feat(kotlin-sdk): bind the ordered wallet bring-up (startWalletSubsystems) over JNI - #4658
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…tems) over JNI Android could not call platform_wallet_manager_start_wallet_subsystems at all — the C export and the Swift binding existed, but no JNI export and no Kotlin surface — so every Android consumer (dash-wallet, the example app) starts the L1 scan before the DIP-15 receival accounts exist and depends on the after-the-fact rescan, whose in-session rewind loses a race against the filter pipeline's forward-only synced-height advance (see MO-1012, 2026-09-03 instrumented restore). The JNI wrapper returns the outcome as a fixed 57-byte big-endian blob; WalletStartupOutcome.decode is the Kotlin half of that contract and WalletStartupTest pins it, along with the status-helper semantics (discoveryWorthRetrying / identityIsSettled) mirrored from the Swift binding. PlatformWalletManager.startWalletSubsystems follows the drain's per-call key-material contract: resolver and signer built for the call, closed when it returns. Call it once per wallet load, immediately before startSpv. (cherry picked from commit 783b58a)
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Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughAdds ordered wallet subsystem startup to the Kotlin SDK. The API validates inputs, creates signing resources, calls the Rust JNI bridge, and decodes a fixed 57-byte startup outcome. Tests cover status mapping, field decoding, identity handling, and invalid blobs. ChangesOrdered wallet startup
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant Caller
participant PlatformWalletManager
participant WalletManagerNative
participant JNI
participant RustWalletManager
Caller->>PlatformWalletManager: startWalletSubsystems(walletId, budgetSecs, gapLimit)
PlatformWalletManager->>PlatformWalletManager: validate inputs and create resolver/signer
PlatformWalletManager->>WalletManagerNative: startWalletSubsystems(handles, walletId, budgetSecs, gapLimit)
WalletManagerNative->>JNI: invoke native export
JNI->>RustWalletManager: platform_wallet_manager_start_wallet_subsystems
RustWalletManager-->>JNI: return WalletStartupOutcomeFFI
JNI-->>WalletManagerNative: return 57-byte outcome blob
WalletManagerNative-->>PlatformWalletManager: return outcome blob
PlatformWalletManager-->>Caller: return WalletStartupOutcome
Merge Risk: ⚪ Minimal · up to The available information identifies no actionable merge risk. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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✅ Final review complete — no blockers (commit 3a32c35) · triage: normal |
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Final validation — Phase 2 only (queue backlog)
The JNI bridge and Kotlin outcome decoding are consistent, and the native startup failure path is handled as intended. One resource-lifecycle defect remains: if signer construction fails after the resolver is created, the resolver's native handle is never closed, so repeated wallet-start attempts can leak handles.
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Review provenance
Source: reviewer 1: gpt-6-astra (agent: phase2-reviewer, role: general); reviewer 2: gpt-6-astra (agent: phase2-reviewer, role: ffi-engineer); reviewer 3: gpt-6-astra (agent: phase2-reviewer, role: rust-quality); reviewer 4: gpt-6-astra (agent: phase2-reviewer, role: security-auditor); final verifier: gpt-6-astra (agent: astra-verifier, role: final-verifier)
- Triage:
normalbygpt-6-astra(effort low) — This is a substantial but well-contained Kotlin/JNI API addition coordinating wallet startup, native error/status mapping, and key-related signer resolution, yet it does not itself change consensus, funds movement, cryptographic primitives, or storage migrations. - Phase 1 reviewers: not run (skipped for throughput: 16 PRs queued, above the 10 limit)
- Fresh verifier:
gpt-6-astra— final-verifier; agentastra-verifier - Phase 2 reviewers:
gpt-6-astra— general (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,gpt-6-astra— security-auditor (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/kotlin-sdk/sdk/src/main/kotlin/org/dashfoundation/dashsdk/wallet/PlatformWalletManager.kt`:
- [SUGGESTION] packages/kotlin-sdk/sdk/src/main/kotlin/org/dashfoundation/dashsdk/wallet/PlatformWalletManager.kt:2390-2392: Close the resolver when signer construction fails
`startupResolver` is constructed before `KeystoreSigner`, but the `try/finally` begins only after both constructors return. If `KeystoreSigner(...)` throws during native signer creation or dependent keystore/database initialization, control exits without calling `startupResolver.close()`, leaving its native handle allocated. Because this method can be retried during wallet loading, repeated signer-construction failures can accumulate leaked resolver handles. Place signer construction inside a nested cleanup scope or use nullable locals so every successfully-created resource is closed.
`KeystoreSigner`'s constructor can throw (Keystore unlock, DAO access), and the single try/finally began only after BOTH constructors returned — so a throw there leaked the resolver's native handle. Each handle now has its own guard, closed in reverse construction order. Review finding on dashpay#4658.
