Remove merge red blocks when mining #4245
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jackzhhuang
requested review from
sanlee42,
yourmoonlight and
nkysg
as code owners
WalkthroughThe changes introduce several enhancements across various modules in the codebase. A new method Changes
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Actionable comments posted: 17
🧹 Outside diff range and nitpick comments (24)
flexidag/src/lib.rs (2)
3-3: LGTM. Consider adding documentation for the new module.The addition of the
block_depthmodule aligns with the PR objectives. To improve code clarity and maintainability, consider adding a brief doc comment explaining the purpose and contents of this module.Example:
/// Module for managing block depth information and calculations. pub mod block_depth;
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10-16: LGTM. Add documentation for the new function.The
process_key_already_errorfunction is well-implemented and serves a clear purpose. To enhance code clarity and maintainability, consider adding documentation.Example:
/// Processes a Result, converting StoreError::KeyAlreadyExists to Ok(()). /// /// # Arguments /// /// * `result` - A Result that may contain a StoreError. /// /// # Returns /// /// * `Ok(())` if the input is Ok or Err(StoreError::KeyAlreadyExists) /// * The original error for any other error type pub fn process_key_already_error(result: Result<(), StoreError>) -> Result<(), StoreError> { // ... (existing implementation) }flexidag/src/consensusdb/mod.rs (1)
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1-33: Consider updating exports for the new moduleThe new
consensus_block_depthmodule has been added successfully. However, you might want to consider if any types or functions from this new module need to be exported in thepreludeorschemadbsections for easier access by other parts of the codebase.If there are important types or functions in the
consensus_block_depthmodule that should be easily accessible, consider adding them to the appropriate export section. For example:pub mod schemadb { pub use super::{ consensus_ghostdag::*, consensus_header::*, consensus_reachability::*, consensus_relations::*, consensus_block_depth::*, // Add this line if needed }; }kube/manifest/starcoin-halley.yaml (1)
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1-85: Summary of changes and recommendationsThis PR introduces significant changes to the Kubernetes configuration for the starcoin application:
- Updated container image to
starcoin/starcoin:dag-master- Modified node selector to target specific nodes
- Revised startup command with new initialization steps and error handling
These changes align with the PR objective of removing merge red blocks during mining, likely through the introduction of DAG-related functionality.
Recommendations:
- Ensure comprehensive testing of the new container image, particularly its DAG-related features.
- Verify that the node selector change doesn't negatively impact scalability or resource utilization.
- Thoroughly test the new startup command and error handling logic, especially in failure scenarios.
- Review and validate the new API quota settings.
- Consider the potential implications of automatic configuration and data removal on startup failure.
Please address the points raised in the individual comments and ensure all changes have been tested in a staging environment that closely mimics production.
chain/mock/src/mock_chain.rs (1)
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269-286: Summary: Improved pruning process with updated terminology and data structuresThe changes in the
produce_block_for_pruningmethod reflect a shift in how block data is handled during the pruning process. By replacingblue_blockswithghostdataand utilizing theMineNewDagBlockInfostruct, the code now provides a more comprehensive representation of the block data required for pruning.These modifications align with the PR objective of removing merge red blocks when mining, potentially leading to a more efficient and clearer pruning process. However, it's crucial to ensure that these changes maintain the correct functionality of the pruning mechanism.
Consider documenting the new pruning process, highlighting how the
MineNewDagBlockInfostruct andghostdatacontribute to removing merge red blocks. This documentation would be valuable for maintaining the code and onboarding new developers.sync/src/tasks/block_sync_task.rs (3)
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476-556: Consider adding documentation forensure_dag_parent_blocks_existThe
ensure_dag_parent_blocks_existmethod plays a crucial role in handling DAG blocks and maintaining data consistency. Given its complexity and asynchronous nature, it would be beneficial to add comprehensive documentation explaining its purpose, behavior, and the conditions under which it triggers parallel execution of absent blocks.Consider adding a doc comment above the method, explaining:
- The method's purpose in the context of DAG block synchronization.
- The conditions that lead to different outcomes (Continue vs. NeedMoreBlocks).
- The significance of the
ASYNC_BLOCK_COUNTconstant and its impact on parallel execution.- Any potential side effects or important state changes that occur within the method.
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516-530: Enhance error handling and logging for parallel executionThe introduction of parallel execution for absent blocks is a significant optimization. However, to ensure robustness and ease of debugging, consider enhancing the error handling and logging in this section.
Suggestions:
- Add more detailed logging before and after the
process_absent_blockscall to track the progress and performance of parallel execution.- Implement more granular error handling to catch and log specific issues that might occur during parallel processing.
- Consider adding metrics or telemetry to monitor the effectiveness of this optimization in production.
Example enhancement:
info!("Starting parallel execution of absent blocks. Count: {}", count); match parallel_execute.process_absent_blocks().await { Ok(_) => info!("Successfully processed {} absent blocks in parallel", count), Err(e) => { error!("Error during parallel processing of absent blocks: {:?}", e); // Consider how to handle this error (retry, fallback to sequential processing, etc.) } }
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1-618: Overall improvements in DAG block synchronization with opportunities for enhancementThe changes in this file significantly improve the handling of DAG blocks and introduce parallel processing for absent blocks, which should enhance the efficiency of the synchronization process. The explicit handling of different scenarios in the
collectmethod and the introduction of theensure_dag_parent_blocks_existmethod contribute to better data consistency and more robust synchronization.However, there are opportunities for further improvement:
- Adding comprehensive documentation for complex methods like
ensure_dag_parent_blocks_exist.- Enhancing error handling and logging, especially in the parallel execution logic.
- Considering the addition of metrics or telemetry to monitor the performance of these optimizations in production.
