Firehose #7
Firehose #7
Conversation
This breaks some tests and shows that we need to add calls to OnBlockStart to prevent panics.
- move some files around to keep them contained inside of the x/evm package - adding env file ignore in gitignore
- Removing tracer from the EthermintApp struct - Updating tests which referenced the tracer from the EVMKeeper - Adding InitChainer method on keeper to call when a block chain is initialized
…r from the config
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Actionable comments posted: 19
🧹 Outside diff range and nitpick comments (25)
pb/sf/ethereum/type/v2/type.go (2)
9-9: Consider using a more descriptive name and making it a constant.The variable
b0is not very descriptive. Consider renaming it to something more meaningful, likezeroBIorzeroBigInt. Additionally, since this value never changes, it would be better to declare it as a constant.Here's a suggested improvement:
-var b0 = big.NewInt(0) +const zeroBigInt = new(big.Int)Note:
new(big.Int)creates a new*big.Intinitialized to zero, which is equivalent tobig.NewInt(0).
15-17: LGTM: Time method is well-implemented. Consider a small optimization.The
Timemethod for theBlocktype is correctly implemented. It returns the block's timestamp as atime.Timeobject, which is useful for time-based operations and formatting.For a small optimization, you could consider returning the result directly:
func (b *Block) Time() time.Time { - return b.Header.Timestamp.AsTime() + return b.Header.Timestamp.AsTime() }This avoids creating an unnecessary temporary variable.
x/evm/keeper/msg_server_test.go (2)
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26-93: Consider enhancing test coverageThe
TestEthereumTxfunction is well-structured and uses table-driven tests effectively. However, consider the following suggestions to further improve the test coverage:
- Add more test cases to cover different transaction types and edge cases.
- Include assertions to verify the state changes after successful transactions (e.g., balance changes, contract deployment).
- Test with different gas prices and limits to ensure correct gas calculations.
- Consider adding a test case for transactions with access lists to fully test the
ethtypes.AccessListTxType.Would you like assistance in implementing these improvements?
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95-127: EnhanceTestUpdateParamsfunctionThe
TestUpdateParamsfunction is well-structured and covers basic scenarios. To improve its effectiveness, consider the following suggestions:
- Add more test cases with different parameter values to ensure all aspects of the params are tested.
- Include assertions to verify that the params are actually updated after a successful call.
- Test the behavior when updating individual params instead of the entire params object.
- Consider adding a test case for updating params with invalid values to ensure proper validation.
Would you like assistance in implementing these improvements?
server/config/config.go (1)
109-109: Summary: New "firehose" EVM tracer addedThe addition of the "firehose" tracer type to the
evmTracersslice is a minor change that expands the available EVM tracing options. This change appears to be safe and doesn't introduce any obvious issues in this file.To ensure completeness:
- Verify that the implementation of the "firehose" tracer exists in the codebase (as suggested in the previous comment).
- Update any relevant documentation or user guides to include information about this new tracer option.
- Consider adding a brief comment in the code explaining the purpose or use case for the "firehose" tracer, if appropriate.
x/evm/handler_test.go (1)
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107-111: Investigate potential mismatch in error descriptionThe comment suggests that the error description "insufficient balance" might be inaccurate, and "insufficient gas" could be more appropriate. This distinction is important for proper error handling and user feedback.
Consider investigating this test case further to ensure the error description accurately reflects the underlying issue. If confirmed, update the error message in the relevant part of the codebase.
x/evm/keeper/abci.go (1)
58-62: Simplify deferred function call inEndBlockThe deferred anonymous function wrapping
k.evmTracer.OnBlockEnd(nil)adds unnecessary complexity. You can simplify the code by deferring the call directly, which enhances readability.Apply this diff to simplify the code:
-if k.evmTracer != nil && k.evmTracer.OnBlockEnd != nil { - defer func() { - k.evmTracer.OnBlockEnd(nil) - }() +if k.evmTracer != nil && k.evmTracer.OnBlockEnd != nil { + defer k.evmTracer.OnBlockEnd(nil) }x/evm/keeper/keeper.go (1)
69-70: Provide a more detailed comment forevmTracerfieldThe comment
// EVM Traceris brief. To improve code readability and maintainability, consider adding a more descriptive comment explaining the purpose and usage of theevmTracerfield.For example:
// evmTracer is used for EVM transaction tracing and debugging purposes. evmTracer *tracers.Tracerx/evm/tracers/firehose_test.go (4)
39-39: Typo in test case name 'emtpy'There's a typo in the test case name: "push/pop emtpy" should be "push/pop empty".
Apply this diff to correct the typo:
-"push/pop emtpy", []actionRunner{ +"push/pop empty", []actionRunner{
85-86: Correct typo in test case name 'inexistant'The test case name "inexistant" is misspelled. It should be "inexistent" or "nonexistent".
Apply this diff to correct the typo:
-{"inexistant", 255, false, nil}, +{"inexistent", 255, false, nil},
150-150: Typo in comment: 'codde' should be 'code'In the comment at line 150, there's a typo: "codde" should be "code".
Apply this diff to correct the typo:
-// the expected fields of `types.Header` changed -// that the expected fields of `types.Header` changed +// the expected fields of `types.Header` changed. +// that the expected fields of `types.Header` changed.
355-355: Typo in error message: 'intial' should be 'initial'In the error message at line 355, "intial" should be "initial".
Apply this diff to correct the typo:
-t.Fatalf("the golden file %q does not exist, re-run with 'GOLDEN_UPDATE=true go test ./... -run %q' to generate the intial version", goldenPath, t.Name()) +t.Fatalf("the golden file %q does not exist, re-run with 'GOLDEN_UPDATE=true go test ./... -run %q' to generate the initial version", goldenPath, t.Name())x/evm/keeper/state_transition.go (1)
484-488: Add tests to ensureOnGasChangeis not called multiple timesThe TODO comment indicates a need to test that
k.evmTracer.OnGasChangeis not called multiple times. This is important to prevent inconsistencies in gas tracking and potential performance issues.Would you like assistance in generating unit tests to verify that
OnGasChangeis called exactly once per transaction? I can help create a test case to ensure the tracer behaves as expected.x/evm/statedb/statedb.go (4)
103-104: Add GoDoc comment forevmTracerfieldThe
evmTracerfield is an important addition to theStateDBstruct for tracing EVM operations. To maintain code clarity and adhere to Go documentation standards, please add a GoDoc comment explaining its purpose.Apply this diff to include the comment:
type StateDB struct { keeper Keeper + // evmTracer is used to facilitate tracing of EVM operations. evmTracer *tracing.Hooks // handle balances natively evmDenom string err error }
149-151: Add GoDoc comment forSetTracermethodThe
SetTracermethod is an exported function that allows setting the EVM tracer. Please add a GoDoc comment to explain its functionality and maintain documentation consistency.Apply this diff to include the comment:
+// SetTracer sets the EVM tracer for the StateDB. func (s *StateDB) SetTracer(tracer *tracing.Hooks) { s.evmTracer = tracer }
548-553: Remove unnecessary TODO comment inSetStorageThe comment
// TODO: should we call a tracer hook here?is unnecessary if a decision has been made. If tracing is not required here, consider removing the comment to keep the code clean.
389-389: Correct grammatical error in commentThere's a minor grammatical error in the comment. The word "fail" should be "fails" to match the singular verb form.
Apply this diff to fix the comment:
// ExecuteNativeAction executes native action in isolate, -// the writes will be reverted when either the native action itself fail +// the writes will be reverted when either the native action itself fails // or the wrapping message call reverted.x/evm/statedb/statedb_test.go (1)
52-53: Address the TODO: Add tests with the TracerThere's a TODO comment indicating that tests need to be added for the Tracer functionality. Implementing these tests will enhance test coverage and ensure the Tracer works as expected.
Would you like assistance in creating these tests or opening a GitHub issue to track this task?
x/evm/keeper/grpc_query_test.go (3)
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1046-1050: Ensure full response validation in test assertionsSlicing
res.Datato the first 150 characters may cause the test to miss critical differences in the response beyond this point. This could lead to false positives where discrepancies are not detected. Consider comparing the fullres.Dataor using a method that focuses on the essential parts of the response relevant to the test case.
1203-1204: Define large numeric literals as constants for clarityThe hardcoded value
1000000000000000000may reduce readability and make the code harder to maintain. Consider defining this value as a constant with a descriptive name to enhance clarity.Apply this change:
+ const testBalance = 1000000000000000000 + err := suite.App.EvmKeeper.SetBalance(suite.Ctx, suite.Address, big.NewInt(testBalance), types.DefaultEVMDenom) - err := suite.App.EvmKeeper.SetBalance(suite.Ctx, suite.Address, big.NewInt(1000000000000000000), types.DefaultEVMDenom)
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1224-1228: Use comprehensive assertion methods for larger responsesBy slicing
res.Datato 150 characters, the test might not detect important differences in the remainder of the data. This could cause the test to pass when it should fail. It's better to use assertions that check the entire response or key elements that are critical to the test's purpose.app/app.go (1)
1117-1150: Address the TODO comments inTmBlockHeaderToEVMThe function
TmBlockHeaderToEVMcontains several// todocomments indicating incomplete implementations or areas requiring verification. Specifically, the fieldsNonce,MixDigest,UncleHash,Bloom,Difficulty,Extra, andBaseFeehave placeholder values or comments suggesting further action. Before merging, please address these TODOs to ensure the function is fully implemented and accurate. If certain fields are not applicable to Injective, consider providing explanations or removing them to avoid confusion.Would you like assistance in implementing these fields or creating GitHub issues to track these tasks?
x/evm/tracers/firehose.go (3)
1751-1752: Nitpick: Grammatical error in panic messageIn the
gasChangeReasonFromChainfunction, there's a grammatical error in the panic message:
- "check vm.GasChangeReason so see to which constant it refers to" should be "check vm.GasChangeReason to see which constant it refers to".
Apply the following diff to correct the message:
-panic(fmt.Errorf("unknown tracer gas change reason value '%d', check vm.GasChangeReason so see to which constant it refers to", reason)) +panic(fmt.Errorf("unknown tracer gas change reason value '%d', check vm.GasChangeReason to see which constant it refers to", reason))
2096-2097: Nitpick: Regular expression pattern may need clarificationIn the declaration of
sanitizeRegexp, the regular expression pattern[\t( ){2,}]+might be unclear to future maintainers. It's helpful to add a comment explaining the purpose of this pattern for better readability.Consider adding a comment to explain the regular expression:
var sanitizeRegexp = regexp.MustCompile(`[\t( ){2,}]+`) // Removes multiple spaces and tabs
976-985: Issue: Commented-out code ingetExecutedCodefunctionThere is a block of commented-out code in the
getExecutedCodefunction. Keeping outdated or dead code can clutter the codebase and make maintenance harder.Consider removing the commented-out code if it's no longer needed, or explain why it's kept.
