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feat(story-2.3): Request/Response immutability helper expansion #10

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Merged
lesnik512 merged 7 commits into from
May 31, 2026
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feat(story-2.3): Request/Response immutability helper expansion #10

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5bcf9a4
docs(story-2.3): design for Request/Response immutability helpers
lesnik512 May 31, 2026
704999d
feat(story-2.3): Request.with_headers merge helper
lesnik512 May 31, 2026
8b865ae
feat(story-2.3): Request.with_cookie and with_cookies helpers
lesnik512 May 31, 2026
3f83216
feat(story-2.3): Request.with_extension and with_extensions helpers
lesnik512 May 31, 2026
913d0a4
feat(story-2.3): Response.with_headers and with_status helpers
lesnik512 May 31, 2026
059d2e1
docs(story-2.3): CHANGELOG entry for immutability helper expansion
lesnik512 May 31, 2026
96cb627
docs(story-2.3): implementation plan for immutability helpers
lesnik512 May 31, 2026
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -21,5 +21,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
- `ResponseDecoder` protocol (`@runtime_checkable`) and default `PydanticDecoder` adapter — single-parse-pass JSON decoding via `pydantic.TypeAdapter.validate_json(bytes)`; a module-level `@functools.lru_cache(maxsize=None)` factory (`_get_adapter`) memoizes one `TypeAdapter` per `response_model` across the process so warm-path requests pay zero adapter-construction cost; `pydantic.ValidationError` surfaces unchanged to the caller (Story 1.5).
- `Middleware` protocol (`@runtime_checkable`) and `Next` callable type alias (`Callable[[Request], Awaitable[Response]]`); private `compose(middlewares, transport)` chain composer at `httpware._internal.chain` using a recursive closure fold with `transport.__call__` as the bottom of the chain. No exception handling inside `compose`, so `asyncio.CancelledError` and user-raised exceptions propagate untouched (Story 2.1).
- Phase-shortcut decorators `@before_request`, `@after_response`, `@on_error` for lifecycle hooks without authoring a full `Middleware` class. `@on_error` catches `Exception` only (so `asyncio.CancelledError` propagates); its handler may return a `Response` to recover or `None` to re-raise (Story 2.2).
- Request and Response immutability helper expansion: `Request.with_headers`, `with_cookie`, `with_cookies`, `with_extension`, `with_extensions`; `Response.with_headers`, `with_status`. Plural helpers merge mappings (incoming keys override existing); singular helpers add or replace a single entry. No validation, no header-key normalization — matches the existing `with_header` semantics from Story 1.2 (Story 2.3).

[Unreleased]: https://github.com/modern-python/httpware/commits/main
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