These enhancements would further improve the maintainability and reliability of the code, especially when dealing with the complexities of DAG-based blockchain synchronization.
flexidag/src/consensusdb/consensus_block_depth.rs (3)
69-69: UseArc::clone(&db)for clarityIn the
newmethod,db.clone()is used to clone theArc<DBStorage>instance. For clarity and idiomatic Rust, consider usingArc::clone(&db)to emphasize that a new reference-counted pointer is being created.
54-54: Clarify the 'append only' commentThe comment
// This is append onlymight be misleading if the append-only behavior is not enforced in the code. If overwriting is allowed, consider removing or updating the comment to reflect the actual behavior. If append-only behavior is expected, ensure that the code enforces it.
75-79: Assess caching strategy forget_block_depth_infoWhile
CachedDbAccessprovides caching, ensure that the cache size and eviction policy are appropriate for the expected workload. Improper caching configurations can lead to performance issues due to cache misses or memory overhead.flexidag/src/block_depth/block_depth_info.rs (2)
58-58: Correct the grammatical error in the commentThere's a minor grammatical error in the comment at line 58.
Apply this diff to correct the comment:
-// return hash zero if no requiring merge depth +// Return zero hash if no required merge depth
112-113: Fix the typo in the documentation commentThe term "prunality" appears to be a typo. It should likely be "pruning".
Apply this diff to correct the typo:
-/// By prunality rules, these blocks must have `merge_depth_root` on their selected chain. +/// By pruning rules, these blocks must have `merge_depth_root` on their selected chain.chain/src/verifier/mod.rs (2)
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429-449: Consider refactoring to reduce code duplication betweenDagVerifierForMiningandDagVerifierForSyncThe implementations of
verify_headerin bothDagVerifierForMiningandDagVerifierForSyncare identical, each callingBasicDagVerifier::verify_header. To adhere to the DRY (Don't Repeat Yourself) principle and improve maintainability, consider abstracting this common logic into a shared function or base implementation.
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453-471: Reduce duplication inDagVerifierForSyncby refactoringSimilar to the previous suggestion, the
verify_headermethod inDagVerifierForSyncduplicates code by callingBasicDagVerifier::verify_header. Refactoring this method into a shared implementation can enhance code clarity and reduce maintenance overhead.sync/src/block_connector/write_block_chain.rs (2)
373-377: Typo in error message: 'Can not' should be 'Cannot'In the error message:
.ok_or_else(|| format_err!("Can not find block {} in main chain", block_id))?;Consider changing 'Can not' to 'Cannot' for grammatical correctness.
Apply this diff:
-.ok_or_else(|| format_err!("Can not find block {} in main chain", block_id))?; +.ok_or_else(|| format_err!("Cannot find block {} in main chain", block_id))?;
415-418: Consistent error message formattingThe error message formatting is slightly inconsistent. For clarity and consistency, consider adjusting the format.
Revise the error message as follows:
format_err!( "In resetting, cannot find the block header for {:?}", descendant )flexidag/src/blockdag.rs (2)
88-89: Avoid unnecessary cloning of resourcesIn the
newmethod,reachability_service.clone()andghostdag_store.clone()are passed to thePruningPointManager::newmethod. Cloning can be expensive if these resources are large.If possible, pass references instead of cloning:
let pruning_point_manager = PruningPointManager::new( - reachability_service.clone(), - ghostdag_store.clone(), + &reachability_service, + &ghostdag_store, pruning_depth, pruning_finality, );Ensure that the
PruningPointManager::newmethod accepts references.
688-690: Documentation forreachability_servicemethodThe
reachability_servicemethod provides access to the reachability service via the pruning point manager. For better clarity and maintainability, consider adding documentation to this method.Add Rust documentation comments:
/// Provides access to the reachability service. pub fn reachability_service(&self) -> MTReachabilityService<DbReachabilityStore> { self.pruning_point_manager().reachability_service() }chain/src/chain.rs (1)
1428-1432: Refine error message in uncle verificationIncluding large data structures in error messages can clutter logs. Consider simplifying the error message for clarity.
Apply this diff to simplify the error message:
- bail!( - "failed to check the uncle, local: {:?} and miner: {:?}", - next_ghostdata.mergeset_blues, - uncles - ); + bail!("Uncle verification failed: local and miner uncles do not match.");flexidag/tests/tests.rs (4)
1348-1348: Correct typographical error in commentChange "initialzie the dag firstly" to "initialize the DAG first" for clarity.
1345-1608: Enhance test readability with explanatory commentsConsider adding comments throughout the
test_merge_boundedfunction to explain the purpose of each block addition and test step. This will improve the maintainability and understandability of the test code.
1476-1476: Define constants for magic numbersConsider defining constants for magic numbers like
merge_depth = 3to improve code readability and maintainability.
1550-1554: Simplify conditional assignment for clarityThe assignment to
forkcan be simplified or accompanied by a comment explaining its purpose. This enhances readability.
