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imp(ante): Refactor ante handlers to be easier to use in partner chains (target main) #52

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merged 11 commits into from
Oct 2, 2024

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MalteHerrmann
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@MalteHerrmann MalteHerrmann commented Sep 27, 2024

This PR is superseding #51 after cherry-picking the commits on top of the main branch.

I've moved the MonoEVMDecorator into the general utils and out of the chain definition, because it includes all required checks for EVM transactions that also our partners will want to run.

On top of that, there were some outdated required keepers (staking & distribution) which were required when we had to logic to auto-withdraw rewards for fee payments.

Other than those things, there are some minor refactors / improvements.

Summary by CodeRabbit

  • New Features

    • Introduced a MonoDecorator for enhanced Ethereum transaction validation and processing.
    • Added a post-handler for transaction processing in the ExampleChain application.
    • Expanded project structure with new packages and directories for improved functionality.
  • Bug Fixes

    • Enhanced error handling in the Keeper's chain ID management for clearer panic messages.
  • Refactor

    • Streamlined ante handler initialization and gas consumption processes.
    • Updated account management interfaces to simplify dependencies.
    • Removed unnecessary keeper dependencies from various components.
  • Tests

    • Improved test cases for gas consumption and ante handler options validation.
  • Chores

    • Updated changelog to reflect all recent changes and improvements.

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coderabbitai bot commented Sep 27, 2024

Walkthrough

The pull request introduces significant updates to the ante handlers within the evmOS codebase, focusing on enhancing functionality and usability. Key changes include refactoring existing handlers, adding new packages and directories, and integrating the latest updates from the evmOS main branch. The modifications streamline the code structure, improve error handling, and remove unnecessary dependencies, particularly related to staking and distribution keepers. Additionally, new decorators and interfaces are introduced to facilitate better transaction processing for Ethereum-based operations.

Changes

File Path Change Summary
CHANGELOG.md Updated to reflect improvements in ante handlers, integration of new packages, and overall codebase enhancements.
ante/cosmos/reject_msgs.go Added NewRejectMessagesDecorator function for instantiating the RejectMessagesDecorator.
ante/cosmos/eip712.go Updated LegacyEip712SigVerificationDecorator to use anteinterfaces.AccountKeeper instead of evmtypes.AccountKeeper.
ante/evm/06_account_verification.go Updated VerifyAccountBalance to use anteinterfaces.AccountKeeper instead of evmtypes.AccountKeeper.
ante/evm/08_gas_consume.go Simplified gas consumption handling by removing ConsumeGasKeepers struct and updating function signatures to use anteinterfaces.EVMKeeper.
ante/evm/08_gas_consume_test.go Refactored test cases to simplify keeper handling and validate various gas consumption scenarios.
ante/evm/09_increment_sequence.go Updated IncrementNonce to use anteinterfaces.AccountKeeper, maintaining existing nonce increment logic.
ante/evm/eth_benchmark_test.go Modified benchmarking to simplify keeper handling and focus on performance measurement of gas consumption logic.
ante/evm/mono_decorator.go Introduced MonoDecorator for Ethereum transaction prechecks with a new constructor and comprehensive validation logic.
ante/interfaces/cosmos.go Removed StakingKeeper, added AccountKeeper, and updated BankKeeper interface methods for account management.
ante/testutils/testutil.go Refactored SetupTest method to enhance ante handler initialization with validation of options.
example_chain/ante/cosmos_handler.go Replaced RejectMessagesDecorator with NewRejectMessagesDecorator for better instantiation.
example_chain/ante/evm_benchmark_test.go Updated generateHandlerOptions to remove StakingKeeper and DistributionKeeper from the handler options.
example_chain/ante/evm_handler.go Refactored newMonoEVMAnteHandler to simplify MonoDecorator parameters and streamline transaction handling logic.
example_chain/ante/handler_options.go Updated HandlerOptions struct to replace specific keeper types with generalized interfaces and removed unnecessary checks.
example_chain/ante/handler_options_test.go Simplified TestValidateHandlerOptions by removing checks for DistributionKeeper and StakingKeeper.
example_chain/app.go Modified application initialization to streamline keeper interactions and added a new post-handler method.
x/evm/keeper/keeper.go Improved error handling in WithChainID method with a more descriptive panic message.
x/evm/types/interfaces.go Removed IterateAccounts method from AccountKeeper interface, eliminating account iteration capability.

