Synchronize optimization into parallel processing, and replace the calculation of ghost data with validation methods during synchronization to improve efficiency #4192
Conversation
WalkthroughThe changes encompass significant modifications across multiple files in the blockchain project, focusing on enhancing block verification, synchronization, and parallel processing capabilities. Key updates include the introduction of new methods for verifying ghost data, improvements to the Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant ChainReader
participant Ghostdag
participant ChainWriter
participant BlockDAG
User->>ChainReader: verify_and_ghostdata(uncles, header)
ChainReader->>Ghostdag: verify_and_ghostdata(blue_blocks, header)
Ghostdag->>ChainReader: return GhostdagData
ChainReader->>User: return GhostdagData
User->>ChainWriter: apply_for_sync(block)
ChainWriter->>BlockDAG: commit_trusted_block(header, origin, trusted_ghostdata)
BlockDAG->>ChainWriter: confirmation of block commit
ChainWriter->>User: confirmation of block application
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Actionable comments posted: 1
Outside diff range, codebase verification and nitpick comments (3)
chain/src/verifier/mod.rs (1)
Line range hint
343-438: LGTM with a suggestion!The code changes look good overall. The new
BasicDagVerifierandDagVerifierWithGhostDatastructs are implemented correctly.However, the
DagVerifierstruct is marked as TODO, indicating it's not fully implemented yet.Consider completing the implementation of
DagVerifieror removing it if it's not needed.flexidag/src/consensusdb/consensus_reachability.rs (1)
53-53: Visibility change impacts codebase encapsulationThe change in visibility of the constant
REACHABILITY_DATA_CFfrompub(crate)topuballows it to be accessed in thesync/src/store/sync_dag_store.rsfile, which is outside its defining module. This impacts the encapsulation of the module's internal workings by enabling external modules to depend on this constant.
sync/src/store/sync_dag_store.rs: UsesREACHABILITY_DATA_CF, indicating cross-module access.Analysis chain
Verify the impact of making the constant public on the codebase.
The visibility of the constant
REACHABILITY_DATA_CFis changed frompub(crate)topub, making it publicly accessible outside the defining module. This change potentially affects the encapsulation of the module's internal workings.Run the following script to verify the usage of the constant in the codebase:
Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the usage of the constant `REACHABILITY_DATA_CF` in the codebase. # Test: Search for the usage of the constant. Expect: No usage outside the defining module. rg --type rust $'REACHABILITY_DATA_CF'Length of output: 822
sync/src/tasks/block_sync_task.rs (1)
475-497: Consider removing the commented code segment.The commented code segment appears to be an old implementation that is no longer needed. To improve code readability and maintainability, it is recommended to remove the commented code.
Apply this diff to remove the commented code segment:
-// let sync_dag_store = self.sync_dag_store.clone(); -// let mut absent_block_iter = sync_dag_store -// .iter_at_first() -// .context("Failed to create iterator for sync_dag_store")?; -// loop { -// debug!("start to read local absent block and try to execute the dag if its parents are ready."); -// let mut local_absent_block = vec![]; -// match self.read_local_absent_block(&mut absent_block_iter, &mut local_absent_block) -// { -// anyhow::Result::Ok(_) => { -// if local_absent_block.is_empty() { -// info!("absent block is empty, continue to sync"); -// break; -// } -// self.execute_absent_block(&mut local_absent_block) -// .context("Failed to execute absent block")?; -// } -// Err(e) => { -// error!("failed to read local absent block, error: {:?}", e); -// return Err(e); -// } -// } -// }
Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (21)
- chain/api/src/chain.rs (4 hunks)
- chain/src/chain.rs (7 hunks)
- chain/src/verifier/mod.rs (7 hunks)
- flexidag/src/blockdag.rs (4 hunks)
- flexidag/src/consensusdb/consensus_reachability.rs (1 hunks)
- flexidag/src/ghostdag/protocol.rs (3 hunks)
- flexidag/src/reachability/inquirer.rs (1 hunks)
- flexidag/src/types/ghostdata.rs (2 hunks)
- flexidag/tests/tests.rs (3 hunks)
- sync/Cargo.toml (1 hunks)
- sync/src/lib.rs (1 hunks)
- sync/src/parallel/executor.rs (1 hunks)
- sync/src/parallel/mod.rs (1 hunks)
- sync/src/parallel/sender.rs (1 hunks)
- sync/src/store/sync_dag_store.rs (4 hunks)
- sync/src/store/tests.rs (3 hunks)
- sync/src/sync.rs (5 hunks)
- sync/src/tasks/block_sync_task.rs (8 hunks)
- sync/src/tasks/inner_sync_task.rs (1 hunks)
- sync/src/tasks/mock.rs (1 hunks)
- sync/src/tasks/mod.rs (1 hunks)
Files skipped from review due to trivial changes (1)
- sync/src/tasks/mock.rs
Additional comments not posted (57)
sync/src/parallel/mod.rs (1)
1-2: LGTM!The code changes are approved.
sync/src/lib.rs (1)
14-14: LGTM!The addition of the
parallelmodule is a good change as it can potentially improve performance or scalability in tasks that can benefit from parallel execution. The module is declared as public, which is appropriate if it is intended to be used by other modules or crates. The module is added at the end of the file, which is a good practice for organizing module declarations. The module name is descriptive and follows the Rust naming convention.sync/Cargo.toml (1)
51-51: LGTM!The addition of the
tokiodependency with the"full"feature flag is approved. This change enables the project to leverage asynchronous features and functionalities provided bytokio, potentially improving performance or enabling new features that require asynchronous processing.flexidag/src/types/ghostdata.rs (2)
6-6: LGTM!The addition of
PartialEqandEqtraits to the derive attributes ofGhostdagDatais a useful change that enables equality comparisons. This can be beneficial in various scenarios, such as implementing algorithms that rely on equality checks or storing instances in collections. The change does not introduce any issues or alter the existing fields.
17-17: LGTM!The addition of
PartialEqandEqtraits to the derive attributes ofCompactGhostdagDatais a useful change that enables equality comparisons. This can be beneficial in various scenarios, such as implementing algorithms that rely on equality checks or storing instances in collections. The change does not introduce any issues or alter the existing fields.sync/src/store/sync_dag_store.rs (4)
4-4: LGTM!The import of
RwLockfromparking_lotis a good addition for improved concurrency control.
7-7: LGTM!The additional imports related to reachability data suggest an enhancement to the database's functionality, which is a positive change.
68-68: LGTM!The inclusion of
REACHABILITY_DATA_CFin the list of column families is a significant enhancement, enabling the database to manage reachability data efficiently.
77-77: LGTM!Passing a cloned reference of the database to
SyncAbsentBlockStoreis a good practice to ensure proper management of database connections and prevent potential issues related to shared mutable state.chain/api/src/chain.rs (3)
26-29: LGTM!The changes to the
VerifiedBlockstruct improve its clarity and readability by using named fields instead of a tuple. The addition of theghostdatafield provides a way to associate ghost data with the block, while usingOptionallows for cases where the ghost data may not be present.
112-112: LGTM!The addition of the
verify_and_ghostdatamethod to theChainReadertrait is a good enhancement. It provides a way to verify block headers and retrieve their associated ghost data in a single operation. Returning aResultallows for proper error handling.
123-124: Verify the purpose and usage of theapply_for_syncmethod.The addition of the
apply_for_syncmethod to theChainWritertrait raises a few questions:
- What is the specific purpose of this method compared to the existing
applymethod?- In what scenarios or conditions should this method be used instead of
apply?- Are there any differences in the verification, execution, or connection logic between
applyandapply_for_sync?Providing more context or documentation about the intended usage and behavior of this method would be helpful for maintainers and future contributors.
sync/src/parallel/sender.rs (6)
17-22: LGTM!The struct definition is approved.
24-33: LGTM!The struct definition is approved.
36-55: LGTM!The constructor method is approved.
57-88: LGTM!The method implementation is approved.
90-132: LGTM!The method implementation is approved.
134-183: LGTM!The method implementations are approved.
sync/src/tasks/inner_sync_task.rs (1)
161-185: Verify the impact of disabling the absent block processing loop.The entire loop that processes absent blocks has been commented out. This change removes the logic for:
- Reading local absent blocks from
self.sync_dag_store.- Executing the absent blocks.
- Handling errors related to these operations.
Please verify the following:
- Ensure that the synchronization process still functions correctly without this logic. Consider generating a script to test the synchronization with the loop disabled.
- Confirm if the call to
self.sync_dag_store.delete_all_dag_sync_block()at line 187 is still needed, given that the preceding loop has been disabled.Verification successful
Impact of Disabling Absent Block Processing Loop
The loop that processes absent blocks has been commented out, effectively disabling this functionality. The methods
read_local_absent_blockandexecute_absent_blockare not used elsewhere, confirming that this logic is currently inactive. However, thedelete_all_dag_sync_blockmethod is still used in other parts of the codebase, indicating its broader relevance.
- The synchronization process might still function correctly if other mechanisms handle absent blocks or if this functionality is temporarily disabled.
- The
delete_all_dag_sync_blockmethod remains necessary in other contexts, even if its call ininner_sync_task.rsis commented out.Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the impact of disabling the absent block processing loop. # Test 1: Search for the usage of the `read_local_absent_block` and `execute_absent_block` methods. # Expect: No other usage of these methods, confirming that the disabled loop was the only place they were used. rg --type rust -A 5 $'read_local_absent_block|execute_absent_block' # Test 2: Search for the usage of the `delete_all_dag_sync_block` method. # Expect: The method is only called at line 187, indicating that it may no longer be necessary without the preceding loop. rg --type rust -A 5 $'delete_all_dag_sync_block'Length of output: 9357
sync/src/store/tests.rs (4)
1-5: LGTM!The code changes are approved.
10-15: LGTM!The code changes are approved.
83-83: LGTM!The code changes are approved.
155-155: LGTM!The code changes are approved.
sync/src/parallel/executor.rs (1)
25-32: LGTM!The code changes are approved.
flexidag/src/reachability/inquirer.rs (1)
Line range hint
21-29: Visibility ofinit_with_paramschanged frompub(super)topub.This change makes the function accessible from any module within the crate.
Please verify that this increased visibility is intended and assess its impact on the codebase:
Verification successful
Visibility change of
init_with_paramshas no immediate impact.The function
init_with_paramsis not currently used outside its original module and submodules, indicating that the change topubvisibility has no immediate effect on the codebase. However, ensure that this change aligns with the intended design and consider its implications for future usage.Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the impact of changing the visibility of `init_with_params` to `pub`. # Test: Search for usages of the function outside the current module and its submodules. # Expect: Only intended usages, if any. rg --type rust $'init_with_params' --glob '!flexidag/src/reachability/**'Length of output: 72
chain/src/verifier/mod.rs (4)
10-10: LGTM!The code changes are approved.
