003 Add cdek

app/adapters/delivery_providers/cdek/__init__.py

@@ -1 +1,5 @@
 """CDEK adapter package."""
+
+from app.adapters.delivery_providers.cdek.client import CDEKProvider
+
+__all__ = ["CDEKProvider"]

app/adapters/delivery_providers/cdek/auth.py

@@ -1,6 +1,97 @@
-"""CDEK auth adapter skeleton."""
+"""CDEK OAuth2 authentication adapter."""
+
+import asyncio
+import time
+from collections.abc import Callable
+from typing import Any
+
+import httpx
+
+
+class CDEKAuthError(RuntimeError):
+    """Raised when CDEK OAuth2 flow fails."""
 
 
 class CDEKAuthClient:
+    def __init__(
+        self,
+        http_client: httpx.AsyncClient,
+        *,
+        base_url: str,
+        client_id: str,
+        client_secret: str,
+        timeout_seconds: float = 10.0,
+        expiry_skew_seconds: float = 30.0,
+        clock: Callable[[], float] | None = None,
+    ) -> None:
+        self._http_client = http_client
+        self._token_url = f"{base_url.rstrip('/')}/oauth/token"
+        self._client_id = client_id
+        self._client_secret = client_secret
+        self._timeout_seconds = timeout_seconds
+        self._expiry_skew_seconds = expiry_skew_seconds
+        self._clock = clock or time.monotonic
+        self._token: str | None = None
+        self._token_expires_at: float = 0.0
+        self._refresh_lock = asyncio.Lock()
+
     async def get_access_token(self) -> str:
-        raise NotImplementedError("CDEK auth implementation is added in task 003.")
+        if self._has_valid_token():
+            return self._cached_token()
+
+        async with self._refresh_lock:
+            if self._has_valid_token():
+                return self._cached_token()
+            return await self._fetch_access_token()
+
+    def _has_valid_token(self) -> bool:
+        return self._token is not None and self._clock() < self._token_expires_at
+
+    def _cached_token(self) -> str:
+        if self._token is None:
+            raise CDEKAuthError("CDEK OAuth token is unexpectedly missing.")
+        return self._token
+
+    async def _fetch_access_token(self) -> str:
+        try:
+            response = await self._http_client.post(
+                self._token_url,
+                data={
+                    "grant_type": "client_credentials",
+                    "client_id": self._client_id,
+                    "client_secret": self._client_secret,
+                },
+                timeout=self._timeout_seconds,
+            )
+            response.raise_for_status()
+            payload = response.json()
+            token = self._extract_access_token(payload)
+            expires_in = self._extract_expires_in(payload)
+        except (httpx.HTTPError, TypeError, ValueError) as exc:
+            raise CDEKAuthError("Failed to obtain CDEK OAuth token.") from exc
+
+        self._token = token
+        ttl_seconds = max(expires_in - self._expiry_skew_seconds, 0.0)
+        self._token_expires_at = self._clock() + ttl_seconds
+        return self._token
+
+    @staticmethod
+    def _extract_access_token(payload: Any) -> str:
+        if not isinstance(payload, dict):
+            raise ValueError("CDEK OAuth payload must be a JSON object.")
+        token = payload.get("access_token")
+        if not isinstance(token, str) or not token.strip():
+            raise ValueError("CDEK OAuth payload has no valid access_token.")
+        return token
+
+    @staticmethod
+    def _extract_expires_in(payload: Any) -> float:
+        if not isinstance(payload, dict):
+            raise ValueError("CDEK OAuth payload must be a JSON object.")
+        expires_in = payload.get("expires_in")
+        if expires_in is None:
+            raise ValueError("CDEK OAuth payload has no expires_in.")
+        parsed_expires_in = float(expires_in)
+        if parsed_expires_in < 0:
+            raise ValueError("CDEK OAuth expires_in cannot be negative.")
+        return parsed_expires_in

app/adapters/delivery_providers/cdek/client.py

@@ -1,9 +1,195 @@
-"""CDEK HTTP client adapter skeleton."""
+"""CDEK HTTP client and provider adapter."""
 