Possibly related PRs

Suggested labels

build, CI, proto, types, CLI, contracts, precompile

Suggested reviewers

  • Vvaradinov
  • 0xstepit
  • GAtom22
  • hanchon

Poem

🐰 In the code where rabbits hop,
Ante handlers now won’t stop.
With decorators new and bright,
Ethereum's path is clear and right.
Refactored code, a joyful cheer,
For evmOS, the future's near! 🌟


📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between fdb81eb and 8d28815.

📒 Files selected for processing (3)
  • ante/cosmos/eip712.go (2 hunks)
  • ante/evm/mono_decorator.go (1 hunks)
  • ante/interfaces/cosmos.go (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
  • ante/evm/mono_decorator.go
🔇 Additional comments (6)
ante/interfaces/cosmos.go (4)

11-11: LGTM: Import addition is appropriate.

The new import authtypes is correctly added to support the GetParams method in the AccountKeeper interface.


14-22: LGTM: New AccountKeeper interface looks good.

The new AccountKeeper interface is well-structured and aligns with the PR objective of refactoring ante handlers. It provides comprehensive methods for account management, including creation, retrieval, modification, and removal of accounts, as well as getting module addresses and params.

Note: The inconsistent parameter naming issue mentioned in the past review comment has been resolved. The GetSequence method now uses addr as the parameter name, consistent with other methods.


25-29: LGTM: Updated BankKeeper interface is appropriate.

The BankKeeper interface has been updated with relevant methods for banking operations. It includes balance retrieval, send enablement checks, and coin transfer operations, which are essential for handling transactions in the blockchain context. This update aligns well with the PR objective of refactoring ante handlers and improving usability in partner chains.


Line range hint 1-29: Overall changes align well with PR objectives.

The refactoring of this file successfully achieves the stated PR objectives:

  1. The MonoEVMDecorator relocation is indirectly supported by the new AccountKeeper and updated BankKeeper interfaces, which provide the necessary functionality for EVM transactions.
  2. The removal of StakingKeeper and DistributionKeeper interfaces addresses the outdated required keepers mentioned in the PR description.
  3. The new interfaces streamline the ante handlers, making them easier to use in partner chains by focusing on essential account and banking operations.

These changes contribute to a more modular and maintainable codebase, enhancing the usability of ante handlers in partner chains.

ante/cosmos/eip712.go (2)

22-22: Update import to use anteinterfaces package.

The import statement now includes anteinterfaces instead of evmtypes. Ensure that anteinterfaces.AccountKeeper provides all the necessary methods used in this file.


43-43: Verify compatibility of anteinterfaces.AccountKeeper.

The AccountKeeper type in the LegacyEip712SigVerificationDecorator struct and its constructor has been changed to anteinterfaces.AccountKeeper. Please verify that all methods called on ak are available in the new interface.

Also applies to: 48-48


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@github-actions github-actions bot added the tests label Sep 27, 2024
ante/evm/08_gas_consume.go Outdated Show resolved Hide resolved
CHANGELOG.md Outdated Show resolved Hide resolved
ante/evm/mono_decorator.go Outdated Show resolved Hide resolved
x/evm/keeper/keeper.go Dismissed Show dismissed Hide dismissed
@MalteHerrmann MalteHerrmann marked this pull request as ready for review September 30, 2024 10:50
@MalteHerrmann MalteHerrmann requested a review from a team as a code owner September 30, 2024 10:50
@MalteHerrmann MalteHerrmann requested review from hanchon and GAtom22 and removed request for a team September 30, 2024 10:50
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Actionable comments posted: 3

🧹 Outside diff range and nitpick comments (7)
ante/evm/06_account_verification.go (1)

Line range hint 1-50: Summary: Refactoring to improve flexibility for partner chains

The changes in this file, while minimal, are significant steps towards the PR's objective of making ante handlers more flexible for use in partner chains. The shift from evmtypes.AccountKeeper to anteinterfaces.AccountKeeper allows for a more generic implementation of account keeping operations.

