fix(sdk): fetch and persist managed identity credit balances - #4799
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Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe PR adds managed identity balance refresh. The wallet fetches and persists Platform balance metadata, tracks proof freshness, and exposes the operation through Rust FFI and the Swift SDK. SwiftData stores identity balance freshness metadata. ChangesManaged identity balance refresh
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~60 minutes Change: Bug fix · Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant ManagedPlatformWallet
participant platform_wallet_refresh_identity_balance
participant IdentityWallet
participant IdentityBalance
participant BalancePersister
ManagedPlatformWallet->>platform_wallet_refresh_identity_balance: provide identity ID
platform_wallet_refresh_identity_balance->>IdentityWallet: refresh_identity_balance
IdentityWallet->>IdentityBalance: fetch balance metadata
IdentityBalance-->>IdentityWallet: balance and ResponseMetadata
IdentityWallet->>BalancePersister: persist snapshot
BalancePersister-->>IdentityWallet: persistence result
IdentityWallet-->>platform_wallet_refresh_identity_balance: refreshed balance
platform_wallet_refresh_identity_balance-->>ManagedPlatformWallet: UInt64 balance
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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Approve — no blockers. The shape is right: a dedicated balance query with no keys or state transitions, network failure leaving the previous balance untouched, and a post-await re-lookup so a removed identity is never recreated.
Verified while reading:
BlockTime::new(height, core_height, timestamp)argument order matches the metadata fields;IdentityChangeSet::merge/apply_identity_entrygate balance onentry.revision >= existing.revision, so a balance-only snapshot (revision unchanged) is not dropped;- the Swift wrapper's
Task.detached+ blocking-FFI shape matches the 43 existing uses inManagedPlatformWallet.swift,Identifieristypealias Identifier = Data, and thecount == 32guard makesbaseAddress!safe; - cbindgen generates the header at build time, so there is no checked-in
.hor symbol allowlist to update; platform_wallet_refresh_identity_balancecallsblock_on_workerinside thewith_itemclosure, i.e. it holds the registry read guard across the round-trip — I checked this deliberately and it is the crate's established pattern (44 existing call sites do the same,dashpay.rs:993among them), so it is not something this PR introduces. Worth a separate look some day, not here.
One major point inline. Everything below is a non-blocking recommendation:
1. flush() is called unconditionally and ignores store_commits_inline() — balance.rs:66-68. On the production iOS backend FFIPersister::store_commits_inline() returns true (rs-platform-wallet-ffi/src/persistence.rs:1355; the end callback commits or rolls back the host transaction before store returns, and flush is only a later general-purpose notification). So a failing on_flush host callback makes refresh_identity_balance return Err(Persistence) for a refresh whose balance was durably committed — and the iOS caller (dashwallet-ios#1135) reports a failure while memory and SQLite already hold the new value. The new test should_report_persistence_failure_instead_of_claiming_a_durable_refresh encodes the opposite assumption. Separately, flush() also runs on the skip branch, where this call staged nothing; on a deferred-mode backend that drains other in-flight operations' buffered changesets as collateral of what is effectively a read-only profile open.
2. IdentityNotFound is used for three different conditions — balance.rs:28-29, :35, :46. "This wallet does not manage that identity" and "Platform returned proof-of-absence" both surface as the same error and the same FFI code 7. Given the known lagging-evonode behaviour right after IdentityCreate — a consensus IdentityNotFound seconds after registration, which is exactly what #4797 exists to work around — a transient absence is indistinguishable from a permanently unmanaged identity. That is the wrong signal for the post-DPNS refresh this PR serves; a distinct error for the fetch-returned-none case would let the host retry.