+import asyncio
+from collections.abc import Awaitable, Callable
+from typing import Any
+
+import httpx
+
+from app.adapters.delivery_providers.base import DeliveryProvider
+from app.adapters.delivery_providers.cdek.auth import CDEKAuthClient
+from app.adapters.delivery_providers.cdek.mapper import map_cdek_response
+from app.config import AdapterConfig
 from app.schemas.request import DeliveryRequest
+from app.schemas.response import DeliveryPrice
+
+
+class CDEKClientError(RuntimeError):
+    """Raised when CDEK tariff request fails."""
 
 
 class CDEKClient:
-    async def get_raw_price(self, request: DeliveryRequest) -> dict:
-        _ = request
-        raise NotImplementedError("CDEK client implementation is added in task 003.")
+    def __init__(
+        self,
+        http_client: httpx.AsyncClient,
+        auth_client: CDEKAuthClient,
+        *,
+        base_url: str,
+        timeout_seconds: float = 10.0,
+        retry_attempts: int = 2,
+        retry_backoff_seconds: float = 0.2,
+        sleep: Callable[[float], Awaitable[None]] = asyncio.sleep,
+    ) -> None:
+        self._http_client = http_client
+        self._auth_client = auth_client
+        normalized_base_url = base_url.rstrip("/")
+        self._city_lookup_url = f"{normalized_base_url}/location/cities"
+        self._tariff_url = f"{base_url.rstrip('/')}/calculator/tarifflist"
+        self._timeout_seconds = timeout_seconds
+        self._retry_attempts = retry_attempts
+        self._retry_backoff_seconds = retry_backoff_seconds
+        self._sleep = sleep
+        self._city_code_cache: dict[str, int] = {}
+
+    async def get_raw_price(self, request: DeliveryRequest) -> dict[str, Any]:
+        payload = await self._build_payload(request)
+        for attempt in range(self._retry_attempts + 1):
+            try:
+                token = await self._auth_client.get_access_token()
+                response = await self._http_client.post(
+                    self._tariff_url,
+                    json=payload,
+                    headers={"Authorization": f"Bearer {token}"},
+                    timeout=self._timeout_seconds,
+                )
+            except (httpx.TimeoutException, httpx.TransportError) as exc:
+                if attempt < self._retry_attempts:
+                    await self._sleep(self._retry_delay(attempt))
+                    continue
+                raise CDEKClientError(
+                    "CDEK tariff request failed after retry attempts."
+                ) from exc
+
+            if self._should_retry(response.status_code):
+                if attempt < self._retry_attempts:
+                    await self._sleep(self._retry_delay(attempt))
+                    continue
+                raise CDEKClientError(
+                    f"CDEK tariff request failed with status {response.status_code}."
+                )
+
+            try:
+                response.raise_for_status()
+                raw_payload = response.json()
+            except (httpx.HTTPError, TypeError, ValueError) as exc:
+                raise CDEKClientError("CDEK tariff request returned invalid payload.") from exc
+
+            if not isinstance(raw_payload, dict):
+                raise CDEKClientError("CDEK tariff payload must be a JSON object.")
+            return raw_payload
+
+        raise CDEKClientError("CDEK tariff request failed unexpectedly.")
+
+    def _retry_delay(self, attempt: int) -> float:
+        return self._retry_backoff_seconds * (attempt + 1)
+
+    @staticmethod
+    def _should_retry(status_code: int) -> bool:
+        return status_code == 429 or status_code >= 500
+
+    async def _build_payload(self, request: DeliveryRequest) -> dict[str, Any]:
+        from_city_code = await self._resolve_city_code(request.from_city)
+        to_city_code = await self._resolve_city_code(request.to_city)
+        return {
+            "from_location": {"code": from_city_code},
+            "to_location": {"code": to_city_code},
+            "packages": [
+                {
+                    "weight": int(round(request.weight_kg * 1000)),
+                    "length": int(round(request.length_cm)),
+                    "width": int(round(request.width_cm)),
