[refactor] Register storage backend for greater scalability

[fy2462]

Description

As the issue(#102) I created, fix it with this PR.

Changes

1. Create a boostrap subfolder in storage and move the initialization code for different storage into the relevant files within this folder.
2. Add the StorageBootstrapProvider class in boostrap/provider.py for bootstrap code registration.
3. Split the storeage instantiation code in yuanrong_utils.py and move it to the boostrap folder.

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[Copilot]

Pull request overview

Refactors TransferQueue’s storage initialization to a registry-based backend mechanism, moving backend-specific initialization into dedicated modules under transfer_queue/storage/backends to improve scalability and extensibility.

Changes:

• Introduces StorageBackendFactory and registers backends via decorators.
• Moves backend initialization code for SimpleStorage / MooncakeStore / Yuanrong into transfer_queue/storage/backends/*.
• Updates imports in interface/tests/scripts to point to the new backend module locations.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
transfer_queue/utils/yuanrong_utils.py	Removes Yuanrong backend init code from utils and keeps shared cleanup helpers.
transfer_queue/storage/backends/yuanrong_storage.py	Adds Yuanrong backend init implementation and registers it in the factory.
transfer_queue/storage/backends/simple_storage.py	Adds SimpleStorage backend init implementation and registers it in the factory.
transfer_queue/storage/backends/mooncake_storage.py	Adds MooncakeStore backend init implementation and registers it in the factory.
transfer_queue/storage/backends/base.py	Adds StorageBackendFactory registry/decorator.
transfer_queue/storage/backends/init.py	Imports backend modules for registration side effects and re-exports symbols.
transfer_queue/storage/init.py	Switches exports to source SimpleStorageUnit/StorageUnitData from storage.backends.
transfer_queue/interface.py	Switches storage creation logic to use the backend registry.
tests/test_simple_storage_unit.py	Updates imports to new SimpleStorage module path.
tests/test_metadata.py	Updates imports to new StorageUnitData module path.
scripts/put_benchmark.py	Updates import to new SimpleStorage module path.

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[ascend-robot]

CLA Signature Pass

fy2462, thanks for your pull request. All authors of the commits have signed the CLA. 👍

[ascend-robot]

CLA Signature Pass

fy2462, thanks for your pull request. All authors of the commits have signed the CLA. 👍

[ascend-robot]

CLA Signature Pass

fy2462, thanks for your pull request. All authors of the commits have signed the CLA. 👍

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CLA Signature Pass

fy2462, thanks for your pull request. All authors of the commits have signed the CLA. 👍

[0oshowero0]

Great work!