feat: calculate piece range and store the actual piece reader

[gaius-qi]

Description

This pull request introduces several changes to the dragonfly-client-storage and related modules to enhance the reading and caching mechanisms, as well as to improve the upload functionality. The most important changes include adding dual read functionality, refactoring existing read methods to use buffered readers, and updating the cache logic.

Enhancements to Reading and Caching Mechanisms:

• dragonfly-client-storage/src/content.rs: Added BufReader to improve reading performance and introduced a new method read_piece_with_dual_read to support dual read functionality. [1] [2] [3]
• dragonfly-client/src/proxy/cache.rs: Added methods to calculate piece ranges and updated the cache logic to handle HTTP range requests. [1] [2] [3]

Improvements to Upload Functionality:

• dragonfly-client-storage/src/lib.rs: Added upload_piece_with_dual_read method to support dual read during upload operations.

Refactoring and Code Simplification:

• dragonfly-client/src/proxy/mod.rs: Refactored the proxy logic to utilize the new dual read functionality and updated the cache handling logic. [1] [2] [3] [4]

Miscellaneous Updates:

• dragonfly-client/src/resource/persistent_cache_task.rs: Renamed methods to remove the term "peer" and updated related log messages for clarity. [1] [2] [3] [4] [5] [6]

Related Issue

Motivation and Context

Screenshots (if appropriate)

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 97 lines in your changes missing coverage. Please review.

Project coverage is 33.63%. Comparing base (64341d6) to head (164b6c1).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
dragonfly-client/src/proxy/cache.rs	0.00%	38 Missing ⚠️
dragonfly-client/src/proxy/mod.rs	0.00%	30 Missing ⚠️
dragonfly-client-storage/src/content.rs	0.00%	19 Missing ⚠️
dragonfly-client/src/resource/piece.rs	0.00%	8 Missing ⚠️
dragonfly-client-storage/src/lib.rs	0.00%	1 Missing ⚠️
dragonfly-client/src/grpc/dfdaemon_upload.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #906      +/-   ##
==========================================
- Coverage   33.86%   33.63%   -0.23%     
==========================================
  Files          60       60              
  Lines        9034     9095      +61     
==========================================
  Hits         3059     3059              
- Misses       5975     6036      +61     

Files with missing lines	Coverage Δ
...onfly-client/src/resource/persistent_cache_task.rs	0.00% <ø> (ø)
dragonfly-client/src/resource/task.rs	0.00% <ø> (ø)
dragonfly-client-storage/src/lib.rs	1.96% <0.00%> (-0.04%)	⬇️
dragonfly-client/src/grpc/dfdaemon_upload.rs	0.00% <0.00%> (ø)
dragonfly-client/src/resource/piece.rs	61.51% <0.00%> (-1.83%)	⬇️
dragonfly-client-storage/src/content.rs	2.89% <0.00%> (-0.41%)	⬇️
dragonfly-client/src/proxy/mod.rs	0.00% <0.00%> (ø)
dragonfly-client/src/proxy/cache.rs	0.00% <0.00%> (ø)