[ChainHelper] reduce complexity, pool based noncemanager #2332
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Caution Review failedThe pull request is closed. 📝 Walkthrough📝 WalkthroughWalkthroughThe changes in this pull request primarily focus on refactoring the Changes
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Actionable comments posted: 4
🧹 Outside diff range and nitpick comments (4)
node/pkg/chain/noncemanagerv2/noncemanagerv2.go (2)
63-69: Inefficient Channel Draining inunsafeFlushPoolThe
unsafeFlushPoolmethod drains the nonce pool by reading from the channel until it's empty:for len(pool) > 0 { <-pool }This approach can be inefficient. Consider replacing the existing channel with a new one to clear the pool more efficiently.
Apply this diff to replace the channel:
func (m *NonceManagerV2) unsafeFlushPool(address string) { + if _, exists := m.noncePool[address]; exists { + m.noncePool[address] = make(chan uint64, noncePoolBufferSize) + } }
37-38: Use Constants for Channel Buffer SizeThe channel buffer size is hardcoded as
30:m.noncePool[address] = make(chan uint64, 30)Consider defining a constant for the buffer size to improve readability and maintainability.
Apply this diff to introduce a constant:
const ( poolSize = 15 // expect maximum 15 submission per minute minimumNoncePoolSize = 3 poolAutoRefillInterval = time.Minute + noncePoolBufferSize = 30 ) ... m.noncePool[address] = make(chan uint64, noncePoolBufferSize)node/pkg/chain/helper/helper.go (1)
187-210: Improved Error Handling inSubmitDelegatedFallbackDirectIn
SubmitDelegatedFallbackDirect, ifGetSignedFromDelegatorfails, the error is not logged before falling back to a direct transaction:if err != nil { tx, err = utils.MakeDirectTx(ctx, t.client, contractAddress, t.wallet, functionString, t.chainID, nonce, args...)Consider logging the error from
GetSignedFromDelegatorto aid in debugging.Apply this diff to log the error:
if err != nil { + log.Error().Err(err).Msg("Failed to get signed transaction from delegator, falling back to direct transaction") tx, err = utils.MakeDirectTx(ctx, t.client, contractAddress, t.wallet, functionString, t.chainID, nonce, args...) if err != nil { return err } return utils.SubmitRawTx(ctx, t.client, tx) }node/pkg/reporter/app.go (1)
127-127: Consider a more robust solution for managing reporter concurrencyWhile adding sleep reduces concurrent starts, it might not be the most efficient solution. Consider alternatives:
- Using a semaphore to control concurrent reporters
- Implementing a proper rate limiter
- Using worker pools with controlled concurrency
Example implementation using a semaphore:
- time.Sleep(2 * time.Second) // sleep for less concurrency + // Create a semaphore with desired concurrency limit + sem := make(chan struct{}, 3) // Allow 3 concurrent reporters + sem <- struct{}{} // Acquire + go func(reporter *Reporter) { + defer func() { <-sem }() // Release + reporter.Run(ctx) + }(reporter)
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⛔ Files ignored due to path filters (1)
.github/workflows/dal.test.yamlis excluded by!**/*.yaml
📒 Files selected for processing (11)
node/pkg/chain/helper/helper.go(6 hunks)node/pkg/chain/helper/signer.go(1 hunks)node/pkg/chain/helper/types.go(1 hunks)node/pkg/chain/noncemanagerv2/noncemanagerv2.go(1 hunks)node/pkg/chain/tests/chain_test.go(7 hunks)node/pkg/checker/inspect/app.go(1 hunks)node/pkg/por/app.go(0 hunks)node/pkg/reporter/app.go(3 hunks)node/pkg/reporter/reporter.go(1 hunks)node/script/test_dal_consumer/main.go(2 hunks)node/script/test_submission/main.go(1 hunks)
💤 Files with no reviewable changes (1)
- node/pkg/por/app.go
🔇 Additional comments (15)
node/pkg/chain/noncemanagerv2/noncemanagerv2.go (1)
85-95: Potential Unbounded Goroutine in StartAutoRefill
The StartAutoRefill method runs indefinitely in a goroutine without a proper shutdown mechanism:
for {
select {
case <-ctx.Done():
return
case <-time.After(poolAutoRefillInterval):
err := m.refillAll(ctx)
if err != nil {
log.Error().Err(err).Msg("Failed to refill nonce pool")
}
}
}Ensure that the context passed to StartAutoRefill is appropriately canceled to prevent goroutine leaks when the application shuts down.