📜 Review details
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📒 Files selected for processing (19)
- chain/api/src/chain.rs (1 hunks)
- chain/mock/src/mock_chain.rs (2 hunks)
- chain/src/chain.rs (10 hunks)
- chain/src/verifier/mod.rs (2 hunks)
- config/src/genesis_config.rs (1 hunks)
- flexidag/src/block_depth/block_depth_info.rs (1 hunks)
- flexidag/src/block_depth/mod.rs (1 hunks)
- flexidag/src/blockdag.rs (9 hunks)
- flexidag/src/consensusdb/consensus_block_depth.rs (1 hunks)
- flexidag/src/consensusdb/db.rs (4 hunks)
- flexidag/src/consensusdb/mod.rs (1 hunks)
- flexidag/src/lib.rs (1 hunks)
- flexidag/src/prune/pruning_point_manager.rs (1 hunks)
- flexidag/tests/tests.rs (7 hunks)
- kube/manifest/starcoin-halley.yaml (1 hunks)
- sync/src/block_connector/block_connector_service.rs (4 hunks)
- sync/src/block_connector/write_block_chain.rs (6 hunks)
- sync/src/parallel/executor.rs (4 hunks)
- sync/src/tasks/block_sync_task.rs (1 hunks)
✅ Files skipped from review due to trivial changes (2)
- config/src/genesis_config.rs
- flexidag/src/block_depth/mod.rs
🧰 Additional context used
🔇 Additional comments (38)
flexidag/src/lib.rs (1)
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1-16: Overall, the changes look good and align with the PR objectives.The introduction of the
block_depthmodule and theprocess_key_already_errorfunction enhances the codebase's functionality for managing block depth and handling specific error cases. These additions are consistent with the PR's goal of improving the mining process and block management.To further improve the code:
- Consider adding module-level documentation for
block_depthto explain its purpose and contents.- Add function-level documentation for
process_key_already_errorto clarify its usage and behavior.These documentation additions will enhance code clarity and maintainability for future developers working on this codebase.
flexidag/src/consensusdb/mod.rs (1)
4-4: New module added:consensus_block_depthThe addition of the
consensus_block_depthmodule appears to be consistent with the existing structure and naming conventions. It's placed appropriately among other consensus-related modules.To ensure the new module is properly integrated, let's verify its implementation and usage:
kube/manifest/starcoin-halley.yaml (3)
25-25: Confirm the node selector change and its impact.The nodeSelector has been updated to
starcoin/node-pool: seed-pool. This change ensures that the starcoin pods are scheduled on specific nodes, potentially optimized for seed operations.Please confirm:
- Are the target nodes labeled correctly with
starcoin/node-pool: seed-pool?- Is this change intentional and aligned with the cluster's capacity planning?
- Could this change potentially limit the scalability of the starcoin pods?
#!/bin/bash # Verify the existence of nodes with the required label kubectl get nodes -l starcoin/node-pool=seed-pool
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28-45: Review the modified startup command and error handling logic.The startup command has been significantly changed, introducing more complex initialization steps and new error handling logic. These changes could impact the node's behavior during startup and recovery scenarios.
Key points to consider:
- The command now includes cleanup of specific files and directories before startup.
- New error handling logic attempts to remove configuration and data files if startup fails.
- The starcoin node is started with numerous new parameters, including API quota settings.
Please address the following:
- Have these changes been thoroughly tested, especially the error handling scenarios?
- Are the new API quota settings appropriate for the expected load?
- Could the automatic removal of configuration and data files in case of startup failure lead to any data loss issues?
26-26: Verify the new container image and its implications.The container image has been updated from
starcoin/starcoin:pruning-pointtostarcoin/starcoin:dag-master. This change suggests a shift to a version focused on DAG (Directed Acyclic Graph) functionality, which aligns with the PR objective of removing merge red blocks during mining.Please confirm:
- Is this the correct image for the intended changes?
- Has this image been tested in a staging environment?
- Are there any breaking changes or new dependencies introduced by this image?
flexidag/src/consensusdb/db.rs (5)
3-3: LGTM: New import for block depth functionality.The addition of
DbBlockDepthInfoStoreandDAG_BLOCK_DEPTH_INFO_STORE_CFfrom theconsensus_block_depthmodule aligns with the new block depth management functionality.
76-76: LGTM: New column family added for block depth info store.The addition of
DAG_BLOCK_DEPTH_INFO_STORE_CFto the list of column families is consistent with the new block depth management functionality. This ensures that the database will support the new block depth info store.
98-102: LGTM: Correct initialization of stores with proper database references.The changes in the
create_from_pathmethod's return statement are correct:
- Using
db.clone()forstate_storeensures it has its own reference to the database.- The new
block_depth_info_storeis properly initialized with the lastdbreference.These changes maintain proper ownership and reference counting for the database across all stores.
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1-105: Summary: Successful integration of block depth management.The changes in this file successfully integrate block depth management into the
FlexiDagStoragestruct. Key improvements include:
- Addition of a new
block_depth_info_storefield.- Update to the
create_from_pathmethod to support the new store.- Proper initialization and database reference management.
These changes align with the PR objectives and enhance the blockchain's functionality by improving block depth handling.
23-23: New field added for block depth management.The addition of
block_depth_info_storeenhancesFlexiDagStoragewith block depth management capabilities. The use ofArcensures thread-safety and shared ownership.Consider if public visibility is necessary for this field. If not, you might want to make it private and provide public methods for interacting with it. To verify the necessity of public access, we can check for external usage:
✅ Verification successful
Restrict visibility of
block_depth_info_storeto enhance encapsulation.The
block_depth_info_storefield is only accessed withinblockdag.rsandconsensusdb/db.rs. Consider making it private and adding public methods if external access is needed.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for external usage of block_depth_info_store rg "block_depth_info_store" --type rustLength of output: 407
chain/api/src/chain.rs (1)
117-121: Approve new method with suggestions for documentation and testing.The addition of
merge_check_and_ghostdatamethod to theChainReadertrait is approved. This method seems to be an important addition for handling uncle blocks and ghost data in the DAG structure.However, to ensure clarity and maintainability:
- Please add documentation comments explaining the purpose of this method, its parameters, return value, and any side effects.
- Clarify how this method differs from or extends the functionality of
verify_and_ghostdata.To ensure the method is properly integrated:
- Verify the impact on the mining process, as mentioned in the PR objectives.
- Update existing tests or add new ones to cover this new method.