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
⛔ Files ignored due to path filters (2)
go.sumis excluded by!**/*.sumpb/sf/ethereum/type/v2/type.pb.gois excluded by!**/*.pb.go
📒 Files selected for processing (23)
- .gitignore (1 hunks)
- app/app.go (4 hunks)
- go.mod (6 hunks)
- pb/sf/ethereum/type/v2/type.go (1 hunks)
- server/config/config.go (1 hunks)
- server/config/toml.go (1 hunks)
- x/evm/genesis.go (1 hunks)
- x/evm/handler_test.go (2 hunks)
- x/evm/keeper/abci.go (3 hunks)
- x/evm/keeper/config.go (2 hunks)
- x/evm/keeper/grpc_query_test.go (3 hunks)
- x/evm/keeper/integration_test.go (2 hunks)
- x/evm/keeper/keeper.go (4 hunks)
- x/evm/keeper/msg_server_test.go (1 hunks)
- x/evm/keeper/state_transition.go (7 hunks)
- x/evm/keeper/state_transition_test.go (4 hunks)
- x/evm/statedb/statedb.go (5 hunks)
- x/evm/statedb/statedb_test.go (1 hunks)
- x/evm/tracers/firehose.go (1 hunks)
- x/evm/tracers/firehose_test.go (1 hunks)
- x/evm/tracers/testdata/firehose/reorder-ordinals-empty.golden.json (1 hunks)
- x/evm/types/tracer.go (4 hunks)
- x/evm/types/utils.go (1 hunks)
✅ Files skipped from review due to trivial changes (3)
- .gitignore
- x/evm/genesis.go
- x/evm/types/utils.go
🔇 Additional comments (42)
pb/sf/ethereum/type/v2/type.go (3)
1-7: LGTM: Package declaration and imports are appropriate.The package name
pbethis concise and descriptive. The imported packages are relevant to the implemented functionalities, and there are no unused imports.
11-13: LGTM: PreviousID method is well-implemented.The
PreviousIDmethod for theBlocktype is correctly implemented. It returns the parent block's hash as a hexadecimal string, which is a common representation in Ethereum. The method name is clear and descriptive.
19-27: 🛠️ Refactor suggestionConsider a more descriptive method name and potential performance optimization.
The
Nativemethod for theBigInttype is implemented correctly, but there are a few points to consider:
The method name
Nativeis not very descriptive. Consider renaming it to something likeToBigIntorAsBigIntto better reflect its purpose.The nil check is a good practice for avoiding panics.
The method creates a new
big.Intfor each call, which could be inefficient if called frequently. If this method is called often, you might want to consider caching the result.Here's a suggested improvement:
func (m *BigInt) ToBigInt() *big.Int { if m == nil { return zeroBigInt } if m.bigInt == nil { m.bigInt = new(big.Int).SetBytes(m.Bytes) } return m.bigInt }This implementation caches the
big.Intvalue, reducing allocations for repeated calls. Note that this assumes you add abigInt *big.Intfield to yourBigIntstruct.To assess the impact of this change, we should check how frequently this method is called in the codebase. Here's a script to help with that:
Please review the results of this script to determine if the optimization is necessary.
✅ Verification successful
Verified: The
Nativemethod is only defined and not invoked elsewhere.The performance optimization suggestion is not necessary at this time since there are no external calls to
Native. However, renaming the method toToBigIntorAsBigIntis still recommended for improved clarity.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for calls to the Native method on BigInt rg --type go 'BigInt.*Native\(\)'Length of output: 103
x/evm/keeper/msg_server_test.go (3)
81-81: Improved code readabilityThe addition of this empty line enhances the readability of the test case by clearly separating the setup phase (
tc.malleate()) from the execution phase. This is a good practice in test writing.
87-87: Enhanced test structureThe addition of this empty line improves the test structure by clearly separating the error handling block from the subsequent assertions. This enhances the readability and maintainability of the test case.
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1-127: Overall assessment: Good changes with room for improvementThe changes to this file improve the readability and organization of the test suite. The use of table-driven tests and clear separation of test phases are commendable. However, there are opportunities to enhance the test coverage and assertions in both
TestEthereumTxandTestUpdateParamsfunctions.Consider implementing the suggested improvements to make the test suite more robust and comprehensive. This will help ensure the reliability and correctness of the EVM keeper's message server implementation.
x/evm/keeper/integration_test.go (2)
4-4: LGTM: New import added correctlyThe new import for
srvflagsis correctly added and necessary for usingsrvflags.EVMTracerin thesetupTestfunction.
140-143: LGTM: EVM Tracer configuration added to test setupThe addition of
srvflags.EVMTracerwith the valueevmtypes.Firehoseenhances the test setup by configuring the EVM tracer for integration tests. This change is consistent with the new import and the overall purpose of the integration tests.To ensure this change doesn't have unintended consequences, please verify:
- That the Firehose tracer is properly initialized and used in the relevant EVM transaction processing code.
- That this change doesn't affect other test suites or require additional configuration changes elsewhere in the codebase.
You can use the following script to check for other occurrences of EVM tracer configuration:
✅ Verification successful
Verified: No Additional EVM Tracer Configurations Found
The verification confirms that the
srvflags.EVMTracer: evmtypes.Firehoseconfiguration is only present inx/evm/keeper/integration_test.go. There are no other occurrences in the codebase, ensuring that this change is isolated to the test setup and does not impact other areas.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for other occurrences of EVM tracer configuration rg --type go 'EVMTracer.*Firehose'Length of output: 116
x/evm/tracers/testdata/firehose/reorder-ordinals-empty.golden.json (5)
1-23: Block header structure looks good.The block header section is well-structured and contains all the necessary fields for a blockchain block. The use of placeholder values (e.g., for
parentHashandstateRoot) is appropriate for a test fixture.
24-55: Transaction trace structure is correct with proper ordinal sequencing.The first transaction trace is well-structured and includes all necessary fields. The
beginOrdinalandendOrdinalfields are correctly implemented, providing a clear sequence of events within the transaction. This is crucial for the Firehose system to maintain the correct order of operations.
120-122: Version field is correctly specified.The
verfield is properly set to 4, which indicates the version of the data format used in this file. This is important for maintaining compatibility and interpreting the data correctly.
1-122: Well-structured test fixture for Firehose ordinal reordering.This JSON file serves as a comprehensive test fixture for the Firehose system, specifically focusing on the reordering of ordinals across multiple transactions and their associated calls. The file structure accurately represents a blockchain block with detailed transaction traces.
Key points:
- The block header contains all necessary fields with appropriate placeholder values.
- Transaction traces are well-structured with correct ordinal sequencing.
- The
beginOrdinalandendOrdinalfields provide a clear sequence of events across all transactions and calls.- The version field (
ver: 4) is correctly specified.This fixture will be valuable for testing the Firehose system's ability to maintain the correct order of operations when processing blockchain data.
56-119: Transaction traces maintain consistency with proper ordinal sequencing.The second and third transaction traces maintain the correct structure and ordinal sequencing. The
beginOrdinalandendOrdinalfields continue sequentially across all transactions, which is crucial for the Firehose system's reordering functionality.Note: The
indexfield is present in the second and third transactions but missing in the first one. While this might be intentional for testing purposes, it's worth confirming if this inconsistency is expected.To verify the consistency of the
indexfield across all transactions in the codebase, you can run the following script:✅ Verification successful
All transaction traces include the
indexfield consistently.All transaction traces in
x/evm/tracers/testdata/firehose/reorder-ordinals-empty.golden.jsoncontain theindexfield, ensuring uniformity across all transactions.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check for consistency of the 'index' field in transaction traces # Test: Search for transaction traces and check if they all have the 'index' field rg --type json '"transactionTraces"' -A 20 | rg '"index":'Length of output: 60
Script:
#!/bin/bash # Description: Verify that all transaction traces have an 'index' field # Search for all occurrences of 'transactionTraces' and check for the presence of 'index' within them rg --type json '"transactionTraces"' -A 50 | rg '"index":' || echo "No inconsistencies found: All transaction traces have the 'index' field."Length of output: 234
server/config/toml.go (1)
28-28: LGTM. Verify implementation of the new tracer type.The addition of 'firehose' as a valid tracer type is approved. This expands the options available for the EVM tracer configuration.
To ensure this change is fully implemented, please run the following verification:
Please ensure that the 'firehose' tracer type is properly implemented in the EVM code and that any necessary documentation has been updated.
✅ Verification successful
Verified: 'firehose' tracer type is properly implemented.
The
firehosetracer type has been successfully integrated into the codebase, as evidenced by its presence in multiple implementation and configuration files.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the implementation of the 'firehose' tracer type # Test 1: Check if 'firehose' is handled in the tracer implementation echo "Checking for 'firehose' in tracer implementation:" rg --type go -i 'case\s+["\']firehose["\']\s*:' # Test 2: Look for any new files or functions related to 'firehose' tracer echo "Searching for 'firehose' related files or functions:" rg --type go -i 'firehose' # Test 3: Check for updates in documentation or comments related to tracers echo "Checking for updates in documentation or comments:" rg --type go -i 'tracer.*firehose'Length of output: 209
Script:
#!/bin/bash # Description: Verify the implementation of the 'firehose' tracer type # Test 1: Check if 'firehose' is handled in the tracer implementation echo "Checking for 'firehose' in tracer implementation:" rg --type go -i 'case\s+["'"'"']firehose["'"'"']\s*:' # Test 2: Look for any new files or functions related to 'firehose' tracer echo "Searching for 'firehose' related files or functions:" rg --type go -i 'firehose' # Test 3: Check for updates in documentation or comments related to tracers echo "Checking for updates in documentation or comments:" rg --type go -i 'tracer.*firehose'Length of output: 24040
server/config/config.go (2)
109-109: Verify implementation of the "firehose" tracerWhile adding the new "firehose" tracer type to the
evmTracersslice is straightforward, it's important to ensure that the implementation for this tracer type exists in the codebase.Let's check for the implementation of the "firehose" tracer:
#!/bin/bash # Search for the implementation of the "firehose" tracer rg --type go "func.*firehose.*Tracer"If the implementation is not found, please ensure that it's added in the appropriate location before merging this change.
109-109: New EVM tracer type added: "firehose"The
evmTracersslice has been updated to include a new tracer type "firehose". This addition expands the available options for EVM tracing.To ensure this change is properly integrated, let's verify if any other parts of the code need to be updated:
✅ Verification successful
Firehose tracer type is properly integrated
The new tracer type "firehose" has been added to the
evmTracersslice and is consistently used in other parts of the codebase, includingfirehose.goand relevant test files. No further updates are necessary.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Check if the new tracer type is used or validated elsewhere in the codebase rg --type go "firehose.*tracer" --ignore-file server/config/config.goLength of output: 133
Script:
#!/bin/bash # Check if the new tracer type "firehose" is used or validated elsewhere in the codebase rg --type go 'firehose.*tracer' --ignore-file server/config/config.goLength of output: 9196
Script:
#!/bin/bash # Check if the new tracer type "firehose" is used or validated elsewhere in the codebase rg --type go 'firehose.*tracer' -g '!server/config/config.go'Length of output: 557
x/evm/keeper/abci.go (1)
34-47: Verify the correctness of the total difficulty (TD) valueThe
TD(total difficulty) is set tobig.NewInt(1). Ensure that this value accurately reflects the actual total difficulty of the blockchain at the current block height. An incorrectTDvalue may lead to inconsistencies in tracing and downstream processes.Run the following script to check the total difficulty value:
This script fetches the total difficulty of the latest block from the local Ethereum node. Compare this value with the one set in the code to ensure consistency.
x/evm/types/tracer.go (1)
75-84:NewLiveTracerfunction is correctly implemented with error handlingThe new
NewLiveTracerfunction properly initializes live tracers and includes appropriate error handling. This ensures that any issues during tracer initialization are caught and reported.x/evm/keeper/config.go (2)
158-167: LGTM: Conditional Tracer assignment is correctly implementedThe updated code in the
VMConfigmethod correctly assigns theTracerfield ofvmCfgbased on the presence ofcfg.Tracerand itsHooks. The conditional checks prevent nil pointer dereferences and ensure proper tracer configuration.