3. The ownership pre-check does not check ownership — balance.rs:28. IdentityManager::identity() (state/manager/accessors.rs:83) resolves across both wallet_identities[wallet_id] and out_of_wallet_identities, so an observed, non-owned identity passes and then gets refreshed with its snapshot stored under self.wallet_id. wallet_managed_identities(&self.wallet_id) is the accessor that expresses what the doc comment claims. The post-await re-lookup at :45 has the same property, so the pre-check currently costs a manager read-lock without adding its guarantee.
4. Please run the new test module before merge. The PR states the six Rust tests were never executed. I checked every signature they depend on (add_identity, apply_identity_entry, PersistenceError::backend, PlatformWalletManager::new, create_wallet_from_seed_bytes, IdentityEntry fields) and they all exist and match; the one thing I could not settle statically is whether the mock SDK populates ResponseMetadata for fetch_with_metadata.
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Final validation — Phase 1 + Phase 2
The new refresh path uses the SDK balance query, rechecks managed identity presence after the network await, and flushes persistence before returning success. Three non-blocking correctness gaps remain: stale queries can overwrite transaction-derived balances, failed stores can be skipped on retry, and mobile restoration loses the freshness watermark. These affect SDK-managed state rather than consensus; the exact review range passes git diff --check, and runtime tests were not rerun during verification.
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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: architecture-layering); reviewer 3: muse-spark-1.3-contributor (agent: phase1-reviewer, role: ffi-engineer); reviewer 4: muse-spark-1.3-contributor (agent: phase1-reviewer, role: rust-quality); reviewer 5: gpt-6-astra (agent: phase2-reviewer, role: general); reviewer 6: gpt-6-astra (agent: phase2-reviewer, role: architecture-layering); reviewer 7: gpt-6-astra (agent: phase2-reviewer, role: ffi-engineer); reviewer 8: gpt-6-astra (agent: phase2-reviewer, role: rust-quality); final verifier: gpt-6-astra (agent: astra-verifier, role: final-verifier)
- Triage:
normalbygpt-6-astra(effort low) — The diff adds a Rust/C/Swift balance-refresh path with asynchronous ownership checks, stale-response handling and persistence guarantees, but does not change funds movement, signing, consensus, cryptography or storage schemas. - Phase 1 reviewers:
muse-spark-1.3-contributor— general (completed, effort xhigh); agentphase1-reviewer,muse-spark-1.3-contributor— architecture-layering (completed, effort xhigh); agentphase1-reviewer,muse-spark-1.3-contributor— ffi-engineer (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 11% left, 5h 100% left),glm-5.3-flash(not used above high effort; tier asks max) - Fresh verifier:
gpt-6-astra— final-verifier; agentastra-verifier - Phase 2 reviewers:
gpt-6-astra— general (completed, effort high); agentphase2-reviewer,gpt-6-astra— architecture-layering (completed, effort high); agentphase2-reviewer,gpt-6-astra— ffi-engineer (completed, effort high); agentphase2-reviewer,gpt-6-astra— rust-quality (completed, effort high); agentphase2-reviewer
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These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `packages/rs-platform-wallet/src/wallet/identity/network/balance.rs`:
- [SUGGESTION] packages/rs-platform-wallet/src/wallet/identity/network/balance.rs:48-54: Protect transaction-derived balances from stale refresh responses
The watermark orders refresh responses but does not account for successful wallet transactions. For example, after a refresh records height H, transfer.rs writes and stores the confirmed sender balance without advancing last_updated_balance_block_time. A subsequent query from before that transfer, at height H or above, passes this guard and persists the older balance over the confirmed result. Withdrawal, address-funded top-up, and other local balance writers have the same mismatch. Track the provenance of transaction-derived balances alongside refresh-derived balances, using execution heights or an ordering mechanism that rejects pre-mutation responses. Changing >= to > only closes the equal-height case; a response above H but below the transaction's execution height still passes. Add a regression combining a confirmed local balance mutation with an older refresh response.
