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cli/docs/adr/0004-storage-abstraction-medium.md
Snider 1d73209e89 Add Architecture Decision Records (ADRs) (#312) 
* docs: add Architecture Decision Records (ADRs)

Established a system for documenting architectural decisions.
- Created docs/adr directory
- Added ADR template (0000-template.md)
- Established ADR process in docs/adr/README.md
- Documented 4 key existing decisions (0001-0004)
- Integrated ADRs into mkdocs.yml and docs/index.md

* docs: add Architecture Decision Records (ADRs)

Established a system for documenting architectural decisions.
- Created docs/adr directory
- Added ADR template (0000-template.md)
- Established ADR process in docs/adr/README.md
- Documented 4 key existing decisions (0001-0004)
- Integrated ADRs into mkdocs.yml and docs/index.md
- Fixed formatting in pkg/io/local/client.go

* docs: add ADRs and fix auto-merge CI

- Added Architecture Decision Records (ADRs) to docs/adr/
- Integrated ADRs into mkdocs.yml and docs/index.md
- Localized .github/workflows/auto-merge.yml to fix "fatal: not a git repository" error in the reusable workflow by adding explicit --repo context.
2026-02-05 03:43:16 +00:00

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ADR 0004: Storage Abstraction via Medium Interface

  • Status: accepted
  • Deciders: Project Maintainers
  • Date: 2025-05-15

Context and Problem Statement

The application needs to support different storage backends (local file system, SFTP, WebDAV, etc.) for its workspace data. Hardcoding file system operations would make it difficult to support remote storage.

Decision Drivers

  • Flexibility in storage backends.
  • Ease of testing (mocking storage).
  • Uniform API for file operations.

Considered Options

  • Standard os package.
  • Interface abstraction (Medium).
  • spf13/afero library.

Decision Outcome

Chosen option: "Interface abstraction (Medium)". We defined a custom Medium interface in pkg/io that abstracts common file operations.

Positive Consequences

  • Application logic is agnostic of where files are actually stored.
  • Easy to implement new backends (SFTP, WebDAV).
  • Simplified testing using MockMedium.

Negative Consequences

  • Small overhead of interface calls.
  • Need to ensure all file operations go through the Medium interface.