# storage-options Specification

## Purpose
TBD - created by archiving change fix-storage-options-error-handling. Update Purpose after archive.
## Requirements
### Requirement: Storage options use specific exception types

Storage option classes under `fsspeckit.storage_options` SHALL use specific
exception types for configuration and credential problems instead of generic
exceptions.

#### Scenario: Invalid configuration raises ValueError
- **WHEN** a storage options class detects invalid or inconsistent arguments
  (e.g. unsupported protocol, conflicting parameters)
- **THEN** it SHALL raise `ValueError` with a clear explanation of the
  configuration problem.

#### Scenario: Missing credentials raise informative errors
- **WHEN** a helper attempts to build a filesystem or store from incomplete
  credentials or environment variables
- **THEN** it SHALL raise a specific exception (e.g. `ValueError` or
  `FileNotFoundError` for missing config files)
- **AND** the message SHALL describe what is missing and how to fix it.

### Requirement: Storage options avoid silencing configuration errors

Storage option helpers SHALL NOT silently ignore configuration or credential
errors and SHALL avoid broad `except Exception:` blocks that swallow failures.

#### Scenario: Catch-all handlers log and re-raise
- **WHEN** a storage options helper needs a catch-all exception handler
- **THEN** it SHALL log the error (including which configuration path failed)
  using the project logger
- **AND** it SHALL re-raise the exception instead of returning a partially
  configured object.

### Requirement: GitLab storage options SHALL validate configuration parameters

GitLabStorageOptions SHALL validate all configuration parameters to prevent runtime errors and provide clear error messages.

#### Scenario: Timeout validation in storage options
- **WHEN** GitLabStorageOptions is created with timeout parameter
- **THEN** options SHALL validate timeout is positive number
- **AND** SHALL enforce maximum timeout (3600 seconds)
- **AND** SHALL raise ValueError with descriptive message for invalid values
- **AND** SHALL document valid range in error message

#### Scenario: Maximum pages validation in storage options
- **WHEN** GitLabStorageOptions is created with max_pages parameter
- **THEN** options SHALL validate max_pages is positive integer
- **AND** SHALL enforce reasonable maximum (10000 pages)
- **AND** SHALL raise ValueError with descriptive message for invalid values
- **AND** SHALL document valid range in error message

#### Scenario: Environment variable validation
- **WHEN** GitLabStorageOptions loads configuration from environment variables
- **THEN** options SHALL validate timeout and max_pages from environment
- **AND** SHALL use sensible defaults for missing or invalid values
- **AND** SHALL log warnings when using fallback values

#### Scenario: Configuration validation error messages
- **WHEN** GitLabStorageOptions detects invalid configuration
- **THEN** error message SHALL clearly indicate which parameter is invalid
- **AND** SHALL provide guidance on valid range or format
- **AND** SHALL include current value for debugging
- **AND** SHALL suggest corrective action when possible

### Requirement: Storage options SHALL provide resource cleanup guidance

Storage options classes SHALL provide clear guidance on resource cleanup for filesystems that require explicit cleanup.

#### Scenario: Resource cleanup documentation
- **WHEN** GitLabStorageOptions creates GitLabFileSystem instance
- **THEN** options SHALL document need for explicit cleanup
- **AND** SHALL provide example of proper cleanup pattern
- **AND** SHALL recommend context manager usage when appropriate

#### Scenario: Cleanup method availability
- **WHEN** GitLabStorageOptions creates filesystem instance
- **THEN** resulting filesystem SHALL provide close() method
- **AND** storage options SHALL document cleanup requirements
- **AND** SHALL indicate when cleanup is optional vs required