- [SUGGESTION] packages/rs-platform-wallet/src/wallet/identity/network/balance.rs:53-61: Do not leave an unpersisted balance marked as successfully updated
The balance and watermark are changed before the fallible store call. FFIPersister can reject a changeset before any write—for example, when its changeset-begin callback fails—and WalletPersister does not retain a fallback copy. After such a failure at height H, a retry served at H-1 skips store, successfully flushes without that snapshot, and returns the unpersisted balance from H. Restarting then restores the previous balance despite the successful retry. Stage the candidate update until store succeeds, or retain a pending snapshot that must be stored even when the next response is stale. Add a store-failure-then-older-response regression; the existing failure test only covers a flush failure after successful enqueueing.
- [SUGGESTION] packages/rs-platform-wallet/src/wallet/identity/network/balance.rs:54-60: Carry the balance watermark through mobile persistence and restore
The Rust snapshot contains last_updated_balance_block_time, but the mobile persistence path does not preserve it. IdentityEntryFFI explicitly omits block times, IdentityRestoreEntryFFI has no corresponding field, and build_wallet_identity_bucket reconstructs ManagedIdentity with the watermark left as None. Consequently, a successful refresh at height H followed by an app restart preserves the balance but loses the height needed to reject a response below H; the next refresh can overwrite and persist that older value. Preserve the watermark through the mobile persistence and restore representations, using an ABI-compatible extension where necessary. Test the actual adapter round-trip followed by an older response: the new rehydration test directly replays IdentityEntry and bypasses the boundary that drops the field.
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Inline comments:
In `@packages/rs-platform-wallet/src/wallet/identity/network/balance.rs`:
- Line 61: Preserve the typed store failure in the balance persistence flow
instead of converting it with e.to_string(). Add a WalletPersister helper that
maps its underlying persistence error through
PlatformWalletError::from_store_failure, then use that helper in the store
call’s map_err; do not pass &self.persister directly because WalletPersister
does not implement PlatformWalletPersistence.
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packages/rs-platform-wallet-ffi/src/wallet.rspackages/rs-platform-wallet/src/wallet/identity/network/balance.rspackages/rs-platform-wallet/src/wallet/identity/network/mod.rspackages/swift-sdk/Sources/SwiftDashSDK/PlatformWallet/ManagedPlatformWallet.swift
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## v4.2-dev #4799 +/- ##
============================================
- Coverage 84.25% 83.06% -1.19%
============================================
Files 3122 3125 +3
Lines 419979 426543 +6564
============================================
+ Hits 353840 354299 +459
- Misses 66139 72244 +6105
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Approve — re-reviewed at 8cea729. No blockers.
My point from the last round is addressed properly: the watermark is now advanced by the transaction paths too, through set_confirmed_balance(balance, proof_height) at all six call sites, so a chain read served by a lagging node can no longer clobber a freshly applied local balance. The additive *WithHeight traits keep the old signatures as delegating wrappers, and reconcile_asset_lock_submit_result<T> / submit_with_cl_height_retry being generic means the u64 → (u64, u64) change propagates without caller breakage.
Also checked and sound at this head: the PersistenceCallbacksExtension slot ordering, struct_size gating and offset assertions are append-only, so old hosts keep every earlier slot; the sidecar persist loop sits inside the begin/end bracket, so the metadata row commits or rolls back atomically with the identity row, and removals write a NULL stamp; every IdentityEntry comes from from_managed, so no partial changeset can wipe a watermark with a spurious None; and the DashSchemaV5 freeze at ba01d4cd matches v5ModelTypes (35 models), with V6 adding only the new entity — testV6AddsOnlyTheIndependentBalanceMetadataEntity pins that.
Two major points inline. Everything below is a non-blocking recommendation:
1. The balance-block-time setter is now load-bearing but still unvalidated — packages/rs-platform-wallet-ffi/src/managed_identity.rs:121. managed_identity_set_last_updated_balance_block_time (Swift setLastUpdatedBalanceBlockTime) used to be inert metadata; with this PR it gates every balance update. A host that stamps a height above the current platform tip permanently suppresses both set_confirmed_balance and persist_refreshed_balance until the chain catches up — the balance simply stops updating, with no error anywhere. Worth validating the input, or deprecating the setter now that it decides whether balances apply.