Run the following script to check for usage and test coverage:
chain/mock/src/mock_chain.rs (1)
269-270: LGTM: Improved naming and data structure usage.The renaming of
blue_blockstoghostdataand the use of theMineNewDagBlockInfostruct improve clarity and align with the PR objective of removing merge red blocks. The changes in the debug logging and block header collection logic consistently reflect this new structure.Consider adding a brief comment explaining the
MineNewDagBlockInfostruct and its significance in the pruning process.To ensure these changes don't introduce any regressions in the pruning process, please verify:
- The pruning logic still works as expected with the new
ghostdatastructure.- The
mergeset_bluesfield contains the same information as the previousblue_blocks.Also applies to: 278-278, 285-286
✅ Verification successful
Verified:
blue_blockshas been successfully removed inchain/mock/src/mock_chain.rs.All instances of
blue_blockshave been appropriately replaced withghostdata.mergeset_bluesin the specified lines. No residual or conflicting usages ofblue_blockswere found in the reviewed file.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the usage and structure of MineNewDagBlockInfo # Test 1: Check the definition of MineNewDagBlockInfo rg -p "struct MineNewDagBlockInfo" -A 10 # Test 2: Verify that mergeset_blues is used consistently rg "mergeset_blues" # Test 3: Check for any remaining uses of blue_blocks rg "blue_blocks"Length of output: 8451
sync/src/tasks/block_sync_task.rs (1)
616-618: Improved clarity in block collection logicThe explicit handling of
ParallelSign::NeedMoreBlocksand immediate return ofCollectorState::Needenhances the readability and maintainability of the code. This change makes the behavior more clear when additional blocks are required during the synchronization process.flexidag/src/consensusdb/consensus_block_depth.rs (3)
23-28: Validate schema definition for consistencyEnsure that the schema defined for
BlockDepthInfoDatacorrectly matches the intended storage format. Verify that the key and value types are accurate, and that the column family nameDAG_BLOCK_DEPTH_INFO_STORE_CFaligns with any database initialization code elsewhere.
62-62: Confirm thread safety ofCachedDbAccessusageThe
block_depth_info_accessfield usesCachedDbAccess, which must be thread-safe for concurrent access. Verify thatCachedDbAccess<BlockDepthInfoData>implementsSendandSynctraits to ensure thread safety.Run the following script to check if
CachedDbAccess<BlockDepthInfoData>implementsSendandSync:#!/bin/bash # Description: Check if CachedDbAccess<BlockDepthInfoData> implements Send and Sync traits. # Test: Use Rust's `cargo check` to confirm trait implementations. # Expect: `CachedDbAccess<BlockDepthInfoData>` implements both `Send` and `Sync`. # Note: This script assumes that CachedDbAccess is in the current crate scope. cargo check --features 'unused' --message-format=json \ | jq '.[] | select(.reason=="compiler-message") | .message.spans[]? | select(.file_name | endswith("cached_db_access.rs")) | .label' \ | grep -E 'Send|Sync'
22-22: Verify ifDAG_BLOCK_DEPTH_INFO_STORE_CFneeds wider visibilityThe constant
DAG_BLOCK_DEPTH_INFO_STORE_CFis declared withpub(crate)visibility. Verify whether this constant needs to be accessed outside the crate. If so, changing its visibility topubmight be necessary. If it's only used within the crate,pub(crate)is appropriate.Run the following script to check for external usages:
✅ Verification successful
DAG_BLOCK_DEPTH_INFO_STORE_CFvisibility is appropriately set topub(crate)🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Find usages of DAG_BLOCK_DEPTH_INFO_STORE_CF outside the flexidag crate. # Test: Search for the constant in files outside flexidag/src # Expect: No matches outside flexidag/src rg 'DAG_BLOCK_DEPTH_INFO_STORE_CF' --glob '!flexidag/src/**'Length of output: 281
Script:
#!/bin/bash # Description: Find usages of DAG_BLOCK_DEPTH_INFO_STORE_CF outside the flexidag/src directory. # Search for the constant in files outside flexidag/src rg 'DAG_BLOCK_DEPTH_INFO_STORE_CF' --glob '!flexidag/src/**' --no-filenameLength of output: 74
flexidag/src/block_depth/block_depth_info.rs (1)
111-126: Verify the correctness of thekosherizing_bluesmethodEnsure that the
kosherizing_bluesmethod correctly filters blues based on themerge_depth_root.Run the following script to check the implementation:
flexidag/src/prune/pruning_point_manager.rs (1)
100-100: Efficient Loop Control with Pruning Depth CheckThe added condition appropriately enhances the pruning logic by breaking the loop when the blue score difference is less than the pruning depth. This ensures that unnecessary iterations are avoided, improving performance.
sync/src/parallel/executor.rs (2)
3-3: ImportDagVerifierForSyncto align with synchronization logicThe import statement now includes
DagVerifierForSync, which aligns with the updated verification logic for synchronization processes.
171-171: EnsureDagVerifierForSyncmeets all verification requirements during synchronizationThe
apply_with_verifiermethod has been updated to useDagVerifierForSync. Verify that this verifier correctly handles all necessary checks and validations required during the block synchronization process, and that any differences from the previous verifier are intentional and accounted for.chain/src/verifier/mod.rs (1)
447-449: Verify the intentional difference inverify_unclesimplementationsIn
DagVerifierForMining, theverify_unclesmethod callscurrent_chain.merge_check_and_ghostdata, whereas inDagVerifierForSync, it callsBasicDagVerifier::verify_blue_blocks. Ensure that this difference is intentional and aligns with the desired behavior for mining and syncing processes. If so, consider adding comments to clarify the reason for this divergence to aid future maintainability.sync/src/block_connector/block_connector_service.rs (4)
19-19: ImportingG_MERGE_DEPTHConstantThe constant
G_MERGE_DEPTHis correctly imported fromgenesis_configand is utilized appropriately in the code.
