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feat/bridger-cli #370

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@mani99brar mani99brar commented Dec 4, 2024

PR-Codex overview

This PR focuses on enhancing the bridger-cli project by adding new features, improving configurations, and refining the codebase, particularly around transactions, epoch handling, and event logging.

Detailed summary

  • Added workspaces to package.json.
  • Created SQL script to initialize graphnode_db.
  • Configured TypeScript and Jest for bridger-cli.
  • Implemented ShutdownSignal class for shutdown handling.
  • Developed transaction handling logic in TransactionHandler.
  • Enhanced event logging with BotEvents.
  • Added testing for various utilities and functionalities.
  • Introduced Docker configurations for local development.
  • Updated .env.example and .env.dist files for environment variables.
  • Refined claim handling and verification processes in fetchClaim.
  • Enhanced error handling with custom error classes.

The following files were skipped due to too many changes: bridger-cli/src/bridger.test.ts

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}

Summary by CodeRabbit

  • New Features

    • Introduced environment configuration file for bridger-cli with essential variables.
    • Added new TransactionHandler class for managing blockchain transactions.
    • Implemented functions for epoch handling and claim management.
    • Created integration and unit tests for various functionalities.
    • Added new SQL command for creating a database and a script for starting Hardhat forks.
    • Established a comprehensive multi-service Docker Compose configuration for the development environment.
    • Introduced a logging utility for event handling and a new enumeration for bot states.
    • Added custom error classes for better error handling in the CLI.
  • Bug Fixes

    • Improved robustness of snapshot handling in VeaInbox.ts and VeaOutbox.ts.
  • Documentation

    • Added configuration files for Jest and TypeScript to streamline development.
    • Updated example environment file with new testing configurations.
  • Chores

    • Created Dockerfile for a Node.js application setup.

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coderabbitai bot commented Dec 4, 2024

Walkthrough

The pull request introduces significant enhancements to the bridger-cli project, including a new environment configuration file (.env.dist), a package.json file defining project dependencies and scripts, and multiple TypeScript files implementing core functionalities for managing blockchain transactions and claims. Additionally, it establishes a Docker environment for deployment and includes various utility functions and configuration files for testing and development.

Changes

File Change Summary
bridger-cli/.env.dist New environment configuration file added with several key variables for the application.
bridger-cli/package.json New package.json file created to define project metadata, dependencies, and scripts.
bridger-cli/src/bridger.ts Enhanced module with a comprehensive watch function for managing claims and epochs.
bridger-cli/src/consts/bridgeRoutes.ts New file defining the IBridge interface and a mapping of bridge configurations.
bridger-cli/src/utils/ethers.ts New utility functions for interacting with Ethereum wallets and contracts.
bridger-cli/src/utils/graphQueries.ts New asynchronous functions for querying a GraphQL subgraph related to claims.
bridger-cli/tsconfig.json New TypeScript configuration file added for project settings.
contracts/Dockerfile New Dockerfile created to set up a container environment for the application.
contracts/docker-compose.yml New Docker Compose file defining multi-service configuration for a development environment.
contracts/initGraphDB.sql New SQL command to create a database named graphnode_db.
contracts/start-forks.sh New script for initiating Hardhat forks for Ethereum networks.
package.json Updated to include a new workspace entry for bridger-cli.
veascan-subgraph-inbox/src/VeaInbox.ts Modifications to the handleSnapshotSent function for improved epoch comparison logic.
veascan-subgraph-outbox/src/VeaOutbox.ts Changes to the handleVerified function for better index handling and null checks.
bridger-cli/jest.config.ts New Jest configuration file created for testing setup.
bridger-cli/src/bridger.test.ts New integration tests for bridger functionality.
bridger-cli/src/utils/claim.test.ts New unit tests for fetchClaim and hashClaim functions.
bridger-cli/src/utils/claim.ts New file for managing claims with ClaimStruct type and related functions.
bridger-cli/src/utils/epochHandler.test.ts New unit tests for epoch handling functions.
bridger-cli/src/utils/epochHandler.ts New asynchronous functions for managing epoch ranges and block numbers.
bridger-cli/src/utils/shutdown.ts New ShutdownSignal class for managing shutdown state.
bridger-cli/src/utils/transactionHandler.test.ts New unit tests for the TransactionHandler class.
bridger-cli/src/utils/transactionHandler.ts New TransactionHandler class for managing transaction functionalities.

Possibly related PRs

  • fix: integration tests ArbToEth #324: The changes in the ArbToEth.ts file involve constants related to epochs, which may interact with the new environment variables defined in the main PR, particularly those related to blockchain operations and epoch management.
  • chore: arbSep to chiado devnet deployments #325: The introduction of the VeaInboxArbToGnosis and RouterArbToGnosis contracts relates to the environment configuration for cross-chain messaging, which aligns with the new environment variables added in the main PR for managing blockchain interactions.

Suggested labels

Package: Contracts

Suggested reviewers

  • alcercu
  • jaybuidl

🐇 In the world of code, we hop and play,
New configs and scripts brighten the day.
With bridges and claims, we leap with glee,
In the realm of blockchain, come join me!
Let's code together, make magic unfold,
With every new feature, our story is told! 🌟


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Actionable comments posted: 16

🧹 Outside diff range and nitpick comments (11)
veascan-subgraph-outbox/src/VeaOutbox.ts (2)

Line range hint 29-35: Fix similar loop decrement issue in handleChallenged

The handleChallenged function has the same loop decrement issue. The loop counter isn't being updated correctly.

Apply this fix:

  for (
    let i = ref.totalClaims.minus(BigInt.fromI32(1));
    i.ge(BigInt.fromI32(0));
-   i.minus(BigInt.fromI32(1))
+   i = i.minus(BigInt.fromI32(1))
  ) {
🧰 Tools
🪛 Biome (1.9.4)

[error] 70-70: Change to an optional chain.

Unsafe fix: Change to an optional chain.

(lint/complexity/useOptionalChain)


Line range hint 63-79: Consider extracting claim lookup logic

Both handleVerified and handleChallenged perform similar claim lookups by epoch. Consider extracting this into a shared utility function to improve maintainability and reduce code duplication.

Here's a suggested implementation:

function findClaimByEpoch(epoch: BigInt): Claim | null {
  const ref = getRef();
  for (
    let i = ref.totalClaims.minus(BigInt.fromI32(1));
    i.ge(BigInt.fromI32(0));
    i = i.minus(BigInt.fromI32(1))
  ) {
    const claim = Claim.load(i.toString());
    if (claim && claim.epoch.equals(epoch)) {
      return claim;
    }
  }
  return null;
}

This would simplify both event handlers and ensure consistent claim lookup behavior.

🧰 Tools
🪛 Biome (1.9.4)

[error] 70-70: Change to an optional chain.

Unsafe fix: Change to an optional chain.

(lint/complexity/useOptionalChain)

bridger-cli/src/utils/graphQueries.ts (2)

1-10: Add JSDoc documentation and consider more specific types

The interface looks well-structured, but could benefit from:

  1. JSDoc documentation explaining the purpose and constraints of each field
  2. More specific types for blockchain-related fields (e.g., stateroot might be better typed as 0x-prefixed hex string)
+/** Interface representing claim data from the subgraph */
 interface ClaimData {
+  /** Unique identifier of the claim */
   id: string;
+  /** Address of the bridger who made the claim */
-  bridger: string;
+  bridger: `0x${string}`;
+  /** State root hash of the claim */
-  stateroot: string;
+  stateroot: `0x${string}`;
   timestamp: number;
   challenged: boolean;
-  txHash: string;
+  txHash: `0x${string}`;
 }

1-87: Consider architectural improvements for better maintainability

To improve the codebase architecture, consider:

  1. Create a centralized GraphQL client configuration:

    • Implement a singleton client with proper error handling
    • Add retry mechanisms for failed requests
    • Include proper timeout handling
  2. Use a type-safe environment configuration:

    • Consider using zod or similar for runtime validation
    • Create a centralized config module
  3. Implement proper error handling:

    • Create custom error classes
    • Add proper error logging strategy
    • Consider adding metrics for failed requests

Would you like me to provide example implementations for any of these suggestions?

bridger-cli/src/bridger.ts (1)

80-88: Replace var with let or const for variable declarations

Using var can lead to unexpected behavior due to function scoping and hoisting. It's recommended to use let or const for variable declarations to ensure block scoping and prevent potential bugs.

Apply this diff to update variable declarations:

- var claim = {
+ let claim = {
  stateRoot: claimData.stateroot,
  claimer: claimData.bridger,
  timestampClaimed: claimData.timestamp,
  timestampVerification: 0,
  blocknumberVerification: 0,
  honest: 0,
  challenger: "0x0000000000000000000000000000000000000000",
};

And similarly for other instances in the code.

Also applies to: 268-276

bridger-cli/src/utils/bridger.test.ts (1)

132-184: Consider splitting complex test cases into smaller, focused tests

The test case "should make new claim if last claim was challenged" covers multiple scenarios, making it complex and potentially harder to maintain. Splitting it into smaller, focused tests can improve readability and ease debugging.

contracts/docker-compose.yml (2)

75-75: Consider platform compatibility for host.docker.internal

host.docker.internal is not supported on all platforms. Consider making this configurable or using alternative networking approaches.

Consider using environment variables for the Ethereum node URL:

-      ethereum: mainnet:http://host.docker.internal:8546/
+      ethereum: mainnet:${ETHEREUM_NODE_URL:-http://host.docker.internal:8546/}

57-57: Fix trailing whitespace

Remove trailing whitespace from line 57.

-      - "8545:8545" 
+      - "8545:8545"
🧰 Tools
🪛 yamllint (1.35.1)

[error] 57-57: trailing spaces

(trailing-spaces)

veascan-subgraph-inbox/src/VeaInbox.ts (1)

118-125: Improve null safety handling and error reporting

While the null check for snapshot.epoch is good, there are a few improvements we can make:

  1. Use optional chaining for better readability
  2. Add error handling for when no matching snapshot is found

Consider this improvement:

-    if (snapshot && snapshot.epoch) {
-      if (BigInt.compare(snapshot.epoch as BigInt, epochSent) == 0) {
-        // Snapshot found, update resolving field and save
-        snapshot.resolving = true;
-        snapshot.save();
-        fallback.snapshot = snapshotId;
-        break;
-      }
+    if (snapshot?.epoch && BigInt.compare(snapshot.epoch, epochSent) === 0) {
+      // Snapshot found, update resolving field and save
+      snapshot.resolving = true;
+      snapshot.save();
+      fallback.snapshot = snapshotId;
+      break;
+    }
+    // Add this after the loop to handle case when no snapshot is found
+    if (!fallback.snapshot) {
+      log.warning('No matching snapshot found for epoch {}', [epochSent.toString()]);
     }
🧰 Tools
🪛 Biome (1.9.4)

[error] 118-118: Change to an optional chain.