2. store() succeeding and flush() failing leaves memory and storage disagreeing — packages/rs-platform-wallet/src/wallet/identity/network/balance.rs:91. On a buffered backend the Err return skips *managed = candidate, so the queued changeset (new balance and new watermark) is committed by the next round's flush while memory keeps the old balance and a None watermark. The wallet shows the stale value until relaunch, then jumps. should_report_persistence_failure_instead_of_claiming_a_durable_refresh pins this deliberately, so I assume it is intentional — but the divergence is real and worth a comment at least.
3. A None from IdentityBalance::fetch still conflates two states — balance.rs:40 (carried over from the last round, not re-litigating). ERROR_CODE_REGISTRY.md and the Swift errorIdentityBalanceUnavailable doc both tell hosts that retrying is safe and that this "must not trigger registration or funding". So a wallet whose local state records an identity whose IdentityCreate never actually landed — the consensus IdentityNotFound shape from ticket 32309 — retries forever instead of surfacing the real state.
4. Kotlin is missing the arm for code 58 — packages/kotlin-sdk/…/errors/DashSdkError.kt:803. It falls into else → PlatformWallet.Generic(58, …), so Android loses the "retry is safe, do not fund or register" discrimination the registry row promises. Codes 55–57 did get typed arms; not a compile break, just an inconsistency.
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only still-valid issues, skip the rest with a brief reason, keep changes
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Inline comments:
In `@packages/rs-platform-wallet/src/wallet/identity/network/balance.rs`:
- Around line 91-94: Update the persistence flow around self.persister.flush()
so a failed height-10 flush retains its outstanding persistence obligation and
prevents a later height-9 snapshot from being accepted ahead of it; retry the
pending newer snapshot before older snapshots or coalesce buffered identity
snapshots by watermark. Add a regression covering failed height-10 flush,
height-9 retry, subsequent flush, and reload to verify durable state remains
correctly ordered.
In
`@packages/rs-platform-wallet/src/wallet/identity/state/managed_identity/sync.rs`:
- Around line 17-20: Update the managed identity balance synchronization flow
around set_balance and the persistence store operation to retain a pending
confirmed-balance snapshot whenever durable storage fails. Retry that snapshot
before watermark checks suppress writes at the same or lower height, and clear
the pending obligation only after persistence succeeds, preserving the existing
balance and watermark updates.
- Line 15: Update the transaction-result ordering logic around the height
comparison to avoid treating equal block heights as newer results. Serialize
balance-changing operations per identity or use a monotonic ordering value such
as the identity nonce, ensuring delayed earlier results cannot overwrite the
latest balance.
In
`@packages/swift-sdk/Sources/SwiftDashSDK/PlatformWallet/PlatformWalletPersistenceHandler.swift`:
- Around line 6350-6357: Update deleteWalletData to remove the
network-resolution guard around PersistentIdentityBalanceMetadata cleanup and
fetch metadata using only walletId, matching the sibling purge operations;
delete every fetched row even when walletRow and self.network are nil.
- Around line 4922-4959: Update both network-resolution sites in
balanceMetadataDescriptor and persistIdentityBalanceBlockTime to fall back to
.testnet when self.network and walletNetwork(walletId:) are unavailable. Remove
the throwing guards for this resolution while preserving the existing metadata
fetch and insertion behavior.
