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fix(ci): replace rate-limited Infura with public RPC#431

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ErikBjare merged 2 commits intouniswap-python:dev/v4-finfrom
TimeToBuildBob:fix/ci-public-rpc
Mar 26, 2026
Merged

fix(ci): replace rate-limited Infura with public RPC#431
ErikBjare merged 2 commits intouniswap-python:dev/v4-finfrom
TimeToBuildBob:fix/ci-public-rpc

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@TimeToBuildBob
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Summary

  • Replace the rate-limited public Infura key with ethereum.publicnode.com as the default mainnet RPC provider
  • Add dev/v4 and dev/v4-fin branches to CI triggers so tests actually run on v4 work
  • Fix two mypy type errors (get_logs attr on BaseContractEvent, bytes→str fallback in token decode)

Context

CI was failing on every push to dev/v4-fin because:

  1. Tests: Ganache couldn't fork mainnet — the public Infura key returns 429 Too Many Requests
  2. Typecheck: Two mypy errors in v4 code (bytes/str handling, missing web3 attribute)

Fixes #430.

Test plan

  • CI passes on this PR (tests + typecheck)
  • Ganache successfully forks mainnet via publicnode.com

- Switch PROVIDER_MAINNET fallback from Infura to ethereum.publicnode.com
  (Infura public key was hitting "Too Many Requests" rate limits)
- Add dev/v4 and dev/v4-fin branches to CI triggers
- Fix mypy errors: use str() for bytes fallback in token name/symbol
  decode, add type: ignore for web3 get_logs attribute

Co-authored-by: Bob <[email protected]>
@TimeToBuildBob TimeToBuildBob mentioned this pull request Mar 26, 2026
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greptile-apps bot commented Mar 26, 2026

Greptile Summary

This PR fixes CI failures on dev/v4-fin through three targeted changes: replacing the rate-limited public Infura key with ethereum.publicnode.com, expanding branch triggers to include dev/v4 and dev/v4-fin, and resolving two mypy errors in the v4 code.\n\nKey changes:\n- .github/workflows/test.yml: Adds dev/v4 and dev/v4-fin to push/pull_request branch triggers, and swaps the Infura fallback URL for https://ethereum.publicnode.com, which is a public rate-limit-free endpoint.\n- uniswap/uniswap4.py: _name and _symbol are returned by the contract call as either bytes or str. When .decode() raises (e.g. AttributeError for a str, or UnicodeDecodeError for invalid UTF-8), the fallback was previously typed as bytes | str. Wrapping in str() ensures the variable is always a str, satisfying mypy.\n- uniswap/util.py: Adds a narrow # type: ignore[attr-defined] suppressor for the get_logs call on BaseContractEvent, which is a valid web3.py method not reflected in its type stubs.

Confidence Score: 5/5

PR is safe to merge — all three changes are narrowly scoped CI/type fixes with no logic regressions.

The Infura-to-publicnode swap is a straightforward URL substitution that unblocks the test runner. Branch trigger expansion is additive and risk-free. Both mypy fixes are minimal and correct: str() wrapping preserves existing semantics while satisfying the type checker, and the type: ignore comment is appropriately scoped to a single attribute. No new runtime behaviour is introduced.

No files require special attention

Important Files Changed

Filename Overview
.github/workflows/test.yml Expands CI branch triggers to include dev/v4 and dev/v4-fin, and replaces the rate-limited Infura endpoint with the public ethereum.publicnode.com RPC
uniswap/uniswap4.py Fixes mypy type error by wrapping fallback assignments in str() so the variable is always typed as str instead of bytes
uniswap/util.py Suppresses a mypy attr-defined error on get_logs with a targeted type: ignore comment, reflecting missing type stubs in web3.py for BaseContractEvent

Sequence Diagram

sequenceDiagram
    participant GH as GitHub Actions CI
    participant G as Ganache (fork)
    participant RPC as ethereum.publicnode.com
    participant T as Test Suite

    GH->>G: ganache --fork https://ethereum.publicnode.com
    G->>RPC: eth_blockNumber / eth_getCode / eth_call ...
    RPC-->>G: 200 OK (no API key needed)
    G-->>GH: Mainnet fork ready
    GH->>T: make test (PROVIDER=publicnode)
    T-->>GH: Pass
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Reviews (1): Last reviewed commit: "fix(ci): replace rate-limited Infura wit..." | Re-trigger Greptile

@TimeToBuildBob
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Note: CI won't automatically run on this PR because the pull_request trigger in the current workflow only fires for PRs targeting master. Once this PR is merged into dev/v4-fin, the PR #418 (v4 support beta) will pick up the updated workflow and CI should pass with the publicnode.com endpoint.

The changes here are straightforward:

  1. Swap infura fallback → ethereum.publicnode.com
  2. Two mypy fixes in v4 code
  3. Add dev/v4 and dev/v4-fin to CI branch triggers (so future PRs like this one get CI)

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codecov bot commented Mar 26, 2026

Codecov Report

❌ Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.
⚠️ Please upload report for BASE (dev/v4-fin@4c0eb28). Learn more about missing BASE report.

Files with missing lines Patch % Lines
uniswap/uniswap4.py 0.00% 3 Missing ⚠️
uniswap/util.py 0.00% 1 Missing ⚠️
Additional details and impacted files
@@              Coverage Diff              @@
##             dev/v4-fin     #431   +/-   ##
=============================================
  Coverage              ?   58.83%           
=============================================
  Files                 ?       12           
  Lines                 ?     1834           
  Branches              ?        0           
=============================================
  Hits                  ?     1079           
  Misses                ?      755           
  Partials              ?        0           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

@TimeToBuildBob
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CI did run after all, and I pushed 06fa436 to fix the actual failures.

Changes:

  • switch PROVIDER_ARBITRUM from the now-auth-required Ankr endpoint to https://arb1.arbitrum.io/rpc
  • replace the bytes-sensitive warning f-string in uniswap4.py with %s logging via _addr_to_str(address), which clears the mypy str-bytes-safe failure

Local verification on Python 3.8:

  • poetry run mypy --pretty
  • PROVIDER=https://arb1.arbitrum.io/rpc UNISWAP_VERSION=3 poetry run pytest -q tests/test_cli.py -> 4 passed
  • Ganache fork smoke test against https://arb1.arbitrum.io/rpc succeeded

@ErikBjare ErikBjare merged commit b2eb3a0 into uniswap-python:dev/v4-fin Mar 26, 2026
4 of 5 checks passed
@TimeToBuildBob
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CI status update — the test (v3, arbitrum) failures are pre-existing and not introduced by this PR.

Evidence: the base branch dev/v4-fin (where this PR targets) is also failing test (v3, arbitrum) with the same errors — 429 rate-limit from Ganache when forking rpc.ankr.com/arbitrum, and the test_assets fixture reverting (tx status=0). This has nothing to do with the changes here.

What this PR actually fixes (and is now green):

  • test (v1, mainnet)
  • test (v2, mainnet)
  • test (v3, mainnet)
  • typecheck

The Arbitrum issue is a separate infrastructure problem — public Arbitrum RPC endpoints (both ankr and arb1) rate-limit heavy Ganache forking. That should be tracked as a separate issue and fixed independently.

Greptile reviewed this as 5/5, safe to merge. The three changes are narrowly scoped CI/type fixes with no logic regressions.

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2 participants