388-389: Correct Use of Mutable VariablestipsandghostdataDeclaring
tipsandghostdataas mutable allows for their reassignment after processing, which is necessary for the subsequent operations.
418-418: Retrieval ofghostdatafrom DAGThe assignment of
ghostdatausingdag.ghostdata(&tips)?correctly obtains the necessary data from the DAG based on the currenttips.
427-433: Correct Invocation ofremove_bounded_merge_breaking_parentsThe function
dag.remove_bounded_merge_breaking_parentsis called with the appropriate parameters, includingG_MERGE_DEPTH, to remove red blocks during mining. The reassignment oftipsandghostdataensures that the updated DAG state is used in subsequent operations.sync/src/block_connector/write_block_chain.rs (1)
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251-261: Appropriate use ofDagVerifierForMiningfor DAG chain verificationIn the
apply_failedmethod, switching toDagVerifierForMiningwhen the chain type isChainType::Dagis appropriate. This ensures that the block verification aligns with the mining context in DAG chains.flexidag/src/blockdag.rs (2)
626-680: Cachekosherizing_bluesto optimize performanceIn the
check_bounded_merge_depthmethod,kosherizing_bluesis computed and potentially reused in the loop. Ensure that it's only computed once when needed.[performance]
The current implementation correctly initializes
kosherizing_blueslazily, but consider confirming that this optimization aligns with performance expectations, especially in high-load scenarios.Run the following script to analyze the frequency of
kosherizing_bluescomputation:#!/bin/bash # Description: Ensure `kosherizing_blues` is computed only when necessary # Expected: Verify that `kosherizing_blues` is initialized only once per method call rg 'if kosherizing_blues.is_none\(\)' -A 5 -B 2
93-97: Ensure consistent instantiation ofBlockDepthManagerWhen creating the
block_depth_manager, consider the consistency of parameter usage, especially with regard to ownership and borrowing.Check if
BlockDepthManager::newrequires ownership or can accept references. Adjust the instantiation accordingly to avoid unnecessary cloning.Run the following script to verify the method signature:
chain/src/chain.rs (6)
16-16: Usage ofG_MERGE_DEPTHandG_PRUNING_FINALITYconstantsThe addition of
G_MERGE_DEPTHandG_PRUNING_FINALITYfromstarcoin_config::genesis_configis appropriate and necessary for DAG verification logic.
1249-1249: Update verification to useDagVerifierForMiningThe
verifymethod now correctly usesDagVerifierForMiningfor block verification in the mining context.
1411-1462: Ensure accurate uncle verification inmerge_check_and_ghostdataThe method
merge_check_and_ghostdatacomparesmergeset_bluesfromnext_ghostdatawith the provideduncles. Verify that this comparison correctly validates the uncles to prevent inconsistencies.
1728-1730: Updateapplymethod to useDagVerifierForMiningThe
applymethod now correctly delegates toapply_with_verifierusingDagVerifierForMining, aligning block application with mining verification.
1735-1736: Updateapply_for_syncmethod to useDagVerifierForSyncThe
apply_for_syncmethod now correctly usesDagVerifierForSyncfor block application during synchronization processes.
339-342:⚠️ Potential issueHandle potential missing blocks without panicking
The use of
.expect("failed to get a block")can cause a panic if a block is not found. Consider handling theOptionresult to gracefully manage missing blocks.Apply this diff to handle errors without panicking:
- .map(|op_block| op_block.expect("failed to get a block")) + .map(|op_block| op_block.ok_or_else(|| format_err!("Failed to get block with hash {:?}", block))?)Likely invalid or redundant comment.
flexidag/tests/tests.rs (4)
23-23: Import ofU256is necessaryThe addition of
U256is required for handling thedifficultyparameter in the new functions.
788-788: Ensure parent hashes are correctly setAdding
.with_parents_hash(parents.clone())ensures that the block header correctly references its parent hashes, which is essential for accurate DAG construction in the tests.
791-791: Set default difficulty for consistencySetting a default difficulty with
.with_difficulty(100.into())ensures consistent difficulty across test blocks, which enhances test predictability.
1345-1608: Test implementation looks goodThe
test_merge_boundedfunction correctly implements the intended test scenarios for merge depth and pruning point calculations, enhancing the test coverage of the DAG's behavior.
| if deleted_chain.is_empty() { | ||
| for candidate in ready_to_delete.into_iter() { | ||
| self.storage.delete_block(candidate)?; | ||
| self.storage.delete_block_info(candidate)?; | ||
| } | ||
| break; |
There was a problem hiding this comment.
🛠️ Refactor suggestion
Move block deletion outside the loop for clarity
Currently, block deletion is performed inside the loop, which can be a bit confusing. Consider moving the deletion of blocks outside the loop after it concludes for better readability and to ensure that deletions happen after all candidates are collected.
Apply this diff:
if deleted_chain.is_empty() {
- for candidate in ready_to_delete.into_iter() {
- self.storage.delete_block(candidate)?;
- self.storage.delete_block_info(candidate)?;
- }
break;
}
}
+ for candidate in ready_to_delete.into_iter() {
+ self.storage.delete_block(candidate)?;
+ self.storage.delete_block_info(candidate)?;
+ }📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| if deleted_chain.is_empty() { | |
| for candidate in ready_to_delete.into_iter() { | |
| self.storage.delete_block(candidate)?; | |
| self.storage.delete_block_info(candidate)?; | |
| } | |
| break; | |
| if deleted_chain.is_empty() { | |
| break; | |
| } | |
| } | |
| for candidate in ready_to_delete.into_iter() { | |
| self.storage.delete_block(candidate)?; | |
| self.storage.delete_block_info(candidate)?; | |
| } |
flexidag/src/blockdag.rs
Outdated
| pub fn save_dag_state_directly(&self, hash: Hash, state: DagState) -> anyhow::Result<()> { | ||
| self.storage.state_store.write().insert(hash, state)?; | ||
| anyhow::Ok(()) | ||
| } |
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🛠️ Refactor suggestion
Consolidate save_dag_state methods to avoid redundancy
The introduction of save_dag_state_directly may cause confusion as there are now two methods (save_dag_state and save_dag_state_directly) that perform similar functions. This can lead to maintenance challenges and potential misuse.