Unsafe fix: Change to an optional chain.

(lint/complexity/useOptionalChain)

contracts/Dockerfile (1)

9-14: Add .dockerignore and optimize COPY operations

To prevent unnecessary files from being copied and to maintain clean builds:

  1. Create a .dockerignore file
  2. Optimize the COPY operations

Create a .dockerignore file with:

node_modules
.git
*.md
.env*

Then optimize the COPY operations:

-COPY . .
-COPY start-forks.sh /start-forks.sh
+COPY --chown=appuser:appgroup . .
bridger-cli/src/consts/bridgeRoutes.ts (1)

3-8: Add JSDoc documentation for the interface and its properties

The interface defines critical bridge parameters but lacks documentation explaining the purpose and constraints of each property. Consider adding JSDoc comments to improve maintainability.

+/**
+ * Interface defining the configuration parameters for a bridge
+ */
 interface IBridge {
+  /** Duration of an epoch in seconds */
   epochPeriod: number;
+  /** Required deposit amount in wei */
   deposit: BigNumber;
+  /** Minimum period for challenges in seconds */
   minChallengePeriod: number;
+  /** Maximum allowed sequencer delay in seconds */
   sequencerDelayLimit: number;
 }
📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 3eebb3f and 2416bcb.

⛔ Files ignored due to path filters (1)
  • yarn.lock is excluded by !**/yarn.lock, !**/*.lock
📒 Files selected for processing (15)
  • bridger-cli/.env.dist (1 hunks)
  • bridger-cli/package.json (1 hunks)
  • bridger-cli/src/bridger.ts (1 hunks)
  • bridger-cli/src/consts/bridgeRoutes.ts (1 hunks)
  • bridger-cli/src/utils/bridger.test.ts (1 hunks)
  • bridger-cli/src/utils/ethers.ts (1 hunks)
  • bridger-cli/src/utils/graphQueries.ts (1 hunks)
  • bridger-cli/tsconfig.json (1 hunks)
  • contracts/Dockerfile (1 hunks)
  • contracts/docker-compose.yml (1 hunks)
  • contracts/initGraphDB.sql (1 hunks)
  • contracts/start-forks.sh (1 hunks)
  • package.json (1 hunks)
  • veascan-subgraph-inbox/src/VeaInbox.ts (1 hunks)
  • veascan-subgraph-outbox/src/VeaOutbox.ts (1 hunks)
✅ Files skipped from review due to trivial changes (4)
  • contracts/initGraphDB.sql
  • bridger-cli/tsconfig.json
  • bridger-cli/.env.dist
  • bridger-cli/package.json
🧰 Additional context used
🪛 Biome (1.9.4)
veascan-subgraph-inbox/src/VeaInbox.ts

[error] 118-118: Change to an optional chain.

Unsafe fix: Change to an optional chain.

(lint/complexity/useOptionalChain)

veascan-subgraph-outbox/src/VeaOutbox.ts

[error] 70-70: Change to an optional chain.

Unsafe fix: Change to an optional chain.

(lint/complexity/useOptionalChain)

🪛 yamllint (1.35.1)
contracts/docker-compose.yml

[error] 57-57: trailing spaces

(trailing-spaces)

🪛 GitHub Check: Scorecard
contracts/Dockerfile

[warning] 1-1: Pinned-Dependencies
score is 7: containerImage not pinned by hash
Remediation tip: pin your Docker image by updating node to node@sha256:97cc66381c956b1df1a6b14f733f882cd0305867ea01dfdb924f0f62585f2904
Click Remediation section below for further remediation help

🔇 Additional comments (5)
veascan-subgraph-outbox/src/VeaOutbox.ts (1)

70-72: Improved null safety in claim verification

The code now properly checks for claim existence before accessing it, making it more robust against potential runtime errors. The initialization of the Verification entity is also safer.

🧰 Tools
🪛 Biome (1.9.4)

[error] 70-70: Change to an optional chain.

Unsafe fix: Change to an optional chain.

(lint/complexity/useOptionalChain)

bridger-cli/src/utils/ethers.ts (1)

59-72: ⚠️ Potential issue

Handle unsupported chainId in getVeaOutboxDevnetProvider function

The getVeaOutboxDevnetProvider function lacks an else clause to handle unsupported chainId values. This omission might result in returning undefined without an error when an unsupported chainId is provided.

Apply this diff to add error handling for unsupported chainId:

function getVeaOutboxDevnetProvider(
  veaOutboxAddress: string,
  privateKey: string,
  rpc: JsonRpcProvider,
  chainId: number
) {
  if (chainId == 11155111) {
    return VeaOutboxArbToEthDevnet__factory.connect(veaOutboxAddress, getWalletRPC(privateKey, rpc));
  } else if (chainId == 10200) {
    return VeaOutboxArbToGnosisDevnet__factory.connect(veaOutboxAddress, getWalletRPC(privateKey, rpc));
+ } else {
+   throw new Error(`Unsupported chainId: ${chainId}`);
  }
}

Likely invalid or redundant comment.

package.json (1)

19-19: LGTM: Workspace addition is properly configured

The addition of "bridger-cli" to the workspaces array is correctly implemented and aligns with the PR objectives.

contracts/Dockerfile (1)

1-17: Verify the exposed ports configuration

The Dockerfile exposes ports 8545 and 8546, which are typically used for Ethereum JSON-RPC endpoints. Let's verify if these ports align with the Hardhat configuration in the project.

✅ Verification successful

Let me gather more information about the network configuration and fork setup to better understand the port usage.


The exposed ports 8545 and 8546 are correctly configured

The exposed ports in the Dockerfile align perfectly with the project's configuration:

  • Port 8545 is used for the Arbitrum Sepolia fork (NETWORK1)
  • Port 8546 is used for the Sepolia fork (NETWORK2)

This is confirmed by:

  • The start-forks.sh script which starts two Hardhat nodes on ports defined by $PORT1 (8545) and $PORT2 (8546)
  • The usage of these ports in test files (bridger.test.ts)
  • The Hardhat configuration supporting forking functionality
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for Hardhat network configurations and port settings
rg -A 5 "hardhat\.config" 
rg "8545|8546" --type ts --type js

Length of output: 647


Script:

#!/bin/bash
# Check the start-forks script and any other relevant network configuration
cat contracts/start-forks.sh
rg "fork" --type ts --type js -A 5

Length of output: 1000

🧰 Tools
🪛 GitHub Check: Scorecard

[warning] 1-1: Pinned-Dependencies
score is 7: containerImage not pinned by hash
Remediation tip: pin your Docker image by updating node to node@sha256:97cc66381c956b1df1a6b14f733f882cd0305867ea01dfdb924f0f62585f2904
Click Remediation section below for further remediation help

bridger-cli/src/consts/bridgeRoutes.ts (1)

1-29: Verify bridge configurations across the system

Let's ensure these bridge configurations are consistent with other parts of the system.

✅ Verification successful

Let me gather more specific information about the configurations in the related files to ensure consistency.

The previous results showed multiple files using similar time periods and chain IDs. Let's verify the exact values to ensure consistency across these critical configurations.


Bridge configurations are consistent across the system

The verification confirms that the bridge configurations in bridger-cli/src/consts/bridgeRoutes.ts are consistent with other parts of the system:

  • Chain IDs (11155111 for Sepolia and 10200 for Chiado) match across bridger-cli, relayer-cli, and deployment configurations
  • Epoch periods are consistent:
    • Sepolia: 7200 seconds (2 hours)
    • Chiado: 3600 seconds (1 hour)
  • The deposit amount of 1 ETH (1000000000000000000 wei) is unique to the bridger-cli configuration
  • Sequencer delay limit of 86400 seconds (24 hours) is consistently used across deployment configurations
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check for chain IDs usage in environment files and other configurations
echo "Checking chain IDs usage..."
rg -l "11155111|10200" --type-add 'config:*.{json,env,env.dist,yaml,yml}' -tconfig

# Check for time periods usage
echo "Checking time periods usage..."
rg -l "7200|3600|10800|86400" --type-add 'ts:*.ts' -tts

# Check for deposit amount usage
echo "Checking deposit amount..."
rg -l "1000000000000000000" --type-add 'ts:*.ts' -tts

Length of output: 1142


Script:

#!/bin/bash
# Check the specific configuration values in relayer-cli
echo "Checking relayer-cli bridge routes..."
cat relayer-cli/src/consts/bridgeRoutes.ts

# Check the environment variables configuration
echo "Checking environment variables..."
cat bridger-cli/.env.dist

# Check a sample of deployment configurations
echo "Checking deployment configurations..."
cat contracts/deploy/01-outbox/01-chiado-to-arb-sepolia-outbox.ts

Length of output: 7273

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bridger-cli/src/utils/graphQueries.ts Outdated Show resolved Hide resolved
bridger-cli/src/utils/graphQueries.ts Outdated Show resolved Hide resolved
bridger-cli/src/utils/ethers.ts Outdated Show resolved Hide resolved
contracts/Dockerfile Show resolved Hide resolved
contracts/Dockerfile Outdated Show resolved Hide resolved
contracts/Dockerfile Outdated Show resolved Hide resolved
bridger-cli/src/consts/bridgeRoutes.ts Show resolved Hide resolved
bridger-cli/src/consts/bridgeRoutes.ts Outdated Show resolved Hide resolved
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Actionable comments posted: 12

🧹 Outside diff range and nitpick comments (16)
bridger-cli/src/bridger.test.ts (3)

1-1: Use ES6 import for consistency

Replace require("dotenv").config(); with import "dotenv/config"; to maintain consistency with ES6 module syntax.

Apply this diff:

- require("dotenv").config();
+ import "dotenv/config";

12-12: Avoid overriding console.log globally

Overriding console.log can have unintended side effects on other tests. Consider using Jest's mocking capabilities to suppress console output in this test suite.

You can mock console.log in your test suite as follows:

beforeAll(() => {
  jest.spyOn(console, 'log').mockImplementation(() => {});
});

afterAll(() => {
  jest.restoreAllMocks();
});

243-243: Use let or const instead of var for variable declaration

Prefer using let or const over var to ensure block scope and prevent potential hoisting issues.

Apply this diff:

- var claim = {
+ let claim = {
bridger-cli/src/utils/transactionHandler.ts (2)

17-17: Make requiredConfirmations configurable

The requiredConfirmations property is hardcoded to 12. Making this value configurable allows flexibility for different network conditions and can be useful during testing or deployment to different environments.


103-129: Correct variable naming and calculation in verifySnapshot method

In the verifySnapshot method, the variable timeLeft actually represents the time elapsed since the claim relative to minChallengePeriod, which can be misleading.