134-136:⚠️ Potential issueEnsure thread safety when accessing
k.evmTracerAccessing
k.evmTracerwithout synchronization may lead to data races ifk.evmTraceris modified concurrently by other goroutines. Please confirm thatk.evmTraceris immutable after initialization or properly synchronized to prevent concurrency issues.Consider verifying that
k.evmTraceris only set during initialization and not modified thereafter. You can run the following script to search for assignments tok.evmTracer:✅ Verification successful
Thread Safety of
k.evmTracerVerifiedThe assignment to
k.evmTraceris only done during initialization inx/evm/keeper/keeper.go. There are no other assignments, ensuring thatk.evmTracerremains immutable after initialization.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Find all assignments to k.evmTracer to ensure it is not modified concurrently. # Test: Search for assignments to k.evmTracer. Expect: Should only find assignments during initialization. rg --type go 'k\.evmTracer\s*='Length of output: 78
x/evm/keeper/keeper.go (2)
142-146: Initialize the EVM tracer safely inInitChainerThe new
InitChainermethod appropriately initializes the EVM tracer if it's set. Ensure that this method is called during the module's initialization phase to correctly set up tracing.
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98-118: Verify all calls toNewKeeperare updated to the new signatureThe
NewKeeperfunction signature has been changed by removing thetracerparameter. Ensure that all instantiations ofNewKeeperin the codebase are updated to reflect this change to prevent build errors or unexpected behavior.Run the following script to find any calls to
NewKeeperthat still use the old signature with thetracerparameter:This script searches for any instances where
NewKeeperis called with atracerparameter. If any matches are found, they need to be updated to align with the new function signature.go.mod (7)
99-99: Approved: Addition of indirect dependencygithub.com/chenzhuoyu/iasmThe addition of
github.com/chenzhuoyu/iasmas an indirect dependency is acceptable.
192-193: Approved: Addition of indirect dependenciesThe additions of
github.com/klauspost/cpuid/v2andgithub.com/knz/go-libeditas indirect dependencies are acceptable.
213-213: Approved: Update ofgithub.com/pelletier/go-toml/v2dependencyUpdating
github.com/pelletier/go-toml/v2to versionv2.2.3is acceptable.
256-256: Approved: Update ofgolang.org/x/cryptodependencyUpdating
golang.org/x/cryptoto versionv0.27.0is acceptable.
258-259: Approved: Updates ofgolang.org/x/sysandgolang.org/x/termdependenciesUpdating
golang.org/x/systo versionv0.25.0andgolang.org/x/termto versionv0.24.0is acceptable.
53-56:⚠️ Potential issueCaution: Usage of
golang.org/x/expintroduces unstable APIsThe
golang.org/x/exppackage contains experimental code, and its APIs are unstable and subject to change without notice. Including this dependency might introduce instability into the codebase. Please verify whether this dependency is necessary and consider using stable alternatives if possible.Run the following script to identify where
golang.org/x/expis used in the codebase:
284-284: Verify compatibility when replacingnhooyr.io/websocketwithgithub.com/coder/websocketReplacing
nhooyr.io/websocketwithgithub.com/coder/websocketmay introduce compatibility issues if the APIs differ. Please ensure that all usages ofnhooyr.io/websocketin the codebase are compatible withgithub.com/coder/websocket.Run the following script to check for usages of
nhooyr.io/websocketand assess compatibility:✅ Verification successful
Compatibility Verified for WebSocket Replacement
No usages of
nhooyr.io/websocketwere found in the codebase. Replacing it withgithub.com/coder/websocketdoes not introduce compatibility issues.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Find all imports of 'nhooyr.io/websocket' in the codebase. # Test: Search for import statements of 'nhooyr.io/websocket'. Expect: Verify that replacements are compatible. rg --type go '^import.*"nhooyr\.io/websocket' -A 5Length of output: 52
Script:
#!/bin/bash # Description: Use ast-grep to find all import declarations of 'nhooyr.io/websocket' in Go files. ast-grep --lang go --pattern 'import $_ "nhooyr\.io/websocket"'Length of output: 65
x/evm/tracers/firehose_test.go (1)
24-24: Verify import path for 'pbeth' packageThe import statement at line 24 imports
pbethfromgithub.com/evmos/ethermint/pb/sf/ethereum/type/v2. Since this repository isInjectiveLabs/ethermint, please verify that the import path is correct and aligns with the project's module path to prevent potential issues with module resolution.If the
pbethpackage exists within theInjectiveLabs/ethermintrepository, consider updating the import path accordingly.x/evm/keeper/state_transition.go (2)
230-230: Verify the impact of settingres.Logstonilafter post-processing failureClearing
res.Logswhen the transaction fails in post-processing hooks ensures that no logs are emitted for failed transactions. Please verify that this aligns with the expected behavior and that downstream components handle the absence of logs appropriately.Run the following script to check for any dependencies on
res.Logsbeing present even after failures:✅ Verification successful
Impact Verified: Setting
res.Logstonilcorrectly aligns with expected behavior and is appropriately handled by downstream components.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Search for usages of res.Logs after ApplyTransaction rg --type go 'res\.Logs' --context 5Length of output: 3202
Line range hint
346-370: Review balance adjustments in debug tracing modeWhen
cfg.DebugTraceistrue, the code adjusts the sender's balance and nonce to simulate transaction execution:
- Subtracts
msg.GasPrice * msg.GasLimitfrom the sender's balance.- Increments the sender's nonce by 1.
- Refunds the leftover gas after execution.
Please verify that these adjustments correctly emulate the actual transaction processing and do not interfere with state when
commitisfalse. Ensure that this logic is thread-safe and does not affect other concurrent operations.Run the following script to check for potential side effects in debug tracing mode:
x/evm/keeper/state_transition_test.go (3)
5-5: Approved: Addedtracingpackage importThe import of the
github.com/ethereum/go-ethereum/core/tracingpackage is appropriate for enabling tracing capabilities in the tests.
619-619: Verify usage of the initializedtracerAt line 619,
traceris initialized usingtypes.NewTracer("", msg, rules). Ensure that this tracer is properly integrated into the EVM execution within the test to capture the intended tracing information.
660-676: Test case addition: "message applied with firehose tracer"The new test case introduced for "message applied with firehose tracer" sets up a scenario to test message application using a firehose tracer. Verify that this test adequately covers the desired tracing behavior. Consider adding assertions to check the tracer's output to ensure it is capturing events as expected.
x/evm/statedb/statedb.go (1)
443-465:⚠️ Potential issueVerify interface compliance after method signature changes
The signatures of
AddBalance,SubBalance, andSetBalancehave been modified to include additional parameters for tracing. Please verify that these changes do not break the implementation of thevm.StateDBinterface.Run the following script to check interface conformity:
Also applies to: 469-491, 496-507
app/app.go (2)
1152-1154: Utility functionptris correctly implementedThe generic function
ptr[T any](t T) *Tis well-defined and will be useful for obtaining pointers to values without verbose syntax.
1117-1150: Verify the correctness of field mappings inTmBlockHeaderToEVMPlease ensure that the mappings from
tmproto.Headertoethtypes.Headerare accurate. In particular, verify that:
block.DataHashis correctly mapped toTxHash.block.LastResultsHashis appropriately used forReceiptHash.block.ProposerAddresscorresponds toCoinbase.Incorrect mappings could lead to inconsistent block headers and unexpected behavior in the EVM.
Run the following script to verify the field usages and mappings:
This script uses
rgto locate and display the mappings within the code, helping confirm that each Tendermint header field is appropriately assigned to the Ethereum header field.✅ Verification successful
Field mappings in
TmBlockHeaderToEVMare correctly implemented.
block.DataHashis properly mapped toTxHash.block.LastResultsHashis correctly assigned toReceiptHash.block.ProposerAddressaccurately corresponds toCoinbase.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify field mappings from tmproto.Header to ethtypes.Header in TmBlockHeaderToEVM. # Expected: Each field from tmproto.Header should be correctly assigned to the corresponding field in ethtypes.Header. # Search for the TmBlockHeaderToEVM function implementation rg 'func TmBlockHeaderToEVM' -A 50 # Verify mapping of block.DataHash to TxHash echo "Checking mapping of block.DataHash to TxHash:" rg 'txHash\s*:=\s*ethcommon\.BytesToHash\(\s*block\.DataHash\s*\)' rg 'TxHash:\s*txHash' # Verify mapping of block.LastResultsHash to ReceiptHash echo "Checking mapping of block.LastResultsHash to ReceiptHash:" rg 'resultHash\s*:=\s*ethcommon\.BytesToHash\(\s*block\.LastResultsHash\s*\)' rg 'ReceiptHash:\s*resultHash' # Verify mapping of block.ProposerAddress to Coinbase echo "Checking mapping of block.ProposerAddress to Coinbase:" rg 'miner\s*:=\s*ethcommon\.BytesToAddress\(\s*block\.ProposerAddress\s*\)' rg 'Coinbase:\s*miner'Length of output: 3057
x/evm/tracers/firehose.go (4)
591-599: Issue: Transaction reset logic may not be consistentIn the
OnTxEndmethod, whenf.transactionIsolatedistrue, the transaction is not reset immediately, but the comment mentions that resetting the transaction resetsf.transactionTransient. This might lead to inconsistent state ifOnTxResetis not called appropriately.Please verify that
OnTxResetis properly invoked after isolated transactions to reset the transaction state and that there's no risk of stale data remaining.
1144-1151: Issue: Skipping balance changes for self-destruct burn in backward compatibilityIn the
OnBalanceChangemethod, whenapplyBackwardCompatibilityistrue, balance changes with reasonBalanceDecreaseSelfdestructBurnare ignored. This could lead to missing balance change events in the traced data.Ensure that this behavior aligns with the expected backward compatibility requirements and that omitting these balance changes does not adversely affect downstream processes.
1405-1405:⚠️ Potential issueIssue: Unnecessary return type in
panicInvalidStatemethodThe method
panicInvalidStateis defined with a return typestringbut it always callspanicand does not return. Including a return type in this case is misleading and unnecessary.Apply the following diff to remove the return type:
-func (f *Firehose) panicInvalidState(msg string, callerSkip int) string { +func (f *Firehose) panicInvalidState(msg string, callerSkip int) {Likely invalid or redundant comment.
17-17:⚠️ Potential issueIssue: Importing non-standard package
slicesThe import path
"slices"is not part of the Go standard library prior to Go 1.21. If you are targeting an earlier Go version or if this is a custom package, ensure that the correct import path is used, such as"golang.org/x/exp/slices".Apply the following diff to correct the import:
- "slices" + "golang.org/x/exp/slices"Likely invalid or redundant comment.
- add tests for statedb balance change - fix add and sub balance changes - update dependencies to cometbft and cosmos-sdk
BeginBlock and EndBlock will fetch the tracer from the sdk.Context, when calling ApplyTransaction, we will fetch the tracer from the keeper.evmTracer
…e properly called
There was a problem hiding this comment.