+                    "height": int(round(request.height_cm)),
+                }
+            ],
+        }
+
+    async def _resolve_city_code(self, city: str) -> int:
+        normalized_city = city.strip().casefold()
+        cached_code = self._city_code_cache.get(normalized_city)
+        if cached_code is not None:
+            return cached_code
+
+        for attempt in range(self._retry_attempts + 1):
+            try:
+                token = await self._auth_client.get_access_token()
+                response = await self._http_client.get(
+                    self._city_lookup_url,
+                    params={"city": city, "country_codes": "RU", "size": 1},
+                    headers={"Authorization": f"Bearer {token}"},
+                    timeout=self._timeout_seconds,
+                )
+            except (httpx.TimeoutException, httpx.TransportError) as exc:
+                if attempt < self._retry_attempts:
+                    await self._sleep(self._retry_delay(attempt))
+                    continue
+                raise CDEKClientError(
+                    "CDEK city lookup request failed after retry attempts."
+                ) from exc
+
+            if self._should_retry(response.status_code):
+                if attempt < self._retry_attempts:
+                    await self._sleep(self._retry_delay(attempt))
+                    continue
+                raise CDEKClientError(
+                    f"CDEK city lookup failed with status {response.status_code}."
+                )
+            try:
+                response.raise_for_status()
+                body = response.json()
+            except (httpx.HTTPError, TypeError, ValueError) as exc:
+                raise CDEKClientError("CDEK city lookup returned invalid payload.") from exc
+            break
+        else:
+            raise CDEKClientError("CDEK city lookup failed unexpectedly.")
+
+        if not isinstance(body, list) or not body:
+            raise CDEKClientError(f"CDEK city lookup returned no matches for '{city}'.")
+        first_item = body[0]
+        if not isinstance(first_item, dict):
+            raise CDEKClientError("CDEK city lookup response entry must be an object.")
+        raw_city_code = first_item.get("code")
+        if raw_city_code is None:
+            raise CDEKClientError("CDEK city lookup response has no city code.")
+        try:
+            city_code = int(raw_city_code)
+        except (TypeError, ValueError) as exc:
+            raise CDEKClientError("CDEK city lookup response city code is invalid.") from exc
+
+        self._city_code_cache[normalized_city] = city_code
+        return city_code
+
+
+class CDEKProvider(DeliveryProvider):
+    name = "cdek"
+
+    def __init__(self, client: CDEKClient, *, cache_ttl_seconds: int = 900) -> None:
+        self._client = client
+        self.cache_ttl_seconds = cache_ttl_seconds
+
+    @classmethod
+    def from_adapter_config(
+        cls,
+        *,
+        http_client: httpx.AsyncClient,
+        adapter_config: AdapterConfig,
+    ) -> "CDEKProvider":
+        auth_client = CDEKAuthClient(
+            http_client=http_client,
+            base_url=adapter_config.cdek_base_url,
+            client_id=adapter_config.cdek_client_id,
+            client_secret=adapter_config.cdek_client_secret,
+            timeout_seconds=adapter_config.cdek_timeout_seconds,
+        )
+        client = CDEKClient(
+            http_client=http_client,
+            auth_client=auth_client,
+            base_url=adapter_config.cdek_base_url,
+            timeout_seconds=adapter_config.cdek_timeout_seconds,
+            retry_attempts=adapter_config.cdek_retry_attempts,
+            retry_backoff_seconds=adapter_config.cdek_retry_backoff_seconds,
+        )
+        return cls(client=client, cache_ttl_seconds=adapter_config.cdek_cache_ttl_seconds)
+
+    async def get_price(self, request: DeliveryRequest) -> DeliveryPrice:
+        raw_payload = await self._client.get_raw_price(request)
+        return map_cdek_response(raw_payload)

app/adapters/delivery_providers/cdek/mapper.py

@@ -1,8 +1,51 @@
-"""CDEK response mapper skeleton."""
+"""CDEK response mapper to unified delivery schema."""
+
+from decimal import Decimal
+from typing import Any
 