80-89: LGTM!The code changes are approved.
Line range hint
108-170: LGTM!The code changes are approved.
325-339: LGTM!The code changes are approved.
flexidag/src/blockdag.rs (6)
15-15: LGTM!The code change is approved.
29-30: LGTM!The code changes are approved.
148-266: LGTM! Thecommit_trusted_blockmethod looks good overall.The method is well-structured and includes necessary checks and logging for committing a block with associated trusted ghost data.
173-176: Verify error handling in the calling code.The method raises errors with descriptive messages if discrepancies are found in the ghost data. Ensure that these errors are handled appropriately in the calling code.
231-232: Verify the usage ofset_reindex_rootmethod.The method uses the
set_reindex_rootmethod to set the reindex key to the origin in certain error scenarios. Ensure that this is the correct behavior and doesn't have any unintended consequences.
545-551: LGTM!The code changes are approved. The new methods
reachability_storeandverify_and_ghostdataenhance the functionality of theBlockDAGby allowing external access to critical components and verification processes.flexidag/src/ghostdag/protocol.rs (4)
5-5: LGTM!The code changes are approved.
11-11: LGTM!The code changes are approved.
174-238: LGTM!The code changes are approved. The function includes robust verification methods that ensure the integrity and correctness of the ghost data structure.
309-357: LGTM!The code changes are approved. The function includes robust verification methods that ensure the consistency of the ghost data structure.
sync/src/tasks/block_sync_task.rs (5)
35-38: LGTM!The new
ParallelSignenum provides a clear way to represent the state of block processing. It enhances code readability and maintainability.
357-357: Please provide more context on the change fromapply_with_verifiertoapply_for_sync.What is the rationale behind using
apply_for_syncinstead ofapply_with_verifierduring block synchronization? Are there any potential implications or risks associated with this change?
402-408: LGTM!The code segment correctly checks for the existence of parent blocks in both the local store and the chain. If any parent block is missing, it is added to the
absent_blocksvector for further processing. This helps maintain the integrity of the block hierarchy during synchronization.
Line range hint
437-472: LGTM!The modifications to the
ensure_dag_parent_blocks_existfunction introduce parallel execution for certain blocks based on their block number, which can potentially improve the efficiency of block synchronization. The function also returns aParallelSignenum to indicate whether more blocks are needed or if the block has been executed. The code segment is well-structured and follows a clear logic flow.
Line range hint
626-658: LGTM!The code segment handles the result of
ensure_dag_parent_blocks_existbased on the returnedParallelSignenum. It follows a clear logic flow and handles different scenarios appropriately:
- If more blocks are needed (
ParallelSign::NeedMoreBlocks), it returns early to indicate that the collector needs more blocks.- If the block has been executed (
ParallelSign::Executed), it proceeds with further processing.- If the block already exists in the chain, it retrieves the current block and notifies the connected block.
- The
block_infoassignment is based on the block's existence in the chain.Overall, the code segment is well-structured and handles the different cases effectively.
sync/src/sync.rs (2)
229-235: LGTM!The changes streamline the
SyncServiceby reducing its state complexity and modifying howsync_dag_storeis instantiated and utilized.
621-633: Verify the impact of removing theSaveSyncBlockevent handler.The code related to the
SaveSyncBlockstruct and its event handler implementation has been commented out, indicating a potential deprecation or removal of functionality.To ensure this removal does not introduce any issues, please verify the following:
- Search the codebase for any references to the
SaveSyncBlockstruct or its usage.- Ensure that the functionality related to saving blocks during the synchronization process is properly handled elsewhere or is no longer required.
- Confirm that removing this event handler does not affect the overall synchronization flow or introduce any inconsistencies.
Run the following script to search for references to
SaveSyncBlock:If the verification confirms that removing the
SaveSyncBlockevent handler is safe, consider removing the commented-out code to keep the codebase clean. Otherwise, provide a clear explanation for keeping the commented-out code.Verification successful
No impact from removing the
SaveSyncBlockevent handler.The
SaveSyncBlockstruct and its event handler implementation are not referenced elsewhere in the codebase, indicating that commenting out this code does not affect other parts of the system. If the functionality related to saving blocks is no longer required, consider removing the commented-out code to maintain a clean codebase. Otherwise, provide a clear explanation for keeping it commented out.Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Search for references to the `SaveSyncBlock` struct or its usage. # Test: Search for the struct definition. Expect: Only the commented out definition. rg --type rust 'struct SaveSyncBlock' # Test: Search for usage of the struct. Expect: Only the commented out usage, if any. rg --type rust 'SaveSyncBlock'Length of output: 347
sync/src/tasks/mod.rs (1)
592-592: LGTM!The code change that makes the
continue_execute_absent_blockmodule public is approved.flexidag/tests/tests.rs (4)
7-12: LGTM!The code changes are approved.
15-18: LGTM!The code changes are approved.
698-727: LGTM!The code changes are approved.
977-1117: LGTM!The code changes are approved. The expanded test function covers important scenarios and helps ensure the correctness of the DAG implementation.
chain/src/chain.rs (6)
4-4: LGTM!The addition of the new import
DagVerifierWithGhostDatais approved.
461-462: LGTM!The addition of the
info!log statements to track the execution of DAG blocks is approved.
648-655: Verify the impact of ignoring theKeyAlreadyExistserror.The changes to the
commitlogic based on the presence ofghostdatalook good. However, please verify the behavior and impact of ignoring theKeyAlreadyExistserror case. Ensure that ignoring this error does not lead to any unintended consequences or inconsistencies in the DAG state.
1218-1218: Verify the correctness of theDagVerifier::verify_blockmethod.The change to use
DagVerifier::verify_blockinstead ofverify_headerin theverifymethod is approved. However, please ensure that theDagVerifier::verify_blockmethod correctly handles the block verification process and returns the expectedVerifiedBlockresult. This will help maintain the integrity of the verification process.
1356-1358: Verify the correctness of thedag.verify_and_ghostdatamethod.The addition of the
verify_and_ghostdatamethod to theChainReadertrait implementation is approved. However, please ensure that thedag.verify_and_ghostdatamethod, which is called internally, correctly handles the verification of blocks along with their associated ghost data. This will help maintain the integrity of the verification process.
1544-1546: Verify the correctness of theapply_with_verifiermethod withDagVerifierWithGhostData.The addition of the
apply_for_syncmethod to theChainWritertrait implementation is approved. However, please ensure that theapply_with_verifiermethod, which is called internally with theDagVerifierWithGhostDataverifier, correctly handles the block application process and returns the expectedExecutedBlockresult. This will help maintain the integrity of the block application process when using the new verifier.
sync/src/parallel/executor.rs
Outdated
| Ok(false) => tokio::task::yield_now().await, | ||
| Err(e) => { | ||
| error!( | ||
| "failed to check parents: {:?}, for reason: {:?}", | ||
| header, e | ||
| ); | ||
| match self | ||
| .sender | ||
| .send(ExecuteState::Error(header.clone())) | ||
| .await | ||
| { | ||
| Ok(_) => (), | ||
| Err(e) => { | ||
| error!("failed to send error state: {:?}, for reason: {:?}", header, e); | ||
| return; | ||
| } | ||
| } | ||
| return; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| match chain { | ||
| None => { | ||
| chain = match BlockChain::new(self.time_service.clone(), block.header().parent_hash(), self.storage.clone(), self.vm_metrics.clone(), self.dag.clone()) { | ||
| Ok(new_chain) => Some(new_chain), | ||
| Err(e) => { | ||
| error!("failed to create chain for block: {:?} for {:?}", block.header().id(), e); | ||
| return; | ||
| } | ||
| } | ||
| } | ||
| Some(old_chain) => { | ||
| if old_chain.status().head().id() != block.header().parent_hash(){ | ||
| chain = match old_chain.fork(block.header().parent_hash()) { | ||
| Ok(new_chain) => Some(new_chain), | ||
| Err(e) => { | ||
| error!("failed to fork in parallel for: {:?}", e); | ||
| return; | ||
| } | ||
| } | ||
| } else { | ||
| chain = Some(old_chain); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| info!("sync parallel worker {:p} will execute block: {:?}", &self, block.header().id()); | ||
| match chain.as_mut().expect("it cannot be none!").apply_with_verifier::<DagVerifierWithGhostData>(block) { | ||
| Ok(executed_block) => { | ||
| info!( | ||
| "succeed to execute block: number: {:?}, id: {:?}", | ||
| executed_block.header().number(), | ||
| executed_block.header().id() | ||
| ); | ||
| match self | ||
| .sender | ||
| .send(ExecuteState::Executed(executed_block)) | ||
| .await | ||
| { | ||
| Ok(_) => (), | ||
| Err(e) => { | ||
| error!( | ||
| "failed to send waiting state: {:?}, for reason: {:?}", | ||
| header, e | ||
| ); | ||
| return; | ||
| } | ||
| } | ||
| } | ||
| Err(e) => { | ||
| error!( | ||
| "failed to execute block: {:?}, for reason: {:?}", | ||
| header, e | ||
| ); | ||
| match self.sender.send(ExecuteState::Error(header.clone())).await { | ||
| Ok(_) => (), | ||
| Err(e) => { | ||
| error!( | ||
| "failed to send error state: {:?}, for reason: {:?}", | ||
| header, e | ||
| ); | ||
| return; | ||
| } | ||
| } | ||
| return; | ||
| } | ||
| } | ||
| } | ||
| None => { | ||
| info!("sync worker channel closed"); | ||
| drop(self.sender); | ||
| return; | ||
| } | ||
| } | ||
| } | ||
| }); | ||
|
|
||
| anyhow::Ok(handle) | ||
| } |
There was a problem hiding this comment.
Refactor start_to_execute method and improve error handling.
Consider refactoring the start_to_execute method to improve readability and maintainability:
- Extract the logic for waiting for parent blocks into a separate method.
- Extract the logic for creating or forking the
BlockChaininto a separate method. - Use more descriptive error messages and handle specific error cases.
