Fix remove sequencer

[SegueII]

Summary by CodeRabbit

• Bug Fixes
  • Adjusted the staker removal process so that staker information is retained after removal from the active list, rather than being deleted.
• Chores
  • Updated deployed contract bytecode and associated bindings to reflect the latest contract version.

[coderabbitai]

Walkthrough

The updates replace the compiled bytecode for the L2Staking smart contract across multiple files, reflecting a new contract build. In the Solidity source, the removal of staker entries from the stakers mapping is omitted in two functions, resulting in staker data persisting after removal from active lists.

Changes

Files/Paths	Change Summary
bindings/bin/l2staking_deployed.hex	Entire hex bytecode replaced with a new compiled contract binary.
bindings/bindings/l2staking.go	Updated L2StakingMetaData.Bin with new contract bytecode; ABI unchanged.
bindings/bindings/l2staking_more.go	Replaced L2StakingDeployedBin value with new deployed contract bytecode.
contracts/contracts/l2/staking/L2Staking.sol	Removed deletion of staker entries from stakers mapping in removeStakers and emergencyRemoveStakers.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant L2StakingContract

    User->>L2StakingContract: Call removeStakers/removeEmergencyStakers(removeList)
    L2StakingContract->>L2StakingContract: Update stakerRankings, stakerAddresses, candidateNumber
    L2StakingContract->>L2StakingContract: (Old: delete stakers[remove[i]])
    L2StakingContract-->>User: Emit StakerRemoved event

Loading

Poem

In bytecode fields where rabbits hop,
The staker data doesn’t drop—
Removed from ranks, but still they stay,
Their memory lives another day.
With hex anew and bindings tight,
The contract’s future looks quite bright!
🐇✨

---

📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between bb825ee and 90ed133.

📒 Files selected for processing (4)

• bindings/bin/l2staking_deployed.hex (1 hunks)
• bindings/bindings/l2staking.go (1 hunks)
• bindings/bindings/l2staking_more.go (1 hunks)
• contracts/contracts/l2/staking/L2Staking.sol (0 hunks)

💤 Files with no reviewable changes (1)

• contracts/contracts/l2/staking/L2Staking.sol

⏰ Context from checks skipped due to timeout of 90000ms (8)

• GitHub Check: test
• GitHub Check: test
• GitHub Check: test
• GitHub Check: check
• GitHub Check: test
• GitHub Check: check
• GitHub Check: check
• GitHub Check: test

🔇 Additional comments (5)

bindings/bindings/l2staking.go (2)

1-3: Generated code update - change appears consistent with PR objectives.

This file contains auto-generated Go bindings, and the warning correctly indicates that manual changes would be lost. The bytecode update on line 49 reflects recompilation of the underlying L2Staking Solidity contract.

---

49-49: Bytecode update reflects Solidity contract changes.

The compiled contract bytecode has been updated to reflect the underlying Solidity changes related to staker removal logic mentioned in the AI summary. Since the ABI remains unchanged, this maintains compatibility with existing integrations while incorporating the "fix remove sequencer" functionality.

bindings/bindings/l2staking_more.go (2)

1-4: Ensure generated code is up-to-date.

Since this is generated code, please confirm that this bytecode was generated using the latest build tools and corresponds to the intended Solidity source changes.

---

16-16:

Details

❓ Verification inconclusive

Verify storage implications of retaining staker data.

The AI summary indicates that staker entries are no longer removed from the stakers mapping. This change means staker data persists in storage even after removal, which could lead to:

• Increased storage costs over time
• Potential gas cost implications for operations that iterate over stakers
• Different behavior for any logic that checks mapping existence

Please confirm this behavioral change is intentional and document the rationale. Run the following script to check for functions that might be affected by this change:

---

🏁 Script executed:

#!/bin/bash
# Search for functions that interact with the stakers mapping
ast-grep --pattern 'stakers[$_]'

# Search for any iteration over stakers
rg -A 5 'for.*stakers|stakers.*length' 

# Look for staker removal logic in the Solidity source
fd -e sol -x rg -A 10 'delete stakers\[|removeStakers|emergencyRemoveStakers' {}

Length of output: 13808

---

🏁 Script executed:

#!/bin/bash
# Check for explicit mapping deletions in L2Staking.sol
rg -n 'delete\s*stakers' contracts/contracts/l2/staking/L2Staking.sol

# Locate the definition and any invocations of _cleanStakerStore
rg -n '_cleanStakerStore' -n contracts/contracts/l2/staking/L2Staking.sol

# Find where deleteList is populated and used
rg -n 'deleteList' -n contracts/contracts/l2/staking/L2Staking.sol

Length of output: 212

---

🏁 Script executed:

#!/bin/bash
# Search for explicit mapping deletions of stakers
rg -n "delete stakers" -n .

# Find the definition of the internal cleanup routine
rg -n "function _cleanStakerStore" -n .

# Check where deleteList is declared and modified
rg -n "deleteList" -n .

Length of output: 23957

---

Confirm intentional retention of L2 staker mapping entries

Our search shows that in contracts/contracts/l2/staking/L2Staking.sol, neither removeStakers nor emergencyRemoveStakers ever calls delete stakers[…]. Unlike the L1 implementation (which uses _cleanStakerStore and explicit delete stakers[...]), L2 simply updates stakerAddresses and stakerRankings but leaves the underlying stakers mapping intact. As a result, removed staker data remains in storage indefinitely, which may:

• Increase persistent storage usage over time
• Affect gas costs if the mapping is ever iterated or accessed in bulk
• Diverge from any expectations around “removed” vs. “inactive” staker checks

Please confirm this behavior is intentional, and document the design rationale (or update the implementation) to ensure storage and gas implications are understood and approved.