 from app.schemas.response import DeliveryPrice
 
 
-def map_cdek_response(payload: dict) -> DeliveryPrice:
-    _ = payload
-    raise NotImplementedError("CDEK mapper implementation is added in task 003.")
+class CDEKMappingError(ValueError):
+    """Raised when CDEK response cannot be mapped."""
+
+
+def map_cdek_response(payload: dict[str, Any]) -> DeliveryPrice:
+    tariff = _get_first_tariff(payload)
+
+    service_name = tariff.get("tariff_name") or tariff.get("tariff_code")
+    if service_name is None:
+        raise CDEKMappingError("CDEK tariff_name is missing.")
+
+    raw_price = tariff.get("delivery_sum")
+    if raw_price is None:
+        raise CDEKMappingError("CDEK delivery_sum is missing.")
+
+    period_min = tariff.get("period_min")
+    if period_min is None:
+        raise CDEKMappingError("CDEK period_min is missing.")
+    period_max = tariff.get("period_max", period_min)
+
+    raw_currency = tariff.get("currency") or payload.get("currency") or "RUB"
+
+    try:
+        return DeliveryPrice(
+            provider="cdek",
+            service_name=str(service_name),
+            price=Decimal(str(raw_price)),
+            currency=str(raw_currency).upper(),
+            delivery_days_min=int(period_min),
+            delivery_days_max=int(period_max),
+        )
+    except (ArithmeticError, TypeError, ValueError) as exc:
+        raise CDEKMappingError("CDEK response fields have invalid values.") from exc
+
+
+def _get_first_tariff(payload: dict[str, Any]) -> dict[str, Any]:
+    tariff_codes = payload.get("tariff_codes")
+    if not isinstance(tariff_codes, list) or not tariff_codes:
+        raise CDEKMappingError("CDEK response must include non-empty tariff_codes.")
+    tariff = tariff_codes[0]
+    if not isinstance(tariff, dict):
+        raise CDEKMappingError("CDEK tariff entry must be an object.")
+    return tariff

app/config.py

@@ -36,7 +36,12 @@ class RepositoryConfig(BaseModel):
 
 class AdapterConfig(BaseModel):
     cdek_base_url: str = "https://api.cdek.ru/v2"
-    cdek_timeout_seconds: float = 10.0
+    cdek_client_id: str = ""
+    cdek_client_secret: str = ""
+    cdek_retry_attempts: int = Field(default=2, ge=0)
+    cdek_retry_backoff_seconds: float = Field(default=0.2, ge=0)
+    cdek_timeout_seconds: float = Field(default=10.0, gt=0)
+    cdek_cache_ttl_seconds: int = Field(default=900, gt=0)
 
 
 class ObservabilityConfig(BaseModel):

config.example.yaml

@@ -15,7 +15,12 @@ repository:
 
 adapter:
   cdek_base_url: "https://api.cdek.ru/v2"
+  cdek_client_id: ""
+  cdek_client_secret: ""
+  cdek_retry_attempts: 2
+  cdek_retry_backoff_seconds: 0.2
   cdek_timeout_seconds: 10.0
+  cdek_cache_ttl_seconds: 900
 
 observability:
   service_name: "g2s-aggregator"

spec/index.md

@@ -1,7 +1,7 @@
 # Spec Tasks Index
 
 > ⚠️ This file is generated. Do not edit manually.
-> Generated at (UTC): `2026-03-07T11:14:43+00:00`
+> Generated at (UTC): `2026-03-07T11:56:55+00:00`
 