Actionable comments posted: 37
🧹 Outside diff range and nitpick comments (22)
x/evm/tracers/tracing.go (1)
7-12: Type alias declaration is good, but consider some improvements.The
BlockchainTracerFactorytype alias is well-defined and documented. However, there are a few points to consider:
The comment mentions receiving a parsed URL, but this isn't reflected in the function signature. Consider adding a URL parameter or clarifying how the URL is used.
The comment suggests that the URL scheme determines which tracer to use, but this logic isn't implemented here. It might be helpful to add a TODO comment or clarify where this logic will be implemented.
The
backwardCompatibilityparameter's purpose isn't explained in the comment. Consider adding a brief explanation of its role.Would you like me to propose a revised version of the type alias and its documentation?
x/evm/tracing/context.go (3)
8-10: Consider a more concise name for the constant.The type declaration
CtxBlockchainTracerKeyTypeand its usage for the constantCtxBlockchainTracerKeyprovide good type safety. However, the constant name could be more concise while maintaining clarity.Consider renaming the constant to
TracerKeyorBlockchainTracerKeyto reduce redundancy:-const CtxBlockchainTracerKey = CtxBlockchainTracerKeyType("evm_and_state_logger") +const TracerKey = CtxBlockchainTracerKeyType("evm_and_state_logger")
12-14: LGTM: Function correctly sets the tracer in context. Consider a more concise name.The
SetCtxBlockchainTracerfunction correctly embeds the logger in the context usingWithContextandWithValue. The implementation is sound.Consider renaming the function to
SetBlockchainTracerorSetTracerfor brevity:-func SetCtxBlockchainTracer(ctx sdk.Context, logger *Hooks) sdk.Context { +func SetBlockchainTracer(ctx sdk.Context, logger *Hooks) sdk.Context {
16-28: LGTM: Function correctly retrieves the tracer from context. Suggest improvements to name and comment.The
GetCtxBlockchainTracerfunction correctly retrieves and type-checks the logger from the context. The implementation is sound and includes proper nil checks.
- Consider renaming the function to
GetBlockchainTracerorGetTracerfor brevity.- Improve the comment to follow Go's documentation conventions:
-// GetCtxBlockchainTracer function to get the Cosmos specific [tracing.Hooks] struct -// used to trace EVM blocks and transactions. +// GetBlockchainTracer retrieves the Cosmos-specific tracing.Hooks struct +// from the context. It returns nil if the tracer is not set or is of incorrect type. -func GetCtxBlockchainTracer(ctx sdk.Context) *Hooks { +func GetBlockchainTracer(ctx sdk.Context) *Hooks {go.mod (1)
278-281: Approve replacement directives with a note on documentation and maintenance.The use of custom forks for core components like cometbft and cosmos-sdk is approved. However, it's crucial to maintain these forks properly to avoid divergence from upstream.
Please consider the following actions:
- Document the reasons for using these forks in the project's README or a separate FORKS.md file.
- Create a maintenance plan to regularly sync these forks with their upstream repositories.
- Set up automated checks to notify when the forks are out of date with upstream.
Here's a script to help you check the status of your forks:
#!/bin/bash # Description: Check the status of forks compared to upstream # Test: Compare fork with upstream for each replaced dependency for repo in cometbft cosmos-sdk go-ethereum; do echo "Checking $repo:" gh repo view InjectiveLabs/$repo --json 'createdAt,pushedAt,isInOrganization' echo "---" donex/evm/tracing/hooks.go (1)
12-15: Add documentation comments to exported function types.To enhance code readability and adhere to Go conventions, consider adding documentation comments for the exported function types
OnCosmosBlockStart,OnCosmosBlockEnd, andOnCosmosTxStart.x/evm/tracers/firehose_test.go (2)
150-150: Typo in comment: 'codde' should be 'code'In the comment at line 150, the word 'codde' is misspelled. It should be 'code' to maintain clarity in the documentation.
Apply this diff to fix the typo:
- // On hard-fork, it happens that new fields are added, this test serves as a way to "detect" in codde + // On hard-fork, it happens that new fields are added, this test serves as a way to "detect" in code
353-356: Ensure consistent error messages and commentsIn the block starting at line 353, the error message mentions re-running the test with a specific command. Consider formatting the command for better readability and ensuring that the path and test name are correctly referenced.
Apply this diff to improve the error message:
- t.Fatalf("the golden file %q does not exist, re-run with 'GOLDEN_UPDATE=true go test ./... -run %q' to generate the intial version", goldenPath, t.Name()) + t.Fatalf("The golden file %q does not exist. Re-run the test with the following command to generate the initial version:\nGOLDEN_UPDATE=true go test ./... -run %q", goldenPath, t.Name())x/evm/keeper/state_transition_test.go (1)
653-653: Usesuite.Require()for consistency in error assertionsAt lines 653 and 717, the error assertions use
require.NoError(suite.T(), err), whereas other parts of the test suite utilizesuite.Require().NoError(err). For consistency and to leverage the testing suite's built-in assertion methods, consider usingsuite.Require()instead of directly callingrequire.Apply this diff to align the assertions:
- require.NoError(suite.T(), err) + suite.Require().NoError(err)Also applies to: 717-717
x/evm/statedb/statedb.go (5)
20-20: Import Statement FormattingThe import statement for
cosmostracingshould be grouped appropriately with other import statements, following Go's standard import grouping conventions.Apply this diff to adjust the import grouping:
import ( "fmt" + cosmostracing "github.com/evmos/ethermint/x/evm/tracing" "math/big" "sort"
63-63: Remove Redundant Empty LineThere is an extra empty line that is not necessary and can be removed to maintain code cleanliness.
Apply this diff to remove the redundant line:
// * Accounts - type StateDB struct {
104-106: Add Comment forevmTracerFieldConsider adding a comment explaining the purpose of the
evmTracerfield in theStateDBstruct for better code documentation.Apply this diff to add the comment:
// events emitted by native action nativeEvents sdk.Events + // EVM Tracer hooks for tracing EVM operations evmTracer *cosmostracing.Hooks
Line range hint
126-131: Simplify Cache MultiStore InitializationThe conditional check for
cacheMSinitialization can be simplified for better readability.Apply this diff to simplify the initialization:
} else { // in unit test, it could be run with an uncached multistore - if cacheMS, ok = ctx.MultiStore().CacheWrap().(cachemulti.Store); !ok { - panic("expect the CacheWrap result to be cachemulti.Store") - } + cacheMS = ctx.MultiStore().CacheMultiStore().(cachemulti.Store) commitMS = cacheMS.Write }
396-397: Correct Function Comment FormattingThe comment for the
ExecuteNativeActionfunction is not correctly formatted. Ensure that the comment immediately precedes the function definition without an empty line.Apply this diff to adjust the comment formatting:
-// ExecuteNativeAction executes native action in isolate, -// the writes will be reverted when either the native action itself fail -// or the wrapping message call reverted. +// ExecuteNativeAction executes a native action in isolation. +// The writes will be reverted if the native action fails +// or if the wrapping message call is reverted. func (s *StateDB) ExecuteNativeAction(contract common.Address, converter EventConverter, action func(ctx sdk.Context) error) error {x/evm/keeper/grpc_query_test.go (2)
Line range hint
1109-1113: AdjustexpPasstofalsefor test case with invalid tracerIn the test case
"invalid trace config - Invalid Tracer", theexpPassis set totrue. Since an invalid tracer is provided, the test should expect to fail. UpdateexpPasstofalseto accurately reflect the expected outcome.Apply this diff to fix the
expPassvalue:{ msg: "invalid trace config - Invalid Tracer", malleate: func() { traceConfig = &types.TraceConfig{ DisableStack: true, DisableStorage: true, EnableMemory: false, Tracer: "invalid_tracer", } }, - expPass: true, + expPass: false, traceResponse: "invalid_tracer is not defined", },
Line range hint
1138-1143: AdjustexpPasstofalsefor test case with invalid chain IDIn the test case
"invalid chain id", theexpPassis set totrue. Providing an invalid chain ID should cause the test to fail. UpdateexpPasstofalseto accurately reflect the expected failure.Apply this diff to fix the
expPassvalue:{ msg: "invalid chain id", malleate: func() { traceConfig = nil tmp := sdkmath.NewInt(1) chainID = &tmp }, - expPass: true, + expPass: false, traceResponse: "invalid chain id for signer", },x/evm/tracers/firehose.go (3)
975-980: Review backward compatibility handling for known issuesThe code intentionally reproduces a known issue for backward compatibility:
if *f.applyBackwardCompatibility { if encodedData == "" { encodedData = "." } }While maintaining backward compatibility is important, embedding known bugs can be risky and may lead to technical debt. Consider documenting these sections clearly and planning for a future where old bugs can be phased out or handled differently.
1683-1684: Implement the FIXME: Create unit test for header changesA FIXME comment indicates a need for a unit test:
// FIXME: Create a unit test that is going to fail as soon as any header is added inHaving this test will ensure that any changes to the block header structure are caught during development, preventing unintended side effects.
Would you like assistance in creating this unit test or opening a GitHub issue to track this task?
1723-1724: Reinstate Firehose tests to cover all transaction typesThere's a FIXME comment suggesting the need to bring back certain tests:
// FIXME: Bring back Firehose test that ensures no new tx type are missedComprehensive testing of transaction types is crucial for maintaining compatibility with future protocol updates. Restoring or creating these tests can help prevent bugs related to unhandled transaction types.
Do you need help in restoring these tests or updating them to cover new transaction types?
x/evm/keeper/keeper_firehose.go (3)
14-24: Add GoDoc comment for exported functionBlocksBloomConsider adding a GoDoc comment to the exported function
BlocksBloomto enhance code documentation and help other developers understand its purpose and usage.
26-53: Add GoDoc comment for exported functionToCosmosStartBlockEventAdding a GoDoc comment to the exported function
ToCosmosStartBlockEventwould improve code readability and assist others in understanding its purpose and usage.
54-58: Add GoDoc comment for exported functionToCosmosEndBlockEventConsider adding a GoDoc comment to the exported function
ToCosmosEndBlockEventto improve code documentation and aid in understanding its functionality.
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
⛔ Files ignored due to path filters (1)
go.sumis excluded by!**/*.sum
📒 Files selected for processing (20)
- app/app.go (0 hunks)
- go.mod (6 hunks)
- rpc/backend/tx_info.go (1 hunks)
- x/evm/keeper/abci.go (2 hunks)
- x/evm/keeper/config.go (4 hunks)
- x/evm/keeper/grpc_query.go (2 hunks)
- x/evm/keeper/grpc_query_test.go (12 hunks)
- x/evm/keeper/keeper.go (5 hunks)
- x/evm/keeper/keeper_firehose.go (1 hunks)
- x/evm/keeper/state_transition.go (13 hunks)
- x/evm/keeper/state_transition_test.go (6 hunks)
- x/evm/statedb/statedb.go (9 hunks)
- x/evm/statedb/statedb_test.go (6 hunks)
- x/evm/tracers/firehose.go (1 hunks)
- x/evm/tracers/firehose_test.go (1 hunks)
- x/evm/tracers/registry.go (1 hunks)
- x/evm/tracers/tracing.go (1 hunks)
- x/evm/tracing/context.go (1 hunks)
- x/evm/tracing/hooks.go (1 hunks)
- x/evm/types/tracer.go (4 hunks)
💤 Files with no reviewable changes (1)
- app/app.go
✅ Files skipped from review due to trivial changes (1)
- rpc/backend/tx_info.go
🧰 Additional context used
🔇 Additional comments (38)
x/evm/tracers/tracing.go (2)
1-1: LGTM: Package declaration is appropriate.The package name
tracersis concise, descriptive, and follows Go naming conventions. It accurately reflects the purpose of the package and aligns with its location in the directory structure.
