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Pull Request Overview
This PR moves work-in-progress (WIP) features from a broken Copilot branch into the main codebase, significantly expanding EpilogLite's capabilities with new asynchronous I/O support, graph database features, stored procedures framework, and Write-Ahead Logging (WAL) implementation.
Key changes include:
- Addition of comprehensive async I/O support with backpressure control and performance benchmarking
- Implementation of native graph data structures with traversal algorithms and SQL-like query syntax
- Foundation for stored procedures with complete parsing and storage framework
- Write-Ahead Logging (WAL) implementation for improved concurrency and crash recovery
Reviewed Changes
Copilot reviewed 65 out of 65 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| src/lib.rs | Added graph module exports to public API |
| src/eplite.rs | Added graph and procedures module declarations |
| src/eplite/procedures.rs | Complete stored procedures registry and context implementation |
| src/eplite/persistence/wal.rs | Full WAL implementation with reader, writer, checksum, and recovery |
| src/eplite/graph.rs | Comprehensive graph data structures with algorithms and manager |
| src/eplite/os/async_file.rs | Async file implementation using tokio |
| src/eplite/os/async_vfs.rs | Async Virtual File System implementation |
| src/eplite/os/backpressure.rs | Backpressure control utilities for async operations |
| src/eplite/os/performance.rs | Performance comparison utilities for sync vs async I/O |
| src/eplite/traits/async_file.rs | Async file trait definitions |
| src/eplite/traits.rs | Added async_file module conditionally |
| src/capi.rs | Relaxed unsafe code restrictions and added naming convention allowance |
| tests/ | Extensive test suites for WAL integration and stored procedures |
| examples/ | New examples demonstrating async I/O, graph usage, and stored procedures |
| docs/ | Comprehensive documentation for new features |
| Cargo.toml | Changed unsafe_code lint from "forbid" to "deny" |
Comment on lines
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| let sync_path = "/tmp/epiloglite_perf_sync.db"; | ||
| let async_path = "/tmp/epiloglite_perf_async.db"; |
There was a problem hiding this comment.
Hard-coded /tmp/ paths may cause issues on Windows systems where this directory may not exist. Consider using std::env::temp_dir() for cross-platform compatibility, or make the paths configurable.
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| /// Get a human-readable summary | ||
| pub fn summary(&self) -> String { | ||
| format!( | ||
| "Sync: {:?}, Async: {:?}, Speedup: {:.2}x", | ||
| self.sync_duration, self.async_duration, self.async_speedup |
There was a problem hiding this comment.
The async_speedup calculation could result in division by zero if async_duration is zero, or produce misleading results if async is slower than sync (negative speedup). Consider adding validation and handling edge cases like when async is slower.
Suggested change
| /// Get a human-readable summary | |
| pub fn summary(&self) -> String { | |
| format!( | |
| "Sync: {:?}, Async: {:?}, Speedup: {:.2}x", | |
| self.sync_duration, self.async_duration, self.async_speedup | |
| /// Safely create a new PerformanceComparison, handling division by zero and negative speedup. | |
| pub fn new(sync_duration: Duration, async_duration: Duration) -> Self { | |
| let sync_secs = sync_duration.as_secs_f64(); | |
| let async_secs = async_duration.as_secs_f64(); | |
| let async_speedup = if async_secs == 0.0 { | |
| f64::INFINITY | |
| } else if sync_secs == 0.0 { | |
| 0.0 | |
| } else { | |
| sync_secs / async_secs | |
| }; | |
| Self { | |
| sync_duration, | |
| async_duration, | |
| async_speedup, | |
| } | |
| } | |
| /// Get a human-readable summary | |
| pub fn summary(&self) -> String { | |
| let speedup_str = if self.async_speedup.is_infinite() { | |
| "infinite".to_string() | |
| } else if self.async_speedup.is_nan() { | |
| "undefined".to_string() | |
| } else if self.async_speedup < 1.0 { | |
| format!("{:.2}x (async slower)", self.async_speedup) | |
| } else { | |
| format!("{:.2}x", self.async_speedup) | |
| }; | |
| format!( | |
| "Sync: {:?}, Async: {:?}, Speedup: {}", | |
| self.sync_duration, self.async_duration, speedup_str |
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Moving WIP from broken Copilot branch