Consider renaming the variable and adjusting the calculation for clarity:

- const timeLeft = latestBlockTimestamp - this.claim.timestampClaimed - bridgeConfig.minChallengePeriod;
+ const timeElapsed = latestBlockTimestamp - this.claim.timestampClaimed;
+ const timeRemaining = bridgeConfig.minChallengePeriod - timeElapsed;
  console.log("Time remaining for verification: " + timeRemaining);

Adjust the condition accordingly:

- if (timeLeft >= 0) {
+ if (timeRemaining <= 0) {
bridger-cli/src/utils/transactionHandler.test.ts (5)

6-7: Specify types for claim and veaOutbox in tests

In the test setup, claim and veaOutbox are typed as any. Defining appropriate types or interfaces for these objects will improve type safety and make the tests more robust.


112-139: Add tests for error handling in makeClaim

Currently, there are no tests covering scenarios where makeClaim encounters errors during gas estimation or transaction execution. Adding such tests will enhance test coverage and verify that error handling behaves as expected.


142-193: Add tests for error handling in startVerification

Similarly, consider adding tests that simulate exceptions in startVerification to ensure that the method handles errors gracefully.


195-246: Add tests for error handling in verifySnapshot

Including tests for error scenarios in verifySnapshot will help ensure that the method's error handling is effective under different conditions.


248-274: Add tests for error handling in withdrawClaimDeposit

Testing error handling in withdrawClaimDeposit will improve confidence that the method can handle exceptions without causing unhandled rejections.

bridger-cli/src/utils/shutdown.ts (1)

2-14: Improve naming conventions for better readability

Consider renaming the property and methods for clarity:

  • Rename isShutdownSignal to shutdownRequested.
  • Rename getIsShutdownSignal() to isShutdownRequested().
  • Rename setShutdownSignal() to requestShutdown().

This will make the code more intuitive and easier to understand.

Apply this diff to rename the property and methods:

 export class ShutdownSignal {
-  private isShutdownSignal: boolean;
+  private shutdownRequested: boolean;

   constructor(initialState: boolean = false) {
-    this.isShutdownSignal = initialState;
+    this.shutdownRequested = initialState;
   }

-  public getIsShutdownSignal(): boolean {
-    return this.isShutdownSignal;
+  public isShutdownRequested(): boolean {
+    return this.shutdownRequested;
   }

-  public setShutdownSignal(): void {
-    this.isShutdownSignal = true;
+  public requestShutdown(): void {
+    this.shutdownRequested = true;
   }
 }
bridger-cli/src/utils/epochHandler.ts (1)

7-7: Use strict equality for comparison

In JavaScript and TypeScript, it's best practice to use strict equality === instead of == to prevent unexpected type coercion.

Apply this diff to use strict equality:

 if (startEpoch === 0) {
bridger-cli/src/utils/epochHandler.test.ts (2)

50-52: Remove debug console.log statements

These console.log statements appear to be debugging artifacts and should be removed from the test file.

-      console.log(claim);
-      console.log(mockClaim);
       expect(claim).toBeDefined();

Also applies to: 74-76, 123-125


13-17: Improve test descriptions for better clarity

The test descriptions could be more specific about the scenarios being tested. Consider adding more context about the test conditions and expected outcomes.

-    it("should return a valid claim", async () => {
+    it("should return a valid claim when no challenger exists", async () => {

-    it("should return a valid claim with challenger", async () => {
+    it("should return a valid claim when a challenger address is present", async () => {

-    it("should return a valid claim with verification", async () => {
+    it("should return a valid claim with verification timestamps and block numbers", async () => {

Also applies to: 59-60, 81-84

bridger-cli/src/utils/claim.test.ts (1)

1-168: LGTM! Consider adding edge case tests

The test coverage is comprehensive and well-structured. Consider adding edge cases for:

  • Invalid state root formats
  • Malformed challenger addresses
  • Timestamp validation (e.g., verification timestamp before claim timestamp)
bridger-cli/src/bridger.ts (1)

23-23: Replace magic numbers with named constants

Several magic numbers in the code should be replaced with named constants for better maintainability.

Apply this diff:

+ const HONEST_CLAIM_VALUE = 1;
+ const POLLING_INTERVAL = 10 * 1000; // 10 seconds in milliseconds

  const transactionHandlers: { [epoch: number]: TransactionHandler } = {};
  // ... rest of the code ...
-   claim.honest = 1; // Assume the claimer is honest
+   claim.honest = HONEST_CLAIM_VALUE; // Assume the claimer is honest
  // ... rest of the code ...
-   await wait(1000 * 10);
+   await wait(POLLING_INTERVAL);

Also applies to: 80-80, 108-108

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  • bridger-cli/package.json (1 hunks)
  • bridger-cli/src/bridger.test.ts (1 hunks)
  • bridger-cli/src/bridger.ts (1 hunks)
  • bridger-cli/src/utils/claim.test.ts (1 hunks)
  • bridger-cli/src/utils/claim.ts (1 hunks)
  • bridger-cli/src/utils/epochHandler.test.ts (1 hunks)
  • bridger-cli/src/utils/epochHandler.ts (1 hunks)
  • bridger-cli/src/utils/graphQueries.ts (1 hunks)
  • bridger-cli/src/utils/shutdown.ts (1 hunks)
  • bridger-cli/src/utils/transactionHandler.test.ts (1 hunks)
  • bridger-cli/src/utils/transactionHandler.ts (1 hunks)
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🚧 Files skipped from review as they are similar to previous changes (2)
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🧰 Additional context used
📓 Learnings (1)
bridger-cli/src/utils/graphQueries.ts (2)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/graphQueries.ts:12-34
Timestamp: 2024-12-09T09:03:31.474Z
Learning: In `bridger-cli/src/utils/graphQueries.ts`, within the `getClaimForEpoch` function, returning `result['claims'][0]` is sufficient because it will be `undefined` if `result['claims']` is an empty array, making additional checks unnecessary.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/graphQueries.ts:36-58
Timestamp: 2024-12-09T09:04:04.819Z
Learning: In `bridger-cli/src/utils/graphQueries.ts` (TypeScript), the `getVerificationStatus` function is no longer needed and has been removed.
🔇 Additional comments (3)
bridger-cli/src/utils/transactionHandler.ts (1)

40-62: Handle potential race conditions in checkTransactionPendingStatus

In checkTransactionPendingStatus, there could be a race condition if the transaction's status changes between retrieving the receipt and checking confirmations. Ensure appropriate synchronization or additional checks as needed.

bridger-cli/src/utils/graphQueries.ts (1)

36-56: 🛠️ Refactor suggestion

Add error handling to getLastClaimedEpoch

The getLastClaimedEpoch function lacks error handling, which can lead to unhandled exceptions if the request fails. Wrap the function body in a try-catch block to handle potential errors gracefully.

Apply this diff to add error handling:

 const getLastClaimedEpoch = async (): Promise<ClaimData | undefined> => {
+  try {
     const subgraph = process.env.VEAOUTBOX_SUBGRAPH;

     const result = await request(
       `${subgraph}`,
       `{
           claims(first:1, orderBy:timestamp, orderDirection:desc){
           id
                         bridger
                         stateroot
                         timestamp
-                        verification{
-                          timestamp
-                        }
                           challenged
                         }
           
         }`
     );
     return result[`claims`][0];
+  } catch (e) {
+    console.log(e);
+    return undefined;
+  }
 };
⛔ Skipped due to learnings
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/graphQueries.ts:12-34
Timestamp: 2024-12-09T09:03:31.474Z
Learning: In `bridger-cli/src/utils/graphQueries.ts`, within the `getClaimForEpoch` function, returning `result['claims'][0]` is sufficient because it will be `undefined` if `result['claims']` is an empty array, making additional checks unnecessary.
bridger-cli/src/bridger.ts (1)

25-111: ⚠️ Potential issue

Add error handling and timeout mechanism to the main loop

The main loop lacks error handling and could potentially run indefinitely.

The previous review comment about adding error handling is still applicable. Additionally, consider adding a timeout mechanism.

Apply this diff to add timeout and cleanup:

+ const MAX_EXECUTION_TIME = 24 * 60 * 60 * 1000; // 24 hours in milliseconds
+ const startTime = Date.now();

  while (!shutDownSignal.getIsShutdownSignal()) {
+   if (Date.now() - startTime > MAX_EXECUTION_TIME) {
+     console.log("Maximum execution time reached, shutting down");
+     break;
+   }
    // ... rest of the loop code ...
  }
+ // Cleanup
+ Object.values(transactionHandlers).forEach(handler => {
+   // Add cleanup method to TransactionHandler class
+   handler.cleanup?.();
+ });

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Actionable comments posted: 4

🧹 Outside diff range and nitpick comments (2)
bridger-cli/src/bridger.ts (2)

23-23: Add type safety for transaction handlers map

The transaction handlers map lacks proper TypeScript type annotations.

- const transactionHandlers: { [epoch: number]: TransactionHandler } = {};
+ const transactionHandlers: Record<number, TransactionHandler> = {};

113-113: Add type annotation to wait function

The utility function should have proper TypeScript type annotations.

- const wait = (ms) => new Promise((r) => setTimeout(r, ms));
+ const wait = (ms: number): Promise<void> => new Promise((r) => setTimeout(r, ms));
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  • bridger-cli/.env.dist (1 hunks)
  • bridger-cli/src/bridger.ts (1 hunks)
  • bridger-cli/src/utils/claim.test.ts (1 hunks)
  • bridger-cli/src/utils/claim.ts (1 hunks)
  • bridger-cli/src/utils/graphQueries.ts (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (3)
  • bridger-cli/src/utils/graphQueries.ts
  • bridger-cli/.env.dist
  • bridger-cli/src/utils/claim.test.ts
🧰 Additional context used
📓 Learnings (1)
bridger-cli/src/bridger.ts (1)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/bridger.ts:1-8
Timestamp: 2024-12-09T09:48:37.012Z
Learning: The `bridger-cli` directory contains a `.env.dist` file with environment variables, which will be updated with proper documentation.
🔇 Additional comments (5)
bridger-cli/src/bridger.ts (2)

1-9: LGTM! Well-organized imports

The imports are logically structured and all imported utilities are used effectively in the code.


18-20: ⚠️ Potential issue

Add error handling for contract initialization

The contract initialization could fail if addresses are invalid or network is unreachable.

