feat: add bounded three-hop routes - #195
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📝 WalkthroughWalkthroughChangesBounded three-hop routes
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: ⚪ Minimal · up to This PR adds bounded three-hop route discovery and regenerated cache entries while preserving deterministic ordering; no actionable merge-blocking risk remains after normal checks and review. Sequence Diagram(s)sequenceDiagram
participant RouteGraph
participant RouteUtils
participant RouteService
participant CacheRoutes
participant BatchProcessor
participant PoolCostReader
RouteGraph->>RouteUtils: provide pools and token pairs
RouteUtils->>RouteUtils: generate eligible paths up to three hops
RouteUtils->>RouteService: return canonical routes
RouteService->>RouteService: select by hop category, cost, and path
CacheRoutes->>BatchProcessor: process deduplicated routes
BatchProcessor->>PoolCostReader: read memoized pool costs
PoolCostReader-->>BatchProcessor: return route costs
CacheRoutes->>CacheRoutes: validate complete chain generation
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
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🧪 Generate unit tests (beta)
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Actionable comments posted: 2
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Inline comments:
In `@README.md`:
- Around line 93-95: Update the route-hop documentation to limit the three-hop
maximum specifically to automatically discovered routes, while explicitly
stating that caller-supplied connected paths may contain longer routes.
In `@scripts/cacheRoutes/README.md`:
- Line 21: Update the README heading “Cache specific network” to “Cache a
specific network” for grammatical completeness.
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📒 Files selected for processing (20)
README.mddocs/adrs/0001-bounded-three-hop-routes.mddocs/adrs/README.mddocs/plans/0001-bounded-three-hop-routes.mddocs/plans/README.mdscripts/cacheRoutes/README.mdscripts/cacheRoutes/batchProcessor.tsscripts/cacheRoutes/completeness.tsscripts/cacheRoutes/index.tsscripts/cacheRoutes/spread.tsscripts/cacheRoutes/statistics.tssrc/cache/routes.tssrc/core/types/route.tssrc/services/routes/RouteService.tssrc/utils/pathEncoder.tssrc/utils/routeUtils.tstests/unit/cacheRoutes.test.tstests/unit/services/RouteService.test.tstests/unit/utils/pathEncoder.test.tstests/unit/utils/routeUtils.test.ts
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🧰 Additional context used
🪛 LanguageTool
docs/plans/0001-bounded-three-hop-routes.md
[style] ~205-~205: Three successive sentences begin with the same word. Consider rewording the sentence or use a thesaurus to find a synonym.
Context: ...d. - pnpm build passed. - pnpm size passed at 263.48 kB for CommonJS and 105.97 kB...
(ENGLISH_WORD_REPEAT_BEGINNING_RULE)
scripts/cacheRoutes/README.md
[grammar] ~21-~21: Use a hyphen to join words.
Context: ... bash pnpm cacheRoutes ### Cache specific network ```bash # By network n...
(QB_NEW_EN_HYPHEN)
🔇 Additional comments (18)
README.md (1)
35-44: LGTM!Also applies to: 67-70, 118-135, 180-180, 191-205
docs/adrs/0001-bounded-three-hop-routes.md (1)
1-210: LGTM!docs/adrs/README.md (1)
1-20: LGTM!tests/unit/utils/pathEncoder.test.ts (1)
1-55: LGTM!src/services/routes/RouteService.ts (1)
5-10: LGTM!Also applies to: 31-44, 114-114, 186-186, 221-221, 262-267, 335-367
scripts/cacheRoutes/statistics.ts (1)
9-9: LGTM!Also applies to: 20-20, 34-34, 60-61
scripts/cacheRoutes/completeness.ts (1)
1-14: LGTM!scripts/cacheRoutes/index.ts (1)
15-15: LGTM!Also applies to: 31-31, 71-104, 127-128, 139-157
tests/unit/cacheRoutes.test.ts (1)
1-156: LGTM!docs/plans/0001-bounded-three-hop-routes.md (1)
1-228: LGTM!docs/plans/README.md (1)
1-12: LGTM!src/core/types/route.ts (1)
30-31: LGTM!src/utils/routeUtils.ts (1)
17-22: LGTM!Also applies to: 171-180, 217-370, 517-520, 535-536, 555-650
tests/unit/utils/routeUtils.test.ts (1)
10-13: LGTM!Also applies to: 129-154, 175-175, 188-189, 270-363, 376-405, 439-498, 627-627
src/utils/pathEncoder.ts (1)
23-23: LGTM!Also applies to: 46-47, 83-84
tests/unit/services/RouteService.test.ts (1)
4-19: LGTM!Also applies to: 60-174
scripts/cacheRoutes/batchProcessor.ts (1)
3-3: LGTM!Also applies to: 18-19, 31-31, 73-73, 85-85
scripts/cacheRoutes/spread.ts (1)
2-58: LGTM!Also applies to: 109-121
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Reviewed by Cursor Bugbot for commit ffd4e56. Configure here.