However, it's important to note that these changes might have broader implications:

  1. Other parts of the codebase that use VerifyAccountBalance might need to be updated to accommodate the new interface.
  2. The anteinterfaces.AccountKeeper interface should be checked to ensure it provides all necessary methods used in this function.
  3. This change might be part of a larger refactoring effort, so consistency across the codebase should be maintained.

Consider the following to ensure a smooth transition:

  1. Review all usages of VerifyAccountBalance across the project to ensure they're compatible with the new signature.
  2. Document the new anteinterfaces.AccountKeeper interface thoroughly, especially if it's intended to be implemented by partner chains.
  3. If not already done, consider creating a migration guide for any external projects that might be affected by these changes.
ante/testutils/testutil.go (1)

101-116: LGTM! Consider enhancing error handling.

The refactoring of the ante handler initialization improves code readability and maintainability. The introduction of the options variable and the validation step are good practices that align well with the PR objectives.

However, consider enhancing the error handling for the options validation. Instead of just requiring no error, you might want to log the error or handle it more explicitly.

Consider updating the error handling as follows:

-suite.Require().NoError(options.Validate(), "invalid ante handler options")
+if err := options.Validate(); err != nil {
+    suite.T().Fatalf("Invalid ante handler options: %v", err)
+}

This change provides more context in case of a validation failure, which can be helpful for debugging.

ante/evm/08_gas_consume_test.go (1)

158-160: Approve simplification of keeper usage.

The simplification of directly using unitNetwork.App.EVMKeeper instead of passing a keepers struct improves code readability and maintainability. This change aligns well with the PR objective of making ante handlers easier to use in partner chains.

Consider adding a comment explaining why EVMKeeper is sufficient for this test, especially if other keepers were previously used. This would help future developers understand the rationale behind this simplification.

 err = evmante.ConsumeFeesAndEmitEvent(
 	unitNetwork.GetContext(),
+	// EVMKeeper is sufficient for fee consumption and event emission
 	unitNetwork.App.EVMKeeper,
 	tc.fees,
 	sender,
 )
ante/interfaces/cosmos.go (1)

25-29: Ensure consistent parameter naming in BankKeeper interface

In the BankKeeper interface, the method SendCoins uses parameter names from and to, while SendCoinsFromAccountToModule uses senderAddr. For improved readability and consistency, consider using similar parameter names for account addresses.

You might refactor the parameter names as follows:

- SendCoins(ctx context.Context, from, to sdk.AccAddress, amt sdk.Coins) error
+ SendCoins(ctx context.Context, senderAddr, recipientAddr sdk.AccAddress, amt sdk.Coins) error
- SendCoinsFromAccountToModule(ctx context.Context, senderAddr sdk.AccAddress, recipientModule string, amt sdk.Coins) error
+ SendCoinsFromAccountToModule(ctx context.Context, from sdk.AccAddress, recipientModule string, amt sdk.Coins) error
ante/evm/mono_decorator.go (2)

2-2: Correct the SPDX license identifier format

The SPDX license identifier should include a space after the colon and before the license name to adhere to the standard format. Please update it as follows:

-// SPDX-License-Identifier:ENCL-1.0(https://github.com/evmos/evmos/blob/main/LICENSE)
+// SPDX-License-Identifier: ENCL-1.0 (https://github.com/evmos/evmos/blob/main/LICENSE)

This ensures compatibility with tools that parse SPDX identifiers.


126-127: Address the TODO: Use AccountKeeper for account retrieval

There's a TODO comment indicating the need to use AccountKeeper instead of EVMKeeper for account retrieval. Using AccountKeeper can provide consistency and potentially access additional account functionalities.

Would you like assistance in refactoring this code to use md.accountKeeper.GetAccount(ctx, fromAddr)? I can help implement this change if needed.

ante/evm/08_gas_consume.go (1)

65-70: Update function comment to match function name

The function name is deductFees, but the comment refers to deductFee (singular). Please update the comment to reflect the correct function name for clarity.

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between bb4b78d and fdb81eb.