node/pkg/chain/helper/helper.go (1)
92-96: Initialize nonceManager Before Starting Auto Refill
The nonceManager is initialized and StartAutoRefill is called in the background:
nonceManager := noncemanagerv2.New(primaryClient)
go nonceManager.StartAutoRefill(ctx)Ensure that nonceManager is fully initialized before starting the auto-refill routine to prevent race conditions.
node/script/test_submission/main.go (1)
22-22: Update Function Call to Match New Method Signature
The call to SubmitDelegatedFallbackDirect has been updated to remove the maxTxSubmissionRetries parameter:
return kaiaHelper.SubmitDelegatedFallbackDirect(ctx, contractAddress, contractFunction, args...)This change aligns with the updated method signature. Ensure that any necessary retry logic is handled appropriately elsewhere if required.
node/pkg/chain/helper/types.go (2)
16-20: ChainHelper Struct Refactored for Simplification
The ChainHelper struct now uses a single client instead of a slice of clients, and a noncemanager has been added:
type ChainHelper struct {
client utils.ClientInterface
wallet string
chainID *big.Int
delegatorUrl string
noncemanager *noncemanagerv2.NonceManagerV2
}This simplification improves code maintainability and aligns with the updated nonce management approach.
Line range hint 34-36: Removal of WithoutAdditionalProviderUrls Function
The WithoutAdditionalProviderUrls function has been removed:
// func WithoutAdditionalProviderUrls() ChainHelperOption {
// return func(c *ChainHelperConfig) {
// c.UseAdditionalProviderUrls = false
// }
// }Verify that any code dependent on this option has been updated accordingly to prevent unintended behavior.
node/script/test_dal_consumer/main.go (2)
Line range hint 77-84: Update Method Call to Reflect Updated Signature
The SubmitDelegatedFallbackDirect method is called without the maxTxSubmissionRetries parameter:
err = kaiaHelper.SubmitDelegatedFallbackDirect(ctx, contractAddr, SUBMIT_STRICT, feedHashes, values, timestamps, proofs)This update aligns with the new method signature. Ensure that the removal of the retry parameter does not affect the expected behavior.
Line range hint 90-95: Consistent Update of Method Call Signature
Similarly, the second call to SubmitDelegatedFallbackDirect has been updated:
err = kaiaHelper.SubmitDelegatedFallbackDirect(ctx, contractAddr, SUBMIT_STRICT, feedHashes, values, timestamps, proofs)Confirm that this change is consistent throughout the codebase and that any additional retry logic is implemented if necessary.
node/pkg/reporter/reporter.go (1)
139-139: Verify error handling for transaction submissions
With the removal of explicit retry control, we should ensure that transaction failures are still properly handled by the internal nonce management system.
✅ Verification successful
Let me gather more information about the error handling implementation in the KaiaHelper.