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Addressed the CodeRabbit review in 5719f5e: clarified the automatic route-discovery limit, corrected the cache heading, replied to both inline comments, and resolved both threads. CodeRabbit approved the updated head. |
Route cache semantic diffBase: The generated cache changes from 377 to 411 routes. The semantic diff contains 34 additions, 0 removals, 0 path replacements, and 0 cost changes. The large line diff also contains 187 hop-order-only changes. They reverse existing pool arrays into canonical endpoint order without changing the pools or costs.
Chain 137: added routes
Chain 42220: added routes
Chain 80002: added routes
Chain 11142220: added routes
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2 participants
Description
Extend SDK route discovery and the generated route cache to support paths with
at most three hops. A three-hop route is eligible only when its endpoint pair
has no direct or two-hop path.
This adds the Polygon
USDC → USDm → EURm → EUROProute and equivalent newlyreachable pairs on supported chains. The regenerated cache grows from 377 to
411 routes, with 34 eligible three-hop additions.
Other changes
Tested
pnpm lintpnpm test:unit— 26 suites and 468 tests passedpnpm buildpnpm size— CommonJS 263.36 kB; ESM 105.93 kBtrunk check --no-fix --exclude=eslintcycle, reverse-duplicate, and shorter-path eligibility invariants
Celo, and Celo Sepolia
deterministic autoreview, and a fresh-context three-pass semantic autoreview
The broad public-RPC integration suite remains non-green because Monad Testnet
enforced its 15-request-per-second limit and current Base Sepolia fixtures
failed. Those failures did not exercise the new three-hop routes. The targeted
live quotes passed.
The external Claude Security scan was skipped because source-code egress to
Anthropic was not authorized. The local security specialist found no issues.
Related issues
Backwards compatibility
The discovery change is additive. Existing direct and two-hop paths remain
unchanged. The public path encoder continues to accept longer caller-supplied
connected paths; the three-hop limit applies only to SDK discovery and caches.
Documentation
docs/adrs/0001-bounded-three-hop-routes.mddocs/plans/0001-bounded-three-hop-routes.mdNote
Medium Risk
Changes swap routing and the shipped route cache (more hops, higher gas/failure surface), but behavior is additive with explicit guards and heavy test coverage; no on-chain contract changes.
Overview
Adds bounded three-hop route discovery for token pairs whose minimum path length in the pool graph is exactly three (no direct or two-hop alternative). Existing direct and two-hop routes stay the same; the regenerated route cache grows by 34 routes (377 → 411), including cases like Polygon USDC ↔ EUROP.
Route discovery and lookup use the same eligibility rule for fresh and cached paths. Cached
findRoutepicks the lowest-cost candidate with deterministic tie-breaks (fewer hops, stable path order). Three-hop routes never outrank shorter options.Cache generation deduplicates reverse paths before RPC cost reads, memoizes per-pool costs (with eviction on failure for retries), reports three-hop stats, and refuses to write the consolidated cache if any requested chain fails (
assertCompleteChainGeneration).Docs: ADR 0001, completed implementation plan, README notes on three-hop behavior and supported chains, and updated
cacheRoutesscript docs.Reviewed by Cursor Bugbot for commit ffd4e56. Configure here.
Summary by CodeRabbit
New Features
Bug Fixes
Documentation