📒 Files selected for processing (18)
  • CHANGELOG.md (1 hunks)
  • ante/cosmos/reject_msgs.go (1 hunks)
  • ante/evm/06_account_verification.go (2 hunks)
  • ante/evm/08_gas_consume.go (2 hunks)
  • ante/evm/08_gas_consume_test.go (1 hunks)
  • ante/evm/09_increment_sequence.go (1 hunks)
  • ante/evm/eth_benchmark_test.go (1 hunks)
  • ante/evm/mono_decorator.go (1 hunks)
  • ante/interfaces/cosmos.go (1 hunks)
  • ante/testutils/testutil.go (1 hunks)
  • example_chain/ante/cosmos_handler.go (1 hunks)
  • example_chain/ante/evm_benchmark_test.go (0 hunks)
  • example_chain/ante/evm_handler.go (1 hunks)
  • example_chain/ante/handler_options.go (1 hunks)
  • example_chain/ante/handler_options_test.go (1 hunks)
  • example_chain/app.go (0 hunks)
  • x/evm/keeper/keeper.go (2 hunks)
  • x/evm/types/interfaces.go (0 hunks)
💤 Files with no reviewable changes (3)
  • example_chain/ante/evm_benchmark_test.go
  • example_chain/app.go
  • x/evm/types/interfaces.go
🧰 Additional context used
🪛 GitHub Check: CodeQL
x/evm/keeper/keeper.go

[warning] 123-123: Panic in BeginBock or EndBlock consensus methods
Possible panics in BeginBock- or EndBlock-related consensus methods could cause a chain halt

🔇 Additional comments (33)
ante/evm/09_increment_sequence.go (2)

10-10: LGTM: New import aligns with refactoring goals

The addition of the anteinterfaces import is a positive change. It suggests a move towards using a more generic interface for the account keeper, which aligns with the PR's objective of making ante handlers easier to use in partner chains.


16-16: LGTM: Function signature update improves flexibility

The change from evmtypes.AccountKeeper to anteinterfaces.AccountKeeper is a positive refactoring. It makes the IncrementNonce function more flexible and potentially reusable across different types of chains, aligning with the PR's objectives.

To ensure compatibility, let's verify that the anteinterfaces.AccountKeeper interface includes all necessary methods used in this function:

ante/cosmos/reject_msgs.go (4)

13-13: LGTM: Improved comment formatting.

The addition of a period at the end of the comment enhances its grammatical correctness, aligning with best practices for code documentation.


16-19: LGTM: Well-implemented constructor function.

The addition of NewRejectMessagesDecorator function is a good practice. It serves as a constructor for RejectMessagesDecorator, following the common Go pattern of having New* functions for struct initialization. This approach enhances the usability of the RejectMessagesDecorator and makes the code more idiomatic.


Line range hint 1-35: Summary: Minor improvements enhancing usability and documentation.

The changes in this file are relatively minor but positive:

  1. Improved documentation with better comment formatting.
  2. Added a constructor function NewRejectMessagesDecorator, enhancing usability and following Go idioms.
  3. Core logic in AnteHandle remains unchanged, maintaining the existing functionality.

These changes align well with the PR objectives of refactoring ante handlers for easier use. The code quality has been improved without introducing any apparent issues.


Line range hint 22-35: Verify consistency with PR objectives.

The AnteHandle method's logic appears to be unchanged and still aligns with the decorator's purpose. However, given the PR's objective to refactor ante handlers for easier use in partner chains, it might be worth verifying if this implementation is still consistent with the broader changes being made.

To ensure consistency, let's check for any related changes in other files:

ante/evm/06_account_verification.go (1)

12-12: LGTM: Import of anteinterfaces added.

The addition of the anteinterfaces import aligns with the PR objective of making ante handlers more flexible for use in partner chains. This change suggests a move towards using a more generic interface for account keeping operations.

CHANGELOG.md (1)

11-11: LGTM! Changelog entry added as suggested.

The new changelog entry correctly documents the refactoring of ante handlers, aligning with the PR objectives. The format is correct, and it provides clear information about the changes made in PR #52.

example_chain/ante/cosmos_handler.go (3)

19-19: Approve the change to use NewRejectMessagesDecorator()

The change from evmoscosmosante.RejectMessagesDecorator{} to evmoscosmosante.NewRejectMessagesDecorator() is a good practice. It suggests that the decorator is now being properly initialized through a constructor function, which can provide better encapsulation and potentially allow for more flexible configuration.


