Ryan Malloy
8e8b81fe8d
Closes the unbounded-leak gap on long-lived pooled connections that Phase 28's cursor finalizer left as future work. When the finalizer can't acquire the wire lock (cross-thread GC during another thread's op), instead of leaking + logging, it enqueues the cleanup PDUs to a per-connection deferred queue. The next normal operation drains the queue under the wire lock, completing the cleanup atomically before the new op. What changed: connections.py: * Connection._pending_cleanup: list[bytes] + Connection._cleanup_lock (separate from _wire_lock - tiny critical section for list mutation only, allows enqueue without waiting for an in-flight wire op) * _enqueue_cleanup(pdus): thread-safe append, callable from any thread (including finalizers without lock ownership) * _drain_pending_cleanup(): pop-the-list + send-each-PDU. Caller must hold _wire_lock. Force-closes on wire desync (same doctrine as _raise_sq_err) * _send_pdu opportunistically drains the queue before sending. Cost is one length-check when queue is empty (the common case) cursors.py: * _finalize_cursor enqueues [_CLOSE_PDU, _RELEASE_PDU] instead of leaking when the lock is busy. WARNING demoted to DEBUG since leak no longer accumulates. Lock-order discipline: _cleanup_lock is held only for list extend/pop; _wire_lock is held for the actual wire I/O. Never grab _cleanup_lock while holding _wire_lock - the drain pops-and-clears under _cleanup_lock, then iterates under _wire_lock (which caller holds). Two new regression tests: * test_enqueue_cleanup_drains_on_next_send_pdu - verifies queue mechanism end-to-end * test_pending_cleanup_thread_safe_enqueue - 8x50 concurrent enqueues, no race-loss 72 unit + 231 integration + 28 benchmark = 331 tests; ruff clean. Hamilton audit punch list status: 0 critical, 0 high, 3 medium remaining (login errors, _send_exit cleanup, pool acquire re-entrance) - all Phase 30 scope.
108 lines
3.4 KiB
TOML
108 lines
3.4 KiB
TOML
[project]
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name = "informix-db"
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version = "2026.05.05.3"
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description = "Pure-Python driver for IBM Informix IDS — speaks the SQLI wire protocol over raw sockets. No CSDK, no JVM, no native libraries."
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readme = "README.md"
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license = { text = "MIT" }
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authors = [{ name = "Ryan Malloy", email = "ryan@supported.systems" }]
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requires-python = ">=3.10"
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keywords = ["informix", "database", "sqli", "db-api", "pep-249", "asyncio", "async"]
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classifiers = [
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"Development Status :: 4 - Beta",
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"Framework :: AsyncIO",
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"Intended Audience :: Developers",
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"License :: OSI Approved :: MIT License",
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"Operating System :: OS Independent",
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"Programming Language :: Python :: 3",
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"Programming Language :: Python :: 3 :: Only",
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"Programming Language :: Python :: 3.10",
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"Programming Language :: Python :: 3.11",
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"Programming Language :: Python :: 3.12",
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"Programming Language :: Python :: 3.13",
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"Programming Language :: Python :: 3.14",
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"Topic :: Database",
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"Topic :: Database :: Front-Ends",
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"Typing :: Typed",
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]
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dependencies = []
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[project.urls]
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Homepage = "https://github.com/rsp2k/informix-db"
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Documentation = "https://github.com/rsp2k/informix-db/tree/main/docs"
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Issues = "https://github.com/rsp2k/informix-db/issues"
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[project.optional-dependencies]
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dev = [
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"pytest>=8.0",
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"ruff>=0.6",
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]
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[build-system]
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requires = ["hatchling"]
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build-backend = "hatchling.build"
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[tool.hatch.build.targets.wheel]
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packages = ["src/informix_db"]
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[tool.hatch.build.targets.sdist]
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# Defense in depth: exclude operator-private and dev-only artifacts from the sdist
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# (the wheel doesn't ship these by default, but the sdist would).
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# See ~/.claude/rules/python.md for the full pre-publish PII audit playbook.
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exclude = [
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"CLAUDE.md", # operator-private context
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".env", ".env.local", ".env.*",
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".mcp.json", # may contain local filesystem paths
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"build/", # decompiled JDBC, downloaded JARs
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"audits/",
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"docs/CAPTURES/", # spike artifacts; tests can re-capture against the dev container
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"tests/reference/", # Java reference client — spike infra
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".pytest_cache/", ".ruff_cache/", ".mypy_cache/",
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"dist/", "*.egg-info/",
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]
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[tool.ruff]
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line-length = 100
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target-version = "py310"
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src = ["src", "tests"]
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[tool.ruff.lint]
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select = [
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"E", # pycodestyle errors
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"W", # pycodestyle warnings
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"F", # pyflakes
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"I", # isort (import sorting)
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"B", # flake8-bugbear
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"C4", # flake8-comprehensions
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"UP", # pyupgrade
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"SIM", # flake8-simplify
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"PTH", # flake8-use-pathlib
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"RUF", # ruff-specific
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]
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ignore = [
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"E501", # line too long — handled by formatter
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]
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[tool.ruff.lint.per-file-ignores]
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"tests/**" = ["B011"] # allow assert False in tests
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[tool.pytest.ini_options]
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minversion = "8.0"
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testpaths = ["tests"]
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asyncio_mode = "auto" # pytest-asyncio: auto-detect ``async def`` tests
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addopts = [
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"-ra", # short summary for non-passing
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"--strict-markers",
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"--strict-config",
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"-m", "not integration and not benchmark", # default: unit-only. Override with: pytest -m integration / -m benchmark
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]
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markers = [
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"integration: requires a running Informix container (docker compose up); skipped by default",
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"benchmark: pytest-benchmark performance test; skipped by default. Run with `make bench`.",
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]
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[dependency-groups]
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dev = [
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"pytest-asyncio>=1.3.0",
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"pytest-benchmark>=5.2.3",
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]
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