Based on the results, I can now provide a final response. The code shows a robust nonce management system with the following key aspects:
Transaction submission is well-handled with improved nonce management
The removal of maxTxSubmissionRetries is justified as the system now uses a sophisticated nonce management approach:
- Uses NonceManagerV2 with automatic nonce pool refilling
- Implements thread-safe nonce allocation with proper mutex locks
- Handles nonce errors and maintains a pool of available nonces
- Includes fallback to direct transaction submission if delegated transaction fails
The error handling is actually more robust now with the nonce pool system that:
- Automatically refills when running low (minimumNoncePoolSize check)
- Maintains thread-safety for concurrent submissions
- Includes proper error propagation and logging
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for error handling patterns around SubmitDelegatedFallbackDirect
rg -A 5 "SubmitDelegatedFallbackDirect.*err\s*:=|err\s*=.*SubmitDelegatedFallbackDirect"
# Look for any retry-related code in the new implementation
ast-grep --pattern 'func $_ ($_, $_) {
$$$
retry $$$
$$$
}'
Length of output: 2282
Script:
#!/bin/bash
# Look for the implementation of SubmitDelegatedFallbackDirect
ast-grep --pattern 'func $_ SubmitDelegatedFallbackDirect($$$) {
$$$
}'
# Search for any transaction retry or nonce management related code
rg -B 2 -A 5 "nonce|retry|backoff" node/pkg/chain/
Length of output: 26546
node/pkg/reporter/app.go (1)
54-54: LGTM: Simplified chain helper initialization
The removal of additional provider URLs aligns with the PR's goal of reducing complexity.
node/pkg/chain/helper/signer.go (1)
243-243: Verify signer renewal reliability
The removal of explicit retry control in signer updates is a critical change. We need to ensure that signer renewal remains reliable, as failed renewals could impact system security.
Consider implementing a dead man's switch or monitoring system to detect and alert on signer renewal failures, as this is a critical security operation.
✅ Verification successful
Let me gather more information about the transaction submission and error handling mechanisms.
Based on the gathered information, I can now provide the final response:
Signer renewal remains reliable despite retry removal
The signer renewal system has multiple layers of protection that ensure reliability:
- Automatic renewal checks at regular intervals via
autoRenew - Comprehensive error logging for all failure scenarios
- Admin endpoints for manual intervention if needed
- Early renewal threshold to provide time buffer for retries
The removal of explicit retry control is acceptable because:
- The underlying transaction system already handles basic retries
- The periodic auto-renewal provides implicit retry capability
- Failed renewals are prominently logged for operational visibility
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Search for signer renewal error handling patterns
rg -A 10 "func.*Renew.*|func.*signerUpdate.*"
# Look for any recovery mechanisms in signer-related code
ast-grep --pattern 'func $_ ($_, $_) {
$$$
defer $$$
$$$
}'
Length of output: 4984
Script:
#!/bin/bash
# Check the implementation of SubmitDelegatedFallbackDirect for retry/error handling
ast-grep --pattern 'func $_ SubmitDelegatedFallbackDirect($$$) {
$$$
}'
# Look for error handling patterns in chain helper
rg -A 5 "failed to.*signer"
# Check for monitoring or alerting mechanisms
rg -A 5 "monitoring|alert.*signer"
Length of output: 6188
node/pkg/checker/inspect/app.go (1)
99-99: LGTM: Simplified chain helper initialization
The removal of WithoutAdditionalProviderUrls() aligns with the PR's objective of reducing complexity in JSON RPC usage.
Let's verify that this change is consistent across the codebase:
✅ Verification successful
Based on the search results, I can now provide a definitive response about the removal of WithoutAdditionalProviderUrls(). The codebase search shows that:
- There are no occurrences of
WithoutAdditionalProviderUrlsorWithAdditionalProviderUrlsin the codebase - The
NewChainHelperfunction is used consistently across the codebase with minimal options, primarilyWithReporterPkandWithBlockchainType - The test files confirm that the chain helper initialization is working correctly with the simplified approach
LGTM: Simplified chain helper initialization is consistent
The removal of WithoutAdditionalProviderUrls() is safe and aligns with the codebase's current patterns. All other usages of NewChainHelper are already using the simplified initialization approach.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check for any remaining usage of WithoutAdditionalProviderUrls
# Expect: No occurrences as this option should be removed
rg "WithoutAdditionalProviderUrls"
Length of output: 34
Script:
#!/bin/bash
# Let's verify the chain helper initialization patterns across the codebase
# First, find all usages of NewChainHelper
rg "NewChainHelper" -A 3
# Also check for any WithAdditionalProviderUrls to ensure we're not missing any variants
rg "WithAdditionalProviderUrls"
# Let's also check the helper package to understand the available options
fd "chain.*\.go" --exec cat {} \;
Length of output: 27589
node/pkg/chain/tests/chain_test.go (4)
Line range hint 54-60: LGTM: Improved test focus
The rename from TestNewChainHelper to TestNewSigner better reflects the test's purpose and aligns with the codebase's evolution towards simplified functionality.