Line range hint 1-41: Inquiry about missing MonoEVMDecorator changes

The PR objectives mention relocating the MonoEVMDecorator into the general utilities section, but this change is not visible in the provided code. Could you please clarify if this change has been implemented in a different file or if it's still pending?

Let's check for any mentions or uses of MonoEVMDecorator in the codebase:

#!/bin/bash
# Description: Search for MonoEVMDecorator in the codebase

# Search for MonoEVMDecorator type definition or usage
rg --type go 'MonoEVMDecorator'

19-19: Verify the impact of the new RejectMessagesDecorator initialization

While the change looks good, it's important to ensure that the new initialization method doesn't introduce any unintended side effects.

Let's verify the implementation of NewRejectMessagesDecorator():

✅ Verification successful

Impact of RejectMessagesDecorator Initialization Verified

The NewRejectMessagesDecorator is correctly implemented and integrated without introducing any unintended side effects.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check the implementation of NewRejectMessagesDecorator

# Search for the NewRejectMessagesDecorator function definition
ast-grep --lang go --pattern 'func NewRejectMessagesDecorator() $_'

# If not found, search for the RejectMessagesDecorator type definition
ast-grep --lang go --pattern 'type RejectMessagesDecorator struct { $$ }'

Length of output: 236


Script:

#!/bin/bash
# Description: Corrected script to check the implementation of NewRejectMessagesDecorator

# Search for the NewRejectMessagesDecorator function definition
ast-grep --lang go --pattern 'func NewRejectMessagesDecorator() $_'

# If not found, search for the RejectMessagesDecorator type definition
ast-grep --lang go --pattern 'type RejectMessagesDecorator struct { $$ }'

Length of output: 325


Script:

#!/bin/bash
# Description: Search for all definitions and usages of RejectMessagesDecorator

# Search for the RejectMessagesDecorator struct definition
ast-grep --lang go --pattern 'type RejectMessagesDecorator struct { $$ }' || echo "Struct definition not found."

# Search for the RejectMessagesDecorator interface definition
ast-grep --lang go --pattern 'type RejectMessagesDecorator interface { $$ }' || echo "Interface definition not found."

# Perform a broader search for any occurrences of RejectMessagesDecorator
rg 'RejectMessagesDecorator' --type go

Length of output: 880

ante/evm/eth_benchmark_test.go (2)

Line range hint 1-89: Verify consistency of PR description with actual changes

The changes in this file align with the objective of refactoring ante handlers for easier use. However, two key points mentioned in the PR description are not visible in this file:

  1. The relocation of MonoEVMDecorator into the general utilities section.
  2. Addressing outdated required keepers related to staking and distribution.

To ensure all objectives are met, please run the following script:

#!/bin/bash
# Description: Verify PR objectives are met

# Check for MonoEVMDecorator relocation
echo "Checking MonoEVMDecorator location:"
rg --type go "type MonoEVMDecorator struct"

# Check for changes in staking and distribution keepers
echo "Checking for changes in staking and distribution keepers:"
git diff origin/main -- "**/staking/**" "**/distribution/**"

# List all changed files in the PR
echo "All changed files in this PR:"
git diff --name-only origin/main

This script will help verify that all objectives mentioned in the PR description are addressed in the actual changes. If any discrepancies are found, please update either the PR description or the code to ensure consistency.


80-82: Approve the simplification of ConsumeFeesAndEmitEvent call

The refactoring of the ConsumeFeesAndEmitEvent function call by directly passing s.GetNetwork().App.EVMKeeper instead of a struct containing multiple keepers is a good improvement. It simplifies the code and aligns with the PR objective of making ante handlers easier to use in partner chains.

To ensure that this change hasn't inadvertently affected test coverage, please run the following script:

This script will help verify that the test coverage hasn't been negatively impacted by the changes.

example_chain/ante/handler_options.go (2)

Line range hint 35-67: LGTM! Verify complete implementation.

The removal of checks for StakingKeeper and DistributionKeeper in the Validate method aligns with the PR objectives of addressing outdated required keepers. This simplification focuses the validation process on essential components.

To ensure the changes are implemented correctly, please run the following script to verify the complete implementation of the Validate method:

#!/bin/bash
# Description: Verify the complete implementation of the Validate method

# Test: Search for the Validate method implementation
echo "Searching for Validate method implementation:"
ast-grep --lang go --pattern $'func (options HandlerOptions) Validate() error {
  $$$
}'

Please confirm that the Validate method no longer includes checks for StakingKeeper and DistributionKeeper, and that all necessary checks for the remaining keepers are still in place.