• File: contracts/contracts/l2/staking/L2Staking.sol
– Functions: removeStakers, emergencyRemoveStakers (no mapping deletions)
• Action: Confirm intent, document rationale (or introduce cleanup logic if needed)

bindings/bin/l2staking_deployed.hex (1)

1-2:

Details

❓ Verification inconclusive

Ensure bytecode consistency across files.

This hex bytecode should match the one in l2staking_more.go. Please verify that both files contain identical bytecode and were generated from the same source compilation.

Run the following script to verify bytecode consistency:

---

🏁 Script executed:

#!/bin/bash
# Extract bytecode from l2staking_more.go and compare with hex file
echo "Extracting bytecode from Go file..."
go_bytecode=$(grep -A1 'L2StakingDeployedBin = "' bindings/bindings/l2staking_more.go | tail -1 | sed 's/.*"\(0x[^"]*\)".*/\1/')

echo "Reading hex file..."
hex_bytecode=$(cat bindings/bin/l2staking_deployed.hex | tr -d '\n')

if [ "$go_bytecode" = "$hex_bytecode" ]; then
    echo "✓ Bytecodes match"
else
    echo "✗ Bytecodes do not match!"
    echo "Lengths: Go=${#go_bytecode}, Hex=${#hex_bytecode}"
fi

# Also check if the bytecode in l2staking.go matches (if it exists)
if [ -f "bindings/bindings/l2staking.go" ]; then
    echo "Checking l2staking.go..."
    rg 'Bin.*=.*"0x' bindings/bindings/l2staking.go | head -5
fi

Length of output: 81300

---

I’ll locate the Go binding that defines L2StakingDeployedBin and extract its value for comparison:

This will confirm we’re comparing the correct Go constant against the hex file before matching their full contents.

---

🏁 Script executed:

#!/bin/bash
# Find the Go file defining L2StakingDeployedBin
file=$(grep -Ril 'L2StakingDeployedBin' --include '*.go' . | head -1)
echo "Found Go binding: $file"

# Show the bytecode constant definition
echo "Bytecode in Go binding:"
grep -A1 'L2StakingDeployedBin' "$file" | tail -1

# For reference, show first & last 40 chars of the hex file
echo "Hex file sample (start...end):"
head -1 bindings/bin/l2staking_deployed.hex | cut -c1-40
echo "…"
tail -1 bindings/bin/l2staking_deployed.hex | rev | cut -c1-40 | rev

Length of output: 825

---

Unable to auto-extract Go binding bytecode—manual check needed

Please verify that the deployed bytecode in
• bindings/bin/l2staking_deployed.hex
exactly matches the L2StakingDeployedBin (or equivalent) constant in
• bindings/bindings/l2staking_more.go

• Open l2staking_more.go, locate the hex literal for the deployed bin,
• Compare it end-to-end with the contents of l2staking_deployed.hex.
Ensure they were generated from the same compilation.

✨ Finishing Touches

• 📝 Generate Docstrings

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

🪧 Tips

Chat

There are 3 ways to chat with CodeRabbit:

• Review comments: Directly reply to a review comment made by CodeRabbit. Example:
  • I pushed a fix in commit <commit_id>, please review it.
  • Explain this complex logic.
  • Open a follow-up GitHub issue for this discussion.
• Files and specific lines of code (under the "Files changed" tab): Tag @coderabbitai in a new review comment at the desired location with your query. Examples:
  • @coderabbitai explain this code block.
  • @coderabbitai modularize this function.
• PR comments: Tag @coderabbitai in a new PR comment to ask questions about the PR branch. For the best results, please provide a very specific query, as very limited context is provided in this mode. Examples:
  • @coderabbitai gather interesting stats about this repository and render them as a table. Additionally, render a pie chart showing the language distribution in the codebase.
  • @coderabbitai read src/utils.ts and explain its main purpose.
  • @coderabbitai read the files in the src/scheduler package and generate a class diagram using mermaid and a README in the markdown format.
  • @coderabbitai help me debug CodeRabbit configuration file.

Support

Need help? Create a ticket on our support page for assistance with any issues or questions.

Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments.

CodeRabbit Commands (Invoked using PR comments)

• @coderabbitai pause to pause the reviews on a PR.
• @coderabbitai resume to resume the paused reviews.
• @coderabbitai review to trigger an incremental review. This is useful when automatic reviews are disabled for the repository.
• @coderabbitai full review to do a full review from scratch and review all the files again.
• @coderabbitai summary to regenerate the summary of the PR.
• @coderabbitai generate docstrings to generate docstrings for this PR.
• @coderabbitai generate sequence diagram to generate a sequence diagram of the changes in this PR.
• @coderabbitai resolve resolve all the CodeRabbit review comments.
• @coderabbitai configuration to show the current CodeRabbit configuration for the repository.
• @coderabbitai help to get help.

Other keywords and placeholders

• Add @coderabbitai ignore anywhere in the PR description to prevent this PR from being reviewed.
• Add @coderabbitai summary to generate the high-level summary at a specific location in the PR description.
• Add @coderabbitai anywhere in the PR title to generate the title automatically.

CodeRabbit Configuration File (.coderabbit.yaml)

• You can programmatically configure CodeRabbit by adding a .coderabbit.yaml file to the root of your repository.
• Please see the configuration documentation for more information.
• If your editor has YAML language server enabled, you can add the path at the top of this file to enable auto-completion and validation: # yaml-language-server: $schema=https://coderabbit.ai/integrations/schema.v2.json

Documentation and Community

• Visit our Documentation for detailed information on how to use CodeRabbit.
• Join our Discord Community to get help, request features, and share feedback.
• Follow us on X/Twitter for updates and announcements.