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packages/rs-platform-wallet-ffi/ERROR_CODE_REGISTRY.mdpackages/rs-platform-wallet-ffi/src/error.rspackages/rs-platform-wallet-ffi/src/manager.rspackages/rs-platform-wallet-ffi/src/persistence.rspackages/rs-platform-wallet/src/error.rspackages/rs-platform-wallet/src/wallet/identity/network/balance.rspackages/rs-platform-wallet/src/wallet/identity/network/registration.rspackages/rs-platform-wallet/src/wallet/identity/network/top_up_from_addresses.rspackages/rs-platform-wallet/src/wallet/identity/network/transfer.rspackages/rs-platform-wallet/src/wallet/identity/network/transfer_to_addresses.rspackages/rs-platform-wallet/src/wallet/identity/network/withdrawal.rspackages/rs-platform-wallet/src/wallet/identity/state/managed_identity/sync.rspackages/rs-platform-wallet/src/wallet/persister.rspackages/rs-platform-wallet/src/wallet/platform_wallet.rspackages/rs-platform-wallet/src/wallet/shielded/operations.rspackages/rs-sdk/src/platform/transition/top_up_identity.rspackages/rs-sdk/src/platform/transition/transfer.rspackages/rs-sdk/src/platform/transition/withdraw_from_identity.rspackages/swift-sdk/Sources/SwiftDashSDK/Persistence/DashModelContainer.swiftpackages/swift-sdk/Sources/SwiftDashSDK/Persistence/Models/PersistentIdentityBalanceMetadata.swiftpackages/swift-sdk/Sources/SwiftDashSDK/PlatformWallet/PlatformWalletPersistenceHandler.swiftpackages/swift-sdk/Sources/SwiftDashSDK/PlatformWallet/PlatformWalletResult.swiftpackages/swift-sdk/SwiftTests/SwiftDashSDKTests/DashLegacySchemaMigrationTests.swiftpackages/swift-sdk/SwiftTests/SwiftDashSDKTests/DashModelMigrationTests.swiftpackages/swift-sdk/SwiftTests/SwiftDashSDKTests/IdentityBalanceMetadataPersistenceTests.swiftpackages/swift-sdk/SwiftTests/SwiftDashSDKTests/IdentityBalanceMetadataSchemaTests.swiftpackages/swift-sdk/schema-models.json
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Review — fix(sdk): fetch and persist managed identity credit balances
Reviewed the full diff (30 files, +1548/−79) against the surrounding sources. The core of the change is sound: refresh_identity_balance re-checks ownership after the network await, stores before it publishes, and gates the flush on store_commits_inline(); the FFI sidecar is appended last in PersistenceCallbacksExtension and size-gated, so the ABI stays compatible; IdentityEntry is always a full from_managed snapshot, so the "null stamp deletes the row" sidecar cannot wipe a live watermark.
Two inline comments below, both about the new monotonic gate — together they let a proven post-transaction balance be dropped silently while the FFI still reports success. Please address those before merge.
Non-blocking recommendations
These do not block the merge:
-
sync.rs:20—BlockTime::new(height, 0, 0)zeroes the two columns the new entity exists to persist.refresh_identity_balancewrites a realcore_chain_locked_height/time_ms(network/balance.rs), but the six transaction call sites are the dominant writer and clobber both with zeros, which the new sidecar then writes to disk.ManagedIdentity::needs_balance_updatecomparestimestamp, so it degrades to "always stale", andgetLastUpdatedBalanceBlockTime()hands the host 1970-01-01. Consider preserving the previouscore_height/timestampwhen the transaction API cannot supply them. -
rs-platform-wallet-ffi/src/persistence.rs:3196— restore skipsout_of_wallet_identities. The store side writes a stamp for every entry inid_cs.identities, andIdentityManager::managed_identity_mutreaches both buckets — so the shielded top-up path atplatform_wallet.rs:1493can stamp an observed identity. That row is written to SwiftData and never read back: after a restart the identity restores withlast_updated_balance_block_time = None(gate re-opens) while the stale row lingers. -
PlatformWalletPersistenceHandler.swift:6350— the network gate on the metadata purge is leaky.deleteWalletDatapurges the new rows onlyif let metadataNetwork = self.network ?? walletNetwork, but the function is documented to run on retries "where the wallet row is already absent". Withnetwork == niland the wallet row gone,PersistentIdentityBalanceMetadatarows survive a user-initiated wipe. Every other raw-walletIdtable in the same function purges onwalletIdalone, and the comment further down stateswalletIdis already network-scoped. -
managed_identity.rs:121— the public setter now writes a correctness-critical field with no validation.ManagedIdentity.setLastUpdatedBalanceBlockTime(_:)is exposed to hosts; a value not on the Platform height scale (a Core height, epoch millis) permanently wedges balance updates for that identity — refresh (>) and every transaction (>=) reject silently, with no log and no clearing path.dashwallet-iosdoes not call it today, so this is latent, but the setter is worth deprecating or guarding now that the field carries a contract.
