Refer to a related PR or issue link (optional)

4193

What's changed and what's your intention?

Add PuffinManager to unify puffin file reading and writing blob and directory

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.

coderabbitai[bot] commented 3 months ago

Walkthrough

This update introduces a new module puffin_manager to the Puffin library, which provides enhanced capabilities for managing, reading, and writing Puffin files. It defines traits for creating readers and writers, handling data compression, and organizing file structures efficiently.

Changes

Files	Change Summary
`src/puffin/src/lib.rs`	Introduced `puffin_manager` module to the library.
`src/puffin/src/puffin_manager.rs`	Added traits `PuffinManager`, `PuffinWriter`, and `PuffinReader`, and a struct `PutOptions` for compression options.

Sequence Diagram(s)

sequenceDiagram
    participant Client
    participant PuffinManager
    participant PuffinWriter
    participant PuffinReader

    Client->>+PuffinManager: create writer()
    PuffinManager->>+PuffinWriter: initialize
    PuffinWriter-->>-PuffinManager: writer instance

    Client->>+PuffinWriter: put_blob(data, options)
    PuffinWriter-->>-Client: confirmation

    Client->>+PuffinWriter: finalize()
    PuffinWriter-->>-Client: EOF

    Client->>+PuffinManager: create reader()
    PuffinManager->>+PuffinReader: initialize
    PuffinReader-->>-PuffinManager: reader instance

    Client->>+PuffinReader: read_blob(key)
    PuffinReader-->>-Client: data

Possibly related issues

GreptimeTeam/greptimedb#4193: This update addresses the requirements to support directory put operations and compression in the Puffin library.

Poem

In the realm of Puffin's plume,
New managers and readers bloom,
Compression so tight,
Directory delight,
Libraries gain more room.
A cycle complete,
Writing and reading meet,
Efficiency, now our tune.

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codecov[bot] commented 3 months ago

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 84.81%. Comparing base (07cbaba) to head (1949510).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #4195 +/- ## ========================================== - Coverage 85.11% 84.81% -0.30% ========================================== Files 1028 1028 Lines 180903 180903 ========================================== - Hits 153970 153436 -534 - Misses 26933 27467 +534 ```

GreptimeTeam / greptimedb

feat(puffin): introduce puffin manager trait #4195