3-5: LGTM: Import statement is correct and necessary.The import of
github.com/evmos/ethermint/x/evm/tracingis required for theBlockchainTracerFactorytype alias. The import statement follows Go conventions.x/evm/tracers/registry.go (3)
5-8: LGTM: Well-designed interface.The
LiveTracerRegistryinterface is well-defined with clear and purposeful methods. It follows the single responsibility principle and provides a solid contract for implementations.
12-16: LGTM: Proper initialization of the registry.The
NewLiveTracerRegistryfunction correctly initializes a newliveTracerRegistrywith an empty map. This approach is idiomatic in Go and provides a clean way to create new instances of the registry.
10-20: LGTM: Good struct design and interface compliance check.The
liveTracerRegistrystruct is appropriately designed with a map for storing tracer factories. The type assertionvar _ LiveTracerRegistry = (*liveTracerRegistry)(nil)is a great practice, ensuring thatliveTracerRegistryimplements theLiveTracerRegistryinterface at compile-time.x/evm/tracing/context.go (2)
1-6: LGTM: Package declaration and imports are appropriate.The package name "tracing" accurately reflects its purpose, and the imports are relevant to the functionality being implemented.
1-36: Overall assessment: Well-implemented tracing functionality with room for minor improvements.The
x/evm/tracing/context.gofile introduces well-structured and necessary functionality for tracing in the EVM context. The code follows Go conventions and achieves its purpose effectively. The suggested improvements mainly focus on naming consistency and conciseness, which would enhance the overall code quality and readability.Key points:
- Consider more concise names for constants and functions.
- Improve function comments to follow Go documentation conventions.
- Simplify the
GetEthTracingHooksfunction implementation.These changes will make the code more maintainable and easier to understand for other developers working on the project.
go.mod (2)
53-56: Approve indirect dependency updates with a note on testing.The updates to indirect dependencies are beneficial for security and bug fixes. However, it's important to ensure these updates don't introduce any regressions.
Please run the following script to execute the test suite and check for any regressions:
Also applies to: 69-69, 210-210, 253-253, 255-256, 262-262
10-10: Approve main dependency updates with a note on compatibility.The updates to main dependencies (cosmossdk.io/core, cosmossdk.io/x/tx, github.com/cometbft/cometbft) are good for keeping the project up-to-date. However, it's crucial to ensure these updates don't introduce breaking changes.
Please run the following script to check for any breaking changes or deprecations:
Also applies to: 18-18, 22-22
x/evm/keeper/abci.go (2)
20-20: Importing 'cosmostracing' package for tracing functionalityThe addition of the
cosmostracingimport enables the new tracing capabilities implemented in the code.
28-29: Proper error handling when retrieving EVM Block ConfigurationThe code correctly handles potential errors from
k.EVMBlockConfig(ctx, k.ChainID()), ensuring that any issues are gracefully managed.x/evm/types/tracer.go (3)
77-86: Well-implemented error handling inNewLiveTracerThe
NewLiveTracerfunction correctly handles errors during tracer initialization, enhancing the robustness of the tracer setup.
88-95: Proper initialization and error handling inNewFirehoseCosmosLiveTracerThe
NewFirehoseCosmosLiveTracerfunction properly initializes the Firehose Cosmos tracer with comprehensive error handling, ensuring reliable tracer operation.
42-42: Consistent addition ofFirehosetracer constantThe
Firehoseconstant is added consistently alongside existing tracer constants, maintaining code readability and organization.x/evm/keeper/config.go (5)
19-19: Approved: Updated import for tracing implementationThe import statement for
cosmostracingcorrectly reflects the shift to the new tracing mechanism.
56-56: Approved: UpdatedTracerfield inEVMConfigstructThe
Tracerfield in theEVMConfigstruct has been updated to use*cosmostracing.Hooks, aligning with the new tracing implementation.
129-135: Approved: Initialization ofEVMConfigwithoutTracerfieldThe
EVMConfigfunction initializes theEVMConfigstruct without setting theTracerfield. This is acceptable since theTracercan be set separately when needed.
137-149: Approved: Addition ofEVMConfigWithTracerfunctionThe new
EVMConfigWithTracerfunction properly extendsEVMConfigby setting theTracerfield whenk.evmTraceris available. This enhances flexibility in configuring EVM tracing.
174-176: Approved: Correct integration of tracing hooks inVMConfigThe conditional assignment ensures that
vmCfg.Traceris set tocfg.Tracer.Hooksonly when appropriate, integrating the new tracing hooks correctly into the VM configuration.x/evm/keeper/keeper.go (4)
19-19: LGTM!The import of
cosmostracingis correctly added and aligns with the new tracing implementation.
36-36: Avoid duplicate imports with conflicting aliasesThe package
github.com/evmos/ethermint/x/evm/typesis still imported twice: once unaliased and once asevmtypes. This can lead to confusion and potential conflicts in the code. Please consider importing the package once and using a consistent alias throughout the file.
207-208: Ensure thread safety when setting the tracerThe
SetTracermethod allows changing theevmTracerat runtime. If theKeeperis accessed concurrently, modifyingevmTracercould lead to race conditions. Consider adding synchronization mechanisms (e.g., mutexes) or document thatSetTracershould only be called during initialization.
142-146: Verify thatInitChaineris invoked during module initializationThe new
InitChainermethod initializes the tracer during the module's startup. To ensure that the tracing hooks are set up correctly, verify thatInitChaineris called appropriately in the module's lifecycle.You can run the following script to check where
InitChaineris called:x/evm/tracers/firehose_test.go (1)
343-344: Undefined function 'ptr' innewFirehoseinitializationThe function
ptrused at line 343 is undefined. This will cause a compilation error. Consider defining theptrfunction or using an alternative method to obtain a pointer to a boolean value.This issue was previously noted and remains unresolved.
x/evm/keeper/state_transition.go (1)
424-429:⚠️ Potential issueVerify nonce handling and Tracer notification
The
stateDB.SetNoncecall is commented out, andcfg.Tracer.OnNonceChangeis invoked instead. Ensure that the sender's nonce is correctly updated in the state database and that the tracer accurately reflects nonce changes.Confirm that omitting
stateDB.SetNoncedoes not lead to inconsistent nonce values. If the nonce is managed elsewhere, ensure that this is documented. Additionally, verify that the tracer'sOnNonceChangemethod correctly tracks the nonce update.x/evm/keeper/grpc_query.go (2)
23-23: LGTMThe import statement for
cosmostracingis appropriate and necessary for the updated tracing functionality.
723-725: LGTMThe assignment of
cfg.Tracertocosmostracing.Hookscorrectly wraps the existingtracer.Hooks, enhancing the tracing capabilities.x/evm/statedb/statedb.go (3)
450-464: Fix Error Handling Logic inTransferMethodThe tracing logic should only execute when there is no error (
s.err == nil). However, if an error occurs after transferring funds, it may result in inconsistent state or missing traces.Please ensure that errors are appropriately handled and consider whether tracing should occur even when an error is present.
552-557: Add Nil Check foroldCodeinSetCodeTo prevent potential panics when computing the hash of
nil, add a check to ensureoldCodeis notnilbefore hashing.
565-568: Ensure Correct Old Value Retrieval inSetStateIn the
SetStatemethod, retrieve the old value before callingSetStateto accurately capture the state change during tracing.x/evm/keeper/grpc_query_test.go (4)
1197-1198: Confirm necessity of error handling forSetBalanceThe addition of error handling for
SetBalanceis a good practice if the function can return an error. Please confirm whethersuite.App.EvmKeeper.SetBalanceactually returns an error. If it does not, the error check may be unnecessary.To verify if
SetBalancereturns an error, you can inspect the method signature using the following command:#!/bin/bash # Description: Check the signature of `SetBalance` to see if it returns an error. # Expectation: Determine if error handling is required. rg --type go 'func\s+\(.*\)\s+SetBalance\(.*\)\s+error' x/evm/keeper/keeper.go
1218-1218: Confirm error handling when setting balance inTestTraceBlockIn
TestTraceBlock, you're adding error handling after setting the balance:err := suite.App.EvmKeeper.SetBalance(suite.Ctx, suite.Address, big.NewInt(1000000000000000000), types.DefaultEVMDenom) suite.Require().NoError(err)Please verify whether
SetBalancereturns an error. If it does not, adding error handling may be unnecessary.To check if
SetBalancereturns an error, inspect its signature:#!/bin/bash # Description: Check if `SetBalance` returns an error. rg --type go 'func\s+\(.*\)\s+SetBalance\(.*\)\s+error' x/evm/keeper/keeper.go
1082-1082: Verifygasvalue intraceResponsewithinTestTraceBlockIn the
TestTraceBlocktest cases, thetraceResponsehasgasset to zero. Ensure that this aligns with the actual gas usage during block tracing. If the gas used is non-zero, consider updating the expectedtraceResponseaccordingly.You can check the actual gas usage during block tracing with the following script:
#!/bin/bash # Description: Check the gas used in block traces. # Expectation: Confirm whether `gas` should be zero. rg --type go 'traceResponse:\s*".*\\\"gas\\\":0.*"' x/evm/keeper/grpc_query_test.go
865-865: Verify the correctness of settinggasto zero intraceResponseIn the test cases within
TestTraceTx, the expectedtraceResponseJSON strings have thegasvalue set to"gas":0. Typically, thegasvalue should reflect the actual gas used during execution. Please verify if setting thegasto zero is intentional and whether it aligns with the actual behavior of the traced transactions.To ensure the accuracy of the expected
gasvalues, you can check the actual gas used during the execution by running the following script:x/evm/statedb/statedb_test.go (2)
71-194: Well-structured and comprehensive test cases addedThe new test cases
TestTracer_Balance,TestTracer_Nonce,TestTracer_Code, andTestTracer_SetStorageeffectively enhance the test suite. They provide thorough coverage for tracking state changes in balances, nonces, codes, and storage, ensuring theStateDBbehaves as expected.Also applies to: 305-351, 534-618, 1070-1112
25-26:⚠️ Potential issueAvoid duplicate imports and inconsistent aliasing of packages
The package
"github.com/evmos/ethermint/x/evm/types"is imported twice, once without an alias and once asevmtypes. This can lead to confusion and inconsistencies in the code. It's best to import the package once with a clear alias and use it consistently throughout the file.Apply this diff to remove the duplicate import and use a consistent alias:
- "github.com/evmos/ethermint/x/evm/types" evmtypes "github.com/evmos/ethermint/x/evm/types"Update all instances of
types.toevmtypes.throughout the file.Likely invalid or redundant comment.
x/evm/tracers/firehose.go (1)
74-76: Duplicate Comment CheckThis comment appears similar to a past review comment. Please ensure that we are not duplicating previous feedback.
x/evm/keeper/keeper_firehose.go (1)
37-40: EnsurefinalizedHeaderNumberis correct and non-negativeSubtracting 1 from
h.Heightmay result in negative values whenh.Heightis 0 or 1. Please verify thatfinalizedHeaderNumberaccurately represents the intended block number and handles edge cases appropriately.