Checked and clean
FFI ABI (new slots last, struct_size from MemoryLayout, extension version correctly left at 1, size/offset asserts added) · PersistenceExtensionCallbacks is Copy, so the tracked_masternodes_callbacks: extensions move followed by two further field reads compiles as intended · Identifier::as_bytes() returns &[u8; 32], so the callback pointers in the store loop are not dangling, and the Option<BlockTime> stamp outlives its map_or pointer · refresh_identity_balance's with_item + block_on_worker shape matches the established pattern in dpns.rs / dashpay.rs · the merge/apply revision gate is >=, so a refresh that changes balance without bumping revision is not dropped on replay · cfg(feature = "core_key_wallet") lines up between the new TopUpIdentityWithHeight trait and its impl · V2 schema registration is consistent (DashSchemaV2.models = live modelTypes), schema-models.json updated, FFI headers untracked so no stale-header break · the Swift callbacks returning -1 rather than PlatformWalletPersistRC.transient matches the documented handler-wide deviation.
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Addressed the additional recommendations in the review summary in a219967:
The inline findings now have individual responses. Final validation: 1372 wallet tests, 426 FFI tests (one pre-existing ignored test), 9 Swift persistence tests, and Clippy with warnings denied all passed. Full response metadata replaces zero Core heights/timestamps; failed balance writes retain their retry obligation; stale/equal-height snapshots cannot replace newer state or leak a rejected balance through the managed return value. |
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Review round 2 — head a219967773
Both round-1 blockers are closed
The watermark / proof-height mismatch. set_confirmed_balance(balance, height) is gone. Both sides now carry the full ResponseMetadata (BlockTime::from(metadata)), and balance_snapshot_is_newer compares two committed, quorum-verified platform heights on the same chain. The ordering argument holds: a balance query proves state at the responding node's committed tip H, a state transition broadcast after that query can only execute in a block > H, and wait_for_affected_state_with_metadata proves the balance at its own metadata height — so balance and height are always a matched pair. The reverse case (a lagging node's query arriving after a transaction) is now correctly rejected rather than accepted, and the rejection is logged.
The unconditional store + Ok(new_balance). Closed at all six sites. persist_confirmed_balance only sets pending_balance_snapshot when the gate passes, and retry_pending_balance early-returns when nothing is pending, so a rejected response writes nothing. registration.rs, top_up_from_addresses.rs, transfer_to_addresses.rs and platform_wallet.rs:1495/2106 now return the retained balance; transfer.rs and withdrawal.rs discard it correctly since both return Ok(()).
Of the four non-blocking items: the BlockTime::new(h,0,0) zeroing is fixed; the FFI store/restore asymmetry is fixed by the wallet_id filter on the store side; the unvalidated setter is documented and proven inert on detached handles by a new test — acceptable. The deleteWalletData purge is fixed but over-corrected, and that is the inline comment below — the fault is mine, my round-1 note asserted a premise this file contradicts. The new storage-explorer commit reads clean: read-only views, #Unique backs the predicate, the model is in modelTypes, and the V1→V2 stage stays lightweight.