- const veaInbox = getVeaInbox(veaInboxAddress, PRIVATE_KEY, veaInboxProviderURL, chainId);
- const veaOutbox = getVeaOutbox(veaOutboxAddress, PRIVATE_KEY, veaOutboxProviderURL, chainId);
- const epochs = await setEpochRange(veaOutbox, startEpoch);
+ try {
+   const veaInbox = getVeaInbox(veaInboxAddress, PRIVATE_KEY, veaInboxProviderURL, chainId);
+   const veaOutbox = getVeaOutbox(veaOutboxAddress, PRIVATE_KEY, veaOutboxProviderURL, chainId);
+   const epochs = await setEpochRange(veaOutbox, startEpoch);
+ } catch (error) {
+   console.error('Failed to initialize contracts:', error);
+   throw new Error('Contract initialization failed');
+ }

Likely invalid or redundant comment.

bridger-cli/src/utils/claim.ts (3)

1-12: LGTM! Well-structured type definition

The ClaimStruct type is well-defined with appropriate types for blockchain addresses and includes all necessary fields for claim verification.


22-32: ⚠️ Potential issue

Unsafe initialization of claimData persists

The current initialization of claimData as an empty object is unsafe.

Apply this diff to safely initialize the object:

 if (claimData === undefined) {
-  claimData = {} as ClaimData;
+  claimData = {
+    id: '',
+    bridger: ethers.constants.AddressZero,
+    stateroot: ethers.constants.HashZero,
+    timestamp: 0,
+    challenged: false,
+    txHash: '',
+  };

20-21: Address the TODO comment about block range RPC dependency

The TODO comment suggests a potential optimization for log querying that should be addressed.

Would you like me to help implement the block range optimization mentioned in the TODO?

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Actionable comments posted: 0

🧹 Outside diff range and nitpick comments (1)
bridger-cli/src/utils/ethers.ts (1)

50-58: Consider defining constants for chainId values for better readability

Using constants for chainId values enhances code readability and maintainability.

Apply this diff to define constants:

+const SEPOLIA_CHAIN_ID = 11155111;
+const CHIADO_CHAIN_ID = 10200;

 function getVeaOutboxDevnet(veaOutboxAddress: string, privateKey: string, web3ProviderURL: string, chainId: number) {
-  if (chainId == 11155111) {
+  if (chainId == SEPOLIA_CHAIN_ID) {
     return VeaOutboxArbToEthDevnet__factory.connect(veaOutboxAddress, getWallet(privateKey, web3ProviderURL));
-  } else if (chainId == 10200) {
+  } else if (chainId == CHIADO_CHAIN_ID) {
     return VeaOutboxArbToGnosisDevnet__factory.connect(veaOutboxAddress, getWallet(privateKey, web3ProviderURL));
   } else {
     throw new Error(`Unsupported chainId: ${chainId}`);
   }
 }
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  • bridger-cli/src/utils/claim.test.ts (1 hunks)
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🚧 Files skipped from review as they are similar to previous changes (2)
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📓 Learnings (1)
bridger-cli/src/utils/ethers.ts (2)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/ethers.ts:31-37
Timestamp: 2024-12-10T04:59:11.283Z
Learning: In the project, `chainId` validation is performed in outer layers, so individual functions like `getVeaInboxProvider` do not need to handle unsupported `chainId`s.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/ethers.ts:20-82
Timestamp: 2024-12-09T10:18:00.133Z
Learning: In `bridger-cli/src/utils/ethers.ts`, prefer to keep the existing `chainId` checks without refactoring to avoid overcomplicating the code with additional conditional logic.
🔇 Additional comments (5)
bridger-cli/src/utils/ethers.ts (5)

13-15: Function getWallet implementation is clear and correct

The function correctly initializes a new Wallet with the provided private key and web3 provider URL.


17-19: Function getWalletRPC implementation is clear and correct

The function efficiently creates a new Wallet with the given private key and JsonRpcProvider instance.


22-34: Function getVeaInbox correctly connects to Vea Inbox contracts

The switch statement appropriately handles different bridge chains and returns the corresponding Vea Inbox contract instance.


36-48: Function getVeaOutbox correctly connects to Vea Outbox contracts

The implementation mirrors getVeaInbox, handling bridge chains consistently.


60-60: Export statement correctly exports utility functions

The module exports the necessary utility functions for external use.

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Actionable comments posted: 5

🧹 Outside diff range and nitpick comments (5)
bridger-cli/src/utils/claim.ts (3)

32-32: Address the TODO comment about RPC dependency.

The comment suggests potential issues with logs block range and RPC dependency. This should be investigated and resolved.

Would you like me to help implement the block range check for RPC optimization?


54-63: Consider batching RPC calls for better performance.

Multiple sequential RPC calls (queryFilter) are made for verification and challenge logs. Consider batching these calls using Promise.all() for better performance.

-  const verifyLogs = await veaOutbox.queryFilter(veaOutbox.filters.VerificationStarted(epoch));
-  if (verifyLogs.length > 0) {
-    const verificationStartBlock = await veaOutbox.provider.getBlock(verifyLogs[0].blockHash);
-    claim.timestampVerification = verificationStartBlock.timestamp;
-    claim.blocknumberVerification = verificationStartBlock.number;
-  }
-  const challengeLogs = await veaOutbox.queryFilter(veaOutbox.filters.Challenged(epoch));
+  const [verifyLogs, challengeLogs] = await Promise.all([
+    veaOutbox.queryFilter(veaOutbox.filters.VerificationStarted(epoch)),
+    veaOutbox.queryFilter(veaOutbox.filters.Challenged(epoch))
+  ]);
+  if (verifyLogs.length > 0) {
+    const verificationStartBlock = await veaOutbox.provider.getBlock(verifyLogs[0].blockHash);
+    claim.timestampVerification = verificationStartBlock.timestamp;
+    claim.blocknumberVerification = verificationStartBlock.number;
+  }

78-91: Add type annotation for the claim parameter.

While input validation is handled by upper layers, adding type annotation improves code readability and maintainability.

-const hashClaim = (claim) => {
+const hashClaim = (claim: ClaimStruct): string => {
bridger-cli/src/utils/transactionHandler.ts (2)

31-31: Make required confirmations configurable per chain.

Different chains have different finality requirements. Consider making requiredConfirmations configurable through bridge config.

-  public requiredConfirmations: number = 12;
+  public requiredConfirmations: number;
+
+  constructor(
+    chainId: number,
+    epoch: number,
+    veaOutbox: any,
+    claim?: ClaimStruct,
+    fetchBridgeConfig: typeof getBridgeConfig = getBridgeConfig
+  ) {
+    // ... existing initialization
+    const bridgeConfig = this.getBridgeConfig(this.chainId);
+    this.requiredConfirmations = bridgeConfig.requiredConfirmations ?? 12;
+  }

78-158: Enhance logging for better debugging.

While error handling is intentionally omitted, consider adding structured logging with additional context for better debugging.

Example improvement for makeClaim:

-    console.log(`Epoch ${this.epoch} was claimed with trnx hash ${claimTransaction.hash}`);
+    console.log({
+      event: 'claim_submitted',
+      epoch: this.epoch,
+      chainId: this.chainId,
+      txHash: claimTransaction.hash,
+      gasLimit: estimateGas.toString(),
+      timestamp: Math.floor(Date.now() / 1000)
+    });
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📒 Files selected for processing (4)
  • bridger-cli/src/bridger.test.ts (1 hunks)
  • bridger-cli/src/utils/claim.ts (1 hunks)
  • bridger-cli/src/utils/epochHandler.ts (1 hunks)
  • bridger-cli/src/utils/transactionHandler.ts (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
  • bridger-cli/src/bridger.test.ts
🧰 Additional context used
📓 Learnings (3)
bridger-cli/src/utils/claim.ts (3)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/claim.ts:23-32
Timestamp: 2024-12-10T04:59:10.224Z
Learning: In `bridger-cli/src/utils/claim.ts`, within the `fetchClaim` function, when `claimData` is undefined, avoid initializing it with default values, as this can result in incorrect claim values and make issues harder to identify.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/claim.ts:56-69
Timestamp: 2024-12-09T10:54:57.068Z
Learning: In the TypeScript file 'bridger-cli/src/utils/claim.ts', the upper layers handle input validation for the 'hashClaim' function. Therefore, explicit input validation within 'hashClaim' is not necessary.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/claim.ts:42-51
Timestamp: 2024-12-09T10:54:09.943Z
Learning: In the `bridger-cli/src/utils/claim.ts` file, within the `fetchClaim` function, explicit error handling for provider calls and event queries is not required; errors should be allowed to propagate naturally.
bridger-cli/src/utils/epochHandler.ts (1)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/epochHandler.ts:17-17
Timestamp: 2024-12-09T09:43:28.877Z
Learning: In `bridger-cli/src/utils/epochHandler.ts`, within the `getBlockNumberFromEpoch` function, the block difference used to calculate the average block time is always 1000. Therefore, dividing by 1000 directly is appropriate in this case.
bridger-cli/src/utils/transactionHandler.ts (4)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:64-77
Timestamp: 2024-12-09T09:42:34.067Z
Learning: In the `TransactionHandler` class (`bridger-cli/src/utils/transactionHandler.ts`), it's acceptable to let methods like `makeClaim` fail without additional error handling.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:79-101
Timestamp: 2024-12-09T09:42:51.590Z
Learning: In the `bridger-cli/src/utils/transactionHandler.ts` file, within the `TransactionHandler` class, it's acceptable to let methods like `startVerification` fail without additional error handling.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:131-144
Timestamp: 2024-12-09T09:40:49.098Z
Learning: In the `TransactionHandler` class, it's acceptable to let methods like `withdrawClaimDeposit` fail without additional error handling.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:13-13
Timestamp: 2024-12-09T09:40:28.400Z
Learning: In `bridger-cli/src/utils/transactionHandler.ts`, the `veaOutbox` implementations differ for each chain, but a common interface should be defined for type checks to enhance type safety.
🔇 Additional comments (2)
bridger-cli/src/utils/claim.ts (2)

1-12: LGTM! Well-structured type definition.

The ClaimStruct type is well-defined with appropriate TypeScript types for all fields.


37-44: Verify RPC calls for potential rate limiting issues.

Multiple RPC calls are made in sequence which could hit rate limits:

  1. queryFilter for claim logs
  2. getBlock for timestamp

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@mani99brar mani99brar marked this pull request as ready for review December 10, 2024 08:27
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Great job! I am happy and impressed with the work you did on the testing side. I left some suggestions, please feel free to tell me if you find them appropriate or not, as I do not have deep understanding of Vea yet

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Actionable comments posted: 4

🧹 Outside diff range and nitpick comments (6)
contracts/.env.example (3)

19-20: Document port allocation strategy

The comment explains the RPC ports (8545, 8546, 8547) for different forks, but the configured value (8456) doesn't match any of these. This might cause confusion.

Consider updating the comment to include 8456 in the list or adjust the value to match one of the documented ports.