242-254: LGTM: Simplified transaction submission API
The removal of maxTxSubmissionRetries parameter from SubmitDelegatedFallbackDirect aligns with the PR's objective of reducing complexity. The nonce pool-based approach should handle retries more efficiently.
95-95: LGTM: Enhanced test observability
Added logging statements improve test debugging and error tracing capabilities.
Also applies to: 124-124
751-756: Verify cleanup transaction submission
The cleanup operations in the test are critical. Ensure proper error handling and verification of transaction success.
Let's verify the transaction submission cleanup:
✅ Verification successful
Proper error handling is implemented for cleanup transactions
The verification shows that:
- The cleanup operations in the test file properly check for errors after each
SubmitDelegatedFallbackDirectcall - The implementation in
helper.goincludes error handling for nonce management - All other usages across the codebase consistently handle errors, either through error returns or panic (in test scripts)
- The specific cleanup transactions in the review are properly wrapped with error checks that fail the test if an error occurs
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Check for proper error handling in cleanup operations
# Expect: Error handling around SubmitDelegatedFallbackDirect calls
ast-grep --pattern 'SubmitDelegatedFallbackDirect($$$) {
$$$
if err != nil {
$$$
}
$$$
}'
Length of output: 103
Script:
#!/bin/bash
# Let's try a different approach to check the implementation and usage of SubmitDelegatedFallbackDirect
# First, let's find the implementation
ast-grep --pattern 'func $_ SubmitDelegatedFallbackDirect($$$) $_ {
$$$
}'
# Also check all usages with context
rg -A 5 "SubmitDelegatedFallbackDirect"
Length of output: 4016
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Actionable comments posted: 2
🧹 Outside diff range and nitpick comments (3)
node/pkg/chain/helper/helper.go (2)
187-210: Improve error handling in transaction submission.The fallback mechanism could benefit from more specific error types to distinguish between different failure scenarios (e.g., delegation failure vs. transaction creation failure).
+type DelegationError struct { + Err error +} + +func (e *DelegationError) Error() string { + return fmt.Sprintf("delegation failed: %v", e.Err) +} func (t *ChainHelper) SubmitDelegatedFallbackDirect(ctx context.Context, contractAddress, functionString string, args ...interface{}) error { // ... existing code ... tx, err = t.GetSignedFromDelegator(tx) if err != nil { + if _, ok := err.(*DelegationError); !ok { + return fmt.Errorf("unexpected error during delegation: %w", err) + } tx, err = utils.MakeDirectTx(ctx, t.client, contractAddress, t.wallet, functionString, t.chainID, nonce, args...) // ... rest of the code ... }
222-224: Add documentation for FlushNoncePool method.The new method lacks documentation explaining its purpose, when to use it, and potential side effects.
+// FlushNoncePool forces a refresh of the nonce pool, clearing any cached nonces +// and fetching the latest nonce from the blockchain. This should be used with +// caution as it may impact ongoing transactions. func (t *ChainHelper) FlushNoncePool(ctx context.Context) error { return t.noncemanager.Refill(ctx, t.wallet) }node/pkg/chain/noncemanagerv2/noncemanagerv2.go (1)
89-101: Optimize Periodic Refill withtime.TickerInstead oftime.AfterIn
StartAutoRefill, usingtime.Afterwithin a loop creates a new timer each iteration, which can be inefficient:case <-time.After(poolAutoRefillInterval):Using
time.Tickeris more efficient for periodic execution as it avoids creating new timers repeatedly.Modify the loop to utilize
time.Ticker:func (m *NonceManagerV2) StartAutoRefill(ctx context.Context) { + ticker := time.NewTicker(poolAutoRefillInterval) + defer ticker.Stop() for { select { case <-ctx.Done(): return - case <-time.After(poolAutoRefillInterval): + case <-ticker.C: err := m.refillAll(ctx) if err != nil { log.Error().Err(err).Msg("Failed to refill nonce pool") } } } }
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📒 Files selected for processing (3)
node/pkg/chain/helper/helper.go(6 hunks)node/pkg/chain/noncemanagerv2/noncemanagerv2.go(1 hunks)node/pkg/reporter/reporter.go(4 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- node/pkg/reporter/reporter.go
🔇 Additional comments (5)
node/pkg/chain/helper/helper.go (3)
85-85: Ensure secure storage of private keys.