Here's an example of how the method can be refactored:
pub fn start_to_execute(mut self) -> anyhow::Result<JoinHandle<()>> {
let handle = tokio::spawn(async move {
let mut chain = None;
loop {
match self.receiver.recv().await {
Some(block) => {
let header = block.header().clone();
self.wait_for_parent_blocks(&block).await?;
chain = self.create_or_fork_chain(chain, &block).await?;
info!("sync parallel worker {:p} will execute block: {:?}", &self, block.header().id());
match chain.as_mut().expect("it cannot be none!").apply_with_verifier::<DagVerifierWithGhostData>(block) {
Ok(executed_block) => {
info!(
"succeed to execute block: number: {:?}, id: {:?}",
executed_block.header().number(),
executed_block.header().id()
);
self.sender.send(ExecuteState::Executed(executed_block)).await?;
}
Err(e) => {
error!("failed to execute block: {:?}, error: {:?}", header, e);
self.sender.send(ExecuteState::Error(header.clone())).await?;
return Err(e);
}
}
}
None => {
info!("sync worker channel closed");
drop(self.sender);
return Ok(());
}
}
}
});
Ok(handle)
}
async fn wait_for_parent_blocks(&self, block: &Block) -> anyhow::Result<()> {
loop {
match Self::waiting_for_parents(&self.dag, block.header().parents_hash()) {
Ok(true) => return Ok(()),
Ok(false) => tokio::task::yield_now().await,
Err(e) => {
error!("failed to check parents: {:?}, error: {:?}", block.header(), e);
self.sender.send(ExecuteState::Error(block.header().clone())).await?;
return Err(e);
}
}
}
}
async fn create_or_fork_chain(
&mut self,
chain: Option<BlockChain>,
block: &Block,
) -> anyhow::Result<Option<BlockChain>> {
match chain {
None => {
let new_chain = BlockChain::new(
self.time_service.clone(),
block.header().parent_hash(),
self.storage.clone(),
self.vm_metrics.clone(),
self.dag.clone(),
)
.map_err(|e| anyhow::anyhow!("failed to create chain: {:?}", e))?;
Ok(Some(new_chain))
}
Some(mut old_chain) => {
if old_chain.status().head().id() != block.header().parent_hash() {
let new_chain = old_chain
.fork(block.header().parent_hash())
.map_err(|e| anyhow::anyhow!("failed to fork chain: {:?}", e))?;
Ok(Some(new_chain))
} else {
Ok(Some(old_chain))
}
}
}
}This refactoring improves the readability and maintainability of the code by:
- Extracting the logic for waiting for parent blocks into a separate method
wait_for_parent_blocks. - Extracting the logic for creating or forking the
BlockChaininto a separate methodcreate_or_fork_chain. - Using more descriptive error messages with
anyhow::anyhow!and handling specific error cases by returning the error from the method.
Please consider applying this refactoring to improve the code quality.
There was a problem hiding this comment.
Actionable comments posted: 0
Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (3)
- flexidag/src/ghostdag/protocol.rs (3 hunks)
- flexidag/src/types/ordering.rs (1 hunks)
- sync/src/parallel/sender.rs (1 hunks)
Files skipped from review as they are similar to previous changes (1)
- sync/src/parallel/sender.rs
Additional comments not posted (7)
flexidag/src/types/ordering.rs (5)
38-42: LGTM!The code changes are approved.
44-48: LGTM!The code changes are approved.
50-54: LGTM!The code changes are approved.
56-60: LGTM!The code changes are approved.
62-68: Verify the ordering ofblue_work.The
Ordimplementation forSortableBlockWithWorkTypecomparesblue_workin descending order, while theOrdimplementation forSortableBlockcomparesblue_workin ascending order.Please confirm if the ordering of
blue_workis intentional and provide the rationale for the change.flexidag/src/ghostdag/protocol.rs (2)
174-238: Thoroughly review the newverify_and_ghostdatafunction for correctness and performance.This is a significant addition to the ghostdag protocol implementation. Please ensure the following:
- The function correctly verifies the provided
blue_blocksandheaderand calculates the ghostdata.- The function handles all edge cases and error scenarios appropriately.
- The function is optimized for performance, especially when dealing with large datasets.
- The function follows best practices and maintains consistency with the existing codebase.
To verify the correctness and performance of the function, consider the following:
- Write comprehensive unit tests covering various scenarios, including edge cases and error conditions.
- Perform code profiling to identify any performance bottlenecks and optimize accordingly.
- Review the function's integration with the existing codebase and ensure it follows the established patterns and practices.
- Validate that the function correctly implements the intended ghostdag protocol logic.
Do you want me to provide more specific suggestions or open a GitHub issue to track these verification tasks?
309-357: Review the newcheck_ghostdata_blue_blockfunction for correctness and completeness.This function performs consistency checks on the provided
ghostdata. Please ensure the following:
- The function correctly constructs a new
GhostdagDatainstance based on the providedghostdata.- The function performs all necessary consistency checks between the provided
ghostdataand the newly constructed instance.- The function returns appropriate errors when inconsistencies are detected.
- The function covers all relevant scenarios and edge cases.
To verify the correctness and completeness of the function, consider the following:
- Write unit tests that cover various scenarios, including cases where the provided
ghostdatais consistent and cases where it is inconsistent.- Review the function's logic to ensure it performs all necessary checks and comparisons.
- Validate that the function returns appropriate errors when inconsistencies are detected.
- Ensure that the function handles edge cases and boundary conditions correctly.
Do you want me to provide more specific suggestions or open a GitHub issue to track these verification tasks?
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Files selected for processing (2)
- sync/src/parallel/executor.rs (1 hunks)
- sync/src/parallel/sender.rs (1 hunks)
Files skipped from review as they are similar to previous changes (2)
- sync/src/parallel/executor.rs
- sync/src/parallel/sender.rs
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Files selected for processing (2)
- flexidag/src/ghostdag/protocol.rs (3 hunks)
- flexidag/src/types/ordering.rs (1 hunks)
Files skipped from review as they are similar to previous changes (1)
- flexidag/src/types/ordering.rs
Additional comments not posted (5)
flexidag/src/ghostdag/protocol.rs (5)
5-5: LGTM!The code changes are approved.
11-11: LGTM!The code changes are approved.
174-307: LGTM!The new
verify_and_ghostdatamethod is well-implemented and follows the necessary steps to verify and generate the ghost data. The logic for handling k-cluster violations, updating the blue and red candidates, and validating the mergeset blues is correctly implemented. The calculation of blue score and blue work is performed accurately.
309-357: LGTM!The new
check_ghostdata_blue_blockmethod is well-implemented and follows the necessary steps to verify the consistency of the provided ghost data. The logic for constructing a new ghost data instance, comparing its mergeset blues, and checking for length and content equality is correctly implemented. The calculation of blue score and blue work for the newly constructed ghost data is performed accurately, and the final comparison of the compact representations ensures overall consistency.
519-537: LGTM!The new
sort_blocks_for_work_typemethod is correctly implemented and follows the necessary steps to sort the blocks based on their blue work values. The retrieval of blue work values from theghostdag_storeis handled appropriately, with error handling in place. The use of theSortableBlockWithWorkTypestruct provides a clean way to sort the blocks based on their blue work values.
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Files selected for processing (15)
- chain/api/src/chain.rs (4 hunks)
- chain/src/chain.rs (7 hunks)
- chain/src/verifier/mod.rs (7 hunks)
- flexidag/src/blockdag.rs (4 hunks)
- flexidag/src/ghostdag/protocol.rs (3 hunks)
- flexidag/src/types/ordering.rs (1 hunks)
- flexidag/tests/tests.rs (3 hunks)
- sync/src/lib.rs (1 hunks)
- sync/src/parallel/executor.rs (1 hunks)
- sync/src/parallel/sender.rs (1 hunks)
- sync/src/store/sync_dag_store.rs (4 hunks)
- sync/src/store/tests.rs (1 hunks)
- sync/src/sync.rs (6 hunks)
- sync/src/tasks/block_sync_task.rs (8 hunks)
- sync/src/tasks/inner_sync_task.rs (3 hunks)
Files skipped from review due to trivial changes (2)
- sync/src/lib.rs
- sync/src/store/tests.rs
Files skipped from review as they are similar to previous changes (8)
- chain/api/src/chain.rs
- chain/src/chain.rs
- flexidag/src/blockdag.rs
- flexidag/src/types/ordering.rs
- sync/src/parallel/executor.rs
- sync/src/parallel/sender.rs
- sync/src/store/sync_dag_store.rs
- sync/src/sync.rs
Additional comments not posted (14)
sync/src/tasks/inner_sync_task.rs (2)
186-186: Review the necessity and impact ofdelete_all_dag_sync_blockcall.With the removal of the loop that processes absent blocks, the context of this call has changed. It's important to review whether this call is still necessary or if it could lead to unintended consequences in the new synchronization logic.
Please review the necessity and impact of this call in the new context to ensure it does not adversely affect the synchronization process.
160-184: Critical functionality change: Handling of absent blocks commented out.The removal of the loop handling absent blocks could significantly impact the synchronization process. It's crucial to ensure that the new method for handling these blocks is robust and well-integrated into the synchronization logic.
Please verify the new handling mechanism for absent blocks and ensure it maintains or improves the robustness of the synchronization process. If this change is intended to be temporary, consider adding a detailed comment explaining the context and future plans for this functionality.
chain/src/verifier/mod.rs (6)
80-89: Well-integrated ghost data handling in block verification.The changes to include ghost data in the verification process are well implemented. It would be beneficial to add documentation explaining how ghost data is used and its impact on the verification process.
Line range hint
108-170: Enhanced uncle verification with optional ghost data.The modifications to return optional ghost data from the
verify_unclesmethod are correctly implemented. Consider adding unit tests to cover the new behavior, especially to ensure that ghost data is correctly generated or omitted based on the conditions within the method.
325-328: Appropriate handling of ghost data inNoneVerifier.The explicit return of
Nonefor ghost data in theNoneVerifieris appropriate and aligns with its minimal verification strategy.
335-339: Consistent minimal verification inNoneVerifier.Returning
Nonefor ghost data in theverify_unclesmethod is consistent with the minimal verification approach of theNoneVerifier.
389-398: New method for blue block verification with ghost data.The introduction of the
verify_blue_blocksmethod in theBasicDagVerifieris well implemented. It would be beneficial to add documentation detailing how this method fits into the overall verification process and its specific role in handling ghost data.
431-443: Effective integration of ghost data inDagVerifierWithGhostData.The method effectively uses the
verify_blue_blocksto integrate ghost data into the uncle verification process. Monitor the performance impact of these changes to ensure they meet the efficiency goals stated in the PR.flexidag/src/ghostdag/protocol.rs (2)
174-266: Review ofverify_and_ghostdatamethodThis method has been added to enhance the verification of ghost data during the synchronization process. The method starts by ensuring that the header has parent hashes, which is crucial for the genesis block initialization. It then proceeds to select a parent, sort blocks, and classify them as blue or red based on the GHOSTDAG protocol rules.
Key Observations:
- The method uses assertions to ensure that the genesis block is initialized correctly, which is a robust way to handle potential errors early.
- The sorting and filtering of blocks are done efficiently, but the method could benefit from more detailed inline comments explaining each step, especially the complex logic involved in handling blue and red blocks.
Suggestions:
- Consider adding more detailed comments to improve readability and maintainability, especially for the complex logic sections.