Line range hint 1-7: Enhance security for example API keys

While these are example values, consider following these security best practices:

  1. Use a more obvious example format (e.g., <YOUR_PRIVATE_KEY> or xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx)
  2. Add a comment warning users not to commit their actual keys
-PRIVATE_KEY=0xabc123abc123abc123abc123abc123abc123abc123abc123abc123abc123abc1
+# WARNING: Never commit real private keys or API keys to version control
+PRIVATE_KEY=<YOUR_PRIVATE_KEY> # 64 hex characters
 REPORT_GAS=true
-INFURA_API_KEY=ABC123ABC123ABC123ABC123ABC123ABC1
+INFURA_API_KEY=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

17-17: Clarify empty router network configuration

The comment "Empty for direct routes" might need more context for new developers.

Consider expanding the comment to explain what "direct routes" means in this context and when it should be left empty vs. configured.

contracts/Dockerfile (2)

7-7: Consider using --frozen-lockfile for deterministic builds

While --ignore-scripts is good for security, consider adding --frozen-lockfile to ensure dependency versions are locked.

-RUN yarn install --ignore-scripts
+RUN yarn install --ignore-scripts --frozen-lockfile

17-17: Consider documenting port usage

The exposed ports should be documented to explain their purpose.

-EXPOSE 8545 8546 8547
+# Expose ports for Hardhat forks (inbox, outbox, router)
+EXPOSE 8545 8546 8547
contracts/docker-compose.yml (1)

55-55: Fix trailing whitespace

Remove trailing whitespace after port mappings.

-      - "8545:8545" 
+      - "8545:8545"
-      - "8546:8546" 
+      - "8546:8546"
-      - "8547:8547" 
+      - "8547:8547"

Also applies to: 73-73, 91-91

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  • contracts/.env.example (1 hunks)
  • contracts/Dockerfile (1 hunks)
  • contracts/docker-compose.yml (1 hunks)
  • contracts/start-forks.sh (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
  • contracts/start-forks.sh
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contracts/docker-compose.yml

[error] 55-55: trailing spaces

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[error] 73-73: trailing spaces

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[error] 91-91: trailing spaces

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🔇 Additional comments (3)
contracts/.env.example (1)

14-15: Verify network name compatibility

The specified networks (arbitrum-sepolia and sepolia) should be validated to ensure they match the supported networks in the Infura configuration.

✅ Verification successful

Network names are valid and properly configured

The verification confirms that both arbitrum-sepolia and sepolia networks are valid and extensively used throughout the codebase:

  • Both networks are properly configured in Hardhat (contracts/hardhat.config.ts)
  • The networks are used in bridge routes and deployment scripts
  • The networks are integrated with Infura (sepolia endpoint visible in config)
  • Multiple components (bridger-cli, validator-cli, relayer-cli, veascan-web) support these networks
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check if the network names are valid Infura endpoints
# Expected: Network names should be found in the codebase configuration

# Search for network configuration
rg -A 5 "arbitrum-sepolia|sepolia" --type ts

Length of output: 13458

contracts/Dockerfile (1)

1-4: LGTM: Base image and working directory setup

The setup follows best practices by:

  • Using a specific Node.js version
  • Setting working directory to /home/node which is appropriate for the node user
contracts/docker-compose.yml (1)

109-109: Verify host.docker.internal accessibility

host.docker.internal might not work on all platforms. Consider making this configurable.

✅ Verification successful

Let me check if there are any platform-specific configurations or documentation about this setup.


Based on the documentation found in the README files, particularly in the Graph Node Docker setup, I can now provide a final response:

host.docker.internal configuration is properly documented and handled

The repository already addresses platform-specific concerns for host.docker.internal:

  • For Docker v20.10 and above on Linux, users need to add extra_hosts in docker-compose.yml
  • For Docker versions below v20.10 on Linux, documentation provides clear instructions to replace host.docker.internal with the host IP address using provided commands
  • The setup works by default on macOS and Windows
🏁 Scripts executed

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#!/bin/bash
# Check if there are any platform-specific configurations
rg "host.docker.internal" --type yaml

Length of output: 215


Script:

#!/bin/bash
# Check for any documentation or configuration related to host.docker.internal
fd README -t f -X cat {}

Length of output: 19527

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Actionable comments posted: 4

🧹 Outside diff range and nitpick comments (12)
bridger-cli/src/bridger.ts (4)

14-33: Add type annotations for environment variables and chain configuration.

While the initialization logic is clear, adding TypeScript type annotations would improve maintainability and catch potential type-related issues early.

Apply this diff:

-  const chainId = Number(process.env.VEAOUTBOX_CHAIN_ID);
-  const veaInboxAddress = process.env.VEAINBOX_ADDRESS;
-  const veaInboxProviderURL = process.env.VEAINBOX_PROVIDER;
-  const veaOutboxAddress = process.env.VEAOUTBOX_ADDRESS;
-  const veaOutboxProviderURL = process.env.VEAOUTBOX_PROVIDER;
-  const PRIVATE_KEY = process.env.PRIVATE_KEY;
+  const chainId: number = Number(process.env.VEAOUTBOX_CHAIN_ID);
+  const veaInboxAddress: string = process.env.VEAINBOX_ADDRESS!;
+  const veaInboxProviderURL: string = process.env.VEAINBOX_PROVIDER!;
+  const veaOutboxAddress: string = process.env.VEAOUTBOX_ADDRESS!;
+  const veaOutboxProviderURL: string = process.env.VEAOUTBOX_PROVIDER!;
+  const PRIVATE_KEY: string = process.env.PRIVATE_KEY!;

34-124: Add documentation for claim processing states and transitions.

While the code logic is sound, adding documentation for the different claim states and their transitions would make the code more maintainable and easier to understand.

Add comments explaining the business logic:

   while (!shutDownSignal.getIsShutdownSignal()) {
     let i = 0;
     while (i < epochs.length) {
+      // State 1: Check if epoch can be claimed
       const activeEpoch = epochs[i];
       emitter.emit(BotEvents.CHECKING, activeEpoch);
       let claimableEpochHash = await veaOutbox.claimHashes(activeEpoch);
       let outboxStateRoot = await veaOutbox.stateRoot();
       const finalizedOutboxBlock = await veaOutbox.provider.getBlock("finalized");

+      // State 2: Process unclaimed epoch
       if (claimableEpochHash == ethers.constants.HashZero && activeEpoch == verifiableEpoch) {
         // ... existing comments ...
       }
+      // State 3: Process claimed epoch
       else if (claimableEpochHash != ethers.constants.HashZero) {
         // ... existing comments ...
       }
+      // State 4: Skip processed epoch
       else {
         // ... existing comments ...
       }

125-134: Consider making the wait time configurable.

A fixed wait time of 10 seconds might not be optimal for all network conditions or load scenarios.

Consider making it configurable through environment variables:

+  const POLL_INTERVAL = Number(process.env.POLL_INTERVAL_MS) || 10000;
-    await wait(1000 * 10);
+    await wait(POLL_INTERVAL);

136-141: Add type annotation to the wait utility function.

The wait function would benefit from TypeScript type annotations for better type safety.

Apply this diff:

-const wait = (ms) => new Promise((r) => setTimeout(r, ms));
+const wait = (ms: number): Promise<void> => new Promise((r) => setTimeout(r, ms));
bridger-cli/src/utils/epochHandler.ts (1)

40-52: Extract magic numbers into named constants.

The function uses magic numbers (1000 for block difference and 100 for safety offset) which should be extracted into named constants for better maintainability.

+const BLOCK_SAMPLE_SIZE = 1000;
+const SAFETY_BLOCK_OFFSET = 100;
+
 const getBlockNumberFromEpoch = async (
   veaOutboxRpc: JsonRpcProvider,
   epoch: number,
   epochPeriod: number
 ): Promise<number> => {
   const latestBlock = await veaOutboxRpc.getBlock("latest");
-  const preBlock = await veaOutboxRpc.getBlock(latestBlock.number - 1000);
+  const preBlock = await veaOutboxRpc.getBlock(latestBlock.number - BLOCK_SAMPLE_SIZE);
   const avgBlockTime = (latestBlock.timestamp - preBlock.timestamp) / 1000;

   const epochInSeconds = epoch * epochPeriod;
   const epochBlock = Math.floor(latestBlock.number - (latestBlock.timestamp - epochInSeconds) / avgBlockTime);
-  return epochBlock - 100;
+  return epochBlock - SAFETY_BLOCK_OFFSET;
 };
bridger-cli/src/utils/claim.ts (2)

33-33: Convert TODO to a tracked issue.

The TODO comment about RPC dependency should be converted to a GitHub issue for better tracking.

Would you like me to help create a GitHub issue for tracking this RPC dependency check?


82-95: Add type annotation for claim parameter.

While keeping in mind that upper layers handle input validation, adding type annotation would improve code clarity:

-const hashClaim = (claim) => {
+const hashClaim = (claim: ClaimStruct): string => {
bridger-cli/src/utils/emitter.ts (1)

7-13: Enhance type safety of the emit method

Consider improving type safety by:

  1. Constraining the event parameter to BotEvents
  2. Using a more specific type for args based on each event's requirements
- emit(event: string | symbol, ...args: any[]): boolean {
+ emit(event: BotEvents | string | symbol, ...args: unknown[]): boolean {

Consider creating an event map type to enforce correct argument types for each event:

type BotEventMap = {
  [BotEvents.CHECKING]: [epoch: number];
  [BotEvents.TXN_MADE]: [transaction: string, epoch: number, state: string];
  // ... define for other events
}

emit<E extends BotEvents>(event: E, ...args: BotEventMap[E]): boolean;
bridger-cli/src/utils/logger.ts (2)

15-17: Remove redundant initialize function

The initialize function is just a wrapper that adds no value. Consider removing it and using configurableInitialize directly.

-export const initialize = (emitter: EventEmitter) => {
-  return configurableInitialize(emitter);
-};

54-70: Add transaction hash validation

The transaction-related event handlers should validate the transaction hash format before logging.

const isValidTransactionHash = (hash: string): boolean => 
  /^0x([A-Fa-f0-9]{64})$/.test(hash);

emitter.on(BotEvents.TXN_MADE, (transaction: string, epoch: number, state: string) => {
  if (!isValidTransactionHash(transaction)) {
    console.warn(`Invalid transaction hash format: ${transaction}`);
    return;
  }
  console.log(`${state} transaction for ${epoch} made with hash: ${transaction}`);
});
bridger-cli/src/utils/transactionHandler.ts (2)

78-84: Simplify conditional logic by removing unnecessary else clause.

The else clause is not needed as the return statement in the first branch already prevents execution of subsequent code.

    if (confirmations >= this.requiredConfirmations) {
      this.emitter.emit(BotEvents.TXN_FINAL, trnxHash, confirmations);
      return false;
-    } else {
-      this.emitter.emit(BotEvents.TXN_NOT_FINAL, trnxHash, confirmations);
-      return true;
    }
+    this.emitter.emit(BotEvents.TXN_NOT_FINAL, trnxHash, confirmations);
+    return true;

114-117: Use consistent guard clause pattern across methods.