The private key handling requires careful consideration for security.
193-193: Fix potential integer overflow in nonce logging.
The nonce value casting could cause overflow.
10-10: Verify the noncemanagerv2 implementation.
The switch to noncemanagerv2 represents a significant architectural change.
✅ Verification successful
NonceManagerV2 implementation is thread-safe and well-structured
The new nonce manager implementation is properly designed with:
- Thread-safe operations using mutex locks
- Buffered channels for nonce pooling (capacity: 30)
- Automatic pool refill mechanism with proper error handling
- Clean separation between safe (locked) and unsafe operations
- Context-aware operations for proper cancellation
The implementation shows good practices for concurrent access and resource management, making it a solid improvement over the previous version.
🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash
# Description: Verify the noncemanagerv2 implementation and its usage
# Check for any potential race conditions or concurrency issues in the new implementation
# Search for concurrent access patterns in noncemanagerv2
ast-grep --pattern 'type NonceManagerV2 struct {
$$$
}'
# Look for mutex usage and goroutine safety
rg -A 5 "sync\." "pkg/chain/noncemanagerv2"
Length of output: 576
Script:
#!/bin/bash
# Let's examine the implementation details of NonceManagerV2 more thoroughly
# Check the implementation of methods
rg -A 10 "func.*NonceManagerV2" node/pkg/chain/noncemanagerv2/
# Look for mutex usage patterns
rg -A 5 "mu\." node/pkg/chain/noncemanagerv2/
# Check how nonce pool is managed
rg -A 5 "noncePool" node/pkg/chain/noncemanagerv2/
# Look for potential initialization and cleanup
rg -A 5 "New.*NonceManagerV2" node/pkg/chain/noncemanagerv2/
Length of output: 10274
node/pkg/chain/noncemanagerv2/noncemanagerv2.go (2)
32-48:
Potential Deadlock in GetNonce Due to Channel Read While Holding Mutex
In GetNonce, the mutex is held while reading from the nonce channel:
nonce := <-m.noncePool[address]If the channel is empty, the read operation will block while the mutex is still held, preventing other goroutines from accessing noncePool to refill it. This can lead to a deadlock.
Apply this diff to release the mutex before reading from the channel:
func (m *NonceManagerV2) GetNonce(ctx context.Context, address string) (uint64, error) {
m.mu.Lock()
if _, ok := m.noncePool[address]; !ok {
m.noncePool[address] = make(chan uint64, poolSize)
}
if len(m.noncePool[address]) < minimumNoncePoolSize {
if err := m.unsafeRefill(ctx, address); err != nil {
m.mu.Unlock()
return 0, fmt.Errorf("failed to refill nonce pool: %w", err)
}
}
m.mu.Unlock()
nonce := <-m.noncePool[address]
return nonce, nil
}77-87: 🛠️ Refactor suggestion
Ensure All Nonce Pools Are Refilled Even If Some Refill Operations Fail
In the refillAll method, if an error occurs while refilling the nonce pool for one address, the function returns immediately:
if err := m.unsafeRefill(ctx, address); err != nil {
return err
}This means that nonce pools for other addresses will not be refilled, which could impact transaction submissions for those addresses.
