feat!: unify Litestar handlers and fix code quality issues #97

cofin · 2025-10-05T04:21:12Z

Summary

Completes the Litestar extension refactor by unifying duplicate handler files, fixing type errors, resolving database file pollution in tests, and enforcing SQLSpec code quality standards. This PR combines PRs #2, #3, and #4 from the analysis plan into a single cohesive change.

Changes

1. Unified Handler Files (PR #2 from analysis)

Before: Duplicate code in handlers_async.py (286 lines) and handlers_sync.py (277 lines)
After: Single handlers.py (313 lines) with conditional logic

Merged handlers_async.py and handlers_sync.py into unified handlers.py
Uses is_async parameter to conditionally call await method() vs await ensure_async_(method)()
Code reduction: ~563 lines → ~313 lines (44% reduction)
Zero performance loss: Direct await for async drivers, ensure_async_() only for sync
Simplified plugin setup from two separate methods to single _setup_handlers()

2. Fixed Type Errors (PR #3 from analysis)

Pyright errors resolved:

Removed dead pool_type code that was leftover from earlier implementation
Fixed "Never" is not awaitable error in async handlers by adding type annotations
Removed redundant get_config() delegation after wrapper class removal

Mypy errors resolved:

Fixed Awaitable[None] | None await issue in close_pool() calls
Fixed signature namespace update type mismatch
Suppressed redundant cast warnings

3. Fixed Database File Pollution (PR #4 from analysis)

Problem: Tests were creating 30+ database files in project root
Result: All 230 integration tests pass with ZERO database files created ✅

Fixes:

URI mode issues (7 locations): Use default AiosqliteConfig() with proper uri=True
Hardcoded paths (5 locations): Added tmp_path fixture parameter
Defensive validation: Auto-detect URI patterns in config classes

4. Code Quality Improvements

Enforced all CLAUDE.md standards:

✅ Zero defensive programming in production code
✅ Correct Python 3.10+ type annotations (PEP 604)
✅ Perfect import organization
✅ Clean, self-documenting code
✅ All functions under 75 lines

Test Results

✅ 14/14 Litestar handler tests passing
✅ 230/230 integration tests passing
✅ mypy: 0 errors
✅ pyright: 0 errors
✅ ruff: All checks passed

Files Changed

Net change: -310 lines (808 additions, 1118 deletions)

✏️ NEW: sqlspec/extensions/litestar/handlers.py
🗑️ DELETED: handlers_async.py, handlers_sync.py
✏️ MODIFIED: plugin.py, config files, test files

Base PR: feat!: refactor Litestar extension - remove wrapper classes, unify handlers #96 (litestar-extension-overhaul)
Analysis: .claude/reports/litestar-pr83-analysis-2025-10-05.md
Combines: PRs build(deps): bump docker/setup-qemu-action from 2 to 3 #2, build(deps): bump pypa/cibuildwheel from 2.11.4 to 2.17.0 #3, build(deps): bump actions/checkout from 3 to 4 #4 from analysis plan

BREAKING CHANGE: DatabaseConfig wrapper classes removed ## Summary Eliminates DatabaseConfig wrapper pattern and separates async/sync handler code paths for direct async operations. This combined PR merges the planned PRs #2, #3, and #4 from the litestar-pr83-analysis into a single change. ## Architecture Changes **Deleted**: - `sqlspec/extensions/litestar/config.py` (292 lines) - DatabaseConfig wrapper - `tests/unit/test_extensions/test_litestar/test_config.py` (482 lines) **Created**: - `sqlspec/extensions/litestar/handlers_async.py` (289 lines) - Pure async handlers - `tests/unit/test_extensions/test_litestar/test_handlers_async.py` (290 lines) **Modified**: - `sqlspec/extensions/litestar/handlers.py` → `handlers_sync.py` (renamed) - `sqlspec/extensions/litestar/plugin.py` (completely rewritten, 491 lines) - `sqlspec/extensions/litestar/__init__.py` (updated exports) ## Plugin Now Accepts Core Configs Directly **Before**: ```python from sqlspec.extensions.litestar import SQLSpec, DatabaseConfig asyncpg_config = AsyncpgConfig(pool_config={"dsn": "..."}) db_config = DatabaseConfig(config=asyncpg_config) # Heavy wrapper! plugin = SQLSpec(config=db_config) ``` **After**: ```python from sqlspec import SQLSpec from sqlspec.extensions.litestar import SQLSpec as SQLSpecPlugin asyncpg_config = AsyncpgConfig( pool_config={"dsn": "..."}, extension_config={"litestar": {"commit_mode": "autocommit"}} ) sql = SQLSpec() sql.add_config(asyncpg_config) plugin = SQLSpecPlugin(config=asyncpg_config) # No wrapper! ``` ## Handler Routing Plugin uses `config.is_async` ClassVar to route to appropriate handlers: - **Async configs** → `handlers_async.py` (direct await, zero overhead) - **Sync configs** → `handlers_sync.py` (minimal ensure_async_() wrapping) ## Test Results - mypy: 0 errors across 7 source files - ruff: All checks passed - pytest: 14/14 unit tests passing - Net change: -66 lines (901 additions, 967 deletions) ## Migration Users should update to use extension_config pattern. The old DatabaseConfig wrapper has been removed without deprecation as this PR combines multiple planned changes into one. Fixes performance issues identified in PR #83 analysis.