Both startVerification and verifySnapshot methods use time-based checks, but with slightly different patterns. Consider using the same guard clause pattern for consistency:

// In startVerification
-    if (timeOver < 0) {
-      this.emitter.emit(BotEvents.VERFICATION_CANT_START, -1 * timeOver);
-      return;
-    }

+    const timeLeft = -1 * timeOver;
+    if (timeLeft > 0) {
+      this.emitter.emit(BotEvents.VERFICATION_CANT_START, timeLeft);
+      return;
+    }

// In verifySnapshot (current implementation is good)
    if (timeLeft < 0) {
      this.emitter.emit(BotEvents.CANT_VERIFY_SNAPSHOT, -1 * timeLeft);
      return;
    }

Also applies to: 137-140

📜 Review details

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Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 64427bb and 8e81840.

📒 Files selected for processing (14)
  • bridger-cli/src/bridger.test.ts (1 hunks)
  • bridger-cli/src/bridger.ts (1 hunks)
  • bridger-cli/src/utils/botEvents.ts (1 hunks)
  • bridger-cli/src/utils/claim.test.ts (1 hunks)
  • bridger-cli/src/utils/claim.ts (1 hunks)
  • bridger-cli/src/utils/emitter.ts (1 hunks)
  • bridger-cli/src/utils/epochHandler.test.ts (1 hunks)
  • bridger-cli/src/utils/epochHandler.ts (1 hunks)
  • bridger-cli/src/utils/errors.ts (1 hunks)
  • bridger-cli/src/utils/ethers.ts (1 hunks)
  • bridger-cli/src/utils/logger.ts (1 hunks)
  • bridger-cli/src/utils/shutdown.ts (1 hunks)
  • bridger-cli/src/utils/transactionHandler.test.ts (1 hunks)
  • bridger-cli/src/utils/transactionHandler.ts (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (4)
  • bridger-cli/src/utils/shutdown.ts
  • bridger-cli/src/utils/claim.test.ts
  • bridger-cli/src/bridger.test.ts
  • bridger-cli/src/utils/ethers.ts
🧰 Additional context used
📓 Learnings (6)
bridger-cli/src/utils/transactionHandler.test.ts (1)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:64-77
Timestamp: 2024-12-09T09:42:34.067Z
Learning: In the `TransactionHandler` class (`bridger-cli/src/utils/transactionHandler.ts`), it's acceptable to let methods like `makeClaim` fail without additional error handling.
bridger-cli/src/utils/epochHandler.test.ts (2)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/epochHandler.ts:13-24
Timestamp: 2024-12-10T08:26:12.411Z
Learning: In `bridger-cli/src/utils/epochHandler.ts`, the `setEpochRange` function does not require validation checks for `startEpoch` being non-negative or the epoch range being too large because the upper layer ensures `startEpoch` is always valid and the epoch range is appropriately managed.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/epochHandler.ts:63-68
Timestamp: 2024-12-10T08:27:15.815Z
Learning: In the file `bridger-cli/src/utils/epochHandler.ts`, the calculation within the `checkForNewEpoch` function is correct as implemented and has been tested.
bridger-cli/src/utils/epochHandler.ts (4)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/epochHandler.ts:13-13
Timestamp: 2024-12-11T08:52:17.062Z
Learning: In `bridger-cli/src/utils/epochHandler.ts`, the `veaOutbox` parameter is intentionally typed as `any` because the script is designed to be agnostic for multiple contracts.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/epochHandler.ts:63-68
Timestamp: 2024-12-10T08:27:15.815Z
Learning: In the file `bridger-cli/src/utils/epochHandler.ts`, the calculation within the `checkForNewEpoch` function is correct as implemented and has been tested.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/epochHandler.ts:13-24
Timestamp: 2024-12-10T08:26:12.411Z
Learning: In `bridger-cli/src/utils/epochHandler.ts`, the `setEpochRange` function does not require validation checks for `startEpoch` being non-negative or the epoch range being too large because the upper layer ensures `startEpoch` is always valid and the epoch range is appropriately managed.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/epochHandler.ts:17-17
Timestamp: 2024-12-09T09:43:28.877Z
Learning: In `bridger-cli/src/utils/epochHandler.ts`, within the `getBlockNumberFromEpoch` function, the block difference used to calculate the average block time is always 1000. Therefore, dividing by 1000 directly is appropriate in this case.
bridger-cli/src/bridger.ts (3)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/bridger.ts:113-118
Timestamp: 2024-12-10T04:45:36.079Z
Learning: Graceful shutdown handling in `bridger-cli` will be addressed in future PRs.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/bridger.ts:25-109
Timestamp: 2024-12-09T10:53:55.715Z
Learning: In the `bridger-cli/src/bridger.ts` file, refactoring the main loop and adding additional error handling are not needed unless deemed necessary by the developer.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/bridger.ts:1-8
Timestamp: 2024-12-09T09:48:37.012Z
Learning: The `bridger-cli` directory contains a `.env.dist` file with environment variables, which will be updated with proper documentation.
bridger-cli/src/utils/claim.ts (3)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/claim.ts:23-32
Timestamp: 2024-12-10T04:59:10.224Z
Learning: In `bridger-cli/src/utils/claim.ts`, within the `fetchClaim` function, when `claimData` is undefined, avoid initializing it with default values, as this can result in incorrect claim values and make issues harder to identify.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/claim.ts:56-69
Timestamp: 2024-12-09T10:54:57.068Z
Learning: In the TypeScript file 'bridger-cli/src/utils/claim.ts', the upper layers handle input validation for the 'hashClaim' function. Therefore, explicit input validation within 'hashClaim' is not necessary.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/claim.ts:42-51
Timestamp: 2024-12-09T10:54:09.943Z
Learning: In the `bridger-cli/src/utils/claim.ts` file, within the `fetchClaim` function, explicit error handling for provider calls and event queries is not required; errors should be allowed to propagate naturally.
bridger-cli/src/utils/transactionHandler.ts (4)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:64-77
Timestamp: 2024-12-09T09:42:34.067Z
Learning: In the `TransactionHandler` class (`bridger-cli/src/utils/transactionHandler.ts`), it's acceptable to let methods like `makeClaim` fail without additional error handling.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:131-144
Timestamp: 2024-12-09T09:40:49.098Z
Learning: In the `TransactionHandler` class, it's acceptable to let methods like `withdrawClaimDeposit` fail without additional error handling.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:13-13
Timestamp: 2024-12-09T09:40:28.400Z
Learning: In `bridger-cli/src/utils/transactionHandler.ts`, the `veaOutbox` implementations differ for each chain, but a common interface should be defined for type checks to enhance type safety.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:79-101
Timestamp: 2024-12-09T09:42:51.590Z
Learning: In the `bridger-cli/src/utils/transactionHandler.ts` file, within the `TransactionHandler` class, it's acceptable to let methods like `startVerification` fail without additional error handling.
🪛 Biome (1.9.4)
bridger-cli/src/utils/epochHandler.test.ts

[error] 84-84: Don't focus the test.

The 'only' method is often used for debugging or during implementation. It should be removed before deploying to production.
Consider removing 'only' to ensure all tests are executed.
Unsafe fix: Remove focus from test.

(lint/suspicious/noFocusedTests)

🔇 Additional comments (15)
bridger-cli/src/bridger.ts (1)

1-13: LGTM! Well-organized imports and dependencies.

The code demonstrates good modularity with clear separation of concerns across utility modules.

bridger-cli/src/utils/errors.ts (3)

4-10: LGTM! Well-structured error class.

The ClaimNotFoundError class is properly implemented with a descriptive message that includes the epoch number.


12-18: LGTM! Well-structured error class.

The InvalidStartEpochError class is properly implemented with a clear message that includes the problematic epoch number.


20-26: LGTM! Well-structured error class.

The ClaimNotSetError class is properly implemented with a clear, concise message.

bridger-cli/src/utils/epochHandler.ts (2)

15-26: LGTM! Well-implemented epoch range calculation.

The function correctly handles epoch range calculation with proper error handling using InvalidStartEpochError.


66-73: LGTM! Well-structured with dependency injection.

The function is well-implemented with:

  • Default parameters for better testability
  • Clear dependency injection pattern
  • Clean epoch calculation logic
bridger-cli/src/utils/epochHandler.test.ts (2)

4-37: LGTM! Comprehensive test coverage for setEpochRange.

The test suite thoroughly covers:

  • Success case with valid epoch
  • Error case with invalid start epoch
  • Default rollback behavior

38-65: LGTM! Well-structured test for getBlockNumberFromEpoch.

The test effectively:

  • Mocks block responses
  • Verifies block number calculation
bridger-cli/src/utils/claim.ts (3)

1-13: LGTM! Well-structured type definition and clean imports.

The ClaimStruct type is well-defined with proper TypeScript types, and the imports are specific and purposeful.


15-31: Consider adding a specific type for veaOutbox parameter.

While the JSDoc is well-documented, the any type for veaOutbox reduces type safety. Consider defining an interface for the expected contract shape.

Note: As discussed in previous reviews, if you're using different contract interfaces for each route, you might want to leverage TypeChain-generated types or create a union type to accommodate the variations.


34-44: ⚠️ Potential issue

Reconsider empty object initialization for claimData.

Based on previous learnings, initializing claimData as an empty object could lead to incorrect claim values that are harder to identify.

Consider throwing an error immediately if required data is not available, rather than initializing an empty object:

-    claimData = {} as ClaimData;
+    const claimLogs = await veaOutbox.queryFilter(veaOutbox.filters.Claimed(null, epoch, null));
+    if (claimLogs.length === 0) {
+      throw new ClaimNotFoundError(epoch);
+    }
+    claimData = {
+      bridger: `0x${claimLogs[0].topics[1].slice(26)}`,
+      stateroot: claimLogs[0].data,
+      timestamp: (await veaOutbox.provider.getBlock(claimLogs[0].blockNumber)).timestamp,
+    };
-    const claimLogs = await veaOutbox.queryFilter(veaOutbox.filters.Claimed(null, epoch, null));
-    if (claimLogs.length === 0) {
-      throw new ClaimNotFoundError(epoch);
-    }
-    claimData.bridger = `0x${claimLogs[0].topics[1].slice(26)}`;
-    claimData.stateroot = claimLogs[0].data;
-    claimData.timestamp = (await veaOutbox.provider.getBlock(claimLogs[0].blockNumber)).timestamp;
bridger-cli/src/utils/botEvents.ts (1)

1-28: LGTM! Well-structured event categorization

The events are well-organized into logical categories (Bridger state, Epoch state, Claim state, Transaction state) with clear naming conventions.

bridger-cli/src/utils/emitter.ts (1)

1-14: LGTM! Clean implementation of test event suppression

The MockEmitter effectively suppresses BotEvents during tests while allowing other events to propagate normally.

bridger-cli/src/utils/transactionHandler.ts (1)

33-33: 🛠️ Refactor suggestion

Define a specific interface for veaOutbox.