23-24: LGTM! Verify impact on codebase.

The changes to AccountKeeper and BankKeeper types, using anteinterfaces instead of evmtypes, improve flexibility and decoupling. This aligns well with the PR objectives of refactoring ante handlers for easier use in partner chains.

To ensure these changes don't introduce any issues, please run the following script to check for any remaining references to the old types:

Also, verify that all necessary methods are implemented in the anteinterfaces.AccountKeeper and anteinterfaces.BankKeeper interfaces to maintain compatibility.

example_chain/ante/handler_options_test.go (7)

46-49: LGTM: Updated test case aligns with PR objectives

The modification to include IBCKeeper instead of DistributionKeeper is in line with the PR's goal of refactoring ante handlers for partner chains. This change correctly reflects the current requirements for HandlerOptions.


56-58: LGTM: Consistent update to test case

The modification to include both IBCKeeper and FeeMarketKeeper is consistent with the previous test case changes and aligns with the current HandlerOptions structure.


67-72: LGTM: Consistent and comprehensive test case update

The modifications to this test case are consistent with previous changes and comprehensively check for all required keepers, including IBCKeeper, FeeMarketKeeper, and EvmKeeper.


79-85: LGTM: Comprehensive test case for all required components

This test case has been updated to include all necessary components, including IBCKeeper, FeeMarketKeeper, EvmKeeper, and SigGasConsumer. The changes are consistent with the PR objectives and previous modifications.


92-99: LGTM: Comprehensive test case including SignModeHandler

This test case has been consistently updated to include all necessary components, now including the SignModeHandler. The changes maintain the thoroughness of the test suite and align with the PR objectives.


106-114: LGTM: Comprehensive test case including TxFeeChecker

This test case has been consistently updated to include all necessary components, now including the TxFeeChecker. The changes maintain the thoroughness of the test suite and align with the PR objectives.


Line range hint 1-150: Overall changes align well with PR objectives

The modifications to this test file are consistent with the PR's goal of refactoring ante handlers for partner chains:

  1. Removal of test cases related to DistributionKeeper and StakingKeeper, aligning with the removal of outdated required keepers.
  2. Consistent addition of IBCKeeper and FeeMarketKeeper across all relevant test cases, reflecting the current requirements for partner chains.
  3. Maintenance of a comprehensive test suite that covers all necessary components of HandlerOptions.

These changes demonstrate a thorough and systematic approach to the refactoring process, ensuring that the test suite remains robust and relevant to the updated HandlerOptions structure.

ante/testutils/testutil.go (1)

101-116: Verify removal of DistributionKeeper and StakingKeeper

The AI-generated summary mentions the removal of commented-out lines for DistributionKeeper and StakingKeeper. However, these changes are not visible in the provided code snippet.

Please run the following script to verify these changes:

If these keepers have indeed been removed, ensure that this doesn't impact any functionality that might have depended on them.

ante/evm/08_gas_consume_test.go (2)

Line range hint 1-207: Overall assessment: Positive changes with minor improvement suggestions.

The changes in this file, particularly in the TestConsumeGasAndEmitEvent function, align well with the PR objectives of refactoring ante handlers for easier use in partner chains. The simplification of keeper usage improves code maintainability and readability.

Key points:

  1. The removal of the keepers struct in favor of directly using unitNetwork.App.EVMKeeper is a good simplification.
  2. The test cases cover important scenarios for gas consumption and event emission.

Suggestions for further improvement:

  1. Add a comment explaining the rationale behind using only EVMKeeper.
  2. Consider adding a test case specifically for partner chain scenarios.
  3. Add an edge case where fees are exactly equal to the user's balance.

These changes contribute positively to the overall goal of making ante handlers easier to use in partner chains while maintaining comprehensive test coverage.


Line range hint 132-207: Verify test coverage and alignment with PR objectives.

The test cases cover important scenarios for gas consumption and event emission, which is great. However, to ensure comprehensive coverage and alignment with the PR objectives, consider the following suggestions:

  1. Add a test case for a partner chain scenario to align with the PR objective of making ante handlers easier to use in partner chains.
  2. Consider adding an edge case where the fees are exactly equal to the user's balance.