 ## Tasks
 
@@ -10,7 +10,7 @@
 | 000 | DONE | 2026-02-01 | Task format reference | `spec/tasks/000_template.md` |
 | 001 | DONE | 2026-03-07 | Create app skeleton and component configuration | `spec/tasks/001_create_app_skeleton_and_config.md` |
 | 002 | DONE | 2026-03-07 | Implement pure domain price rules | `spec/tasks/002_implement_pure_domain_quote_rules.md` |
-| 003 | TODO | 2026-03-07 | Add CDEK provider adapter | `spec/tasks/003_add_cdek_provider_adapter.md` |
+| 003 | DONE | 2026-03-07 | Add CDEK provider adapter | `spec/tasks/003_add_cdek_provider_adapter.md` |
 | 004 | TODO | 2026-03-07 | Add Redis price cache repository | `spec/tasks/004_add_redis_price_cache_repository.md` |
 | 005 | TODO | 2026-03-07 | Implement aggregator service workflow | `spec/tasks/005_implement_aggregator_service_workflow.md` |
 | 006 | TODO | 2026-03-07 | Add delivery price controller endpoint | `spec/tasks/006_add_delivery_price_controller.md` |
@@ -21,5 +21,5 @@
 ## Summary
 
 - Total: **10**
-- TODO: **7**
-- DONE: **3**
+- TODO: **6**
+- DONE: **4**

spec/tasks/003_add_cdek_provider_adapter.md

@@ -1,7 +1,7 @@
 ---
 id: 003
 title: Add CDEK provider adapter
-status: TODO
+status: DONE
 created: 2026-03-07
 ---
 

tests/adapters/delivery_providers/cdek/test_auth.py

@@ -0,0 +1,76 @@
+import asyncio
+
+import httpx
+
+from app.adapters.delivery_providers.cdek.auth import CDEKAuthClient
+
+
+def test_auth_client_reuses_valid_token_until_expiration() -> None:
+    call_count = 0
+    current_time = {"value": 100.0}
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        nonlocal call_count
+        call_count += 1
+        assert request.url.path == "/v2/oauth/token"
+        return httpx.Response(
+            200,
+            json={"access_token": "token-1", "expires_in": 120},
+            request=request,
+        )
+
+    async def scenario() -> None:
+        transport = httpx.MockTransport(handler)
+        async with httpx.AsyncClient(transport=transport) as http_client:
+            auth_client = CDEKAuthClient(
+                http_client=http_client,
+                base_url="https://api.cdek.test/v2",
+                client_id="client-id",
+                client_secret="client-secret",
+                expiry_skew_seconds=5.0,
+                clock=lambda: current_time["value"],
+            )
+
+            first = await auth_client.get_access_token()
+            second = await auth_client.get_access_token()
+
+            assert first == "token-1"
+            assert second == "token-1"
+
+    asyncio.run(scenario())
+
+    assert call_count == 1
+
+
+def test_auth_client_refreshes_expired_token() -> None:
+    responses = iter(
+        [
+            {"access_token": "token-1", "expires_in": 10},
+            {"access_token": "token-2", "expires_in": 10},
+        ]
+    )
+    current_time = {"value": 0.0}
+
+    def handler(request: httpx.Request) -> httpx.Response:
+        return httpx.Response(200, json=next(responses), request=request)
+
+    async def scenario() -> None:
+        transport = httpx.MockTransport(handler)
+        async with httpx.AsyncClient(transport=transport) as http_client:
+            auth_client = CDEKAuthClient(
+                http_client=http_client,
+                base_url="https://api.cdek.test/v2",
+                client_id="client-id",
+                client_secret="client-secret",
+                expiry_skew_seconds=0.0,
+                clock=lambda: current_time["value"],
+            )
+
+            first = await auth_client.get_access_token()
+            current_time["value"] = 11.0
+            second = await auth_client.get_access_token()
+
+            assert first == "token-1"
+            assert second == "token-2"
+
+    asyncio.run(scenario())