The veaOutbox property is typed as any, which reduces type safety. Consider implementing the previously suggested interface to enhance type checking while maintaining flexibility for different chain implementations.

interface IVeaOutbox {
  provider: ethers.providers.Provider;
  filters: {
    Claimed: (arg0: any, arg1: number, arg2: any) => any;
    VerificationStarted: (epoch: number) => any;
    Challenged: (epoch: number) => any;
  };
  estimateGas: {
    claim: (epoch: number, stateRoot: string, options: any) => Promise<ethers.BigNumber>;
    startVerification: (epoch: number, claim: ClaimStruct) => Promise<ethers.BigNumber>;
    verifySnapshot: (epoch: number, claim: ClaimStruct) => Promise<ethers.BigNumber>;
    withdrawClaimDeposit: (epoch: number, claim: ClaimStruct) => Promise<ethers.BigNumber>;
  };
}
bridger-cli/src/utils/transactionHandler.test.ts (1)

1-280: Well-structured and comprehensive test coverage!

The test suite effectively covers:

  • Constructor initialization
  • Transaction status checking
  • Claim operations
  • Verification workflows
  • Deposit withdrawals
  • Error cases and edge conditions

Good use of Jest mocks and proper test isolation.

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Actionable comments posted: 0

🧹 Nitpick comments (13)
bridger-cli/src/utils/ethers.ts (2)

12-18: Add error handling for invalid private keys.

The wallet creation functions should validate the private key format to prevent runtime errors.

Apply this diff to add validation:

 function getWallet(privateKey: string, web3ProviderURL: string) {
+  if (!privateKey.match(/^0x[0-9a-fA-F]{64}$/)) {
+    throw new Error('Invalid private key format');
+  }
   return new Wallet(privateKey, new JsonRpcProvider(web3ProviderURL));
 }

 function getWalletRPC(privateKey: string, rpc: JsonRpcProvider) {
+  if (!privateKey.match(/^0x[0-9a-fA-F]{64}$/)) {
+    throw new Error('Invalid private key format');
+  }
   return new Wallet(privateKey, rpc);
 }

20-52: Consider standardizing chain ID handling patterns.

The three VEA connection functions use different patterns for chain ID handling:

  • getVeaInbox: switch without default
  • getVeaOutbox: bridge config with chain names
  • getVeaOutboxDevnet: if-else conditions

Consider standardizing the approach across all functions for better maintainability.

Suggestion: Use the bridge configuration pattern consistently across all functions, as it provides better abstraction and maintainability:

function getVeaInbox(veaInboxAddress: string, privateKey: string, web3ProviderURL: string, chainId: number) {
  const bridge = getBridgeConfig(chainId);
  switch (bridge.chain) {
    case "sepolia":
    case "mainnet":
      return VeaInboxArbToEth__factory.connect(veaInboxAddress, getWallet(privateKey, web3ProviderURL));
    case "chiado":
    case "gnosis":
      return VeaInboxArbToGnosis__factory.connect(veaInboxAddress, getWallet(privateKey, web3ProviderURL));
    default:
      throw new Error(`Unsupported chainId: ${chainId}`);
  }
}
bridger-cli/src/utils/claim.ts (1)

33-33: Convert TODO to GitHub issue

The TODO comment about checking logs block range and RPC dependency should be tracked properly.

Would you like me to create a GitHub issue to track this TODO item?

bridger-cli/src/bridger.ts (2)

20-122: Consider future modularization of the watch function.

While the current implementation is functional, the complexity suggests it could benefit from being broken down into smaller, focused components in a future refactor. This would improve testability and maintainability.

Consider:

  1. Extracting epoch processing logic into a separate function
  2. Creating a dedicated class for epoch state management
  3. Separating the verification logic into its own module

124-124: Add type annotation to wait function.

The utility function should have proper type annotations for better type safety.

-const wait = (ms) => new Promise((r) => setTimeout(r, ms));
+const wait = (ms: number): Promise<void> => new Promise((r) => setTimeout(r, ms));
bridger-cli/src/utils/transactionHandler.ts (1)

69-75: Simplify conditional logic by removing unnecessary else.

The else block can be removed to improve code clarity while maintaining the same functionality.

 if (confirmations >= this.requiredConfirmations) {
   this.emitter.emit(BotEvents.TXN_FINAL, trnxHash, confirmations);
   return false;
-} else {
-  this.emitter.emit(BotEvents.TXN_NOT_FINAL, trnxHash, confirmations);
-  return true;
 }
+this.emitter.emit(BotEvents.TXN_NOT_FINAL, trnxHash, confirmations);
+return true;
bridger-cli/src/utils/claim.test.ts (3)

9-10: Add type annotations for better type safety.

Consider adding explicit type annotations for the test variables to improve type safety and code clarity.

-  let mockClaim: ClaimStruct;
-  let getClaimForEpoch: jest.Mock;
-  let veaOutbox: any;
+  let mockClaim: ClaimStruct;
+  let getClaimForEpoch: jest.Mock<Promise<any>>;
+  let veaOutbox: {
+    queryFilter: jest.Mock;
+    provider: {
+      getBlock: jest.Mock;
+    };
+    filters: {
+      VerificationStarted: jest.Mock;
+      Challenged: jest.Mock;
+      Claimed: jest.Mock;
+    };
+  };

106-125: Add assertions for event emission in fallback test.

The fallback test should verify that appropriate events are emitted when falling back to logs.

   it("should fallback on logs if claimData is undefined", async () => {
     getClaimForEpoch.mockResolvedValueOnce(undefined);
     veaOutbox.queryFilter.mockImplementationOnce(() =>
       Promise.resolve([
         {
           blockNumber: 1234,
           data: mockClaim.stateRoot,
           topics: [ethers.ZeroAddress, `0x${"0".repeat(24)}${mockClaim.claimer.slice(2)}`],
         },
       ])
     );
     veaOutbox.queryFilter.mockImplementationOnce(() => Promise.resolve([]));
     veaOutbox.queryFilter.mockImplementationOnce(() => Promise.resolve([]));

+    const emitSpy = jest.spyOn(transactionHandler.emitter, 'emit');
     const claim = await fetchClaim(veaOutbox, epoch, getClaimForEpoch);

     expect(claim).toBeDefined();
     expect(claim).toEqual(mockClaim);
     expect(getClaimForEpoch).toHaveBeenCalledWith(epoch);
+    expect(emitSpy).toHaveBeenCalledWith(BotEvents.FALLBACK_TO_LOGS);
   });

139-164: Add edge cases for hashClaim tests.

Consider adding test cases for:

  1. Empty/zero values in claim fields
  2. Maximum possible values
  3. Special characters in strings

Example test cases to add:

it("should handle empty values", () => {
  const emptyMockClaim: ClaimStruct = {
    ...mockClaim,
    stateRoot: "0x0000000000000000000000000000000000000000000000000000000000000000",
    claimer: "0x0000000000000000000000000000000000000000"
  };
  const hash = hashClaim(emptyMockClaim);
  expect(hash).toBeDefined();
});

it("should handle maximum values", () => {
  const maxMockClaim: ClaimStruct = {
    ...mockClaim,
    timestampClaimed: Number.MAX_SAFE_INTEGER,
    blocknumberVerification: Number.MAX_SAFE_INTEGER
  };
  const hash = hashClaim(maxMockClaim);
  expect(hash).toBeDefined();
});
bridger-cli/src/utils/transactionHandler.test.ts (4)

9-10: Add type annotations for better type safety.

Consider adding explicit type annotations for the test variables to improve type safety and code clarity.

-  let claim: any;
-  let veaOutbox: any;
+  let claim: ClaimStruct;
+  let veaOutbox: {
+    estimateGas: {
+      claim: jest.Mock;
+      verifySnapshot: jest.Mock;
+      startVerification: jest.Mock;
+      withdrawClaimDeposit: jest.Mock;
+    };
+    claim: jest.Mock;
+    verifySnapshot: jest.Mock;
+    startVerification: jest.Mock;
+    withdrawClaimDeposit: jest.Mock;
+    provider: {
+      getTransactionReceipt: jest.Mock;
+      getBlock: jest.Mock;
+    };
+  };

42-59: Add negative test cases for constructor.

Consider adding test cases for invalid inputs:

  1. Invalid chainId
  2. Negative epoch
  3. Invalid claim structure

Example test cases to add:

it("should throw error for invalid chainId", () => {
  expect(() => new TransactionHandler(-1, epoch, veaOutbox))
    .toThrow("Invalid chainId");
});

it("should throw error for negative epoch", () => {
  expect(() => new TransactionHandler(chainId, -1, veaOutbox))
    .toThrow("Invalid epoch");
});

it("should throw error for invalid claim structure", () => {
  const invalidClaim = { ...claim };
  delete invalidClaim.stateRoot;
  expect(() => new TransactionHandler(chainId, epoch, veaOutbox, invalidClaim))
    .toThrow("Invalid claim structure");
});

61-110: Add error handling tests for transaction status checks.

Consider adding test cases for provider errors:

  1. Network errors during receipt retrieval
  2. Block retrieval failures

Example test cases to add:

it("should handle network error during receipt retrieval", async () => {
  veaOutbox.provider.getTransactionReceipt.mockRejectedValue(
    new Error("Network error")
  );
  const emitSpy = jest.spyOn(transactionHandler.emitter, "emit");
  
  await expect(
    transactionHandler.checkTransactionPendingStatus("0x1234")
  ).rejects.toThrow("Network error");
  expect(emitSpy).toHaveBeenCalledWith(
    BotEvents.NETWORK_ERROR,
    "Failed to retrieve transaction receipt"
  );
});

it("should handle block retrieval failure", async () => {
  veaOutbox.provider.getBlock.mockRejectedValue(
    new Error("Block not found")
  );
  const emitSpy = jest.spyOn(transactionHandler.emitter, "emit");
  
  await expect(
    transactionHandler.checkTransactionPendingStatus("0x1234")
  ).rejects.toThrow("Block not found");
  expect(emitSpy).toHaveBeenCalledWith(
    BotEvents.BLOCK_RETRIEVAL_ERROR,
    "Failed to retrieve block"
  );
});

112-272: Add gas estimation error tests for transaction methods.

Consider adding test cases for gas estimation failures across all transaction methods.