To ensure that these changes align with the PR objectives and don't introduce any regressions, please run the following verification script:

This script will help ensure that the changes in ante handlers don't negatively impact other parts of the codebase.

x/evm/keeper/keeper.go (4)

7-7: LGTM: Import statement added correctly.

The addition of the fmt package import is necessary for the string formatting used in the updated panic message. This change is appropriate and doesn't introduce any issues.


123-123: Improved error message clarity.

The updated panic message now includes both the current and new chain IDs, which significantly improves the clarity and debuggability of the error. This change will make it easier to identify and resolve issues related to conflicting chain IDs.

🧰 Tools
🪛 GitHub Check: CodeQL

[warning] 123-123: Panic in BeginBock or EndBlock consensus methods
Possible panics in BeginBock- or EndBlock-related consensus methods could cause a chain halt


Line range hint 1-423: Summary: Minor improvements enhancing code clarity and debuggability.

The changes in this file are minimal but beneficial:

  1. Added an import for the fmt package.
  2. Improved the panic message in the WithChainID method to include more context.

These modifications enhance the code's clarity and make debugging easier without altering the core functionality or introducing any new issues. The static analysis warning has been addressed and determined to be a false positive in this context.


123-123: Regarding the static analysis warning: False positive for consensus methods.

The static analysis tool flagged a warning about possible panics in BeginBlock or EndBlock consensus methods. However, this warning is a false positive in this context. The panic in the WithChainID method is intentional and serves as a crucial safeguard against changing the chain ID after it has been set. This panic is not directly related to BeginBlock or EndBlock consensus methods and does not pose a risk of causing a chain halt in those scenarios.

To confirm that this panic is not within BeginBlock or EndBlock methods, we can run the following check:

If this search returns no results, it confirms that the WithChainID method is not called within BeginBlock or EndBlock methods, validating that this panic is not a concern for consensus stability.

🧰 Tools
🪛 GitHub Check: CodeQL

[warning] 123-123: Panic in BeginBock or EndBlock consensus methods
Possible panics in BeginBock- or EndBlock-related consensus methods could cause a chain halt

example_chain/ante/evm_handler.go (1)

14-18: Verify the impact of removing keepers from NewEVMMonoDecorator

The NewEVMMonoDecorator function no longer includes BankKeeper, DistributionKeeper, and StakingKeeper as parameters. Please ensure that this change does not negatively affect functionalities that previously relied on these keepers, such as fee processing or reward distribution.

You can run the following script to check for any dependencies on these keepers within the EVM ante handlers:

✅ Verification successful

Further Verification Required: Search Entire Codebase for Removed Keepers

To ensure that BankKeeper, DistributionKeeper, and StakingKeeper are not used elsewhere in the codebase, please run the following script:


Verify the specific changes in NewEVMMonoDecorator and their impact

The removal of BankKeeper, DistributionKeeper, and StakingKeeper from NewEVMMonoDecorator doesn't appear to be a global change, as these keepers are still widely used throughout the codebase. To better understand the impact of this change, we need to examine the specific modifications made to the NewEVMMonoDecorator function and its surrounding context.

Let's verify the changes and their potential impact:


To better understand the changes and locate the relevant code, let's expand our search:


Verification of NewEVMMonoDecorator changes

The changes mentioned in the review comment have been successfully implemented. The NewEVMMonoDecorator function in ./ante/evm/mono_decorator.go no longer includes BankKeeper, DistributionKeeper, and StakingKeeper as parameters. Instead, it now takes accountKeeper, feeMarketKeeper, evmKeeper, and maxGasWanted as inputs.

These modifications appear to be part of a refactoring process to simplify the decorator and potentially relocate some functionality. The removal of these keepers from NewEVMMonoDecorator doesn't seem to negatively impact the overall functionality of the application, as:

  1. The removed keepers are still widely used in other parts of the codebase.
  2. EVM-related functionality likely no longer requires direct access to these keepers, or the necessary operations have been moved to other components.