tests/adapters/delivery_providers/cdek/test_client.py

@@ -0,0 +1,311 @@
+import asyncio
+from typing import Any
+
+import httpx
+import pytest
+
+from app.adapters.delivery_providers.cdek.client import (
+    CDEKClient,
+    CDEKClientError,
+    CDEKProvider,
+)
+from app.config import AdapterConfig, Settings
+from app.schemas.request import DeliveryEntity, DeliveryRequest
+
+
+class StubAuthClient:
+    async def get_access_token(self) -> str:
+        return "test-token"
+
+
+class SequenceHTTPClient:
+    def __init__(self, results: list[Any]) -> None:
+        self._results = results
+        self.calls: list[dict[str, Any]] = []
+
+    def _next_result(self) -> Any:
+        return self._results[len(self.calls) - 1]
+
+    async def post(
+        self,
+        url: str,
+        *,
+        json: dict[str, Any] | None = None,
+        data: dict[str, Any] | None = None,
+        headers: dict[str, str] | None = None,
+        timeout: float | None = None,
+    ) -> httpx.Response:
+        self.calls.append(
+            {
+                "method": "POST",
+                "url": url,
+                "json": json,
+                "data": data,
+                "params": None,
+                "headers": headers,
+                "timeout": timeout,
+            }
+        )
+        result = self._next_result()
+        if isinstance(result, Exception):
+            raise result
+        return result
+
+    async def get(
+        self,
+        url: str,
+        *,
+        params: dict[str, Any] | None = None,
+        headers: dict[str, str] | None = None,
+        timeout: float | None = None,
+    ) -> httpx.Response:
+        self.calls.append(
+            {
+                "method": "GET",
+                "url": url,
+                "json": None,
+                "data": None,
+                "params": params,
+                "headers": headers,
+                "timeout": timeout,
+            }
+        )
+        result = self._next_result()
+        if isinstance(result, Exception):
+            raise result
+        return result
+
+
+class RecordingHTTPClient:
+    def __init__(self) -> None:
+        self.auth_timeouts: list[float | None] = []
+        self.city_lookup_timeouts: list[float | None] = []
+        self.tariff_timeouts: list[float | None] = []
+
+    async def get(
+        self,
+        url: str,
+        *,
+        params: dict[str, Any] | None = None,
+        headers: dict[str, str] | None = None,
+        timeout: float | None = None,
+    ) -> httpx.Response:
+        request = httpx.Request("GET", url, params=params)
+        self.city_lookup_timeouts.append(timeout)
+        assert headers == {"Authorization": "Bearer provider-token"}
+        city = params.get("city") if params else None
+        code_by_city = {"Moscow": 44, "Kazan": 424}
+        return httpx.Response(
+            200,
+            json=[{"code": code_by_city.get(city, 44), "city": city}],
+            request=request,
+        )
+
+    async def post(
+        self,
+        url: str,
+        *,
+        json: dict[str, Any] | None = None,
+        data: dict[str, Any] | None = None,
+        headers: dict[str, str] | None = None,
+        timeout: float | None = None,
+    ) -> httpx.Response:
+        request = httpx.Request("POST", url)
+        if url.endswith("/oauth/token"):
+            self.auth_timeouts.append(timeout)
+            return httpx.Response(
+                200,
+                json={"access_token": "provider-token", "expires_in": 3600},
+                request=request,
+            )
+        self.tariff_timeouts.append(timeout)
+        assert headers == {"Authorization": "Bearer provider-token"}
+        assert data is None
+        assert json is not None
+        return httpx.Response(
+            200,
+            json={
+                "tariff_codes": [
+                    {
+                        "tariff_name": "Express",
+                        "delivery_sum": "899.00",
+                        "currency": "RUB",
+                        "period_min": 1,
+                        "period_max": 2,
+                    }
+                ]
+            },
+            request=request,
+        )
+
+
+def _make_request() -> DeliveryRequest:
+    return DeliveryRequest(
+        entity=DeliveryEntity.INDIVIDUAL,
+        from_city="Moscow",
+        to_city="Kazan",
+        weight_kg=1.2,
+        length_cm=20,
+        width_cm=10,
+        height_cm=5,
+    )
+
+
+def test_cdek_client_retries_timeout_and_applies_timeout_seconds() -> None:
+    request = _make_request()
+    city_lookup_moscow = httpx.Response(
+        200,
+        json=[{"code": 44, "city": "Moscow"}],
+        request=httpx.Request("GET", "https://api.cdek.test/v2/location/cities"),
+    )
+    city_lookup_kazan = httpx.Response(
+        200,
+        json=[{"code": 424, "city": "Kazan"}],
+        request=httpx.Request("GET", "https://api.cdek.test/v2/location/cities"),
+    )
+    first_error = httpx.ReadTimeout(
+        "read timeout",