Non-blocking recommendations
These do not block the merge:
-
.github/workflows/tests-rs-workspace.yml:39—shell: bash -e "{0}"silently dropspipefailfor every step in the job. It replaces GitHub's default templatebash --noprofile --norc -eo pipefail {0}, and the job does have real pipelines: line 148curl -fsSL … | sudo tee /etc/apt/sources.list.d/github-cli.listand line 157curl … | sh -s -- -y --no-modify-path --default-toolchain none. Both now report success when thecurlfails, installing an empty source list or no toolchain and failing later with an unrelated error. The space-quoting fix is right; it just needs to keep the flags:shell: bash --noprofile --norc -eo pipefail "{0}". -
rs-platform-wallet/src/wallet/identity/state/manager/apply.rs:55—apply_identity_entrydoes not maintain the new invariant. It assignsexisting.last_updated_balance_block_time = entry.last_updated_balance_block_timeunconditionally while gatingbalance/revisiononentry.revision >= existing.identity.revision(), and never touchespending_balance_snapshot. Two consequences now that the block time is a correctness gate: (a) when the revision gate blocks, the identity keeps the old balance but adopts the entry's watermark, so a later correct refresh at that height is dropped as duplicate and the stale balance sticks; (b) a pending snapshot that survives the apply makesbalance_snapshot_for_persistencewrite the old pending balance back over the just-applied one on the next unrelated scalar write.apply_changesethas no non-test callers today, so this is latent — but the "balance and watermark are always a matched pair" invariant should hold here too. -
load()now makes one FFI hop plus oneserialQueue.syncSwiftData fetch per identity on every restore. Indexed by#Unique, so bounded, but it is N round trips on startup. Worth a single batched fetch if identity counts grow.
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Addressed the actionable round-2 findings in 0afcf2e:
Validation: 1375 wallet tests passed, 11 Swift metadata-persistence tests passed, and Clippy (library + tests, warnings as errors), Rust formatting and whitespace checks passed. No native simulator SDK rebuild or live wallet transaction was needed for these changes. On the optional batching recommendation: I left the indexed per-identity metadata reads in place. The additive callback receives only |
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Review round 3 — head 0afcf2e67
Approve. All three round-2 items are closed, and the inline one is closed on the right premise rather than on mine.
Round-2 items
Recommendation 1 — shell: bash -e "{0}" dropping pipefail job-wide. Now bash --noprofile --norc -eo pipefail "{0}": the space-tolerant quoting is kept and the two curl … | tee / curl … | sh installs in that job can fail loudly again.
Recommendation 2 — apply_identity_entry not maintaining the balance/watermark pair. Fixed on both sides of the same invariant. restore_persisted_balance sets balance, watermark and pending_balance_snapshot = None together, inside the revision gate; when the gate blocks, the old watermark and the pending write both survive, so a rejected replay can neither poison a later proven read nor let a superseded pending balance ride out on the next unrelated scalar write. IdentityChangeSet::merge moved last_updated_balance_block_time under the same entry.revision >= existing.revision gate. Worth noting the gate is >= and not >, which is what makes it correct here: a balance-only refresh does not bump the identity revision, so the equal-revision case must stay accepted. The two new suites cover the rejected replay, the accepted replay across None / older / newer watermarks, and the retry that follows.
Inline — the deleteWalletData purge I asked to widen. Correctly narrowed again, and the premise is now settled: PersistentWallet carries #Unique<PersistentWallet>([\.walletId]) with a network byte folded into the digest, so walletId really is globally unique and the (walletId, networkRaw) comment I quoted was the stale leftover. Correcting that comment rather than the schema is the right call. The purge takes self.network ?? walletRow?.network, and with neither available it removes only sidecars whose network no remaining wallet row claims — so a retry after the wallet row is gone cannot reach across networks.
