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4193

What's changed and what's your intention?

Cooperate with CacheManager to implement CachedPuffinWriter

Checklist

[x] I have written the necessary rustdoc comments.
[x] I have added the necessary unit tests and integration tests.
[ ] This PR requires documentation updates.

Summary by CodeRabbit

New Features
- Introduced a new module to manage file access and metadata within the Puffin system.
- Added support for handling errors with detailed messages and specific variants.
Enhancements
- Improved the file reading and writing functionality with a new CachedPuffinReader.
- Enhanced metadata management for directories and files, improving data organization and retrieval.
Bug Fixes
- Fixed issues related to file key mismatches and index out-of-bounds errors.
- Restructured module imports for better maintainability and clarity.

coderabbitai[bot] commented 1 week ago

Walkthrough

The recent updates to the puffin codebase introduce new error variants for more granular error handling, add a new module for file access, restructure the cached puffin manager, and implement new functionalities for directory and file metadata management. These enhancements aim to improve error management, streamline code structure, and enhance file handling capabilities within the puffin system.

Changes

Files	Summary
`src/puffin/src/error.rs`	Added new error variants `BlobNotFound`, `BlobIndexOutOfBound`, and `FileKeyNotMatch`.
`src/puffin/src/puffin_manager.rs`	Added the new `file_accessor` module.
`cached_puffin_manager.rs`	Restructured module imports; removed directory and file metadata declarations.
`dir_meta.rs`	Defined `DirMetadata` and `DirFileMetadata` structs.
`reader.rs`	Introduced `CachedPuffinReader` struct implementing the `PuffinReader` trait.
`writer.rs`	Restructured import statements; added `new` method to `CachedPuffinWriter`.
`file_accessor.rs`	Added `PuffinFileAccessor` trait for opening readers and writers for puffin files.

Sequence Diagram(s)

sequenceDiagram
    participant Client
    participant CachedPuffinReader
    participant CacheManager
    participant FileAccessor

    Client->>+CachedPuffinReader: Request Blob
    CachedPuffinReader->>+CacheManager: Retrieve Blob from Cache
    CacheManager-->>-CachedPuffinReader: Blob
    CachedPuffinReader->>+FileAccessor: Decompress Blob
    FileAccessor-->>-CachedPuffinReader: Decompressed Blob
    CachedPuffinReader-->>-Client: Blob Data

Poem

In the world of puffin's code, so bright and vast, New errors catch issues, clever and fast. Modules reshuffled, metadata in place, Readers and writers dancing in grace. With every bit, the system grows, A journey of code, see how it flows. 🐇✨

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codecov[bot] commented 1 week ago

Codecov Report

Attention: Patch coverage is 0% with 133 lines in your changes missing coverage. Please review.

Project coverage is 84.64%. Comparing base (1e815dd) to head (0f70f9b). Report is 4 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #4209 +/- ## ========================================== - Coverage 85.02% 84.64% -0.39% ========================================== Files 1033 1038 +5 Lines 181960 182769 +809 ========================================== - Hits 154707 154697 -10 - Misses 27253 28072 +819 ```

GreptimeTeam / greptimedb

feat(puffin): implement CachedPuffinReader #4209