Modify the function to continue refilling other addresses and collect any errors:
func (m *NonceManagerV2) refillAll(ctx context.Context) error {
var errs []error
for address := range m.noncePool {
if err := m.unsafeRefill(ctx, address); err != nil {
errs = append(errs, fmt.Errorf("failed to refill nonce pool for address %s: %w", address, err))
}
}
if len(errs) > 0 {
return fmt.Errorf("refillAll encountered errors: %v", errs)
}
return nil
}
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (4)
node/pkg/chain/helper/helper.go (4)
187-209: Improve error handling in SubmitDelegatedFallbackDirectThe error handling could be enhanced to provide more context about fallback scenarios.
func (t *ChainHelper) SubmitDelegatedFallbackDirect(ctx context.Context, contractAddress, functionString string, args ...interface{}) error { nonce, err := t.noncemanager.GetNonce(ctx, t.wallet) if err != nil { - return err + return fmt.Errorf("failed to get nonce: %w", err) } log.Debug().Uint64("nonce", nonce).Msg("nonce") tx, err := utils.MakeFeeDelegatedTx(ctx, t.client, contractAddress, t.wallet, functionString, t.chainID, nonce, args...) if err != nil { - return err + return fmt.Errorf("failed to make fee delegated tx: %w", err) } tx, err = t.GetSignedFromDelegator(tx) if err != nil { + log.Debug().Err(err).Msg("delegator signing failed, falling back to direct tx") tx, err = utils.MakeDirectTx(ctx, t.client, contractAddress, t.wallet, functionString, t.chainID, nonce, args...) if err != nil { - return err + return fmt.Errorf("failed to make direct tx after delegator failure: %w", err) } return utils.SubmitRawTx(ctx, t.client, tx) } return utils.SubmitRawTx(ctx, t.client, tx) }
212-219: Add debug logging for transaction submissionConsider adding debug logging to track transaction submission status.
func (t *ChainHelper) SubmitDirect(ctx context.Context, contractAddress, functionString string, args ...interface{}) error { + log.Debug().Str("contract", contractAddress).Str("function", functionString).Msg("submitting direct transaction") tx, err := t.MakeDirectTx(ctx, contractAddress, functionString, args...) if err != nil { + log.Debug().Err(err).Msg("failed to make direct transaction") return err } return utils.SubmitRawTx(ctx, t.client, tx) }
221-223: Add documentation for FlushNoncePoolPlease add documentation explaining:
- When this method should be called
- What are the implications of flushing the nonce pool
- Any potential side effects
+// FlushNoncePool forces a refresh of the nonce pool for the given wallet. +// This should be called when nonce synchronization issues are detected or +// when manual intervention in nonce management is required. func (t *ChainHelper) FlushNoncePool(ctx context.Context) error { return t.noncemanager.Refill(ctx, t.wallet) }
Line range hint
1-223: Document architectural changes and migration pathThis PR represents significant architectural changes:
- Transition from multiple clients to single client
- Introduction of pool-based nonce management
- Simplified transaction submission logic
Please ensure:
- Update main documentation to reflect these changes
- Provide migration guide for users
- Add integration tests for the new nonce management system
📜 Review details
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Review profile: CHILL
⛔ Files ignored due to path filters (1)
.github/workflows/reporter.test.yamlis excluded by!**/*.yaml
📒 Files selected for processing (2)
node/pkg/chain/helper/helper.go(6 hunks)node/pkg/chain/noncemanagerv2/noncemanagerv2.go(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- node/pkg/chain/noncemanagerv2/noncemanagerv2.go
🔇 Additional comments (2)
node/pkg/chain/helper/helper.go (2)
86-87: Ensure proper goroutine cleanup.
The StartAutoRefill goroutine lacks a proper cleanup mechanism.
101-101: 🛠️ Refactor suggestion
Add cleanup for noncemanager
The Close method should also clean up the noncemanager to prevent resource leaks.
func (t *ChainHelper) Close() {
+ if t.noncemanager != nil {
+ t.noncemanager.Close()
+ }
t.client.Close()
}Likely invalid or redundant comment.
