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fix: Refactor Wait Functions Implementation #330

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@crStiv crStiv commented Dec 24, 2024

This PR implements a more efficient approach to the Wait functions by:

  • Adding a common wait helper function that handles both L1 and L2 block waiting
  • Converting WaitL1 and WaitL2 to use this shared implementation
  • Improving error handling with proper error wrapping
  • Adding type safety through the BlockByNumberInterface interface

Changes made:

  • Created new stack.go file with Stack structure and wait methods
  • Added common wait implementation in stack_test.go
  • Improved code reusability and maintainability

Closes #186

Summary by CodeRabbit

  • New Features

    • Introduced a new package for enhanced testing configurations.
    • Added a Stack struct to facilitate interactions with Ethereum Layer 1 and Layer 2 networks.
    • Implemented methods to wait for a specified number of blocks on both Layer 1 and Layer 2.
    • Added a new interface for retrieving block information by number.
  • Bug Fixes

    • Improved error handling for block retrieval during the waiting process.

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coderabbitai bot commented Dec 24, 2024

Walkthrough

The pull request introduces a new e2e package with a Stack struct designed for testing Ethereum Layer 1 and Layer 2 network interactions. The struct includes methods WaitL1 and WaitL2 that allow waiting for a specified number of blocks on respective network layers. A supporting wait function is implemented in the test file, providing a mechanism to poll and synchronize with blockchain block progression through a BlockByNumberInterface.

Changes

File Change Summary
e2e/stack.go - Added Stack struct with l1Client and l2Client fields
- Implemented WaitL1(numBlocks uint64) error method
- Implemented WaitL2(numBlocks uint64) error method
e2e/stack_test.go - Added BlockByNumberInterface interface
- Implemented wait(client BlockByNumberInterface, numBlocks uint64) error function

Assessment against linked issues

Objective Addressed Explanation
Make WaitL1 and WaitL2 separate functions [#186] Methods are still part of the struct, not separate standalone functions

Possibly related PRs

Suggested reviewers

  • NiloCK
  • joshklop

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Actionable comments posted: 2

🧹 Nitpick comments (1)
e2e/stack_test.go (1)

693-717: Efficient polling mechanism.
The loop with time.Sleep(500 * time.Millisecond) is straightforward. You can also consider using a context with a timeout to avoid potential hangs.

🧰 Tools
🪛 golangci-lint (1.62.2)

693-693: wait already declared through import of package wait ("github.com/ethereum-optimism/optimism/op-e2e/e2eutils/wait")

(typecheck)


694-694: undefined: context

(typecheck)

📜 Review details

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

📥 Commits

Reviewing files that changed from the base of the PR and between 06cb9c7 and a55a512.

📒 Files selected for processing (2)
  • e2e/stack.go (1 hunks)
  • e2e/stack_test.go (1 hunks)
🧰 Additional context used
🪛 golangci-lint (1.62.2)
e2e/stack_test.go

693-693: wait already declared through import of package wait ("github.com/ethereum-optimism/optimism/op-e2e/e2eutils/wait")

(typecheck)


689-689: undefined: context

(typecheck)


694-694: undefined: context

(typecheck)

🔇 Additional comments (4)
e2e/stack.go (4)

1-1: File inclusion and package declaration.
Package declaration is aligned with the PR objective to add a new e2e package. This setup is correct.


14-15: New fields in the Stack struct.
The new fields l1Client and l2Client will help manage connections to L1 and L2 networks, respectively. Ensure these pointers are initialized properly before usage to avoid potential nil-pointer dereferences.


19-21: Streamlined wait logic for L1 blocks.
Using a shared helper function wait effectively reduces code duplication. Make sure the context or other cancellation mechanisms are in place to avoid indefinite waits if the network is not responding.


24-26: Streamlined wait logic for L2 blocks.
Calls the same wait function as WaitL1, promoting DRY principles.

}

// wait waits for the specified number of blocks for the given client
func wait(client BlockByNumberInterface, numBlocks uint64) error {
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⚠️ Potential issue

Naming collision with imported wait package.
Static analysis indicates a potential conflict with the imported "github.com/ethereum-optimism/optimism/op-e2e/e2eutils/wait" package. If you need that package, consider renaming your local wait function to avoid collisions.

-func wait(client BlockByNumberInterface, numBlocks uint64) error {
+func waitForBlocks(client BlockByNumberInterface, numBlocks uint64) error {
     ...
 }
📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change
func wait(client BlockByNumberInterface, numBlocks uint64) error {
func waitForBlocks(client BlockByNumberInterface, numBlocks uint64) error {
🧰 Tools
🪛 golangci-lint (1.62.2)

693-693: wait already declared through import of package wait ("github.com/ethereum-optimism/optimism/op-e2e/e2eutils/wait")

(typecheck)

Comment on lines +687 to +690
// BlockByNumberInterface defines the interface for getting a block by number
type BlockByNumberInterface interface {
BlockByNumber(context.Context, *big.Int) (*types.Block, error)
}
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⚠️ Potential issue

Missing import for context.
Lines 694 and 697 rely on context.Background(), but there is no dedicated import statement for "context" in this file snippet.

 package e2e_test

 import (
     "crypto/ecdsa"
     "fmt"
     "math/big"
     "testing"
     "time"
+    "context"

     ...
 )

Committable suggestion skipped: line range outside the PR's diff.

🧰 Tools
🪛 golangci-lint (1.62.2)

689-689: undefined: context

(typecheck)

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Make WaitL1 and WaitL2 separate functions
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