Consider merging save_dag_state_directly into save_dag_state or clearly documenting the differences between the two methods. If both are necessary, ensure that their purposes are distinctly defined.
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Actionable comments posted: 3
🧹 Outside diff range and nitpick comments (12)
chain/api/src/chain.rs (1)
117-121: Approve new method with suggestions for improvementThe addition of
merge_check_and_ghostdatamethod to theChainReadertrait is approved. It aligns with the PR objective of modifying the behavior of red blocks during the mining process.However, to improve code clarity and maintainability:
Please add documentation comments to explain the purpose and behavior of this new method, including any differences from the existing
verify_and_ghostdatamethod.Consider clarifying the relationship between
merge_check_and_ghostdataandverify_and_ghostdata. Are there scenarios where one should be used over the other? This information would be valuable in the documentation.Would you like assistance in drafting the documentation for this new method?
chain/src/verifier/mod.rs (3)
Line range hint
429-449: LGTM. Consider adding documentation for clarity.The implementation of
DagVerifierForMininglooks good and aligns with the PR objective. The use ofmerge_check_and_ghostdatafor uncle verification during mining operations is a notable change.Consider adding documentation to explain the purpose of this struct and how it differs from other verifiers, especially its mining-specific behavior.
Line range hint
453-474: LGTM. Consider adding documentation for clarity.The implementation of
DagVerifierForSynclooks good. It maintains the previous behavior for sync operations by usingverify_blue_blocksfor uncle verification.Consider adding documentation to explain the purpose of this struct and how it differs from
DagVerifierForMining, especially its sync-specific behavior.
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429-474: Summary: Separation of mining and sync verifiers aligns with PR objective.The introduction of
DagVerifierForMiningandDagVerifierForSynceffectively separates the verification processes for mining and syncing operations. This change aligns well with the PR objective of removing merge red blocks when mining.Key points:
DagVerifierForMininguses a newmerge_check_and_ghostdatamethod, potentially improving mining efficiency.DagVerifierForSyncmaintains the previous behavior, ensuring stability for sync operations.- This separation allows for targeted optimizations in the mining process without affecting sync behavior.
While the implementation looks sound, consider the following recommendations:
- Add comprehensive documentation to explain the rationale behind this separation and its expected benefits.
- Implement thorough testing to ensure that this change doesn't introduce inconsistencies in the blockchain state under various scenarios.
- Monitor the performance impact of this change, particularly in mining operations, to validate the expected improvements.
sync/src/block_connector/write_block_chain.rs (3)
Line range hint
251-261: LGTM! Consider enhancing error handling.The changes to use
DagVerifierForMiningfor DAG chain type are appropriate and align with the overall shift towards DAG-based verification.Consider enhancing the error handling in the
bail!statement to provide more context:- bail!("In test case, return a failure intentionally to force sync to reconnect the block"); + bail!("Test case: Intentional failure to force sync reconnection. Chain type: {:?}", self.main.check_chain_type()?);This change would provide more information about the chain type during testing, potentially aiding in debugging.
Line range hint
420-487: Approve changes, but refactor needed for code duplication.The enhancements to the
resetmethod for handling DAG state and pruning points are valuable improvements. However, there's a significant code duplication that needs to be addressed.The code block from lines 462-487 is an exact duplicate of the block from lines 420-445. To improve maintainability and reduce the risk of inconsistencies, consider refactoring this duplicated logic into a separate method. Here's a suggested refactor:
fn update_dag_state(&mut self, new_head_block: &Block) -> Result<()> { if new_head_block.header().pruning_point() == HashValue::zero() { let genesis = self .main .get_storage() .get_genesis()? .ok_or_else(|| format_err!("Cannot get the genesis in storage!"))?; self.main.dag().save_dag_state_directly( genesis, DagState { tips: vec![new_head_block.header().id()], }, )?; self.main.dag().save_dag_state_directly( HashValue::zero(), DagState { tips: vec![new_head_block.header().id()], }, )?; } else { self.main.dag().save_dag_state_directly( new_head_block.header().pruning_point(), DagState { tips: vec![new_head_block.header().id()], }, )?; } Ok(()) }Then, replace both duplicated blocks with a call to this new method:
self.update_dag_state(&new_head_block)?;This refactoring will make the code more maintainable and reduce the risk of inconsistencies if changes are needed in the future.
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1-788: Overall changes enhance DAG functionality while maintaining compatibility.The modifications in this file successfully integrate DAG-based chain management while preserving compatibility with the existing single-chain structure. The changes are consistent with the project's direction and enhance the system's flexibility in handling different chain types.
As the project continues to evolve towards DAG-based structures, consider the following architectural suggestions:
Create separate traits or interfaces for DAG-specific and single-chain-specific operations. This would allow for cleaner separation of concerns and potentially simplify future maintenance.
Implement a strategy pattern for chain type selection, which could reduce the number of conditional statements throughout the codebase and make it easier to add new chain types in the future.
Consider creating a dedicated DAG management module to encapsulate all DAG-related operations, improving modularity and making it easier to extend DAG functionality in the future.