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Actionable comments posted: 1
🧹 Outside diff range and nitpick comments (3)
node/pkg/chain/noncemanagerv2/noncemanagerv2.go (3)
76-82: Inefficient Flushing of Nonce Pool inunsafeFlushPoolIn
unsafeFlushPool, the method flushes the nonce pool by consuming all elements:for len(pool) > 0 { <-pool }This loop can be inefficient and can cause unnecessary blocking if the channel is large or if other goroutines are interacting with the channel.
Consider resetting the channel by recreating it, which is more efficient and thread-safe.
Apply this diff to reinitialize the channel:
func (m *NonceManagerV2) unsafeFlushPool(address string) { if _, exists := m.noncePool[address]; exists { - for len(m.noncePool[address]) > 0 { - <-m.noncePool[address] - } + m.noncePool[address] = make(chan uint64, poolSize) } }
64-67: Error Wrapping for Better Context inunsafeInitPoolIn
unsafeInitPool, when an error occurs fetching the current nonce, it returns the error directly:if err != nil { return err }Wrap the error with additional context to improve debugability.
Apply this diff to wrap the error:
if err != nil { - return err + return fmt.Errorf("failed to get current nonce for address %s: %w", address, err) }
19-22: Clarify Constants with Descriptive NamesThe constants
poolSize,minimumNoncePoolSize, andpoolAutoRefillIntervalcould be more descriptive to improve code readability.Consider renaming the constants:
const ( - poolSize = 30 // expect maximum 15 submission per minute - minimumNoncePoolSize = 5 - poolAutoRefillInterval = time.Minute + maxNoncePoolSize = 30 // expected max 15 submissions per minute + minNoncePoolSize = 5 + noncePoolRefillInterval = time.Minute )
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📒 Files selected for processing (2)
node/pkg/chain/helper/helper.go(6 hunks)node/pkg/chain/noncemanagerv2/noncemanagerv2.go(1 hunks)
🚧 Files skipped from review as they are similar to previous changes (1)
- node/pkg/chain/helper/helper.go
🔇 Additional comments (2)
node/pkg/chain/noncemanagerv2/noncemanagerv2.go (2)
51-54: Ensure Mutex Protection in Reset Method
In the Reset method, after acquiring the mutex, it calls unsafeInitPool:
return m.unsafeInitPool(ctx, address)Ensure that unsafeInitPool does not attempt to lock the mutex again to prevent potential deadlocks.
Review the unsafeInitPool method to confirm it does not lock the mutex.
31-48:
Potential Deadlock in GetNonce Due to Blocking Channel Read While Holding Mutex
In the GetNonce method, the mutex mu is held throughout the function, including during the read from the nonce channel:
nonce := <-m.noncePool[address]If the channel is empty, this read operation will block while holding the mutex, potentially causing a deadlock and preventing other goroutines from accessing noncePool. Consider releasing the mutex before reading from the channel to avoid blocking other operations.
Apply this diff to release the mutex before reading from the channel:
func (m *NonceManagerV2) GetNonce(ctx context.Context, address string) (uint64, error) {
m.mu.Lock()
if _, ok := m.noncePool[address]; !ok {
m.noncePool[address] = make(chan uint64, poolSize)
if err := m.unsafeInitPool(ctx, address); err != nil {
m.mu.Unlock()
return 0, fmt.Errorf("failed to refill nonce pool: %w", err)
}
}
if len(m.noncePool[address]) < minimumNoncePoolSize {
m.unsafeFillPool(address)
}
m.mu.Unlock()
nonce := <-m.noncePool[address]
return nonce, nil
}
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Actionable comments posted: 4
🧹 Outside diff range and nitpick comments (4)
node/pkg/chain/helper/helper.go (2)
189-208: Consider adding retry mechanism for transaction submissionWhile the fallback logic from delegated to direct transactions is well implemented, consider adding a retry mechanism for network-related failures during transaction submission.