- move tracer calls to storage changes higher up
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Actionable comments posted: 4
🧹 Outside diff range and nitpick comments (5)
x/evm/keeper/keeper.go (2)
141-145: LGTM: New InitChainer method addedThe
InitChainermethod is a good addition for initializing the blockchain tracer. It correctly checks for the presence of a tracer and invokes the initialization callback if available.Consider adding a comment explaining the purpose of this method and when it's expected to be called in the blockchain lifecycle. This would improve the code's documentation and make it easier for other developers to understand its role.
Line range hint
79-120: Potential issue: evmTracer field not initialized in NewKeeperThe
NewKeeperfunction has been updated to remove thetracer stringparameter, which aligns with the new tracing mechanism. However, the function doesn't initialize the newevmTracerfield of theKeeperstruct.To prevent potential nil pointer dereferences, consider initializing the
evmTracerfield in theNewKeeperfunction. You could either:
- Add a parameter to
NewKeeperto accept the tracer:func NewKeeper( // ... other parameters ... evmTracer *cosmostracing.Hooks, ) *Keeper { // ... other initializations ... return &Keeper{ // ... other fields ... evmTracer: evmTracer, } }
- Or, if the tracer is always set later using
SetTracer, initialize it to nil explicitly:return &Keeper{ // ... other fields ... evmTracer: nil, }This will make the initialization of the
evmTracerfield more explicit and reduce the risk of unexpected behavior.x/evm/statedb/statedb.go (1)
396-397: Correct grammatical errors in the comment for clarity.The comment has grammatical issues. Consider revising it to:
-// the writes will be reverted when either the native action itself fail -// or the wrapping message call reverted. +// The writes will be reverted when either the native action itself fails +// or the wrapping message call is reverted.x/evm/tracers/firehose.go (2)
225-225: Simplify redundant type conversionThe expression
len([]byte(cfg))is redundant becausecfgis already a byte slice ([]byte). You can simplify it tolen(cfg).Apply this diff to simplify the code:
- if len([]byte(cfg)) > 0 { + if len(cfg) > 0 {
1847-1850: Avoid unnecessary return statementsThe explicit
returnat the end ofnewBlobHashesFromChainis unnecessary since the named return valueoutwill be returned by default.Apply this diff to simplify the code:
- return
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📒 Files selected for processing (5)
- x/evm/handler_test.go (1 hunks)
- x/evm/keeper/keeper.go (4 hunks)
- x/evm/statedb/statedb.go (9 hunks)
- x/evm/tracers/firehose.go (1 hunks)
- x/evm/tracers/firehose_test.go (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- x/evm/tracers/firehose_test.go
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🔇 Additional comments (14)
x/evm/keeper/keeper.go (3)
19-19: LGTM: New import added correctlyThe new import for
cosmostracingis added correctly and follows the standard Go import format. The alias is clear and descriptive.
68-69: LGTM: New evmTracer field added, consider thread safetyThe new
evmTracerfield is correctly added to theKeeperstruct. It's of type*cosmostracing.Hooks, which aligns with the new import.As mentioned in a previous review, ensure thread safety when accessing
evmTracer, especially if theKeeperinstance might be accessed concurrently. Consider documenting any synchronization requirements or ensuring thatevmTraceris only set during initialization.
206-208: LGTM: New SetTracer method added, consider thread safety and documentationThe
SetTracermethod is correctly implemented to set theevmTracerfield of theKeeper.As mentioned in a previous review, ensure thread safety when setting the tracer, especially if the
Keeperinstance might be accessed concurrently.Consider the following improvements:
- Add more detailed documentation explaining when and how this method should be used.
- Implement a check to prevent setting the tracer more than once, similar to the
SetHooksmethod in this file.Example implementation:
// SetTracer sets the EVM tracer for the keeper. // It should be called only once during initialization. // It panics if called more than once. func (k *Keeper) SetTracer(tracer *cosmostracing.Hooks) { if k.evmTracer != nil { panic("cannot set evm tracer twice") } k.evmTracer = tracer }x/evm/statedb/statedb.go (11)
20-20: Added import for EVM tracing functionality.The import statement for
cosmostracingenables EVM tracing capabilities within the module.
104-106: IntroducedevmTracerfield inStateDBstruct.Adding the
evmTracerfield allows theStateDBto utilize EVM tracing hooks for enhanced observability.
217-218: UpdatedGetBalanceto retrieve balance using keeper.The method now fetches the balance directly from the keeper, ensuring consistency and accurate balance retrieval.
449-464: Implemented balance change tracing inTransfermethod.The tracing logic correctly captures balance changes for both sender and recipient when
s.errisnil, enhancing transaction observability.
468-490: Added tracing of balance increases inAddBalancemethod.The implementation correctly handles the tracing of balance additions when no errors have occurred.
494-516: Added tracing of balance decreases inSubBalancemethod.The method now accurately traces balance deductions, improving debuggability.
521-532: EnhancedSetBalancewith balance change tracing.The tracer captures balance updates appropriately when there are no errors, providing better insight into state changes.
552-562: Implemented code change tracing inSetCodemethod with proper nil checks.The code correctly handles cases where
oldCodemight benil, preventing potential panics and ensuring accurate tracing.
568-571: Added storage change tracing inSetStatemethod.The tracer captures state changes accurately by retrieving the old value before updating the state.
580-588: Implemented storage change tracing inSetStoragemethod.The method correctly logs storage changes for each key-value pair, enhancing debugging and state monitoring.
539-544: 🛠️ Refactor suggestionRemove redundant nil check for
stateObjectinSetNonce.The
stateObjectreturned bys.getOrNewStateObject(addr)will never benil, so theif stateObject != nilcheck is unnecessary.You can simplify the code by removing the redundant check:
func (s *StateDB) SetNonce(addr common.Address, nonce uint64) { stateObject := s.getOrNewStateObject(addr) - if stateObject != nil { oldNonce := s.GetNonce(addr) stateObject.SetNonce(nonce) if s.evmTracer != nil && s.evmTracer.OnNonceChange != nil { s.evmTracer.OnNonceChange(addr, oldNonce, nonce) } - } }Likely invalid or redundant comment.
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Actionable comments posted: 9
🧹 Outside diff range and nitpick comments (7)
x/evm/keeper/config.go (1)
156-165: LGTM: UpdatedVMConfigmethod to integrate new tracing mechanism.The changes to the
VMConfigmethod correctly integrate the new tracing mechanism. The conditional assignment ofvmCfg.Tracerensures compatibility with the new structure.Consider simplifying the condition:
-if vmCfg.Tracer == nil && cfg.Tracer != nil && cfg.Tracer.Hooks != nil { +if cfg.Tracer != nil && cfg.Tracer.Hooks != nil { vmCfg.Tracer = cfg.Tracer.Hooks }This simplification is possible because
vmCfg.Traceris always nil when the condition is checked, as it's not set in thevm.Configstruct initialization.x/evm/keeper/state_transition_test.go (3)
645-707: LGTM: Comprehensive test for transaction application with tracingThe new
TestApplyTransactionWithTracerfunction is a well-structured and valuable addition to the test suite. It effectively tests the integration of tracing with transaction application, using mock objects and custom hooks to verify the correct behavior.Consider adding assertions to verify the content of the traced data, not just that the hooks were called. This could provide more confidence in the correctness of the tracing implementation.
709-791: LGTM: Comprehensive test for message application with configured tracerThe
TestApplyMessageWithConfigTracerfunction is a valuable addition that extends the tracing test coverage. It effectively tests theApplyMessageWithConfigfunction with a configured tracer, verifying various tracing hooks.Consider parameterizing the test to cover different message types or configurations. This could increase the test coverage and ensure the tracing works correctly under various scenarios.
874-889: LGTM: Proper handling of tracer lifecycle in test casesThe additions to handle tracing in the
TestApplyMessageWithConfigfunction are appropriate. They ensure that the tracer'sOnBlockStartandOnBlockEndmethods are called when a tracer is configured, maintaining the correct state throughout the test.Consider extracting the block creation logic into a helper function to improve readability and reusability. For example:
func createMockBlock(height int64, time int64) *ethtypes.Block { return ethtypes.NewBlockWithHeader(ðtypes.Header{ Number: big.NewInt(height), Time: uint64(time), Difficulty: big.NewInt(0), }) }Then use it in the test:
config.Tracer.OnBlockStart(tracing.BlockEvent{ Block: createMockBlock(suite.Ctx.BlockHeight(), suite.Ctx.BlockHeader().Time.Unix()), TD: big.NewInt(0), })x/evm/keeper/state_transition.go (1)
251-258: Handle emptyVmErrorwhen creating an errorIn the deferred function,
errors.New(res.VmError)is called. Ifres.VmErroris an empty string, this will create an error with an empty message, which may not be meaningful. Consider checking ifres.VmErroris non-empty before creating the error to avoid potential confusion.Apply this diff to handle empty
VmError:defer func() { if cfg.Tracer != nil && cfg.Tracer.OnTxEnd != nil { - cfg.Tracer.OnTxEnd( - receipt, - errors.New(res.VmError), - ) + var err error + if res.VmError != "" { + err = errors.New(res.VmError) + } + cfg.Tracer.OnTxEnd( + receipt, + err, + ) } }()x/evm/keeper/grpc_query.go (1)
Line range hint
649-658: Ensure safe conversion oftraceConfig.LimittointWhen converting
traceConfig.Limittoint, there is a potential risk of integer overflow on 32-bit systems if the limit exceeds the maximum value ofint. Consider using a fixed-size integer type likeint64or adding a check to ensure the limit value is within the acceptable range.Apply this diff to ensure safe conversion:
logConfig := logger.Config{ // ... - Limit: int(traceConfig.Limit), + Limit: int64(traceConfig.Limit), }x/evm/statedb/statedb.go (1)
540-545: Consider handling nilstateObjectexplicitly inSetNonceIn the
SetNoncemethod, ifstateObjectisnil, the method exits silently. To improve error handling, consider logging a warning or returning an error whenstateObjectisnil. This can help identify issues where the account does not exist.
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- x/evm/keeper/config.go (4 hunks)
- x/evm/keeper/grpc_query.go (4 hunks)
- x/evm/keeper/state_transition.go (14 hunks)
- x/evm/keeper/state_transition_test.go (6 hunks)
- x/evm/statedb/statedb.go (9 hunks)
- x/evm/statedb/statedb_test.go (7 hunks)
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🔇 Additional comments (17)
x/evm/keeper/config.go (4)
21-22: LGTM: Import change for new tracing implementation.The addition of the
cosmostracingimport aligns with the transition to a new tracing mechanism, which is consistent with changes in other files.
57-57: LGTM: UpdatedEVMConfigstruct with new tracing type.The change of the
Tracerfield type to*cosmostracing.Hooksis consistent with the new tracing implementation and aligns with changes in other files.
130-136: LGTM: UpdatedEVMConfigmethod to use new tracing mechanism.The changes to the
EVMConfigmethod correctly integrate the new tracing mechanism by assigningk.evmTracerto theTracerfield of thecfgvariable. This is consistent with the overall transition to the new tracing implementation.