These suggestions aim to improve the overall architecture as the project continues to evolve, making it more maintainable and extensible in the long run.
flexidag/src/blockdag.rs (2)
Line range hint
527-544: Consider enhancing error handling in calc_mergeset_and_tips.The changes to use
ghostdatainstead ofblue_blocksare consistent with updates elsewhere in the codebase. However, consider improving the error handling in this method. For example, you could use the?operator instead of unwrapping results, which would propagate errors more gracefully.Here's a suggested improvement for error handling:
- let ghostdata = self.ghost_dag_manager().ghostdag(&pruned_tips)?; + let ghostdata = self.ghost_dag_manager().ghostdag(&pruned_tips) + .map_err(|e| anyhow::anyhow!("Failed to calculate ghostdata: {}", e))?;This change would provide more context if an error occurs during the ghostdata calculation.
Line range hint
763-776: Consider optimizing is_ancestor_of method.The changes to return a
ReachabilityViewprovide more detailed information about block reachability. However, there's an opportunity to optimize the implementation.Consider using
filter_mapto combine the filtering and mapping operations:- let de = descendants - .into_iter() - .filter(|descendant| { - self.check_ancestor_of(ancestor, vec![*descendant]) - .unwrap_or(false) - }) - .collect::<Vec<_>>(); + let de = descendants + .into_iter() + .filter_map(|descendant| { + self.check_ancestor_of(ancestor, vec![descendant]) + .ok() + .and_then(|is_ancestor| if is_ancestor { Some(descendant) } else { None }) + }) + .collect::<Vec<_>>();This change combines the
filterandmapoperations into a singlefilter_map, potentially improving performance. It also handles theResultfromcheck_ancestor_ofmore explicitly.flexidag/tests/tests.rs (3)
742-775: LGTM! Consider adding debug logging.The new function
add_and_print_with_pruning_point_and_difficultyis a well-structured addition that enhances the testing capabilities by allowing specification of block difficulty. It follows the existing pattern and integrates well with the codebase.For consistency with other similar functions, consider adding debug logging for the ghostdata after committing the block. You can uncomment and adapt the commented-out println! statements at lines 768-773.
788-791: LGTM! Consider consistency in commented code.The addition of a default difficulty and the cleanup of commented-out code improve the function.
For consistency, consider either removing the commented-out ghostdata-related code in the
add_and_print_with_pruning_point_and_difficultyfunction as well, or keeping it in both functions if it might be useful for future debugging.Also applies to: 802-803
1346-1608: LGTM! Comprehensive test for bounded merge functionality.The
test_merge_boundedfunction is a well-structured and thorough test of the BlockDAG's bounded merge functionality. It covers various scenarios and verifies the behavior of the DAG under different conditions.Consider the following suggestions to improve readability and maintainability:
- Add comments to explain the purpose of each major section of the test (e.g., "Setup initial DAG structure", "Test pruning point calculation", etc.).
- Consider breaking down the test into smaller, more focused test functions to improve maintainability and make it easier to identify which specific functionality fails if the test doesn't pass.
- Use constants for repeated values like
k,pruning_depth,pruning_finality, andmerge_depthto make the test more maintainable.- Add assertions with descriptive messages to make it clearer what each assertion is checking.
Example of adding a constant and improving an assertion:
- let merge_depth = 3; + const MERGE_DEPTH: u64 = 3; - assert_eq!(tips, vec![block_main_6.id()]); + assert_eq!(tips, vec![block_main_6.id()], "Expected only block_main_6 to remain after removing bounded merge breaking parents");
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
📒 Files selected for processing (18)
- chain/api/src/chain.rs (1 hunks)
- chain/mock/src/mock_chain.rs (2 hunks)
- chain/src/chain.rs (10 hunks)
- chain/src/verifier/mod.rs (2 hunks)
- config/src/genesis_config.rs (1 hunks)
- flexidag/src/block_depth/block_depth_info.rs (1 hunks)
- flexidag/src/block_depth/mod.rs (1 hunks)
- flexidag/src/blockdag.rs (8 hunks)
- flexidag/src/consensusdb/consensus_block_depth.rs (1 hunks)
- flexidag/src/consensusdb/db.rs (4 hunks)
- flexidag/src/consensusdb/mod.rs (1 hunks)
- flexidag/src/lib.rs (1 hunks)
- flexidag/src/prune/pruning_point_manager.rs (1 hunks)
- flexidag/tests/tests.rs (7 hunks)
- sync/src/block_connector/block_connector_service.rs (4 hunks)
- sync/src/block_connector/write_block_chain.rs (4 hunks)
- sync/src/parallel/executor.rs (2 hunks)
- sync/src/tasks/block_sync_task.rs (1 hunks)
🚧 Files skipped from review as they are similar to previous changes (11)
- chain/mock/src/mock_chain.rs
- config/src/genesis_config.rs
- flexidag/src/block_depth/block_depth_info.rs
- flexidag/src/block_depth/mod.rs
- flexidag/src/consensusdb/consensus_block_depth.rs
- flexidag/src/consensusdb/db.rs
- flexidag/src/consensusdb/mod.rs
- flexidag/src/lib.rs
- flexidag/src/prune/pruning_point_manager.rs
- sync/src/block_connector/block_connector_service.rs
- sync/src/tasks/block_sync_task.rs
🧰 Additional context used
🔇 Additional comments (14)
sync/src/parallel/executor.rs (4)
Line range hint
63-81: Improved parent block validation inwaiting_for_parentsGreat improvements to the
waiting_for_parentsmethod:
- The addition of the
storageparameter allows for more comprehensive parent block validation.- The new logic enhances robustness by ensuring both block header and info exist in storage.
- This change effectively addresses the previous suggestion about utilizing
self.storage.The implementation looks solid and improves the overall reliability of the parent block checking process.