Non-blocking
- The legacy
network: nilwrite path can label a sidecar with a network the wallet never had. Its testnet fallback writesnetworkRaw = testnetfor a wallet that may be mainnet; a later network-scoped delete then skips that row, and only anetwork: nilretry purges it as unclaimed. Benign — the row holds heights and a timestamp, no balance and no key material, and a stale watermark cannot reject a newer refresh because platform heights only grow — but a one-line comment at the fallback would save the next reader the trace. load()still makes one FFI hop plus oneserialQueue.syncfetch per identity. Bounded by#Unique, but it is N round trips on startup; a single batched fetch if identity counts grow.
CI
Rust workspace tests / Tests was still in progress when I sent this (the scoped Rust wallet tests job is correctly skipped — this PR also touches non-wallet Rust, so the full workspace job supersedes it). The approval is on the code; the merge still needs that job green.
🤖 Reviewed with Claude Code
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Added the legacy fallback note in 07e6950: when the network cannot be resolved, the sidecar may be labelled testnet, and a scoped deletion may retain it until an unscoped orphan purge. This commit changes comments only; the executable Swift and schema are unchanged. The optional batching optimization remains deferred for the snapshot-scoping reasons explained in the previous reply. |
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Heads-up on where this lands: once 4.2 activates (protocol version 14) the post-registration balance refresh this PR adds is no longer needed, because the write itself gives the balance back. #4887 makes a document batch's The new proof shape is selected by the protocol version's tables, so before the activation nodes still answer with the document-only proof and the balance comes back as After the activation we need to clean it up: take the balance from the wait result, drop the automatic |
4 participants
Issue being fixed or feature implemented
After DPNS registration, the wallet retains the pre-document identity balance. This adds the read-only refresh consumed by dashpay/dashwallet-ios#1135. Rebased onto
v4.2-devat1d5e629c8b, including the schema-release approach from #4818 and the merged #4797 retry fixes.What was done?
How Has This Been Tested?
Latest review-fix validation (
0afcf2e67b, 2026-09-21):pipefailand supports script paths containing spaces; both success and failure cases were checked.Previous review-fix validation:
Earlier validation of unchanged schema/ABI and the consuming app:
Earlier validation of the original refresh API built the simulator framework and consuming iOS app, passed five XCTest cases, and confirmed a real testnet balance change from 2,818,262,560 to 2,743,797,100 credits persisted across app restart. No registration, top-up or wallet reset was performed. On 2026-09-21 the clean release-ios simulator framework and full consuming app build were repeated successfully; nine selected XCTest cases passed on the simulator. The app compatibility adjustment is in iOS
c59edd12d. On an isolated simulator copy with a reconstructed V2 cache, normal startup recovered the existing testnet identity and 2,743,797,100 credits, matching the live explorer. The explicit My Profile refresh and restart verification remain pending normal PIN unlock; this does not validate migration from unsupported beta V4.Breaking Changes
No protocol change. Existing Rust operation signatures and legacy FFI identity-row layouts remain compatible. The balance metadata joins the unpublished V2 graph under #4818; no additional schema version is created. Intermediate beta layouts are outside the supported release history. SDK and companion app changes should ship together.
Checklist:
For repository code-owners and collaborators only
Summary by CodeRabbit
New Features
Bug Fixes
PR Hygiene ·
07e6950/skip-botsproceeds without the ones not yet reported/self-reviewedonce the bots are done.github/workflows/tests-rs-workspace.yml) — QuantumExplorer or shumkovrs-platform-wallet-ffi— you own itrs-platform-wallet— you own itrust-sdk(packages/rs-sdk/src/platform/transition/top_up_identity.rs,packages/rs-sdk/src/platform/transition/top_up_identity_from_addresses.rs,packages/rs-sdk/src/platform/transition/transfer.rsand 2 more) — lklimek or shumkovswift-sdk— you own itWhen every box is checked the
PR Hygienecheck passes and this can merge.