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Inline comments:
In
`@packages/kotlin-sdk/sdk/src/main/kotlin/org/dashfoundation/dashsdk/wallet/WalletStartup.kt`:
- Around line 8-10: Update both KDocs for the affected wallet startup types to
cite PlatformWalletManagerStartup.swift as the Swift source for the iOS-ported
behavior, preserving the existing ABI discriminant documentation.
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ℹ️ Review info
⚙️ Run configuration
Configuration used: Path: .coderabbit.yaml
Review profile: CHILL
Plan: Advanced
Run ID: a6cf1b5e-d2a5-4a24-9337-d6b617f5dc16
📒 Files selected for processing (5)
packages/kotlin-sdk/sdk/src/main/kotlin/org/dashfoundation/dashsdk/ffi/WalletManagerNative.ktpackages/kotlin-sdk/sdk/src/main/kotlin/org/dashfoundation/dashsdk/wallet/PlatformWalletManager.ktpackages/kotlin-sdk/sdk/src/main/kotlin/org/dashfoundation/dashsdk/wallet/WalletStartup.ktpackages/kotlin-sdk/sdk/src/test/kotlin/org/dashfoundation/dashsdk/wallet/WalletStartupTest.ktpackages/rs-unified-sdk-jni/src/wallet_manager.rs
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Final validation — Phase 1 + Phase 2
Verified the supplied findings and prior resolver-leak report against head 7cfc6e3. The nested cleanup guards fix the leak; the alleged Duration overflow is refuted by Rust 1.92 execution, and the unknown-status suggestion depends on hypothetical native/Kotlin version skew rather than current behavior. No actionable in-scope findings remain; git diff --check passed, but the full SDK suites were not rerun.
Review provenance
Source: reviewer 1: muse-spark-1.3-contributor (agent: phase1-reviewer, role: ffi-engineer); reviewer 2: muse-spark-1.3-contributor (agent: phase1-reviewer, role: rust-quality); reviewer 3: muse-spark-1.3-contributor (agent: phase1-reviewer, role: security-auditor); reviewer 4: gpt-6-astra (agent: phase2-reviewer, role: general); reviewer 5: gpt-6-astra (agent: phase2-reviewer, role: ffi-engineer); reviewer 6: gpt-6-astra (agent: phase2-reviewer, role: rust-quality); reviewer 7: gpt-6-astra (agent: phase2-reviewer, role: security-auditor); final verifier: gpt-6-astra (agent: astra-verifier, role: final-verifier)
- Triage:
normalbygpt-6-astra(effort low) — This is a substantial cross-language JNI/Kotlin orchestration change affecting wallet startup ordering and key-related signer resolution, but it does not itself alter funds movement, coin selection, cryptography, consensus, storage migrations, or other critical surfaces defined for the critical tier. - Phase 1 reviewers:
muse-spark-1.3-contributor— ffi-engineer (completed, effort xhigh); agentphase1-reviewer,muse-spark-1.3-contributor— rust-quality (completed, effort xhigh); agentphase1-reviewer,muse-spark-1.3-contributor— security-auditor (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(zai below 15% reserve: 5h 99% left, weekly 13% left) - Fresh verifier:
gpt-6-astra— final-verifier; agentastra-verifier - Phase 2 reviewers:
gpt-6-astra— general (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,gpt-6-astra— security-auditor (completed, effort high); agentphase2-reviewer
Both `WalletStartupStatus` and `WalletStartupOutcome` mirror Swift types; the Kotlin SDK convention is to name the Swift file a ported KDoc came from, as `Network.kt`, `Sdk.kt` and `IdentityUpdates.kt` already do. Review finding on dashpay#4658. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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Final validation — Phase 1 + Phase 2
The JNI wallet bring-up binding correctly validates inputs, preserves native handle ownership and cleanup, and uses a documented fixed-layout outcome ABI. One forward-compatibility inconsistency remains: Kotlin rejects unknown status discriminants even though the Swift binding conservatively maps them to PARTIAL_NO_IDENTITY, so an older Kotlin host paired with a newer native library can unexpectedly fail instead of continuing with a retryable result.