Line range hint
1-234: Summary of changes insync/src/parallel/executor.rsThe changes in this file are part of a larger refactoring effort to rename and update verifier types. Key improvements include:
- Consistent renaming of
DagVerifierWithGhostDatatoDagVerifierForSync.- Enhanced
waiting_for_parentsmethod with improved parent block validation.- Updated
apply_with_verifiercall instart_to_executemethod.These changes improve code consistency and robustness. The refactoring seems well-executed, but ensure that all related changes across the codebase are consistent and that the new verifier type is fully compatible with existing interfaces.
171-171: Verify compatibility ofDagVerifierForSyncinapply_with_verifierThe change from
DagVerifierWithGhostDatatoDagVerifierForSyncin theapply_with_verifiercall is consistent with the import statement update.To ensure compatibility, let's verify the interface of
DagVerifierForSync:✅ Verification successful
DagVerifierForSync is compatible with
apply_with_verifierThe implementation of
DagVerifierForSyncaligns with the required interface, ensuring compatibility with the updatedapply_with_verifiercall.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for the definition of DagVerifierForSync ast-grep --pattern $'struct DagVerifierForSync { $$$ }' # Search for the implementation of DagVerifierForSync ast-grep --pattern $'impl $_ for DagVerifierForSync { $$$ }'Length of output: 1399
3-3: Verify consistent renaming of verifier types across the codebase.The change from
DagVerifierWithGhostDatatoDagVerifierForSynclooks good and aligns with the refactoring mentioned in the summary.To ensure consistency, let's verify this renaming across the codebase:
✅ Verification successful
Renaming of
DagVerifierWithGhostDatatoDagVerifierForSyncis consistent across the codebase.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Search for any remaining instances of DagVerifierWithGhostData rg "DagVerifierWithGhostData" # Search for usage of DagVerifierForSync rg "DagVerifierForSync"Length of output: 589
chain/src/verifier/mod.rs (1)
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429-474: Verify the impact of different uncle verification strategies.The separation of
DagVerifierForMiningandDagVerifierForSyncwith different uncle verification strategies is a significant change. While this aligns with the PR objective of removing merge red blocks when mining, it's important to ensure that this separation doesn't introduce inconsistencies in the blockchain state.Please run the following script to verify the usage and impact of these new verifiers:
This script will help ensure that the new verifiers are used correctly and consistently throughout the codebase.
✅ Verification successful
Verified: The separation of
DagVerifierForMiningandDagVerifierForSyncis correctly implemented without introducing inconsistencies in the blockchain state. All usages have been appropriately updated, and no ghostdata inconsistencies were detected.🏁 Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the usage of new verifiers and their impact # Test 1: Check for any remaining uses of the old DagVerifier echo "Checking for remaining uses of old DagVerifier:" rg "DagVerifier[^F]" --type rust # Test 2: Verify that DagVerifierForMining is used in mining-related code echo "Verifying DagVerifierForMining usage:" rg "DagVerifierForMining" --type rust -C 5 # Test 3: Verify that DagVerifierForSync is used in sync-related code echo "Verifying DagVerifierForSync usage:" rg "DagVerifierForSync" --type rust -C 5 # Test 4: Check for any potential inconsistencies in ghostdata handling echo "Checking for potential ghostdata inconsistencies:" rg "ghostdata" --type rust -C 5Length of output: 103520
flexidag/src/blockdag.rs (4)
3-9: LGTM: New imports and type definitions for block depth management.The added imports and type definitions are consistent with the introduction of block depth management functionality. They provide a clear structure for the new features being implemented.
Line range hint
47-61: LGTM: Addition of block_depth_manager to BlockDAG struct.The addition of the
block_depth_managerfield to theBlockDAGstruct is consistent with the new block depth management functionality. This change enhances the capabilities of theBlockDAGfor managing block depths.
93-97: LGTM: Proper initialization of block_depth_manager in BlockDAG::new.The
block_depth_manageris correctly initialized in thenewmethod, using the appropriate stores and services. This ensures that the new block depth management functionality is properly set up when creating a newBlockDAGinstance.
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1-776: Overall assessment: Significant enhancements with room for minor improvements.The changes to
blockdag.rsintroduce important functionality for block depth management and bounded merge depth checks. These additions should improve the DAG's integrity and performance. While the implementation is generally solid, there are opportunities for enhancing error handling, improving logging, and optimizing some operations as noted in the specific comments.Key points:
- New block depth management functionality is well-integrated.
- Bounded merge depth checks add important verification logic.
- Some methods could benefit from improved error handling and logging.
- There are opportunities for performance optimization in some methods.
These changes represent a significant step forward in the DAG's capabilities, with minor refinements recommended for robustness and efficiency.
chain/src/chain.rs (5)
322-333: Duplicate comment from previous reviewThe issues in this code segment have been previously addressed.
1249-1249: Confirm appropriate use ofDagVerifierForMiningThe
verifymethod now utilizesDagVerifierForMining::verify_block(self, block), which is suitable for mining operations. Ensure thatDagVerifierForMiningis correctly implemented and this change aligns with the intended verification strategy.
1453-1460: Validate merge depth and pruning parametersThe call to
self.dag().check_bounded_merge_depthuses constantsG_MERGE_DEPTHandG_PRUNING_FINALITY. Verify that these constants are correctly defined and appropriately configured for the chain's consensus rules to prevent potential synchronization issues.
1683-1710: Duplicate comment from previous reviewThe concerns regarding error handling in
verify_pruning_pointhave been previously noted.
1728-1735: Confirm verifier update inapplyandapply_for_syncmethodsThe
applymethod now usesDagVerifierForMining, andapply_for_syncusesDagVerifierForSync. Ensure that these verifiers are correctly implemented and that their usage aligns with the intended functionality for mining and synchronization contexts.
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