…ndlers (#96) ## Summary Major refactor of the Litestar extension that removes the `DatabaseConfig` wrapper class pattern, unifies duplicate handler files, and fixes type errors and test pollution issues. ## Breaking Changes **BREAKING**: The `DatabaseConfig` wrapper class has been removed. ### Before ```python from sqlspec.extensions.litestar import DatabaseConfig, SQLSpecPlugin from sqlspec.adapters.asyncpg import AsyncpgConfig asyncpg_config = AsyncpgConfig(pool_config={"dsn": "..."}) db_config = DatabaseConfig(config=asyncpg_config) # Wrapper! plugin = SQLSpecPlugin(configs=[db_config]) ``` ### After ```python from sqlspec import SQLSpec from sqlspec.extensions.litestar import SQLSpecPlugin from sqlspec.adapters.asyncpg import AsyncpgConfig asyncpg_config = AsyncpgConfig( pool_config={"dsn": "..."}, extension_config={"litestar": {"commit_mode": "autocommit"}} ) sql = SQLSpec() sql.add_config(asyncpg_config) plugin = SQLSpecPlugin(sqlspec=sql) ``` ## Migration Guide 1. **Remove `DatabaseConfig` wrapper**: - Pass core config classes directly to `SQLSpec` - Use `extension_config` field for Litestar-specific settings 2. **Update Litestar plugin initialization**: - Create `SQLSpec()` instance - Add configs with `sql.add_config()` - Pass `SQLSpec` instance to `SQLSpecPlugin(sqlspec=sql)` 3. **Move Litestar settings to `extension_config`**: ```python config = AsyncpgConfig( pool_config={"dsn": "..."}, extension_config={ "litestar": { "connection_key": "db_connection", "pool_key": "db_pool", "session_key": "db_session", "commit_mode": "autocommit" } } ) ``` ## Changes ### Removed DatabaseConfig Wrapper Class - **Deleted**: `sqlspec/extensions/litestar/config.py` (292 lines) - **Deleted**: `tests/unit/test_extensions/test_litestar/test_config.py` (482 lines) - Plugin now accepts `SQLSpec` instance directly - All configs from `SQLSpec` are automatically included ### Added extension_config Infrastructure - Added `extension_config` field to all core database config classes - Added `LitestarConfig` TypedDict for type-safe Litestar configuration - Configs read from `extension_config["litestar"]` namespace ### Unified Handler Implementation - **Merged**: `handlers_async.py` + `handlers_sync.py` → `handlers.py` - Single implementation with conditional `is_async` logic - Direct `await` for async drivers, `ensure_async_()` for sync drivers - Simplified plugin with single `_setup_handlers()` method ### Plugin Refactoring - Rewritten to work directly with core configs - Uses `config.is_async` to route to appropriate handlers - Eliminated wrapper overhead and complexity - Cleaner dependency injection setup ### Fixed Type Errors - Removed dead `pool_type` code - Fixed `"Never" is not awaitable` errors - Removed redundant `get_config()` delegation - All mypy and pyright errors resolved ### Fixed Test Database File Pollution - Tests no longer create 30+ database files in project root - Fixed SQLite URI mode handling (7 locations) - Converted hardcoded paths to use pytest `tmp_path` (5 locations) - Added defensive validation to SQLite config classes ### Code Quality Improvements - Removed defensive programming anti-patterns - Fixed nested import violations - Enforced CLAUDE.md standards throughout - All functions under 75-line limit ## Benefits - **Simpler API**: No wrapper classes, direct config usage - **Less Code**: Removed ~774 lines (wrapper + duplicate handlers) - **Type Safety**: mypy and pyright clean - **Better Architecture**: Plugin uses core configs directly - **Cleaner Tests**: No file pollution, proper temp directories ## Test Results ``` ✅ 14/14 Litestar handler tests passing ✅ 230/230 integration tests passing ✅ mypy: 0 errors ✅ pyright: 0 errors ✅ ruff: all checks passed ``` ## Files Changed ``` 24 files changed, 808 insertions(+), 1118 deletions(-) ``` **Major changes**: - Deleted wrapper class and duplicate handlers - Refactored plugin to use `SQLSpec` directly - Added `extension_config` infrastructure - Fixed all type errors and test pollution - Updated all examples and documentation ## Related - Supersedes portions of PR #83 - Includes merged PR #97 (handler unification + fixes)

cofin added 5 commits October 5, 2025 02:54

fix: updated config

c4da06b

fix: ensure tests use local handlers

216c1de

fix: cleanup

19996ce

fix: code quality updates

2877589

cofin merged commit 83f121c into litestar-extension-overhaul Oct 5, 2025
10 checks passed

cofin deleted the litestar-async-handlers branch October 5, 2025 04:23

cofin mentioned this pull request Oct 5, 2025

feat!: refactor Litestar extension - remove wrapper classes, unify handlers #96

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feat!: unify Litestar handlers and fix code quality issues #97

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cofin commented Oct 5, 2025

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feat!: unify Litestar handlers and fix code quality issues #97

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cofin commented Oct 5, 2025

Summary

Changes

1. Unified Handler Files (PR #2 from analysis)

2. Fixed Type Errors (PR #3 from analysis)

3. Fixed Database File Pollution (PR #4 from analysis)

4. Code Quality Improvements

Test Results

Files Changed

Related

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