func (t *ChainHelper) SubmitDelegatedFallbackDirect(ctx context.Context, contractAddress, functionString string, args ...interface{}) error { nonce := t.noncemanager.GetNonce() log.Debug().Uint64("nonce", nonce).Msg("nonce") tx, err := utils.MakeFeeDelegatedTx(ctx, t.client, contractAddress, t.wallet, functionString, t.chainID, nonce, args...) if err != nil { return err } tx, err = t.GetSignedFromDelegator(tx) if err != nil { tx, err = utils.MakeDirectTx(ctx, t.client, contractAddress, t.wallet, functionString, t.chainID, nonce, args...) if err != nil { return err } - return utils.SubmitRawTx(ctx, t.client, tx) + return utils.RetrySubmitRawTx(ctx, t.client, tx, maxRetries) } - return utils.SubmitRawTx(ctx, t.client, tx) + return utils.RetrySubmitRawTx(ctx, t.client, tx, maxRetries) }
220-222: Document FlushNoncePool usage guidelinesThe
FlushNoncePoolmethod is a critical operation that resets the nonce state. Please add documentation to clarify:
- When this method should be called
- Potential side effects
- Recovery mechanisms if called inappropriately
node/pkg/chain/noncemanagerv2/noncemanagerv2.go (2)
18-22: Consider optimizing pool size parametersThe current
poolSizeof 100 might be excessive compared to theminimumNoncePoolSizeof 5. This large gap could lead to unnecessary memory allocation. Consider reducingpoolSizeor making it configurable based on transaction volume.const ( - poolSize = 100 + poolSize = 30 // or make it configurable minimumNoncePoolSize = 5 poolAutoRefillInterval = time.Minute )
11-82: Consider architectural improvements for production readinessThe current implementation could benefit from the following architectural improvements:
- Add logging for debugging concurrent operations
- Implement metrics for monitoring pool usage and refill operations
- Add recovery mechanisms for channel panics
- Consider implementing a circuit breaker for RPC calls
Would you like me to provide specific implementation details for any of these improvements?
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📒 Files selected for processing (2)
node/pkg/chain/helper/helper.go(6 hunks)node/pkg/chain/noncemanagerv2/noncemanagerv2.go(1 hunks)
🔇 Additional comments (5)
node/pkg/chain/helper/helper.go (3)
10-10: Verify noncemanagerv2 migration impact
The transition from noncemanager to noncemanagerv2 represents a breaking change. Please ensure:
- All dependent code is updated to handle any API changes
- Migration documentation is available for users
85-85: Ensure secure handling of private keys
The private key wallet is obtained from config.ReporterPk. Ensure secure storage and access of private keys.
86-98: LGTM: Proper error handling in constructor
The initialization of noncemanager and error handling is well implemented. The code properly checks for errors and returns early if any initialization fails.
node/pkg/chain/noncemanagerv2/noncemanagerv2.go (2)
42-52:
Fix potential deadlock in GetNonce
The mutex is held while reading from the channel, which could lead to a deadlock if the channel is empty. This blocks other goroutines from accessing the noncePool.
func (m *NonceManagerV2) GetNonce() uint64 {
m.mu.Lock()
if len(m.noncePool) < minimumNoncePoolSize {
m.fillPool()
}
+ m.mu.Unlock()
nonce := <-m.noncePool
- m.mu.Unlock()
return nonce
}71-76:
Fix blocking issue in fillPool
The method blocks on channel read without checking channel state, which could lead to deadlock.
-func (m *NonceManagerV2) fillPool() {
- nonce := <-m.noncePool
- for i := 0; i < poolSize-len(m.noncePool); i++ {
- m.noncePool <- nonce + uint64(i)
- }
-}
+func (m *NonceManagerV2) fillPool(lastNonce uint64) {
+ remaining := poolSize - len(m.noncePool)
+ for i := 0; i < remaining; i++ {
+ m.noncePool <- lastNonce + uint64(i+1)
+ }
+}
Description
Remove additional json rpc usage from the logic
use nonce pool with pool reset on regular interval
Fixes # (issue)
Type of change
Please delete options that are not relevant.
Checklist before requesting a review
Deployment