- Ensure that all error handling paths are covered, particularly in the sorting and filtering operations where errors could lead to incorrect ghost data calculations.
Potential Issues:
- The method assumes that all necessary data (like blue work and difficulty) is always available and correctly calculated. It might be beneficial to add checks or fallbacks for these assumptions.
Performance Considerations:
- The method involves multiple iterations and filtering operations on potentially large sets of blocks. It might be beneficial to review these operations for efficiency, especially in a high-load environment.
Security Considerations:
- Proper error handling and data validation are crucial in blockchain protocols to prevent inconsistencies and potential security vulnerabilities. Ensure that all data inputs are validated before use.
Overall Assessment:
The method is well-structured and aligns with the PR's objectives to optimize synchronization by using validation methods instead of direct calculations. However, improvements in documentation and error handling could further enhance its robustness and clarity.
336-404: Review ofcheck_ghostdata_blue_blockmethodThis method checks the consistency of ghost data by comparing the mergeset blues of the provided ghost data against a newly constructed instance. It performs similar calculations for blue score and blue work, ensuring that the final ghost data matches the expected compact representation.
Key Observations:
- The method effectively uses the GHOSTDAG protocol rules to verify the consistency of ghost data, which is crucial for maintaining consensus in the blockchain.
- The use of detailed error messages and conditions helps in identifying and troubleshooting potential issues in the ghost data.
Suggestions:
- Similar to the previous method, consider adding more detailed comments to explain the logic behind each step, especially the conditions checked in the loops.
- Review the method for potential optimizations, particularly in how mergeset blues are handled and compared.
Potential Issues:
- The method relies heavily on the correctness of the
check_blue_candidatemethod. Any issues in that method could propagate errors here.- The method could potentially return incorrect results if the input ghost data or the newly constructed instance has inconsistencies that are not detected by the checks.
Performance Considerations:
- The method involves multiple iterations over the mergeset blues, which could be costly in terms of performance. Optimizing these operations could improve the overall efficiency of the method.
Security Considerations:
- Ensuring the accuracy and consistency of ghost data is paramount. Any errors in this process could lead to incorrect consensus, which might be exploited.
Overall Assessment:
The method is crucial for verifying the consistency of ghost data and aligns with the PR's objectives. Enhancements in documentation and potential optimizations could make it even more effective.sync/src/tasks/block_sync_task.rs (4)
35-38: Introduction ofParallelSignenum.The new
ParallelSignenum is well-defined and clearly represents the possible states of block processing. This addition should help in making the control flow more explicit and understandable.
Line range hint
437-478: Review ofensure_dag_parent_blocks_existmethod changes.This method has been significantly refactored to handle the synchronization of DAG blocks more efficiently. The method now returns a
Result<ParallelSign>which is a good use of Rust's type system to convey meaningful information about the operation's outcome. However, there are several points to consider:
- Error Handling: The method uses
anyhow::Result, which is suitable for applications where fine-grained error control is not required. Ensure that this aligns with the overall error handling strategy of the project.- Parallel Execution Logic: The logic to decide when to execute blocks in parallel (lines 457-471) is based on block numbers. This is a critical piece of logic and should be thoroughly tested to ensure it behaves as expected under all conditions.
- Data Consistency: The method modifies several stateful components. It's crucial to ensure that these modifications do not introduce data races, especially given the parallel nature of the operations.
Consider adding more detailed inline comments explaining the rationale behind key decisions, especially for the complex conditional logic used for parallel execution.
659-662: Handling of Optional Block Info.The logic to handle optional block info (lines 659-662) is crucial for the correct application of blocks. This part of the code should be robust against scenarios where block info might be unexpectedly absent, especially in error conditions or unusual network states.
Ensure that there are fallback mechanisms or clear error messages when expected block info is not available, to prevent silent failures or inconsistent state in the blockchain.
357-357: Potential Data Race Concerns in Parallel Execution.The changes introduce more parallel processing in the synchronization task, which can lead to data races if not handled correctly. Specifically, the use of shared resources like
self.chainandself.local_storein methods that could potentially be executed in parallel (e.g.,ensure_dag_parent_blocks_existandapply_block) needs careful synchronization.Recommend verifying that all shared resources are accessed in a thread-safe manner and consider using mutexes or other synchronization primitives if necessary.
Also applies to: 402-408, 457-478, 632-635
| fn add_and_print_with_ghostdata( | ||
| number: BlockNumber, | ||
| parent: Hash, | ||
| parents: Vec<Hash>, | ||
| origin: Hash, | ||
| dag: &mut BlockDAG, | ||
| ghostdata: GhostdagData, | ||
| ) -> anyhow::Result<BlockHeader> { | ||
| let header_builder = BlockHeaderBuilder::random(); | ||
| let header = header_builder | ||
| .with_parent_hash(parent) | ||
| .with_parents_hash(parents) | ||
| .with_number(number) | ||
| .build(); | ||
| let start = Instant::now(); | ||
| dag.commit_trusted_block(header.to_owned(), origin, Arc::new(ghostdata))?; | ||
| let duration = start.elapsed(); | ||
| println!( | ||
| "commit header: {:?}, number: {:?}, duration: {:?}", | ||
| header.id(), | ||
| header.number(), | ||
| duration | ||
| ); | ||
| let _ghostdata = dag.ghostdata(&[header.id()])?; | ||
| // println!( | ||
| // "add a header: {:?}, blue set: {:?}, red set: {:?}, blue anticone size: {:?}", | ||
| // header, ghostdata.mergeset_blues, ghostdata.mergeset_reds, ghostdata.blues_anticone_sizes | ||
| // ); | ||
| Ok(header) | ||
| } |
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Review of the new function add_and_print_with_ghostdata.
This function is a key addition as per the PR's objectives to optimize synchronization by incorporating validation methods instead of calculating ghost data directly. Here's a breakdown of the function:
- Function Signature and Parameters: The function accepts parameters like
number,parent,parents,origin,dag, andghostdata, which are typical for operations involving block headers in a DAG structure. - Function Operation: It builds a block header, commits it to the DAG using
commit_trusted_blockwhich is presumably a new or modified method that handles ghost data differently, and logs the operation's duration. - Error Handling: The function returns a
Result<BlockHeader>, which is appropriate for operations that might fail (e.g., committing a block). - Performance Considerations: The use of
Instant::now()andelapsed()for timing the commit operation is a good practice for performance monitoring.
Suggestions:
- Logging: The commented-out
println!statements could be useful for debugging. Consider enabling them conditionally based on a verbosity or debug flag. - Error Details: Enhance error handling by providing more context in case of failures, especially during the commit operation.
- Testing: Ensure that there are comprehensive tests for this function, particularly testing edge cases like handling invalid ghost data or commit failures.
Overall, the function aligns well with the PR's goals and appears to be implemented correctly. However, detailed testing and possibly more detailed logging would enhance its robustness and maintainability.
| "check error: {:?} after the blue block turns red and the red turns blue maliciously", | ||
| check_error | ||
| ); | ||
| assert!(check_error.is_err()); | ||
|
|
||
| let observer3 = dag.ghostdata(&[block_main_5.id()])?; | ||
| println!("observer 3 dag data: {:?}, ", observer3); | ||
|
|
||
| // assert!(observer1.blue_score < observer2.blue_score); | ||
| // assert!(observer1.selected_parent != observer2.selected_parent); | ||
|
|
||
| // assert_eq!(observer3.blue_score, observer2.blue_score); | ||
| // assert_eq!(observer3.selected_parent, observer2.selected_parent); | ||
|
|
||
| let normal_block = add_and_print( | ||
| 6, | ||
| block_main_5.id(), | ||
| vec![block_main_5.id(), block_red_3.id()], | ||
| genesis.parent_hash(), | ||
| &mut dag, | ||
| )?; | ||
| assert_eq!( | ||
| observer2, | ||
| dag.ghostdata_by_hash(normal_block.id())? | ||
| .expect("the data cannot be none") | ||
| .as_ref() | ||
| .clone() | ||
| ); | ||
|
|
||
| let makeup_ghostdata = GhostdagData::new( | ||
| observer2.blue_score, | ||
| observer2.blue_work, | ||
| observer2.selected_parent, | ||
| observer2.mergeset_blues.clone(), | ||
| Arc::new(vec![]), | ||
| HashKTypeMap::new(BlockHashMap::<KType>::new()), | ||
| ); | ||
| dag.ghost_dag_manager() | ||
| .check_ghostdata_blue_block(&makeup_ghostdata)?; | ||
| let makeup_block = add_and_print_with_ghostdata( | ||
| 6, | ||
| block_main_5.id(), | ||
| vec![block_main_5.id(), block_red_3.id()], | ||
| genesis.parent_hash(), | ||
| &mut dag, | ||
| makeup_ghostdata.clone(), | ||
| )?; | ||
|
|
||
| let block_from_normal = add_and_print( | ||
| 7, | ||
| normal_block.id(), | ||
| vec![normal_block.id()], | ||
| genesis.parent_hash(), | ||
| &mut dag, | ||
| )?; | ||
| let block_from_makeup = add_and_print( | ||
| 7, | ||
| makeup_block.id(), | ||
| vec![makeup_block.id()], | ||
| genesis.parent_hash(), | ||
| &mut dag, | ||
| )?; | ||
|
|
||
| let ghostdag_data_from_normal = dag | ||
| .ghostdata_by_hash(block_from_normal.id())? | ||
| .expect("the data cannot be none") | ||
| .as_ref() | ||
| .clone(); | ||
| let ghostdag_data_from_makeup = dag | ||
| .ghostdata_by_hash(block_from_makeup.id())? | ||
| .expect("the data cannot be none") | ||
| .as_ref() | ||
| .clone(); | ||
|
|
||
| println!("normal: {:?}", ghostdag_data_from_normal); | ||
| println!("makeup: {:?}", ghostdag_data_from_makeup); | ||
| assert_eq!( | ||
| ghostdag_data_from_makeup.blue_score, | ||
| ghostdag_data_from_normal.blue_score | ||
| ); | ||
|
|
||
| dag.ghost_dag_manager() | ||
| .check_ghostdata_blue_block(&ghostdag_data_from_normal)?; | ||
| dag.ghost_dag_manager() | ||
| .check_ghostdata_blue_block(&ghostdag_data_from_makeup)?; | ||
|
|
||
| let together_mine = dag.ghostdata(&[block_from_normal.id(), block_from_makeup.id()])?; | ||
| let mine_together = add_and_print( | ||
| 8, | ||
| together_mine.selected_parent, | ||
| vec![block_from_normal.id(), block_from_makeup.id()], | ||
| genesis.parent_hash(), | ||
| &mut dag, | ||
| )?; | ||
| let together_ghost_data = dag.storage.ghost_dag_store.get_data(mine_together.id())?; | ||
| dag.ghost_dag_manager() | ||
| .check_ghostdata_blue_block(&together_ghost_data)?; | ||
|
|
||
| anyhow::Result::Ok(()) | ||
| } |
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Expanded testing in test_verification_blue_block.