Line range hint
1-165: Overall changes look good: Successful integration of new tracing mechanism.The modifications in this file successfully integrate the new tracing mechanism based on
cosmostracing. The changes are consistent across different methods and structs, aligning with the broader refactoring effort mentioned in the AI summary.Key points:
- Import statements updated to include the new tracing package.
EVMConfigstruct updated to use the new tracing type.EVMConfigandVMConfigmethods modified to properly integrate the new tracing mechanism.These changes enhance the tracing capabilities of the EVM module while maintaining consistency with other related files.
x/evm/keeper/state_transition_test.go (2)
9-11: LGTM: New imports for tracing functionalityThe added imports for Comet and tracing packages are appropriate for the new tracing functionality being introduced in the tests.
Line range hint
1-965: Summary: Tracing functionality well integrated into EVM keeper testsThe changes to
state_transition_test.gosuccessfully integrate tracing functionality into the EVM keeper tests. New test functions for applying transactions and messages with tracers have been added, and existing tests have been updated to support tracing. The additions provide good coverage of the new tracing features.Key points:
- New imports for tracing packages have been correctly added.
- New test functions
TestApplyTransactionWithTracerandTestApplyMessageWithConfigTracercomprehensively test tracing integration.- Existing tests have been updated to support tracing where appropriate.
- A new
MockCometInfostruct has been added for testing purposes.Some minor improvements have been suggested:
- Initializing
msgbefore passing it toNewTracerinTestApplyMessage.- Adding assertions for traced data content in the new test functions.
- Parameterizing tests to cover more scenarios.
- Enhancing the
MockCometInfoimplementation for more meaningful tests.Overall, these changes significantly improve the test coverage for the EVM keeper's tracing capabilities.
x/evm/statedb/statedb_test.go (3)
304-350: LGTM: Comprehensive test cases for nonce tracingThe
TestTracer_Noncefunction provides a good set of test cases covering various nonce change scenarios. The use ofevmtypes.NewFirehoseCosmosLiveTracer()is consistent with the tracing functionality implementation.
70-193:⚠️ Potential issueUse consistent package alias for
evmtypesacross the codeThe function
NewFirehoseCosmosLiveTraceris called using different package aliases (typesandevmtypes) in various places. This inconsistency can be confusing and may lead to errors.Standardize the package alias usage by applying this diff:
- t, err := types.NewFirehoseCosmosLiveTracer() + t, err := evmtypes.NewFirehoseCosmosLiveTracer()Ensure that
evmtypesis used consistently throughout the file.Likely invalid or redundant comment.
57-64: 🛠️ Refactor suggestionAvoid unnecessary string conversions in
balanceChangesValuesThe function
balanceChangesValuesconverts numerical values to strings for formatting. If you switcholdandnewto use*big.Int, you can format them directly without intermediate string conversion.Modify the formatting to accommodate
*big.Int:func balanceChangesValues(changes []balanceChange) string { out := make([]string, len(changes)) for i, change := range changes { - out[i] = fmt.Sprintf("{%q, %q, ethtracing.BalanceChangeReason(%d)}", change.old, change.new, change.reason) + out[i] = fmt.Sprintf("{%v, %v, ethtracing.BalanceChangeReason(%d)}", change.old, change.new, change.reason) } return strings.Join(out, "\n") }Likely invalid or redundant comment.
x/evm/keeper/grpc_query.go (4)
26-27: Import of cosmostracing package addedThe import statement for
cosmostracingis necessary for the new tracing functionalities introduced.
666-666: Conditional override of the default tracerThe code correctly checks if a custom tracer is specified in
traceConfig.Tracerand overrides the default tracer accordingly.
668-676: Proper initialization of the tracer contextThe tracer context
tCtxis properly initialized with transaction and block information, ensuring accurate tracing.
724-726: Assignment of tracer hooks to the EVM configurationThe tracer hooks are correctly assigned to
cfg.Tracerusingcosmostracing.Hooks, integrating the new tracing mechanism into the EVM configuration.x/evm/statedb/statedb.go (4)
174-176: Good use of nil checks before tracing inAddLogThe added nil checks for
log,s.evmTracer, ands.evmTracer.OnLogensure that there will be no nil pointer dereference when callings.evmTracer.OnLog(log). This enhances the robustness of the code.
569-572: Correct order of operations inSetStatefor accurate tracingYou correctly perform the tracing of storage changes before modifying the state in
SetState. This ensures that the old value is captured accurately in the trace.
581-586: Properly tracing all storage changes inSetStorageIn
SetStorage, you iterate over each key-value pair and trace the changes before updating the state. This ensures comprehensive tracking of all storage modifications.
553-563: Safely handlingniloldCodeinSetCodeBy checking if
oldCodeisnilbefore computing its hash inSetCode, you prevent potential panics due to nil pointer dereferences. This enhances the stability of the code.
| // Why do we want to set the nonce in the statedb twice here? | ||
|
|
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Clarify the necessity of setting the nonce twice
The comment questions why the sender's nonce is set twice in the state database. This could indicate redundant code or an area needing clarification. Please investigate whether both nonce assignments are necessary. If they are, add explanatory comments to justify the repeated setting for future maintainability.
Would you like assistance in reviewing the nonce management to ensure it's correct and necessary?
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Actionable comments posted: 5
🧹 Outside diff range and nitpick comments (6)
x/evm/tracing/context.go (2)
9-11: LGTM: Custom type and constant are well-defined.The
BlockchainTracerKeyTypeandBlockchainTracerKeyare appropriately defined and provide type safety for context keys. The naming is clear and follows Go conventions.Consider adding a brief comment explaining the purpose of
BlockchainTracerKey, especially regarding its dual use for EVM and state logging:// BlockchainTracerKey is the context key for storing EVM and state logging hooks const BlockchainTracerKey = BlockchainTracerKeyType("evm_and_state_logger")
17-27: LGTM: GetTracingHooks function is well-implemented with proper error handling.The
GetTracingHooksfunction correctly retrieves the hooks from the context, handling potential nil values and type mismatches appropriately.Consider optimizing the function by combining the nil check and type assertion:
func GetTracingHooks(ctx sdk.Context) *Hooks { if hooks, ok := ctx.Context().Value(BlockchainTracerKey).(*Hooks); ok { return hooks } return nil }This change reduces the number of checks and makes the function more concise while maintaining the same functionality.
x/evm/types/tracer.go (1)
Line range hint
1-83: Summary of changes in x/evm/types/tracer.goThe changes in this file enhance the tracing capabilities by adding support for the Firehose tracer. The new
NewFirehoseCosmosLiveTracerfunction is well-implemented with proper error handling. However, theNewTracerfunction could benefit from improved error handling, particularly in the Firehose and default cases.Overall, these changes align well with the PR objectives of enhancing tracing capabilities. To further improve the code:
- Address the error handling issue in the
NewTracerfunction as suggested.- Consider adding unit tests for the new
NewFirehoseCosmosLiveTracerfunction and the updatedNewTracerfunction to ensure they behave as expected under various conditions.x/evm/keeper/state_transition_test.go (2)
645-707: LGTM: Comprehensive test for transaction application with tracerThe
TestApplyTransactionWithTracerfunction is well-structured and covers important aspects of tracing during transaction application. It sets up the necessary mocks, overrides tracer hooks, and verifies that the hooks are called and the transaction is applied correctly.Consider adding assertions for the following to make the test even more robust:
- Verify the contents of the tracer's collected data (if accessible).
- Assert on specific gas values in the
OnGasChangehook.- Check for any errors returned by the tracer hooks.
709-791: LGTM: Thorough test for message application with config tracerThe
TestApplyMessageWithConfigTracerfunction is well-implemented and provides comprehensive coverage for applying a message with a configured tracer. It properly sets up the environment, overrides necessary hooks, and verifies their execution along with the message application result.To further enhance the test:
- Consider adding assertions for the specific values passed to each hook (e.g., gas values, depth, addresses).
- You might want to test with different message types or configurations to ensure the tracer behaves correctly in various scenarios.
x/evm/tracing/hooks.go (1)
35-41: Add comments for exported types to enhance documentation.The exported structs
CosmosStartBlockEventandCosmosEndBlockEventlack accompanying comments. According to Go conventions, each exported type should have a comment starting with the type's name to provide clarity and improve generated documentation.Apply this diff to add the missing comments:
+// CosmosStartBlockEvent represents the event data for the start of a Cosmos block. type CosmosStartBlockEvent struct { CosmosHeader *types.Header BaseFee *big.Int GasLimit uint64 Coinbase common.Address Finalized *ethtypes.Header } +// CosmosEndBlockEvent represents the event data for the end of a Cosmos block. type CosmosEndBlockEvent struct { LogsBloom []byte }Also applies to: 43-45
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- x/evm/keeper/abci.go (2 hunks)
- x/evm/keeper/keeper.go (4 hunks)
- x/evm/keeper/state_transition_test.go (6 hunks)
- x/evm/tracers/firehose.go (1 hunks)
- x/evm/tracing/context.go (1 hunks)
- x/evm/tracing/hooks.go (1 hunks)
- x/evm/types/tracer.go (3 hunks)
🚧 Files skipped from review as they are similar to previous changes (2)
- x/evm/keeper/abci.go
- x/evm/keeper/keeper.go
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🔇 Additional comments (8)
x/evm/tracing/context.go (3)
1-7: LGTM: Package declaration and imports are appropriate.The package name "tracing" accurately reflects the functionality being implemented, and the imports are necessary and correctly specified.
13-15: LGTM: SetTracingHooks function is well-implemented.The
SetTracingHooksfunction correctly uses the SDK context and the customBlockchainTracerKeyto store the tracing hooks. The implementation is concise and maintains the SDK context type.
1-27: Overall, excellent implementation of tracing context management.This new file introduces a clean and efficient way to manage tracing hooks within the Cosmos SDK context. The implementation aligns well with Go best practices and Cosmos SDK patterns. The custom key type, constant, and functions provide a robust mechanism for setting and retrieving tracing hooks in the EVM context.
A few minor suggestions have been made to further improve documentation and optimize the code, but these are not critical. Great job on implementing this tracing functionality!
x/evm/types/tracer.go (3)
19-32: LGTM: Import statements updated correctlyThe new import statements are appropriate for the added functionality. They include necessary packages for error handling, tracing, and Cosmos-specific implementations.
40-40: LGTM: Firehose constant addedThe
Firehoseconstant is appropriately defined and follows the existing naming convention for tracer types.
75-82: LGTM: Well-implemented NewFirehoseCosmosLiveTracer functionThe
NewFirehoseCosmosLiveTracerfunction is well-structured and follows Go best practices:
- It properly initializes the Cosmos-specific Firehose tracer.
- Error handling is implemented correctly, with a descriptive error message that wraps the original error.
- The function signature clearly indicates the return types, including the potential for an error.
