rather than a fixed specialized storage cost. Consequently, an unsponsored append can resize an existing sponsor-owned pointer while supplying the user's flags, allowing the UseTheirs merge to change its refund owner. Later pointer shrinkage can then refund sponsor-funded storage to that user. Preserve a sponsor-held pointer's owner independently of the timestamped version row, while retaining the current payer for genuinely new rows. Add a focused regression for summable history documents with contract-level deletion enabled, and account for any additional ownership reads in estimation and execution.
source: gpt-6.1-sol (phase2-reviewer: security-auditor)
| assert!( | ||
| estimated_fees.processing_fee >= fee_result.processing_fee, | ||
| "estimated {} below the {} the rewrite cost", | ||
| estimated_fees.processing_fee, | ||
| fee_result.processing_fee | ||
| ); | ||
| assert!(estimated_fees.total_base_fee() >= fee_result.total_base_fee()); |
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🟡 Suggestion: Assert the history probe is charged, not only that execution stays below the estimate
Both assertions are upper-bound checks, so they still pass if execution stops charging the preservation probe. The stateful lookup deliberately accumulates its measured cost into a discarded temporary vector; the preceding add_history_version_probe_cost call is its only retained charge. Removing that call would lower the actual processing fee without violating either inequality. Keep this integration test and add a focused cost-operation assertion or controlled fee comparison that verifies the explicit probe charge appears exactly once in estimation and in an unsponsored sponsor-held history rewrite, and is absent from the sponsored execution fast path.
source: gpt-6.1-sol (phase2-reviewer: rust-quality)
| assert_eq!( | ||
| setup.stored_card_storage_owner(), | ||
| Some(setup.contract_owner.id()), | ||
| "the stored card stays the contract owner's" | ||
| ); |
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🟡 Suggestion: Make the transfer regression change the primary element's size
The primary-owner assertion does not distinguish the new preservation rule from GroveDB's existing same-size behavior. This fixture already fills the required transfer timestamps, which serialize at fixed width; owner IDs are fixed-width, revisions 1 and 2 have equal encoded width, and the card has no stored price for the transfer to remove. The primary element therefore remains the same size and retains its sponsor-owned flags even if sponsor preservation is bypassed specifically for transfers. The index-refund assertions exercise a separate path. Add a transfer of a card with a stored $price, which the transfer transformer removes, and assert both the primary size change and retained sponsor ownership.
source: gpt-6.1-sol (phase2-reviewer: rust-quality)
|
Your move: thepastaclaw requested changes on this head; dismiss the review or push a fix; thepastaclaw left review threads unresolved; resolve them. |
Basic explanation
What this does: Platform charges a storage fee when data is stored and gives part of it back (a "refund") when the data is deleted or shrinks. Gas sponsorship (#4826) lets a contract owner pay those fees for users of their app. Until now the refund always went to the document's owner, even when the contract owner had paid. With this change, the refund goes to whoever paid for the storage.
Value: A user could create a large document with the app paying, delete it, and keep the app's storage fee. Each sponsorship token the app handed out could be turned into withdrawable credits. That no longer works. Apps that sponsor storage also get their refunds back when sponsored documents are deleted.
Risks: Low to medium. It changes which identity is credited with refunds at protocol version 14, which is not on mainnet yet. Fees are unchanged: the estimate reads no owner, and an owner takes 32 bytes whoever it is. One part of the existing update path now reads the stored document before writing, with the same metered operations in the same order. The rules lean on GroveDB's flag merge, where each stored element has one owner, so the outcome depends on whether a write changes an element's size (described below).
Issue being fixed or feature implemented
Storage refunds follow the owner recorded in each stored element's storage flags. Sponsored batches recorded the document's owner, so refunds of storage the sponsor paid for went to the document's owner.
What was done?
Sponsored writes name the sponsor. Once fee validation decides the sponsor pays,
execute_eventv1 sets the owner in the storage flags of the batch's document writes to the sponsor (record_gas_sponsor_as_storage_owner). Fee validation's estimate does not need it: it prices without reading state.Unsponsored updates leave a sponsor-held document with the sponsor. GroveDB hands an element whose size an update changes to the owner the update names. Document update v1 (protocol version 14 only) now reads the stored document first. When its flags name the contract owner, someone else owns the document, and the type's token costs offer sponsorship (
storage_held_by_gas_sponsor), the stored document it rewrites keeps naming the contract owner, a transfer included. New index entries the update adds still name whoever pays for them.Contested documents. Contested document insert v1 names whoever the document's flags name on the contest's end date entries, so a sponsored contender's entries refund the sponsor when a second contender moves the end date (they named the contender before).
Moderator restore is unchanged. A restore is paid for by the moderator who signs it, and the deletion already settled any sponsor (their storage was forfeited, or refunded to them), so the restore keeps naming the document's owner. Only its comment and the book changed.
Docs. The fees overview, token cost, deletion, moderator abilities and contract moderation chapters describe the rules. They also cover GroveDB's limits: a same-size write keeps the old owner, and so does a shrink in a later epoch of an element holding one epoch's bytes. A type with a
ttlrefunds nobody. They also restore the advice that a type offering sponsorship should bound its documents' size, since the sponsor still pays the storage fee up front.Points for review
In-place changes to shipped generations
None.
execute_eventv1,validate_fees_of_eventv1,update_document_for_contract_operationsv1 andadd_contested_document_for_contract_operationsv1 are selected only by protocol version 14, which is not live on mainnet. Item 11 of the v14 notes is extended.How Has This Been Tested?
batch/tests/document/gas_sponsorship.rscheck exact balances, the refund to each identity, and that credits are conserved:cargo test -p drive-abci --lib state_transitions::batch: 799 passed. Contested (64) and moderation (170) drive-abci tests pass.cargo test -p drive --lib drive::document: 266 passed.cargo clippy -p drive -p drive-abci --lib --testsandcargo fmt --checkare clean.Breaking Changes
Consensus change at protocol version 14 (not yet on mainnet): refunds of storage a gas sponsor paid for go to the sponsor, unsponsored updates keep sponsor-held documents with the sponsor, and contested end date entries follow the document's flags.
Checklist:
structure.rs, regeneratedgrovedb-structure.json, and checked the structure viewer link posted on this pull requestFor repository code-owners and collaborators only
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