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Review provenance
Source: reviewer 1: muse-spark-1.3-contributor (agent: phase1-reviewer, role: ffi-engineer); reviewer 2: muse-spark-1.3-contributor (agent: phase1-reviewer, role: rust-quality); reviewer 3: muse-spark-1.3-contributor (agent: phase1-reviewer, role: security-auditor); reviewer 4: gpt-6-astra (agent: phase2-reviewer, role: general); reviewer 5: gpt-6-astra (agent: phase2-reviewer, role: ffi-engineer); reviewer 6: gpt-6-astra (agent: phase2-reviewer, role: rust-quality); reviewer 7: gpt-6-astra (agent: phase2-reviewer, role: security-auditor); final verifier: gpt-6-astra (agent: astra-verifier, role: final-verifier)
- Triage:
normalbygpt-6-astra(effort low) — This is a substantial but well-contained Kotlin/Rust JNI binding that orchestrates wallet startup, argument validation, native error/status mapping, and outcome decoding; although it affects wallet initialization and discovery, the diff does not itself change consensus, funds movement, coin selection, cryptography, key handling, network deserialization, or storage migrations. - Phase 1 reviewers:
muse-spark-1.3-contributor— ffi-engineer (completed, effort xhigh); agentphase1-reviewer,muse-spark-1.3-contributor— rust-quality (completed, effort xhigh); agentphase1-reviewer,muse-spark-1.3-contributor— security-auditor (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(zai below 15% reserve: 5h 100% left, weekly 13% left) - Fresh verifier:
gpt-6-astra— final-verifier; agentastra-verifier - Phase 2 reviewers:
gpt-6-astra— general (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,gpt-6-astra— security-auditor (completed, effort high); 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/kotlin-sdk/sdk/src/main/kotlin/org/dashfoundation/dashsdk/wallet/WalletStartup.kt`:
- [SUGGESTION] packages/kotlin-sdk/sdk/src/main/kotlin/org/dashfoundation/dashsdk/wallet/WalletStartup.kt:92-94: Unknown startup status discriminant throws instead of falling back like Swift
The status documentation defines the raw values as an append-only ABI, which permits a newer native library to return a status that an older Kotlin library does not know yet. Swift handles that case by mapping the unknown value to PARTIAL_NO_IDENTITY, the conservative status that does not claim the identity question is settled. Kotlin instead throws IllegalArgumentException from `fromRaw`, turning a forward-compatible result into an unexpected exception and potentially preventing the caller from proceeding to Core SPV. The test currently locks in the divergent behavior; it should instead verify the conservative fallback.
| fun fromRaw(raw: Int): WalletStartupStatus = | ||
| entries.firstOrNull { it.raw == raw } | ||
| ?: throw IllegalArgumentException("unknown WalletStartupStatus discriminant $raw") |
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🟡 Suggestion: Unknown startup status discriminant throws instead of falling back like Swift
The status documentation defines the raw values as an append-only ABI, which permits a newer native library to return a status that an older Kotlin library does not know yet. Swift handles that case by mapping the unknown value to PARTIAL_NO_IDENTITY, the conservative status that does not claim the identity question is settled. Kotlin instead throws IllegalArgumentException from fromRaw, turning a forward-compatible result into an unexpected exception and potentially preventing the caller from proceeding to Core SPV. The test currently locks in the divergent behavior; it should instead verify the conservative fallback.
| fun fromRaw(raw: Int): WalletStartupStatus = | |
| entries.firstOrNull { it.raw == raw } | |
| ?: throw IllegalArgumentException("unknown WalletStartupStatus discriminant $raw") | |
| fun fromRaw(raw: Int): WalletStartupStatus = | |
| entries.firstOrNull { it.raw == raw } ?: PARTIAL_NO_IDENTITY |
source: muse-spark-1.3-contributor (phase1-reviewer: ffi-engineer, rust-quality, security-auditor)
2 participants
Issue being fixed
platform-walletalready owns the DashPay startup ordering (#4359, gated on seed ownership by #4368) andSwift already drives it. Kotlin has no binding, so Android clients cannot run the ordered bring-up at all.
The consequence on a restored wallet is missed money. DashPay contact accounts only start watching their
addresses once they are registered. If Core SPV starts first, the scan passes the heights that fund those
addresses while nothing is watching them, and the coins are never seen. A later rescan does not help: the
addresses were not in the filter query when those blocks were tested.
Measured on a restored CoinJoin-heavy testnet wallet before this binding existed: 12 receiving-chain coins
worth 0.0836 DASH simply absent, plus a class of contact payments whose records were never built.
What was done
rs-unified-sdk-jni/src/wallet_manager.rs: JNI entry point that resolves the mnemonic and signer, callsPlatformWalletManager::start_wallet_subsystems, and returns a packed outcome blob.WalletStartup.kt:WalletStartupStatus(the status codes the Rust side reports) andWalletStartupOutcome(status, discovery count, whether DashPay sync ran, drained and pending counts,elapsed ms).
PlatformWalletManager.startWalletSubsystems(walletId, budgetSecs = 0, gapLimit = 0): suspending, runs onthe IO dispatcher behind the teardown gate, validates its arguments, and maps native errors. The budget is
never unbounded because this call gates Core SPV.
WalletManagerNative: the native declaration.WalletStartupTest: 6 tests over the outcome decoding and the status mapping.No behaviour change for any existing caller: this only adds a binding to an API that already exists.
How this was tested
kotlin-sdk :sdk:testDebugUnitTest— 435 tests, 0 failures (6 of them the new class).cargo check -p rs-unified-sdk-jniclean;cargo fmt --checkandclippyclean for the touched file.startSpv,over eight successive test builds on two large restored testnet wallets:
zero coins missing, 14 contact accounts registered before the scan began.
sessions before the ordered bring-up is now present in every run.
Summary by CodeRabbit
New Features
Tests