This test function has been significantly expanded to include multiple calls to add_and_print_with_ghostdata, enhancing the testing of ghost data management within the BlockDAG. Here are some observations and suggestions:
- Test Coverage: The expanded tests cover various scenarios, including the addition of blocks with different parent and ghost data configurations. This is crucial for ensuring the DAG handles ghost data correctly.
- Assertions: The test includes assertions to validate the behavior of the DAG, which is good practice. However, the complexity of the test could make it difficult to diagnose issues. Consider breaking it down into smaller, more focused tests.
- Error Handling: The test should handle potential errors more gracefully. For instance, adding error messages to assertions could provide clearer diagnostics when tests fail.
- Performance: Given the complexity and the number of operations, consider monitoring the performance of this test to ensure it runs efficiently, especially in a CI/CD environment.
Suggestions:
- Modularity: Break down the test into smaller units if possible to isolate specific functionalities and make debugging easier.
- Documentation: Add comments explaining the purpose of each block of assertions and operations to make the test easier to understand and maintain.
- Enhanced Assertions: Include more detailed error messages in assertions to aid in troubleshooting.
The enhancements to this test function are well-aligned with the PR's objectives to improve the handling of ghost data in synchronization processes. Ensuring robust testing around these changes is essential for the stability of the feature.
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Actionable comments posted: 2
Outside diff range, codebase verification and nitpick comments (3)
chain/src/verifier/mod.rs (2)
Line range hint
108-170: Issue: Inconsistent return values forverify_uncles.The method
verify_unclesalways returnsNone, even after processing the uncles. This does not align with the new method signature, which suggests thatOption<GhostdagData>could be returned. This might be an oversight or an incomplete implementation. Ensure that the method returns meaningfulGhostdagDatawhen applicable, or clarify the documentation ifNoneis the expected return under all circumstances.
431-443: Architecture Advice: Use ofBasicDagVerifierwithinDagVerifierWithGhostData.The
DagVerifierWithGhostDatautilizesBasicDagVerifierto implementverify_unclesand returnsSome(GhostdagData). This design effectively leverages existing functionality while adapting it for a specific use case. Consider documenting howBasicDagVerifier's methods are used to ensure clarity and maintainability.sync/src/tasks/block_sync_task.rs (1)
Line range hint
437-478: Refactor ofensure_dag_parent_blocks_existmethod.This method has been significantly refactored to handle more complex logic regarding DAG block processing. The method now accepts a
Blockinstead of aBlockHeader, which allows it to perform more comprehensive checks and operations on the block itself.
- Correctness: The method correctly checks if the DAG block exists and handles the logic based on the block's number and other properties.
- Performance: The use of asynchronous operations and conditional checks based on block properties (like block number) should help in optimizing the synchronization process.
- Maintainability: The method is well-structured and uses clear logging to aid in debugging and maintenance.
However, the method's complexity has increased, and it might benefit from further decomposition or refactoring to improve readability and maintainability.
Consider breaking down this method into smaller, more focused methods to handle specific parts of the logic, such as checking block existence, handling absent ancestor blocks, and deciding on parallel execution.
Review details
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Files selected for processing (22)
- chain/api/src/chain.rs (4 hunks)
- chain/src/chain.rs (7 hunks)
- chain/src/verifier/mod.rs (7 hunks)
- flexidag/src/blockdag.rs (4 hunks)
- flexidag/src/consensusdb/consensus_reachability.rs (1 hunks)
- flexidag/src/ghostdag/protocol.rs (3 hunks)
- flexidag/src/reachability/inquirer.rs (1 hunks)
- flexidag/src/types/ghostdata.rs (2 hunks)
- flexidag/src/types/ordering.rs (1 hunks)
- flexidag/tests/tests.rs (3 hunks)
- sync/Cargo.toml (1 hunks)
- sync/src/lib.rs (1 hunks)
- sync/src/parallel/executor.rs (1 hunks)
- sync/src/parallel/mod.rs (1 hunks)
- sync/src/parallel/sender.rs (1 hunks)
- sync/src/store/sync_dag_store.rs (4 hunks)
- sync/src/store/tests.rs (1 hunks)
- sync/src/sync.rs (6 hunks)
- sync/src/tasks/block_sync_task.rs (8 hunks)
- sync/src/tasks/inner_sync_task.rs (3 hunks)
- sync/src/tasks/mod.rs (1 hunks)
- types/src/block/mod.rs (1 hunks)
Files skipped from review due to trivial changes (3)
- sync/Cargo.toml
- sync/src/lib.rs
- sync/src/tasks/mod.rs
Files skipped from review as they are similar to previous changes (12)
- chain/api/src/chain.rs
- chain/src/chain.rs
- flexidag/src/blockdag.rs
- flexidag/src/reachability/inquirer.rs
- flexidag/src/types/ghostdata.rs
- flexidag/src/types/ordering.rs
- sync/src/parallel/executor.rs
- sync/src/parallel/mod.rs
- sync/src/parallel/sender.rs
- sync/src/store/sync_dag_store.rs
- sync/src/store/tests.rs
- sync/src/sync.rs
Additional comments not posted (14)
sync/src/tasks/inner_sync_task.rs (2)
Line range hint
148-186: Evaluate the synchronization logic and its alignment with PR objectives.The
do_syncfunction, particularly the sections around the commented-out loop, involves complex synchronization logic. Given the PR's focus on optimizing synchronization and handling ghost data, it's crucial to ensure that these changes:
- Optimize Performance: The changes should demonstrably improve performance or efficiency. This could be through reduced computational overhead, faster processing times, or more efficient error handling.
- Maintain or Improve Robustness: The synchronization process must remain robust, handling all edge cases and errors gracefully. The removal of the loop must not introduce new vulnerabilities or points of failure.
- Align with System Architecture: The changes should fit well within the existing system architecture, enhancing maintainability and scalability.
Please provide benchmarks, tests, or detailed explanations to support the changes made, ensuring they meet the stated objectives of the PR.
160-186: Critical: Review the removal of the absent block processing loop.The commented-out loop from lines 160 to 186 previously handled the processing of absent blocks, which is crucial for the synchronization process. The removal of this loop raises several concerns:
- Functionality Gap: It's unclear how absent blocks are now being handled. If this functionality is moved elsewhere or replaced by a different mechanism, it should be documented or commented clearly in the code.
- Error Handling: The original loop included error handling for failures in reading or executing absent blocks. Removing this without a replacement might lead to unhandled errors or silent failures during synchronization.
- Impact on Synchronization: Absent blocks play a significant role in ensuring data integrity and consistency during synchronization. Their proper handling is essential for the robustness of the sync process.
Please clarify or restore this functionality unless it has been adequately replaced or is no longer necessary due to changes elsewhere in the system.
chain/src/verifier/mod.rs (2)
325-339: Code Review: Consistency inNoneVerifier.The
NoneVerifierimplementation ofverify_unclesandverify_blockconsistently returnsNoneforghostdata, aligning with its purpose of minimal verification. This implementation is clear and maintains the expected behavior of a verifier that does not perform comprehensive checks.
389-398: Enhancement: Implementation ofverify_blue_blocks.The method
verify_blue_blocksinBasicDagVerifieris designed to verify blocks and returnGhostdagData. This is a new addition that enhances the modularity and clarity of the verification logic. Ensure that the methodverify_and_ghostdatacalled within this function is implemented and correctly handles the logic as intended.Verification successful
Verified: Implementation of
verify_blue_blocks.The
verify_blue_blocksfunction correctly delegates its functionality to theverify_and_ghostdatamethod of theBlockDAGobject. The implementation aligns with the expected behavior, enhancing the modularity and clarity of the verification logic as intended.Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the implementation of `verify_and_ghostdata` method. # Test: Search for the implementation of `verify_and_ghostdata`. Expect: Implementation details. rg --type rust -A 5 $'verify_and_ghostdata'Length of output: 2097
Script:
#!/bin/bash # Investigate the `dag()` method in `chain/src/chain.rs` to understand its role in the `verify_and_ghostdata` implementation. rg --type rust -A 5 $'fn dag(' # Examine the trait or interface definition in `chain/api/src/chain.rs` to understand the expected behavior of `verify_and_ghostdata`. rg --type rust -A 5 $'trait' chain/api/src/chain.rsLength of output: 760
Script:
#!/bin/bash # Correct the search for the `dag()` method in `chain/src/chain.rs` to understand its role in the `verify_and_ghostdata` implementation. rg --type rust -A 5 'fn dag\(' chain/src/chain.rsLength of output: 207
flexidag/src/consensusdb/consensus_reachability.rs (1)
53-53: Consider potential implications of changing visibility topub.Changing the visibility of
REACHABILITY_DATA_CFfrompub(crate)topubmakes it accessible outside of its defining module. This change can have implications on the encapsulation and security of the module's internal workings. It's crucial to ensure that this constant does not expose sensitive data or internal mechanisms that should not be publicly modifiable or accessible.Please verify that other modules or crates that will now have access to this constant are intended to interact with it directly and that this change aligns with overall architectural goals.
Verification successful
Visibility change to
pubforREACHABILITY_DATA_CFis appropriate.The change in visibility of
REACHABILITY_DATA_CFtopubis consistent with its role in database schema configuration. The usage insync/src/store/sync_dag_store.rsandflexidag/src/consensusdb/db.rsaligns with this purpose, and there are no indications of sensitive data exposure or security risks. This change supports broader access for database configuration across modules.Scripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Check for external usage of `REACHABILITY_DATA_CF` across the project. # Test: Search for the usage of `REACHABILITY_DATA_CF` in other modules or crates. Expect: No sensitive or unintended usages. rg --type rust --glob '!consensus_reachability.rs' 'REACHABILITY_DATA_CF'Length of output: 455
Script:
#!/bin/bash # Investigate the context of `REACHABILITY_DATA_CF` usage in `sync_dag_store.rs` and `db.rs`. # Extract surrounding lines for context in `sync_dag_store.rs`. rg --type rust --context 5 'REACHABILITY_DATA_CF' sync/src/store/sync_dag_store.rs # Extract surrounding lines for context in `db.rs`. rg --type rust --context 5 'REACHABILITY_DATA_CF' flexidag/src/consensusdb/db.rsLength of output: 1909
flexidag/src/ghostdag/protocol.rs (2)
174-266: Review ofverify_and_ghostdatamethodThis method is a significant addition to the
Ghostdagprotocol, aimed at verifying and calculating ghost data for blockchain synchronization. Here are some observations and suggestions:
Correctness and Logic:
- The method starts by asserting that the header has parent hashes, which is crucial for ensuring that the genesis block is initialized correctly. This is a good practice as it prevents the method from proceeding with an invalid state.
