"""

Walkthrough

The version tag was incremented from "v4.5.8" to "v4.5.9". In the relayer logic, the calculation for the expected base fee delta in gas oracle updates was refined to only add 1 when the gas price difference is positive. A nil check was introduced to prevent dereferencing a nil commit timestamp during batch timeout checks.

Changes

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant L1Relayer
    participant GasOracle

    User->>L1Relayer: Trigger gas oracle update
    L1Relayer->>L1Relayer: Calculate gasPriceDiff
    alt gasPriceDiff > 0
        L1Relayer->>L1Relayer: expectedBaseFeeDelta += 1
    else
        L1Relayer->>L1Relayer: expectedBaseFeeDelta unchanged
    end
    L1Relayer->>GasOracle: Update if threshold exceeded

    User->>L1Relayer: Check batch commit timeout
    alt batches[0].CommittedAt != nil
        L1Relayer->>L1Relayer: Compute timeout duration
    else
        L1Relayer->>L1Relayer: Skip timeout check
    end

Possibly related PRs

• scroll-tech/scroll#1565: Modifies l1_relayer.go to add a condition on BlobBaseFee before default gas price mode and removes chainCfg usage, also affecting gas oracle update logic in the same file.
• scroll-tech/scroll#1603: Updates version tag in common/version/version.go similar to this PR.
• scroll-tech/scroll#1564: Updates version tag in common/version/version.go to a different version number.

Suggested labels

bump-version

Suggested reviewers

• georgehao
• zimpha

Poem

A hop and a skip, the version hops high,
From eight up to nine, see the numbers fly!
Gas fees are checked with a keener eye,
And nils are now caught, so no code will cry.
The relayer hums on, as Scroll bunnies sigh.
🐇✨
"""

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Reviewing files that changed from the base of the PR and between 830ced0 and 82c1d79.

• rollup/internal/controller/relayer/l1_relayer.go (2 hunks)

• rollup/internal/controller/relayer/l1_relayer.go

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Codecov Report

❌ Patch coverage is 0% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 40.68%. Comparing base (826357a) to head (82c1d79).
⚠️ Report is 80 commits behind head on develop.

@@             Coverage Diff             @@
##           develop    #1657      +/-   ##
===========================================
- Coverage    40.68%   40.68%   -0.01%     
===========================================
  Files          225      225              
  Lines        18415    18419       +4     
===========================================
  Hits          7493     7493              
- Misses       10191    10195       +4     
  Partials       731      731              

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