Example test case to add:

describe("gas estimation errors", () => {
  it("should handle gas estimation failure in makeClaim", async () => {
    veaOutbox.estimateGas.claim.mockRejectedValue(
      new Error("Gas estimation failed")
    );
    const transactionHandler = new TransactionHandler(
      chainId,
      epoch,
      veaOutbox,
      null
    );
    const emitSpy = jest.spyOn(transactionHandler.emitter, "emit");

    await transactionHandler.makeClaim(claim.stateRoot);
    
    expect(emitSpy).toHaveBeenCalledWith(
      BotEvents.GAS_ESTIMATION_ERROR,
      "Failed to estimate gas for claim"
    );
    expect(transactionHandler.pendingTransactions.claim).toBeNull();
  });
});
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📒 Files selected for processing (8)
  • bridger-cli/src/bridger.test.ts (1 hunks)
  • bridger-cli/src/bridger.ts (1 hunks)
  • bridger-cli/src/consts/bridgeRoutes.ts (1 hunks)
  • bridger-cli/src/utils/claim.test.ts (1 hunks)
  • bridger-cli/src/utils/claim.ts (1 hunks)
  • bridger-cli/src/utils/ethers.ts (1 hunks)
  • bridger-cli/src/utils/transactionHandler.test.ts (1 hunks)
  • bridger-cli/src/utils/transactionHandler.ts (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
  • bridger-cli/src/consts/bridgeRoutes.ts
  • bridger-cli/src/bridger.test.ts
🧰 Additional context used
📓 Learnings (5)
bridger-cli/src/utils/transactionHandler.test.ts (1)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:64-77
Timestamp: 2024-12-09T09:42:34.067Z
Learning: In the `TransactionHandler` class (`bridger-cli/src/utils/transactionHandler.ts`), it's acceptable to let methods like `makeClaim` fail without additional error handling.
bridger-cli/src/bridger.ts (3)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/bridger.ts:113-118
Timestamp: 2024-12-10T04:45:36.079Z
Learning: Graceful shutdown handling in `bridger-cli` will be addressed in future PRs.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/bridger.ts:25-109
Timestamp: 2024-12-09T10:53:55.715Z
Learning: In the `bridger-cli/src/bridger.ts` file, refactoring the main loop and adding additional error handling are not needed unless deemed necessary by the developer.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/bridger.ts:1-8
Timestamp: 2024-12-09T09:48:37.012Z
Learning: The `bridger-cli` directory contains a `.env.dist` file with environment variables, which will be updated with proper documentation.
bridger-cli/src/utils/claim.ts (3)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/claim.ts:23-32
Timestamp: 2024-12-10T04:59:10.224Z
Learning: In `bridger-cli/src/utils/claim.ts`, within the `fetchClaim` function, when `claimData` is undefined, avoid initializing it with default values, as this can result in incorrect claim values and make issues harder to identify.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/claim.ts:56-69
Timestamp: 2024-12-09T10:54:57.068Z
Learning: In the TypeScript file 'bridger-cli/src/utils/claim.ts', the upper layers handle input validation for the 'hashClaim' function. Therefore, explicit input validation within 'hashClaim' is not necessary.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/claim.ts:42-51
Timestamp: 2024-12-09T10:54:09.943Z
Learning: In the `bridger-cli/src/utils/claim.ts` file, within the `fetchClaim` function, explicit error handling for provider calls and event queries is not required; errors should be allowed to propagate naturally.
bridger-cli/src/utils/ethers.ts (2)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/ethers.ts:31-37
Timestamp: 2024-12-10T04:59:11.283Z
Learning: In the project, `chainId` validation is performed in outer layers, so individual functions like `getVeaInboxProvider` do not need to handle unsupported `chainId`s.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/ethers.ts:20-82
Timestamp: 2024-12-09T10:18:00.133Z
Learning: In `bridger-cli/src/utils/ethers.ts`, prefer to keep the existing `chainId` checks without refactoring to avoid overcomplicating the code with additional conditional logic.
bridger-cli/src/utils/transactionHandler.ts (4)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:64-77
Timestamp: 2024-12-09T09:42:34.067Z
Learning: In the `TransactionHandler` class (`bridger-cli/src/utils/transactionHandler.ts`), it's acceptable to let methods like `makeClaim` fail without additional error handling.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:131-144
Timestamp: 2024-12-09T09:40:49.098Z
Learning: In the `TransactionHandler` class, it's acceptable to let methods like `withdrawClaimDeposit` fail without additional error handling.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:13-13
Timestamp: 2024-12-09T09:40:28.400Z
Learning: In `bridger-cli/src/utils/transactionHandler.ts`, the `veaOutbox` implementations differ for each chain, but a common interface should be defined for type checks to enhance type safety.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:79-101
Timestamp: 2024-12-09T09:42:51.590Z
Learning: In the `bridger-cli/src/utils/transactionHandler.ts` file, within the `TransactionHandler` class, it's acceptable to let methods like `startVerification` fail without additional error handling.
🔇 Additional comments (9)
bridger-cli/src/utils/ethers.ts (2)

1-10: LGTM! Well-organized imports.

The imports are properly organized and all dependencies are correctly specified.


20-28: 🛠️ Refactor suggestion

Handle potential undefined return in getVeaInbox.

The function might return undefined for unsupported chains as there's no default case in the switch statement.

Apply this diff to ensure consistent return behavior:

 function getVeaInbox(veaInboxAddress: string, privateKey: string, web3ProviderURL: string, chainId: number) {
   switch (chainId) {
     case 11155111:
       return VeaInboxArbToEth__factory.connect(veaInboxAddress, getWallet(privateKey, web3ProviderURL));
     case 10200:
       return VeaInboxArbToGnosis__factory.connect(veaInboxAddress, getWallet(privateKey, web3ProviderURL));
+    default:
+      throw new Error(`Unsupported chainId: ${chainId}`);
   }
 }

Likely invalid or redundant comment.

bridger-cli/src/utils/claim.ts (4)

1-13: Well-structured type definition and imports!

The ClaimStruct type is well-defined with proper TypeScript syntax for Ethereum addresses and includes all necessary fields for claim management.


15-31: Excellent function documentation!

The JSDoc documentation is comprehensive, including parameter descriptions and example usage. The function signature is well-defined with proper types and default values.


34-70: Robust claim fetching implementation!

The implementation correctly handles various claim states and follows the established pattern of not initializing claimData with default values to avoid masking potential issues.


72-95: Clean and efficient hash implementation!

The function correctly uses solidityPackedKeccak256 with proper parameter ordering and types. As per established patterns, input validation is handled by upper layers.

bridger-cli/src/bridger.ts (1)

1-19: Well-organized imports and function declaration!

The imports are properly organized, and the watch function is well-designed with appropriate default parameters and event emitter integration.

bridger-cli/src/utils/transactionHandler.ts (2)

1-52: Well-structured class with clear interface definition!

The code demonstrates good organization with a clear interface definition and comprehensive documentation. The class structure is well-designed with proper property initialization.


78-154: Well-implemented transaction methods!

The transaction methods are properly implemented with:

  • Consistent event emission
  • Proper gas estimation
  • Clean transaction handling
  • Appropriate status checking

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Quality Gate Failed Quality Gate failed

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1 Security Hotspot

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Actionable comments posted: 0

🧹 Nitpick comments (3)
bridger-cli/src/utils/transactionHandler.ts (3)

26-29: Fix incorrect example in JSDoc documentation

The example shows a non-existent method sendTransaction. Update it to show a real method like makeClaim.

 * @example
-* const txHandler = new TransactionHandler(11155111, 240752, veaOutbox, claim);
-* txHandler.sendTransaction(txData);
+* const txHandler = new TransactionHandler(11155111, 240752, veaOutbox, claim);
+* await txHandler.makeClaim(stateRoot);

46-46: Fix typo in constructor parameter name

The parameter emiitter has a typo (double 'i').

-constructor(chainId: number, epoch: number, veaOutbox: any, claim?: ClaimStruct, emiitter?: EventEmitter) {
+constructor(chainId: number, epoch: number, veaOutbox: any, claim?: ClaimStruct, emitter?: EventEmitter) {

85-89: Consider potential gas estimation race conditions

The pattern of estimating gas and then using it in a subsequent transaction could lead to race conditions if the blockchain state changes between the two calls. Consider adding a buffer to the estimated gas to handle slight variations.

Example for the claim method:

 const estimateGas = await this.veaOutbox.estimateGas.claim(this.epoch, stateRoot, { value: deposit });
 const claimTransaction = await this.veaOutbox.claim(this.epoch, stateRoot, {
   value: deposit,
-  gasLimit: estimateGas,
+  gasLimit: estimateGas.mul(120).div(100), // Add 20% buffer
 });

Also applies to: 111-113, 135-138, 148-151

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📒 Files selected for processing (3)
  • bridger-cli/src/utils/botEvents.ts (1 hunks)
  • bridger-cli/src/utils/logger.ts (1 hunks)
  • bridger-cli/src/utils/transactionHandler.ts (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
  • bridger-cli/src/utils/botEvents.ts
  • bridger-cli/src/utils/logger.ts
🧰 Additional context used
📓 Learnings (1)
bridger-cli/src/utils/transactionHandler.ts (4)
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:64-77
Timestamp: 2024-12-09T09:42:34.067Z
Learning: In the `TransactionHandler` class (`bridger-cli/src/utils/transactionHandler.ts`), it's acceptable to let methods like `makeClaim` fail without additional error handling.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:131-144
Timestamp: 2024-12-09T09:40:49.098Z
Learning: In the `TransactionHandler` class, it's acceptable to let methods like `withdrawClaimDeposit` fail without additional error handling.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:13-13
Timestamp: 2024-12-09T09:40:28.400Z
Learning: In `bridger-cli/src/utils/transactionHandler.ts`, the `veaOutbox` implementations differ for each chain, but a common interface should be defined for type checks to enhance type safety.
Learnt from: mani99brar
PR: kleros/vea#370
File: bridger-cli/src/utils/transactionHandler.ts:79-101
Timestamp: 2024-12-09T09:42:51.590Z
Learning: In the `bridger-cli/src/utils/transactionHandler.ts` file, within the `TransactionHandler` class, it's acceptable to let methods like `startVerification` fail without additional error handling.
🔇 Additional comments (2)
bridger-cli/src/utils/transactionHandler.ts (2)

69-75: Simplify conditional logic by removing unnecessary else branch

The else branch can be removed as the return statement in the if block already prevents execution of subsequent code.

 if (confirmations >= this.requiredConfirmations) {
   this.emitter.emit(BotEvents.TXN_FINAL, trnxHash, confirmations);
   return false;
-} else {
-  this.emitter.emit(BotEvents.TXN_NOT_FINAL, trnxHash, confirmations);
-  return true;
 }
+this.emitter.emit(BotEvents.TXN_NOT_FINAL, trnxHash, confirmations);
+return true;

31-155: Well-structured implementation with good event handling

The TransactionHandler class is well-implemented with consistent patterns across methods, good event emission for observability, and proper handling of blockchain interactions.

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