+        request=httpx.Request("POST", "https://api.cdek.test/v2/calculator/tarifflist"),
+    )
+    second_response = httpx.Response(
+        200,
+        json={"tariff_codes": [{"delivery_sum": 500}]},
+        request=httpx.Request("POST", "https://api.cdek.test/v2/calculator/tarifflist"),
+    )
+    http_client = SequenceHTTPClient(
+        [city_lookup_moscow, city_lookup_kazan, first_error, second_response]
+    )
+    sleep_calls: list[float] = []
+
+    async def fake_sleep(seconds: float) -> None:
+        sleep_calls.append(seconds)
+
+    client = CDEKClient(
+        http_client=http_client,  # type: ignore[arg-type]
+        auth_client=StubAuthClient(),  # type: ignore[arg-type]
+        base_url="https://api.cdek.test/v2",
+        timeout_seconds=10.0,
+        retry_attempts=1,
+        retry_backoff_seconds=0.5,
+        sleep=fake_sleep,
+    )
+
+    result = asyncio.run(client.get_raw_price(request))
+
+    assert result == {"tariff_codes": [{"delivery_sum": 500}]}
+    assert len(http_client.calls) == 4
+    assert http_client.calls[0]["method"] == "GET"
+    assert http_client.calls[0]["params"] == {
+        "city": "Moscow",
+        "country_codes": "RU",
+        "size": 1,
+    }
+    assert http_client.calls[1]["method"] == "GET"
+    assert http_client.calls[2]["method"] == "POST"
+    assert http_client.calls[2]["json"]["from_location"] == {"code": 44}
+    assert http_client.calls[2]["json"]["to_location"] == {"code": 424}
+    assert http_client.calls[2]["timeout"] == 10.0
+    assert sleep_calls == [0.5]
+
+
+def test_cdek_client_raises_on_non_retriable_http_error() -> None:
+    request = _make_request()
+    city_lookup_moscow = httpx.Response(
+        200,
+        json=[{"code": 44, "city": "Moscow"}],
+        request=httpx.Request("GET", "https://api.cdek.test/v2/location/cities"),
+    )
+    city_lookup_kazan = httpx.Response(
+        200,
+        json=[{"code": 424, "city": "Kazan"}],
+        request=httpx.Request("GET", "https://api.cdek.test/v2/location/cities"),
+    )
+    bad_response = httpx.Response(
+        400,
+        json={"error": "bad request"},
+        request=httpx.Request("POST", "https://api.cdek.test/v2/calculator/tarifflist"),
+    )
+    http_client = SequenceHTTPClient([city_lookup_moscow, city_lookup_kazan, bad_response])
+    client = CDEKClient(
+        http_client=http_client,  # type: ignore[arg-type]
+        auth_client=StubAuthClient(),  # type: ignore[arg-type]
+        base_url="https://api.cdek.test/v2",
+        retry_attempts=3,
+    )
+
+    with pytest.raises(CDEKClientError):
+        asyncio.run(client.get_raw_price(request))
+
+    assert len(http_client.calls) == 3
+
+
+def test_cdek_client_raises_when_city_code_not_found() -> None:
+    request = _make_request()
+    city_lookup_empty = httpx.Response(
+        200,
+        json=[],
+        request=httpx.Request("GET", "https://api.cdek.test/v2/location/cities"),
+    )
+    http_client = SequenceHTTPClient([city_lookup_empty])
+    client = CDEKClient(
+        http_client=http_client,  # type: ignore[arg-type]
+        auth_client=StubAuthClient(),  # type: ignore[arg-type]
+        base_url="https://api.cdek.test/v2",
+        retry_attempts=0,
+    )
+
+    with pytest.raises(CDEKClientError, match="no matches"):
+        asyncio.run(client.get_raw_price(request))
+
+
+def test_provider_uses_adapter_yaml_config_for_timeout_and_cache_ttl(
+    tmp_path, monkeypatch
+) -> None:
+    config_file = tmp_path / "config.yaml"
+    config_file.write_text(
+        """
+adapter:
+  cdek_base_url: "https://api.cdek.test/v2"
+  cdek_client_id: "yaml-id"
+  cdek_client_secret: "yaml-secret"
+  cdek_retry_attempts: 0
+  cdek_retry_backoff_seconds: 0.1
+  cdek_timeout_seconds: 7.5
+  cdek_cache_ttl_seconds: 777
+""".strip(),
+        encoding="utf-8",
+    )
+    monkeypatch.setenv("G2S_CONFIG_FILE", str(config_file))
+    settings = Settings()
+    http_client = RecordingHTTPClient()
+    provider = CDEKProvider.from_adapter_config(
+        http_client=http_client,  # type: ignore[arg-type]
+        adapter_config=settings.adapter,
+    )
+
+    result = asyncio.run(provider.get_price(_make_request()))
+
+    assert provider.cache_ttl_seconds == 777
+    assert http_client.auth_timeouts == [7.5]
+    assert http_client.city_lookup_timeouts == [7.5, 7.5]
+    assert http_client.tariff_timeouts == [7.5]
+    assert result.provider == "cdek"
+
+
+def test_provider_uses_default_adapter_timeout_and_cache_ttl() -> None:
+    adapter_config = AdapterConfig(
+        cdek_client_id="default-id",
+        cdek_client_secret="default-secret",
+    )
+    http_client = RecordingHTTPClient()
+    provider = CDEKProvider.from_adapter_config(
+        http_client=http_client,  # type: ignore[arg-type]
+        adapter_config=adapter_config,
+    )
+
+    asyncio.run(provider.get_price(_make_request()))
+
+    assert provider.cache_ttl_seconds == 900
+    assert http_client.auth_timeouts == [10.0]
+    assert http_client.city_lookup_timeouts == [10.0, 10.0]
+    assert http_client.tariff_timeouts == [10.0]