- The method uses a complex logic to sort and filter blocks, ensuring that the mergeset is correctly calculated. This is essential for the integrity of the blockchain.
Error Handling:
- The method uses
bailandwarnappropriately to handle errors and log warnings. This is crucial for debugging and maintaining the system. However, the use ofunwrap_or_elsein line 244 could be risky as it assumes the block difficulty will always be available. Consider handling this potential error more gracefully.Performance:
- The method involves multiple iterations and filtering over block headers, which could be optimized further. Consider caching results or parallelizing some of the operations to improve performance, especially since the PR aims to enhance efficiency through parallel processing.
Maintainability:
- The method is quite lengthy and handles multiple responsibilities. Consider breaking it down into smaller, more focused methods to improve readability and maintainability.
Security:
- Ensure that all external inputs are validated, especially since this method deals with critical blockchain data. Consider adding more checks if necessary to prevent potential security vulnerabilities.
Overall, the method is well-constructed but could benefit from optimizations and refactoring to align with the goals of the PR.
268-336: Review ofcheck_ghostdata_blue_blockmethodThis method checks the consistency of ghost data against a set of blue blocks. Here are some observations and suggestions:
Correctness and Logic:
- The method correctly re-constructs ghost data and compares it against the provided data. This is essential for ensuring the integrity of the ghost data.
- The use of
ensurein line 328 to compare compact representations is a good practice as it provides a clear and concise way to assert conditions.Error Handling:
- The method returns detailed error messages when the checks fail, which is helpful for debugging and maintaining the system. However, consider adding more context to the error messages to aid in troubleshooting.
Performance:
- Similar to the
verify_and_ghostdatamethod, this method could benefit from optimizations, especially in how it iterates and checks blocks. Consider ways to reduce the computational overhead.Maintainability:
- The method is relatively clear and well-organized. However, given its critical role in verifying ghost data, ensure that it is covered by comprehensive unit tests to prevent regressions.
Security:
- As this method deals with critical data verification, ensure all inputs are thoroughly validated and that the method is resistant to potential tampering or corruption of data.
Overall, the method performs its intended function effectively but could be optimized further to enhance performance.
sync/src/tasks/block_sync_task.rs (3)
35-38: Introduction ofParallelSignenum.The new enum
ParallelSignwith variantsNeedMoreBlocksandExecutedis a clear and concise way to represent the state of block processing. This change enhances the readability and maintainability of the code by providing explicit states rather than relying on less descriptive boolean or error values.
Line range hint
357-501: Error handling inapply_blockmethod.The method
apply_blockhas robust error handling that logs detailed error messages and handles specific types ofConnectBlockError. This is crucial for a blockchain synchronization task where error handling can significantly impact the robustness of the network.
- Correctness: The method correctly handles different types of errors and ensures that all possible error paths are accounted for.
- Security: Proper error handling also ensures that the system remains stable and can recover from unexpected states, which is critical in a blockchain context.
632-635: Handling ofParallelSignin synchronization logic.The handling of the
ParallelSignenum in the synchronization logic is a key part of the changes. This logic determines the next steps based on whether more blocks are needed or if the current block has been executed.
- Logic: The use of the enum makes the control flow clearer and more predictable.
- Correctness: The checks appear to be correctly implemented, ensuring that the synchronization process behaves as expected based on the state of block processing.
flexidag/tests/tests.rs (3)
11-22: Review of import statements and module structure.The import statements are well-organized, and the new types introduced (
BlockHashMap,HashKTypeMap,KType) are likely used in the new ghost data functionalities. This aligns with the PR's objectives to enhance ghost data handling.
708-737: Review of the new functionadd_and_print_with_ghostdata.This function is a key addition as per the PR's objectives to optimize synchronization by incorporating validation methods instead of calculating ghost data directly. Here's a breakdown of the function:
- Function Signature and Parameters: The function accepts parameters like
number,parent,parents,origin,dag, andghostdata, which are typical for operations involving block headers in a DAG structure.- Function Operation: It builds a block header, commits it to the DAG using
commit_trusted_blockwhich is presumably a new or modified method that handles ghost data differently, and logs the operation's duration.- Error Handling: The function returns a
Result<BlockHeader>, which is appropriate for operations that might fail (e.g., committing a block).- Performance Considerations: The use of
Instant::now()andelapsed()for timing the commit operation is a good practice for performance monitoring.Suggestions:
- Logging: The commented-out
println!statements could be useful for debugging. Consider enabling them conditionally based on a verbosity or debug flag.- Error Details: Enhance error handling by providing more context in case of failures, especially during the commit operation.
- Testing: Ensure that there are comprehensive tests for this function, particularly testing edge cases like handling invalid ghost data or commit failures.
Overall, the function aligns well with the PR's goals and appears to be implemented correctly. However, detailed testing and possibly more detailed logging would enhance its robustness and maintainability.
987-1214: Expanded testing intest_verification_blue_block.This test function has been significantly expanded to include multiple calls to
add_and_print_with_ghostdata, enhancing the testing of ghost data management within theBlockDAG. Here are some observations and suggestions:
- Test Coverage: The expanded tests cover various scenarios, including the addition of blocks with different parent and ghost data configurations. This is crucial for ensuring the DAG handles ghost data correctly.
- Assertions: The test includes assertions to validate the behavior of the DAG, which is good practice. However, the complexity of the test could make it difficult to diagnose issues. Consider breaking it down into smaller, more focused tests.
- Error Handling: The test should handle potential errors more gracefully. For instance, adding error messages to assertions could provide clearer diagnostics when tests fail.
- Performance: Given the complexity and the number of operations, consider monitoring the performance of this test to ensure it runs efficiently, especially in a CI/CD environment.
Suggestions:
- Modularity: Break down the test into smaller units if possible to isolate specific functionalities and make debugging easier.
- Documentation: Add comments explaining the purpose of each block of assertions and operations to make the test easier to understand and maintain.
- Enhanced Assertions: Include more detailed error messages in assertions to aid in troubleshooting.
The enhancements to this test function are well-aligned with the PR's objectives to improve the handling of ghost data in synchronization processes. Ensuring robust testing around these changes is essential for the stability of the feature.
types/src/block/mod.rs (1)
513-513: Adjustment of thevegachain threshold inBlockHeader.The change in the threshold for the
vegachain from3300000to4500000is significant and should be carefully validated to ensure it aligns with the intended blockchain behavior and does not introduce any side effects in block processing or validation logic.Run the following script to verify the impact of this change on the blockchain's behavior:
Verification successful
Threshold change for
vegachain verified.The new threshold value
4500000for thevegachain has been correctly implemented in the codebase. The conditional logic ensures that this threshold is applied appropriately based on the chain ID. No further occurrences of the old threshold value3300000were found, indicating a consistent update.
- Location:
types/src/block/mod.rsScripts executed
The following scripts were executed for the analysis:
Script:
#!/bin/bash # Description: Verify the impact of the threshold change on the blockchain's behavior. # Test: Search for any references to the old threshold value. Expect: No occurrences of the old value. rg --type rust -A 5 $'3300000'Length of output: 29
Script:
#!/bin/bash # Description: Verify the implementation and usage of the new threshold value. # Test: Search for occurrences of the new threshold value `4500000` in Rust files. rg --type rust -A 5 $'4500000'Length of output: 353
| let ghostdata = Self::verify_uncles( | ||
| current_chain, | ||
| new_block.uncles().unwrap_or_default(), | ||
| new_block_header, | ||
| )?; | ||
| watch(CHAIN_WATCH_NAME, "n14"); | ||
| Ok(VerifiedBlock(new_block)) | ||
| Ok(VerifiedBlock { | ||
| block: new_block, | ||
| ghostdata, | ||
| }) |
There was a problem hiding this comment.
Refactor suggestion: Consider handling the case where uncles is None.
The method verify_uncles is called with new_block.uncles().unwrap_or_default(), which will default to an empty slice if uncles is None. This could potentially mask issues where uncles data is expected but not present. Consider adding explicit handling or logging to indicate when uncles data is missing.
| let block_info = if self.chain.has_dag_block(block.header().id())? { | ||
| block_info | ||
| } else { | ||
| None |
There was a problem hiding this comment.
Conditional logic for block information handling.
The conditional logic here is used to determine the block information based on whether the block is a DAG block. This is a critical part of the synchronization process as it affects how blocks are connected and handled within the system.
- Correctness: The logic correctly checks the block's DAG status and handles the information accordingly.
- Maintainability: While the logic is correct, it could be made more readable by encapsulating some of the conditions into well-named helper functions or methods.
Refactor this block of code to use helper functions that clearly describe what each condition is checking. This will improve readability and maintainability.
There was a problem hiding this comment.
Actionable comments posted: 1
Outside diff range, codebase verification and nitpick comments (2)
sync/src/tasks/inner_sync_task.rs (1)
Line range hint
85-148: Complex Synchronization Logic indo_syncMethodThe
do_syncmethod contains complex logic that orchestrates multiple synchronization tasks. The method handles errors appropriately and uses Rust's error handling idioms effectively. The use ofmap_errto convert errors intoTaskErroris appropriate and maintains the error context.However, the method's complexity could be reduced by breaking down some of its parts into smaller, more manageable functions. This would improve readability and maintainability, especially for future modifications.
Additionally, the method could benefit from more inline comments explaining the purpose of each major step, especially where parallel processing and synchronization logic are involved. This would make the code more accessible to new developers or external contributors.
sync/src/tasks/block_sync_task.rs (1)
Line range hint
437-478: Review ofensure_dag_parent_blocks_existmethod changes.This method has undergone significant changes:
- The method signature has been updated to accept a
Blockinstead of aBlockHeader, which allows for more comprehensive processing within the method.- The method now returns a
Result<ParallelSign>, providing a clearer indication of the processing state of the block.The logic within the method has been refactored to include checks for the existence of DAG blocks and to handle parallel execution conditions more effectively. The use of
DagBlockSenderfor parallel execution of absent blocks is a notable improvement, potentially enhancing the efficiency of the synchronization process.However, the method contains complex logic that could benefit from further decomposition or the use of helper functions to improve readability and maintainability.
Consider breaking down the method into smaller, more focused functions or adding more detailed comments to clarify the steps involved in the process.
Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (3)
- sync/src/sync.rs (6 hunks)
- sync/src/tasks/block_sync_task.rs (8 hunks)
- sync/src/tasks/inner_sync_task.rs (3 hunks)
Files skipped from review as they are similar to previous changes (1)
- sync/src/sync.rs
Additional comments not posted (5)
sync/src/tasks/inner_sync_task.rs (1)
Line range hint
28-43: Constructor Method Review:newThe constructor method
newis well-structured and follows Rust's idiomatic practices for initializing a struct. It takes multiple parameters, all of which are stored directly into the struct without any additional processing. This is straightforward and does not introduce any immediate issues.sync/src/tasks/block_sync_task.rs (4)
35-38: Introduction ofParallelSignenum.The new
ParallelSignenum is well-defined and clearly represents the possible states of block processing. This addition should enhance the clarity of the control flow in the synchronization process.
357-357: Review of block application and DAG block handling logic.The changes in the block application logic and the handling of absent parent DAG blocks introduce more robust error handling and optimization:
- The
apply_for_syncmethod is used for applying blocks, which is appropriate for the synchronization context.- The handling of absent parent DAG blocks now includes checks to avoid redundant operations, which should improve performance.
These changes are aligned with the objectives of the PR to enhance efficiency and maintainability.
Also applies to: 402-408
608-611: Handling ofParallelSignin block synchronization.The handling of the
ParallelSignenum in the synchronization logic is correctly implemented. The code checks the returnedParallelSignto determine the necessary actions, which is a good practice for managing complex control flows in asynchronous operations.
635-638: Conditional logic for block information handling.The conditional logic here is used to determine the block information based on whether the block is a DAG block. This is a critical part of the synchronization process as it affects how blocks are connected and handled within the system.
- Correctness: The logic correctly checks the block's DAG status and handles the information accordingly.
- Maintainability: While the logic is correct, it could be made more readable by encapsulating some of the conditions into well-named helper functions or methods.
This comment is a duplicate of a previous review comment and remains valid.
| @@ -146,7 +145,7 @@ where | |||
| vm_metrics, | |||
| self.dag.clone(), | |||
| )?; | |||
| let mut block_collector = BlockCollector::new_with_handle( | |||
| let block_collector = BlockCollector::new_with_handle( | |||
There was a problem hiding this comment.
Commented-Out Loop Handling Absent Blocks
The loop that previously handled absent blocks has been commented out. This is a significant change that could potentially disrupt the synchronization process if absent blocks are not processed elsewhere.
It is crucial to document the reasons for this change and to describe how absent blocks are intended to be handled moving forward. If this is a temporary change, consider adding a TODO or FIXME comment to indicate that the functionality needs to be revisited.
Additionally, ensure that there are tests or monitoring in place to catch any issues that may arise from not processing these blocks.
Would you like me to help document this change or review alternative implementations for handling absent blocks?
There was a problem hiding this comment.
Actionable comments posted: 6
Outside diff range, codebase verification and nitpick comments (1)
sync/src/tasks/block_sync_task.rs (1)
Line range hint
437-478: Refactoredensure_dag_parent_blocks_existmethod.The method has been significantly refactored to enhance its functionality:
- It now accepts a
Blockinstead of aBlockHeader, allowing it to perform more comprehensive checks.- It returns a
Result<ParallelSign>, providing clearer feedback on the synchronization process.Consider adding more detailed logging at key decision points within the method to aid in debugging and monitoring the synchronization process.
Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (3)
- sync/src/parallel/executor.rs (1 hunks)
- sync/src/parallel/sender.rs (1 hunks)
- sync/src/tasks/block_sync_task.rs (8 hunks)
Files skipped from review as they are similar to previous changes (1)
- sync/src/parallel/executor.rs
Additional comments not posted (2)
sync/src/tasks/block_sync_task.rs (2)
35-38: Introduction ofParallelSignenum.The new
ParallelSignenum is well-defined and clearly represents the possible states of block processing. This addition should help in making the control flow more explicit and understandable.
608-611: Handling ofParallelSignin synchronization logic.The handling of the
ParallelSignenum in the synchronization logic is correctly implemented. The code effectively uses the enum to determine the next steps in the synchronization process, enhancing the robustness of the block handling logic.
| struct DagBlockWorker { | ||
| pub sender_to_executor: Sender<Option<Block>>, | ||
| pub receiver_from_executor: Receiver<ExecuteState>, | ||
| pub state: ExecuteState, | ||
| pub handle: JoinHandle<()>, | ||
| } |
There was a problem hiding this comment.
Review: DagBlockWorker struct definition.
The DagBlockWorker struct is well-defined with clear member variables related to executor communication and state management. However, consider adding documentation comments to each member to enhance code readability and maintainability, especially in a complex domain like blockchain synchronization.
| pub struct DagBlockSender<'a> { | ||
| sync_dag_store: SyncDagStore, | ||
| executors: Vec<DagBlockWorker>, | ||
| queue_size: usize, | ||
| time_service: Arc<dyn TimeService>, | ||
| storage: Arc<dyn Store>, | ||
| vm_metrics: Option<VMMetrics>, | ||
| dag: BlockDAG, | ||
| notifier: &'a mut dyn ContinueChainOperator, | ||
| } |
There was a problem hiding this comment.
Review: DagBlockSender struct definition.
The DagBlockSender struct is crucial for managing the synchronization process. It is well-structured but lacks documentation. Adding detailed comments explaining the purpose of each field, especially complex ones like sync_dag_store and notifier, would greatly benefit future maintainability.
| async fn dispatch_to_worker(&mut self, block: &Block) -> anyhow::Result<bool> { | ||
| for executor in &mut self.executors { | ||
| match &executor.state { | ||
| ExecuteState::Executing(header_id) => { | ||
| if *header_id == block.header().parent_hash() | ||
| || block.header.parents_hash().contains(header_id) | ||
| { | ||
| executor.state = ExecuteState::Executing(block.id()); | ||
| executor | ||
| .sender_to_executor | ||
| .send(Some(block.clone())) | ||
| .await?; | ||
| return anyhow::Ok(true); | ||
| } | ||
| } | ||
| ExecuteState::Executed(_) | ExecuteState::Error(_) | ExecuteState::Closed => { | ||
| continue; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| for executor in &mut self.executors { | ||
| match &executor.state { | ||
| ExecuteState::Executed(_) => { | ||
| executor.state = ExecuteState::Executing(block.id()); | ||
| executor | ||
| .sender_to_executor | ||
| .send(Some(block.clone())) | ||
| .await?; | ||
| return anyhow::Ok(true); | ||
| } | ||
|
|
||
| ExecuteState::Executing(_) | ExecuteState::Error(_) | ExecuteState::Closed => { | ||
| continue; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| anyhow::Ok(false) |
There was a problem hiding this comment.
Review: dispatch_to_worker method.
This method efficiently dispatches blocks to appropriate workers based on their state. The use of pattern matching on executor.state is a good Rust practice. However, consider handling potential errors more robustly when sending blocks to executors (lines 71 and 88). Currently, the method returns a generic anyhow::Result, but more specific error handling could improve debugging and fault tolerance.
| pub async fn process_absent_blocks(mut self) -> anyhow::Result<()> { | ||
| let sync_dag_store = self.sync_dag_store.clone(); | ||
| let iter = sync_dag_store.iter_at_first()?; | ||
| for result_value in iter { | ||
| let (_, value) = result_value?; | ||
| let block = DagSyncBlock::decode_value(&value)?.block.ok_or_else(|| { | ||
| anyhow::format_err!("failed to decode for the block in parallel!") | ||
| })?; | ||
|
|
||
| // Finding the executing state is the priority | ||
| if self.dispatch_to_worker(&block).await? { | ||
| self.flush_executor_state().await?; | ||
| continue; | ||
| } | ||
|
|
||
| // no suitable worker found, create a new worker | ||
| let (sender_to_main, receiver_from_executor) = | ||
| mpsc::channel::<ExecuteState>(self.queue_size); | ||
| let (sender_to_worker, executor) = DagBlockExecutor::new( | ||
| sender_to_main, | ||
| self.queue_size, | ||
| self.time_service.clone(), | ||
| self.storage.clone(), | ||
| self.vm_metrics.clone(), | ||
| self.dag.clone(), | ||
| )?; | ||
|
|
||
| self.executors.push(DagBlockWorker { | ||
| sender_to_executor: sender_to_worker.clone(), | ||
| receiver_from_executor, | ||
| state: ExecuteState::Executing(block.id()), | ||
| handle: executor.start_to_execute()?, | ||
| }); | ||
|
|
||
| sender_to_worker.send(Some(block)).await?; | ||
|
|
||
| self.flush_executor_state().await?; | ||
| } | ||
|
|
||
| self.wait_for_finish().await?; | ||
| sync_dag_store.delete_all_dag_sync_block()?; | ||
|
|
||
| Ok(()) | ||
| } |
There was a problem hiding this comment.
Review: process_absent_blocks method.
This method processes blocks that were previously absent, attempting to dispatch them to workers or create new workers if necessary. The logic is sound, but the method is quite long and does several things. Consider refactoring it into smaller, more focused methods to improve readability and testability. For instance, the block dispatching and new worker creation logic could be separated into their own methods.
| async fn flush_executor_state(&mut self) -> anyhow::Result<()> { | ||
| for worker in &mut self.executors { | ||
| match worker.receiver_from_executor.try_recv() { | ||
| Ok(state) => { | ||
| if let ExecuteState::Executed(executed_block) = state { | ||
| info!("finish to execute block {:?}", executed_block.header()); | ||
| self.notifier.notify((*executed_block).clone())?; | ||
| worker.state = ExecuteState::Executed(executed_block); | ||
| } | ||
| } | ||
| Err(e) => match e { | ||
| mpsc::error::TryRecvError::Empty => (), | ||
| mpsc::error::TryRecvError::Disconnected => worker.state = ExecuteState::Closed, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| let len = self.executors.len(); | ||
| self.executors | ||
| .retain(|worker| !matches!(worker.state, ExecuteState::Closed)); | ||
|
|
||
| if len != self.executors.len() { | ||
| info!("sync workers count: {:?}", self.executors.len()); | ||
| } | ||
|
|
||
| anyhow::Ok(()) | ||
| } |
There was a problem hiding this comment.
Review: flush_executor_state method.
This method checks the state of each executor and updates it accordingly. The use of try_recv to non-blockingly receive executor states is appropriate here. However, the method could benefit from more detailed logging, especially in error scenarios (line 159), to aid in monitoring and troubleshooting.
sync/src/parallel/sender.rs
Outdated
| async fn wait_for_finish(mut self) -> anyhow::Result<()> { | ||
| // tell the workers to exit | ||
| for worker in &self.executors { | ||
| worker.sender_to_executor.send(None).await?; | ||
| } | ||
|
|
||
| for worker in &mut self.executors { | ||
| if let ExecuteState::Closed = worker.state { | ||
| continue; | ||
| } | ||
|
|
||
| match worker.receiver_from_executor.try_recv() { | ||
| Ok(state) => { | ||
| if let ExecuteState::Executed(executed_block) = state { | ||
| info!("finish to execute block {:?}", executed_block.header()); | ||
| self.notifier.notify(*executed_block)?; | ||
| } | ||
| } | ||
| Err(e) => match e { | ||
| mpsc::error::TryRecvError::Empty => (), | ||
| mpsc::error::TryRecvError::Disconnected => worker.state = ExecuteState::Closed, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| for worker in self.executors { | ||
| worker.handle.await?; | ||
| } | ||
|
|
||
| anyhow::Ok(()) |
There was a problem hiding this comment.