This is a good example of how to implement new functionality with proper error handling.
x/evm/keeper/state_transition_test.go (1)
9-11: LGTM: New imports for tracing and Comet integrationThe added imports for
comet,tracing, andcosmostracingare appropriate for the new test cases and functionality introduced in this file.x/evm/tracing/hooks.go (1)
1-45: LGTM!The code is well-structured and effectively extends the EVM tracing hooks with Cosmos-specific events.
| if event.Block.Transactions().Len() > 0 { | ||
| panic(fmt.Sprintf("The tracer received an `OnSkippedBlock` block #%d (%s) with %d transactions, this according to core/blockchain.go should never happen and is an error", | ||
| event.Block.NumberU64(), | ||
| event.Block.Hash().Hex(), | ||
| event.Block.Transactions().Len(), | ||
| )) | ||
| } |
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Handle unexpected conditions without panicking
In the OnSkippedBlock method, the code panics when it encounters an OnSkippedBlock event with transactions:
if event.Block.Transactions().Len() > 0 {
panic(fmt.Sprintf("The tracer received an `OnSkippedBlock` block #%d (%s) with %d transactions, this according to core/blockchain.go should never happen and is an error",
event.Block.NumberU64(),
event.Block.Hash().Hex(),
event.Block.Transactions().Len(),
))
}Using panic can cause the entire application to crash, which is undesirable in production environments. Instead, consider handling this unexpected condition more gracefully by logging an error and returning it to be handled upstream.
Apply this diff to handle the error without panicking:
if event.Block.Transactions().Len() > 0 {
- panic(fmt.Sprintf("The tracer received an `OnSkippedBlock` block #%d (%s) with %d transactions, this according to core/blockchain.go should never happen and is an error",
- event.Block.NumberU64(),
- event.Block.Hash().Hex(),
- event.Block.Transactions().Len(),
- ))
+ errMsg := fmt.Sprintf("Received OnSkippedBlock with transactions (block #%d, hash %s, tx count %d)",
+ event.Block.NumberU64(),
+ event.Block.Hash().Hex(),
+ event.Block.Transactions().Len())
+ log.Error(errMsg)
+ return errors.New(errMsg)
}| if err := os.WriteFile("/tmp/firehose_writer_failed_print.log", []byte(errstr), 0644); err != nil { | ||
| fmt.Println(errstr) | ||
| } | ||
|
|
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Avoid hardcoding file paths and improve error handling
The code writes an error message to a hardcoded file path /tmp/firehose_writer_failed_print.log with fixed permissions:
errstr := fmt.Sprintf("\nFIREHOSE FAILED WRITING %dx: %s\n", loops, err)
if err := os.WriteFile("/tmp/firehose_writer_failed_print.log", []byte(errstr), 0644); err != nil {
fmt.Println(errstr)
}Hardcoding file paths can lead to security issues and makes the application less portable. Additionally, using fixed permissions may expose sensitive information. Consider using a configurable logging mechanism and avoid writing directly to hardcoded file paths.
Apply this diff to address the issue:
-errstr := fmt.Sprintf("\nFIREHOSE FAILED WRITING %dx: %s\n", loops, err)
-if err := os.WriteFile("/tmp/firehose_writer_failed_print.log", []byte(errstr), 0644); err != nil {
- fmt.Println(errstr)
-}
+log.Error("Failed to write to firehose after multiple attempts", "attempts", loops, "error", err)
… using custom hooks for the firehose
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x/evm/types/tracer.go (3)
29-32: Import statements correctly register the Firehose tracerThe added import statements and comments effectively ensure that importing the
tracerspackage triggers itsinitmethod, registering the Firehose tracer in theLiveDirectory. This is important for the tracers to function properly.
40-40: Definition ofFirehosetracer constantThe addition of the
Firehoseconstant aligns with the new tracer functionality being introduced.
64-64:⚠️ Potential issueHandle errors returned by
tracers.LiveDirectory.NewIn the default case, the error from
tracers.LiveDirectory.New("noop", nil)is being ignored. Proper error handling enhances robustness by preventing potential issues if the initialization fails.Apply this diff to handle the error:
default: // Use noop tracer by default - hooks, _ = tracers.LiveDirectory.New("noop", nil) + hooks, err = tracers.LiveDirectory.New("noop", nil) + if err != nil { + return &tracers.Tracer{}, fmt.Errorf("failed to initialize noop tracer: %w", err) + }Likely invalid or redundant comment.
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (1)
app/app.go (1)
801-820: Consider using constants and improving error handling.While the tracer initialization logic is functionally correct, consider these improvements:
- Define constants for tracer types to avoid magic strings
- Consider returning an error instead of panicking for unsupported tracers
Apply this diff to improve the code:
+const ( + TracerFirehose = "firehose" + TracerAccessList = "access_list" +) - tracer := cast.ToString(appOpts.Get(srvflags.EVMTracer)) + tracerType := cast.ToString(appOpts.Get(srvflags.EVMTracer)) - if tracer == "firehose" { + if tracerType == TracerFirehose { liveTracer, err := evmtypes.NewFirehoseCosmosLiveTracer() if err != nil { panic(err) } app.EvmKeeper.SetTracer(liveTracer) app.evmTracer = liveTracer - } else if tracer == "access_list" { - panic("access_list tracer is not supported") + } else if tracerType == TracerAccessList { + return fmt.Errorf("access_list tracer is not supported") - } else if tracer != "" { - liveTracer := evmtypes.NewTracer(tracer, nil, ethparams.Rules{}) + } else if tracerType != "" { + liveTracer := evmtypes.NewTracer(tracerType, nil, ethparams.Rules{}) t := &evmtracing.Hooks{ Hooks: liveTracer.Hooks, }
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- app/app.go (6 hunks)
- server/start.go (1 hunks)
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server/start.go (1)
222-222: Verify the firestore tracer implementationThe EVMTracer flag description has been updated to include "firestore" as a new tracer type. Let's verify that the corresponding implementation exists.
app/app.go (3)
139-139: LGTM: Clean import addition.The new import for EVM tracing is properly placed and aliased.
253-254: LGTM: Clean struct field addition.The
evmTracerfield is properly defined as a pointer to avoid unnecessary copying and follows Go naming conventions.
895-897: LGTM: Consistent tracer integration.The tracer integration is consistently implemented across BeginBlocker, EndBlocker, and InitChainer methods.
Also applies to: 916-918
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Actionable comments posted: 1
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- app/app.go (7 hunks)
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app/app.go (3)
254-254: Addition of evmTracer field is appropriateThe addition of the
evmTracerfield to theEthermintAppstruct allows for proper management of EVM tracing hooks throughout the application.
869-875: Good job extracting EVM initialization into a helper methodExtracting the EVM initialization logic into the
initializeEVMmethod reduces code duplication and enhances maintainability.
801-821: Tracer setup logic appears correctThe code correctly initializes the EVM tracer based on the application options, allowing for different tracer types to be used as needed.
| if app.evmTracer != nil { | ||
| ctx = evmtracing.SetTracingHooks(ctx, app.evmTracer) | ||
| } | ||
|
|
||
| app.initializeEVM(ctx) | ||
|
|
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🛠️ Refactor suggestion
Consider extracting tracing hook setup into a helper method
The code to set up tracing hooks is duplicated in BeginBlocker, EndBlocker, and InitChainer. Extracting this into a helper method can improve code readability and maintainability.
Apply this diff to extract the tracing hook setup:
+func (app *EthermintApp) setTracingHooks(ctx sdk.Context) sdk.Context {
+ if app.evmTracer != nil {
+ ctx = evmtracing.SetTracingHooks(ctx, app.evmTracer)
+ }
+ return ctx
+}Then update BeginBlocker:
func (app *EthermintApp) BeginBlocker(ctx sdk.Context) (sdk.BeginBlock, error) {
- if app.evmTracer != nil {
- ctx = evmtracing.SetTracingHooks(ctx, app.evmTracer)
- }
+ ctx = app.setTracingHooks(ctx)
app.initializeEVM(ctx)
return app.ModuleManager.BeginBlock(ctx)
}Similarly update EndBlocker and InitChainer:
func (app *EthermintApp) EndBlocker(ctx sdk.Context) (sdk.EndBlock, error) {
- if app.evmTracer != nil {
- ctx = evmtracing.SetTracingHooks(ctx, app.evmTracer)
- }
+ ctx = app.setTracingHooks(ctx)
return app.ModuleManager.EndBlock(ctx)
} func (app *EthermintApp) InitChainer(ctx sdk.Context, req *abci.RequestInitChain) (*abci.ResponseInitChain, error) {
- if app.evmTracer != nil {
- ctx = evmtracing.SetTracingHooks(ctx, app.evmTracer)
- }
+ ctx = app.setTracingHooks(ctx)
app.initializeEVM(ctx)
return app.ModuleManager.InitGenesis(ctx, app.appCodec, genesisState)
}Also applies to: 897-900, 918-923
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (2)
x/evm/keeper/state_transition_test.go (2)
646-708: LGTM: Transaction tracer test implementationThe test properly verifies the basic tracer hooks for transaction lifecycle.
Consider adding assertions for the hook parameters to ensure they contain the expected values:
t.OnCosmosTxStart = func(vm *tracing.VMContext, tx *ethtypes.Transaction, hash common.Hash, from common.Address) { startTxHook(vm, tx, hash, from) onCosmosTxStartHookCalled = true + suite.Assert().Equal(suite.Address, from) + suite.Assert().NotNil(vm) }
710-792: LGTM: Config tracer test implementationThe test comprehensively verifies all tracer hooks for detailed transaction tracing.
Consider adding assertions for gas changes to verify the expected gas consumption:
t.OnGasChange = func(old, new uint64, reason tracing.GasChangeReason) { gasChangedHook(old, new, reason) onGasChangedHookCalled = true + suite.Assert().Greater(old, new, "Gas should decrease during execution") }
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- x/evm/keeper/state_transition.go (12 hunks)
- x/evm/keeper/state_transition_test.go (5 hunks)
- x/evm/types/errors.go (2 hunks)
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x/evm/types/errors.go (1)
120-121: LGTM! Error registration follows best practices.The error registration is well-implemented:
- Uses the standard
errorsmod.Registerpattern- Provides a clear and descriptive error message
- Maintains consistent formatting with other error definitions
Note: Update the error code constant reference after fixing the typo.
x/evm/keeper/state_transition.go (1)
371-388: LGTM: Well-structured tracer initialization and callback handlingThe implementation correctly:
- Sets the tracer in the stateDB
- Handles both OnCosmosTxStart and OnTxStart callbacks
- Documents the precedence of OnCosmosTxStart over OnTxStart
x/evm/keeper/state_transition_test.go (3)
9-11: LGTM: Import additions and tracer integrationThe new imports and tracer integration in the ApplyMessage test are appropriate for the added tracing functionality.
Also applies to: 637-638
874-890: LGTM: Block tracer hooks integrationThe block start/end hooks are properly integrated into the existing test.
945-966: 🛠️ Refactor suggestionEnhance MockCometInfo implementation
The current implementation returns zero values which may not provide adequate test coverage. This concern was raised in previous reviews and remains valid.
Consider implementing a more realistic mock as previously suggested:
type MockCometInfo struct { + evidence comet.EvidenceList + validatorsHash []byte + proposerAddr []byte + lastCommit comet.CommitInfo } func NewMockCometInfo() *MockCometInfo { - return &MockCometInfo{} + return &MockCometInfo{ + validatorsHash: []byte("mock_validators_hash"), + proposerAddr: []byte("mock_proposer_address"), + } } func (c *MockCometInfo) GetEvidence() comet.EvidenceList { - return nil + return c.evidence } func (c *MockCometInfo) GetValidatorsHash() []byte { - return []byte{} + return c.validatorsHash } func (c *MockCometInfo) GetProposerAddress() []byte { - return []byte{} + return c.proposerAddr } func (c *MockCometInfo) GetLastCommit() comet.CommitInfo { - return nil + return c.lastCommit }
Closes: #XXX
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