feat!: migrate from requests to httpx2 with sync/async clients - #18
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dbritto-dev wants to merge 13 commits into
Open
feat!: migrate from requests to httpx2 with sync/async clients#18dbritto-dev wants to merge 13 commits into
dbritto-dev wants to merge 13 commits into
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Replace the requests-based SDK with httpx2, restructured around a unified Client/AsyncClient (Anthropic/OpenAI SDK style) exposing reports and vendor.orders as resources. Adds automatic retries, a typed error hierarchy, with_raw_response, and upgrades models to pydantic v2. Old per-resource Client() entry points remain as deprecated shims. See MIGRATION.md for the full list of breaking and behavior changes. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Drop the unasync-based generation step. OpenAI's Python SDK (the architecture this migration follows) doesn't derive its sync classes from async ones via a script — both come out of its own spec-driven codegen as independent, hand-maintained-looking code. This repo has no such pipeline, so the faithful equivalent is to hand-maintain reports/_sync.py and vendor/orders/_sync.py directly alongside their _async.py counterparts, rather than regenerating them. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Replace automatic aiohttp-transport detection with OpenAI's actual pattern: explicit DefaultHttpxClient/DefaultAsyncHttpxClient/ DefaultAioHttpClient classes that users opt into via http_client=, never selected implicitly just because the aiohttp extra happens to be installed. This also fixes a real latent bug the change surfaced: a caller-supplied http_client= previously bypassed this SDK's auth and base URL entirely, since both were only ever applied at the underlying httpx2 client's own construction time. Auth and URL resolution now happen explicitly in BaseClient, per request, so they apply correctly regardless of whether the httpx2 client was built by this SDK or handed in by the caller. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Adds tests/test_sigv4.py, which independently recomputes the expected AWS SigV4 signature from AWS's published algorithm using only stdlib hashlib/hmac -- no botocore, no requests_aws4auth -- and checks it against SPAPIAuth._sign()'s actual output for POST-with-body and GET-without-body requests on both resource paths. This was cross-checked manually against the old requests_aws4auth implementation for a fixed request: the computed body-hash matched exactly, confirming the new botocore-backed signer is a faithful replacement, not just independently self-consistent. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This release removes requests/requests_aws4auth, upgrades models to pydantic v2, and removes amzn_selling_partner.client.auth entirely -- all documented as breaking changes in MIGRATION.md. Warrants a major version bump under semver. Note: release.yml's auto-release workflow always does a patch-only version bump on every push to main (uv version --bump patch), so on merge this will actually be tagged and published as 1.0.1, not 1.0.0 exactly -- setting the base to 1.0.0 here is what gets that bump into the 1.x line at all. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
uv version --bump patch only ever increments the patch digit, so it can never land on a version ending in .0 -- no starting value in pyproject.toml could make the previous unconditional patch-bump produce 1.0.0. Revert the manual version bump (0.1.9, matching main) and instead make release.yml bump major only while the current major version is still 0; a 0.x major bump always resets to X.0.0, so 0.1.9 -> 1.0.0 exactly on merge. This is self-limiting: once the version is 1.x or higher, every future push falls through to the normal patch bump again, so no manual revert of this workflow change is needed after this release. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
The 0.x -> 1.0.0 major-bump transition is unchanged. For everything after that, release.yml now runs `uv version --bump minor` instead of `--bump patch` on every push to main. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Also sets pyproject.toml's version to 1.0.0 directly, since a plain unconditional minor bump can never produce a version ending in .0 on its own -- on merge this becomes 1.1.0, not 1.0.0 exactly. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Mirrors the OpenAI Python SDK's _utils/_path.py: percent-encodes each interpolated value for safe use in a URL path segment, and rejects a resulting path containing a dot-segment (., .., or their percent-encoded forms), so a caller-supplied id can never redirect a request via ../ traversal. Plain f-string interpolation did neither. Wires it into the three call sites that interpolate a caller-supplied value into a URL: get_report, get_report_document, and get_purchase_order (both resources, sync and async). Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Adds tests for every previously-uncovered branch: STS credential construction/failure (only ever exercised via the autouse dummy mock before now), LWA access_token guard, retry backoff without a Retry-After header, Retry-After as an HTTP-date and as an unparseable value, connection-error retry/exhaustion, non-JSON error bodies, unmapped non-5xx status codes, with_raw_response variants that weren't called anywhere, invalid-id guards on get_report_document/get_report_document_content/ download_report_document_content, the vendor.orders deprecated shim's endpoint helpers, and DefaultAioHttpClient's ImportError fallback (via a sys.modules hide-and-reload). Also removes one genuinely dead branch in _parse_retry_after: email.utils.parsedate_to_datetime always raises ValueError for unparseable input on Python 3.10+ (verified empirically), so it never returns None -- the pre-existing None-check was unreachable given this package's Python floor. Marks the one branch that can't be deterministically forced (async double-checked-locking race, since asyncio.Lock.acquire() never suspends when uncontended) with an explained pragma: no branch instead of a misleading fake test. Raises the coverage gate from 90% to 100% to hold the line going forward. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
The 100% coverage achieved in the previous commit stands, but the gate itself stays at 90% rather than being raised to enforce it. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Was hardcoded as 'danilo-poc/0.0.1 (Language=...; Platform=...)', a
leftover POC placeholder carried over from the original requests-based
client. OpenAI's SDK uses a simple '{Name}/Python {version}' format
with no embedded platform details (those go in separate headers,
which this SDK doesn't have and isn't adding here -- out of scope for
'update the user agent'). Now: 'amzn-selling-partner/Python {version}',
reading the installed package version dynamically.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Summary
requests/requests_aws4authwithhttpx2, restructured around a unifiedClient(sync) /AsyncClient(async) pair — Anthropic/OpenAI SDK style — exposingreportsandvendor.ordersas resources. The async resource classes are hand-written; the sync ones are generated from them viaunasync(scripts/generate_sync.py, checked in CI).httpx2.Authsubclass (_auth.py); AWS STS credential refresh is offloaded to a thread on the async path so it never blocks the event loop.429/5xxand connection/timeout errors (honorsRetry-After, exponential backoff + jitter,max_retries=0to opt out), a typedAPIStatusError/APIConnectionError/APITimeoutErrorhierarchy, and awith_raw_responseaccessor on every resource method.amzn_selling_partner.reports.Client()/amzn_selling_partner.vendor.orders.Client()still work, now as deprecated shims that build aClientinternally and delegate.responsestohttpx2.MockTransport, parametrized across sync and async (tests/conftest.py'sclient_factory+maybe_await).Full breaking-change list, rationale, and a known limitation (async STS calls running in a thread) are in
MIGRATION.md.Test plan
uv run nox -s lint— ruff check + formatuv run nox -s type_check—ty check src/amzn_selling_partneruv run nox -s test— 88 tests pass, 93% coverage (gate: 90%)uv run nox -s unasync_check— generated_sync.pyfiles match regenerationuv run nox -s security_test— bandit + safety clean🤖 Generated with Claude Code