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fix: (backport) post zero priority fee to avoid gas price bump failure in zetacore#3934

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ws4charlie merged 2 commits intodevelopfrom
backport-fix-gas-price-bump-failure
May 30, 2025
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fix: (backport) post zero priority fee to avoid gas price bump failure in zetacore#3934
ws4charlie merged 2 commits intodevelopfrom
backport-fix-gas-price-bump-failure

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@ws4charlie ws4charlie commented May 29, 2025

Description

Backport the original fix #3930

How Has This Been Tested?

  • Tested CCTX in localnet
  • Tested in development environment
  • Go unit tests
  • Go integration tests
  • Tested via GitHub Actions

Summary by CodeRabbit

  • Bug Fixes
    • Resolved gas price bump failures on EVM chains by posting a zero priority fee, ensuring smoother transaction processing.
  • Documentation
    • Updated changelog with details of the fix for gas price handling on EVM chains.
  • Tests
    • Adjusted test cases to align with the updated priority fee logic for EVM transactions.

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coderabbitai bot commented May 29, 2025

📝 Walkthrough

Walkthrough

The changes update the gas price posting logic for EVM chains to always use a zero priority fee, reflecting a shift to legacy transaction types and avoiding gas price bump failures. Related tests were adjusted, and a changelog entry was added. The priority fee determination method was exported, but its logic remains unchanged.

Changes

File(s) Change Summary
changelog.md Added an entry describing the fix for zero priority fee posting on EVM chains (PR #3934).
zetaclient/chains/evm/observer/observer_gas.go Hardcoded priority fee to zero in PostGasPrice; exported DeterminePriorityFee; updated method calls.
zetaclient/chains/evm/observer/observer_gas_test.go Made mock expectations optional; commented out EIP-1559 priority fee test, referencing an open issue.

Sequence Diagram(s)

sequenceDiagram
    participant Observer
    participant Zetacore

    Observer->Zetacore: PostGasPrice(baseFee, priorityFee=0)
    Zetacore-->>Observer: Ack/Result
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@ws4charlie ws4charlie marked this pull request as ready for review May 29, 2025 15:15
@ws4charlie ws4charlie requested a review from a team as a code owner May 29, 2025 15:15
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codecov bot commented May 29, 2025

Codecov Report

Attention: Patch coverage is 87.50000% with 1 line in your changes missing coverage. Please review.

Project coverage is 64.84%. Comparing base (c796d35) to head (a7c40af).
Report is 2 commits behind head on develop.

Files with missing lines Patch % Lines
zetaclient/chains/evm/observer/observer_gas.go 87.50% 1 Missing ⚠️
Additional details and impacted files

Impacted file tree graph

@@             Coverage Diff             @@
##           develop    #3934      +/-   ##
===========================================
- Coverage    64.92%   64.84%   -0.08%     
===========================================
  Files          471      471              
  Lines        34413    34417       +4     
===========================================
- Hits         22343    22319      -24     
- Misses       11036    11069      +33     
+ Partials      1034     1029       -5     
Files with missing lines Coverage Δ
zetaclient/chains/evm/observer/observer_gas.go 22.97% <87.50%> (-35.60%) ⬇️
🚀 New features to boost your workflow:
  • ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

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Actionable comments posted: 3

🧹 Nitpick comments (1)
zetaclient/chains/evm/observer/observer_gas.go (1)

46-48: Consider the necessity of exporting DeterminePriorityFee.

The function has been exported but is no longer used internally in the PostGasPrice flow. This creates an inconsistency where we maintain functionality that contradicts the current architectural decision to use zero priority fees.

Consider either:

  1. Keeping the function private if it's not needed externally
  2. Adding documentation explaining when this exported function should be used
  3. Removing the function entirely if the zero priority fee approach is permanent

Note: Static analysis indicates this line isn't covered by tests, which is expected given the current usage pattern.

🧰 Tools
🪛 GitHub Check: codecov/patch

[warning] 48-48: zetaclient/chains/evm/observer/observer_gas.go#L48
Added line #L48 was not covered by tests

📜 Review details

Configuration used: .coderabbit.yaml
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between c796d35 and a7c40af.

📒 Files selected for processing (3)
  • changelog.md (1 hunks)
  • zetaclient/chains/evm/observer/observer_gas.go (3 hunks)
  • zetaclient/chains/evm/observer/observer_gas_test.go (2 hunks)
🧰 Additional context used
📓 Path-based instructions (1)
`**/*.go`: Review the Go code, point out issues relative to principles of clean code, expressiveness, and performance.

**/*.go: Review the Go code, point out issues relative to principles of clean code, expressiveness, and performance.

  • zetaclient/chains/evm/observer/observer_gas_test.go
  • zetaclient/chains/evm/observer/observer_gas.go
🪛 GitHub Check: codecov/patch
zetaclient/chains/evm/observer/observer_gas.go

[warning] 48-48: zetaclient/chains/evm/observer/observer_gas.go#L48
Added line #L48 was not covered by tests

⏰ Context from checks skipped due to timeout of 90000ms (1)
  • GitHub Check: start-e2e-test / e2e
🔇 Additional comments (2)
zetaclient/chains/evm/observer/observer_gas.go (1)

18-22: LGTM: Clear documentation of the architectural change.

The comments effectively explain the rationale for hardcoding the priority fee to zero, with appropriate links to the relevant code and issue. This change aligns with the shift from EIP-1559 to legacy transactions.

changelog.md (1)

62-62: LGTM: Accurate and well-formatted changelog entry.

The changelog entry correctly documents this fix under the appropriate section, with a clear description of the change and its purpose. The entry follows the established format and provides sufficient context for users.

@ws4charlie ws4charlie enabled auto-merge May 29, 2025 16:40
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I created a PR just before #3933 but it's fine let's merge this one

@ws4charlie ws4charlie added this pull request to the merge queue May 30, 2025
Merged via the queue into develop with commit ff3d338 May 30, 2025
49 checks passed
@ws4charlie ws4charlie deleted the backport-fix-gas-price-bump-failure branch May 30, 2025 09:50
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3 participants