Review: wait_for_finish method.
The method ensures all workers have finished processing before the sender itself finishes. The approach of sending None to signal workers to exit (line 178) is a standard pattern in Rust async programming. However, consider adding more comprehensive error handling and logging during the worker shutdown process to ensure smooth termination and easier debugging.
Benchmark for 04a586bClick to view benchmark
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Benchmark for bcd884eClick to view benchmark
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Benchmark for ca45a20Click to view benchmark
|
flexidag/src/blockdag.rs
Outdated
| .cloned() | ||
| .collect::<HashSet<_>>() | ||
| == trusted_ghostdata | ||
| .mergeset_blues | ||
| .iter() | ||
| .cloned() | ||
| .collect::<HashSet<_>>(), | ||
| "blue values are not same" | ||
| ); | ||
| trusted_ghostdata | ||
| } | ||
| }; | ||
| // Store ghostdata | ||
| process_key_already_error( | ||
| self.storage | ||
| .ghost_dag_store | ||
| .insert(header.id(), ghostdata.clone()), | ||
| )?; | ||
|
|
||
| // Update reachability store | ||
| debug!( | ||
| "start to update reachability data for block: {:?}, number: {:?}", | ||
| header.id(), | ||
| header.number() | ||
| ); | ||
| let reachability_store = self.storage.reachability_store.clone(); | ||
|
|
||
| // let mut merge_set = ghostdata | ||
| // .unordered_mergeset_without_selected_parent() | ||
| // .filter(|hash| self.storage.reachability_store.read().has(*hash).unwrap()) | ||
| // .collect::<Vec<_>>() | ||
| // .into_iter(); | ||
| let merge_set = header.parents(); | ||
| let add_block_result = { | ||
| let mut reachability_writer = reachability_store.write(); | ||
| inquirer::add_block( | ||
| reachability_writer.deref_mut(), | ||
| header.id(), | ||
| ghostdata.selected_parent, | ||
| &mut merge_set.into_iter(), | ||
| ) | ||
| }; | ||
| match add_block_result { | ||
| Result::Ok(_) => (), | ||
| Err(reachability::ReachabilityError::DataInconsistency) => { | ||
| let _future_covering_set = reachability_store | ||
| .read() | ||
| .get_future_covering_set(header.id())?; | ||
| info!( | ||
| "the key {:?} was already processed, original error message: {:?}", | ||
| header.id(), | ||
| reachability::ReachabilityError::DataInconsistency | ||
| ); | ||
| } | ||
| Err(reachability::ReachabilityError::StoreError(StoreError::KeyNotFound(msg))) => { | ||
| if msg == *REINDEX_ROOT_KEY.to_string() { | ||
| info!( | ||
| "the key {:?} was already processed, original error message: {:?}", | ||
| header.id(), | ||
| reachability::ReachabilityError::StoreError(StoreError::KeyNotFound( | ||
| REINDEX_ROOT_KEY.to_string() | ||
| )) | ||
| ); | ||
| info!("now set the reindex key to origin: {:?}", origin); | ||
| // self.storage.reachability_store.set_reindex_root(origin)?; | ||
| self.set_reindex_root(origin)?; | ||
| bail!( | ||
| "failed to add a block when committing, e: {:?}", | ||
| reachability::ReachabilityError::StoreError(StoreError::KeyNotFound(msg)) | ||
| ); | ||
| } else { | ||
| bail!( | ||
| "failed to add a block when committing, e: {:?}", | ||
| reachability::ReachabilityError::StoreError(StoreError::KeyNotFound(msg)) | ||
| ); | ||
| } | ||
| } | ||
| Err(reachability::ReachabilityError::StoreError(StoreError::InvalidInterval(_, _))) => { | ||
| self.set_reindex_root(origin)?; | ||
| bail!("failed to add a block when committing for invalid interval",); | ||
| } | ||
| Err(e) => { | ||
| bail!("failed to add a block when committing, e: {:?}", e); | ||
| } | ||
| } | ||
|
|
||
| process_key_already_error( | ||
| self.storage | ||
| .relations_store | ||
| .write() | ||
| .insert(header.id(), BlockHashes::new(parents)), | ||
| )?; | ||
| // Store header store | ||
| process_key_already_error(self.storage.header_store.insert( | ||
| header.id(), | ||
| Arc::new(header), | ||
| 1, | ||
| ))?; | ||
| Ok(()) | ||
| } |
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Review of commit_trusted_block Method
This method is a key addition to the BlockDAG class, facilitating the commitment of blocks with trusted ghost data. The method is well-structured with clear logging and error handling. Here are some observations and suggestions:
-
Logging and Error Handling:
- The method includes detailed logging at various stages of the block commitment process, which is good for traceability and debugging.
- The use of
ensurefor integrity checks (lines 178-202) is appropriate, ensuring that the ghost data matches the trusted data before proceeding.
-
Complexity and Maintainability:
- The method is quite long and handles multiple aspects of block commitment, including ghost data verification, reachability store updates, and error handling. Consider breaking down this method into smaller, more focused methods to improve maintainability and readability.
-
Error Messages:
- The error messages are descriptive, which helps in understanding the issues during failure scenarios. However, ensure that these messages are consistent and provide enough context to be useful in production environments.
-
Potential Refactoring:
- The block of code handling the reachability store updates (lines 213-278) could be extracted into a separate method to reduce the complexity of
commit_trusted_block.
- The block of code handling the reachability store updates (lines 213-278) could be extracted into a separate method to reduce the complexity of
-
Performance Considerations:
- Given the method's complexity and the operations performed, it's important to ensure that it does not become a bottleneck, especially in high-load scenarios. Consider profiling the method under load to identify any potential performance issues.
Overall, the method is a solid addition to the BlockDAG class, enhancing its functionality significantly. However, refactoring for better modularity and maintainability would be beneficial.
| pub fn reachability_store( | ||
| &self, | ||
| ) -> Arc<parking_lot::lock_api::RwLock<parking_lot::RawRwLock, DbReachabilityStore>> { | ||
| self.storage.reachability_store.clone() | ||
| } | ||
|
|
||
| pub fn verify_and_ghostdata( | ||
| &self, | ||
| blue_blocks: &[BlockHeader], | ||
| header: &BlockHeader, | ||
| ) -> Result<GhostdagData, anyhow::Error> { | ||
| self.ghost_dag_manager() | ||
| .verify_and_ghostdata(blue_blocks, header) | ||
| } |
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Review of reachability_store and verify_and_ghostdata Methods
These methods provide essential functionalities related to reachability data access and ghost data verification:
-
reachability_storeMethod (lines 570-574):- This method provides a straightforward way to access the reachability store. It is simple and does not involve complex logic, which is good for maintainability.
- Ensure that the use of
ArcandRwLockis consistent with the rest of the system's concurrency model to avoid potential deadlocks or performance issues.
-
verify_and_ghostdataMethod (lines 576-583):- This method handles the verification of blue blocks against a given header and retrieves ghost data, which is crucial for the integrity of the block processing.
- The delegation of functionality to
ghost_dag_manageris a good practice, keeping theBlockDAGclass cleaner and more focused. - Consider adding more detailed logging within this method to aid in debugging and operational monitoring.
Both methods are well-implemented and serve their intended purposes effectively. Minor enhancements in logging and concurrency handling could further improve their robustness and usability.
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Actionable comments posted: 1
Outside diff range, codebase verification and nitpick comments (1)
chain/src/chain.rs (1)
Line range hint
461-657: Refactor and enhance error handling inexecute_dag_block.This method has been significantly refactored to handle ghost data during the execution of DAG blocks. The changes include:
- Improved logging with detailed block information.
- Enhanced error handling with specific checks for the existence of the parent block.
- Introduction of conditional logic to handle ghost data if present, which aligns with the PR's objectives to optimize synchronization.
However, there are several areas that could be improved:
- The use of
unwrap_or_elsewithpanicinside the loop calculatingtotal_difficultycould be replaced with proper error handling to prevent potential runtime panics.- The method could benefit from splitting into smaller, more manageable functions, especially the parts handling transaction execution and state updates, to improve readability and maintainability.
Consider the following refactor suggestions:
- Replace
paniccalls with error returns that can be handled gracefully.- Break down the function into smaller sub-functions to isolate functionality and simplify testing.
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- chain/src/chain.rs (8 hunks)
Additional comments not posted (3)
chain/src/chain.rs (3)
4-4: Updated imports to include new verifier classes.The addition of
DagVerifierWithGhostDatato the imports aligns with the PR's objective to enhance block verification processes by incorporating ghost data handling directly within the DAG verification logic.
1220-1220: Enhanced block verification logic inverify.The change to use
DagVerifierfor block verification instead of the previous method enhances the thoroughness of the verification process by incorporating DAG-specific checks. This is a crucial update that supports the PR's goal of improving block verification mechanisms.
1549-1551: Implementation ofapply_for_syncusingDagVerifierWithGhostData.This new method integrates the ghost data verifier into the block application process, which is a key part of the PR's enhancements. By using
DagVerifierWithGhostData, the method ensures that blocks are applied with a comprehensive verification that includes ghost data, aligning with the objectives to enhance synchronization and verification processes.
| fn verify_and_ghostdata( | ||
| &self, | ||
| uncles: &[BlockHeader], | ||
| header: &BlockHeader, | ||
| ) -> Result<starcoin_dag::types::ghostdata::GhostdagData> { | ||
| self.dag().verify_and_ghostdata(uncles, header) | ||
| } |
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New method for verifying blocks with ghost data.
The addition of verify_and_ghostdata method is a significant enhancement that allows for the verification of blocks along with their ghost data. This method directly supports the PR's objectives by integrating ghost data handling into the block verification process, which is expected to improve the integrity and efficiency of block synchronization.
Consider adding detailed documentation for this method to explain its parameters, expected behavior, and any potential side effects or exceptions it might handle.
Would you like me to help draft the documentation for this new method?
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What is the current behavior?
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Summary by CodeRabbit
New Features
SortableBlockWithWorkTypestruct for improved sorting and comparison of blocks.Bug Fixes
Documentation
Tests
BlockDAGto include ghost data management scenarios.Chores
tokiocrate.