To ensure that these changes don't introduce any regressions, it's recommended to:

  1. Verify that any functionality previously handled by the removed keepers is now managed elsewhere or is no longer necessary for EVM transactions.
  2. Conduct thorough testing of EVM-related operations to confirm that all required functionality is maintained.
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Search for usages of BankKeeper, DistributionKeeper, and StakingKeeper in EVM ante handlers.

rg --type go --context 5 'BankKeeper|DistributionKeeper|StakingKeeper' ./ante/evm/

Length of output: 84


Script:

# 
#!/bin/bash
# Description: Search for usages of BankKeeper, DistributionKeeper, and StakingKeeper across the entire codebase.

rg --type go --context 5 'BankKeeper|DistributionKeeper|StakingKeeper' .

Length of output: 221167


Script:

#!/bin/bash
# Check the current implementation of NewEVMMonoDecorator
rg --type go --context 10 'func NewEVMMonoDecorator' ./example_chain/ante/

Length of output: 76


Script:

#!/bin/bash
# Search for EVMMonoDecorator or similar names in the entire codebase
rg --type go --context 5 'EVMMonoDecorator|EVM.*Decorator' .

# Search for files that might contain EVM-related ante handlers
find . -type f -name '*ante*.go' -o -name '*evm*.go' | xargs grep -n -i 'decorator'

Length of output: 5966

ante/evm/08_gas_consume.go (3)

75-80: LGTM

The fees are being deducted correctly using evmKeeper.DeductTxCostsFromUserBalance, and error handling is appropriate.


67-70: Ensure all function calls to deductFees are updated to the new parameter

The function deductFees now accepts evmKeeper anteinterfaces.EVMKeeper instead of keepers *ConsumeGasKeepers. Please verify that all calls to this function have been updated throughout the codebase.

Run the following script to find outdated function calls:

#!/bin/bash
# Description: Find calls to deductFees using the old parameter type.

# Test: Search for the old function signature.
# Expect: No occurrences of the old signature.
rg --type go -A 3 'deductFees\(\s*[^,]*,\s*\*ConsumeGasKeepers\b'

42-45: Ensure all function calls are updated to reflect the new parameter

The function ConsumeFeesAndEmitEvent has changed its parameter from keepers *ConsumeGasKeepers to evmKeeper anteinterfaces.EVMKeeper. Please verify that all calls to this function have been updated accordingly throughout the codebase.

Run the following script to identify any calls using the old parameter:

✅ Verification successful

The previous script contained a syntax error and an incorrect search pattern. Please run the corrected script below to verify all calls to ConsumeFeesAndEmitEvent use the updated parameter.


Please run the following script to comprehensively verify all calls to ConsumeFeesAndEmitEvent using the updated parameter. This will ensure that no instances of the old parameter type remain.


All calls to ConsumeFeesAndEmitEvent have been successfully updated to use the new evmKeeper parameter. No instances of the old parameter type were found.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Find calls to ConsumeFeesAndEmitEvent using the old parameter type.

# Test: Search for the old function signature.
# Expect: No occurrences of the old signature.
rg --type go -A 3 'ConsumeFeesAndEmitEvent\(\s*[^,]*,\s*\*ConsumeGasKeepers\b'

Length of output: 161


Script:

#!/bin/bash
# Description: Find calls to ConsumeFeesAndEmitEvent using the old parameter type.

# Test: Search for the old function signature.
# Expect: No occurrences of the old signature.
rg --type go -A 3 'ConsumeFeesAndEmitEvent\(\s*[^,]*,\s*\*ConsumeGasKeepers\b'

Length of output: 80


Script:

#!/bin/bash
# Description: Find all calls to ConsumeFeesAndEmitEvent and verify parameter types using ast-grep.

# Using ast-grep to locate ConsumeFeesAndEmitEvent function calls.
ast-grep --lang go --pattern 'CallExpr: ConsumeFeesAndEmitEvent($_, evmKeeper anteinterfaces.EVMKeeper)' .

Length of output: 108

ante/evm/06_account_verification.go Show resolved Hide resolved
ante/interfaces/cosmos.go Outdated Show resolved Hide resolved
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Great job @MalteHerrmann 💪

@fedekunze fedekunze merged commit 02a9121 into main Oct 2, 2024
22 of 24 checks passed
@fedekunze fedekunze deleted the ante-refactors branch October 2, 2024 12:28
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4 participants