tests/adapters/delivery_providers/cdek/test_mapper.py

@@ -0,0 +1,33 @@
+from decimal import Decimal
+
+import pytest
+
+from app.adapters.delivery_providers.cdek.mapper import CDEKMappingError, map_cdek_response
+
+
+def test_map_cdek_response_maps_first_tariff_to_unified_model() -> None:
+    payload = {
+        "tariff_codes": [
+            {
+                "tariff_name": "Express",
+                "delivery_sum": "1234.50",
+                "currency": "rub",
+                "period_min": 2,
+                "period_max": 4,
+            }
+        ]
+    }
+
+    result = map_cdek_response(payload)
+
+    assert result.provider == "cdek"
+    assert result.service_name == "Express"
+    assert result.price == Decimal("1234.50")
+    assert result.currency == "RUB"
+    assert result.delivery_days_min == 2
+    assert result.delivery_days_max == 4
+
+
+def test_map_cdek_response_raises_for_missing_tariff_codes() -> None:
+    with pytest.raises(CDEKMappingError):
+        map_cdek_response({"tariff_codes": []})

tests/config/test_config_sections.py

@@ -7,6 +7,12 @@ def test_configuration_sections_are_loaded_from_env(monkeypatch) -> None:
     monkeypatch.setenv("G2S_BUSINESS_LOGIC__WEIGHT_ROUND_SCALE", "3")
     monkeypatch.setenv("G2S_REPOSITORY__PRICE_CACHE_TTL_SECONDS", "1200")
     monkeypatch.setenv("G2S_ADAPTER__CDEK_BASE_URL", "https://sandbox.cdek.test")
+    monkeypatch.setenv("G2S_ADAPTER__CDEK_CLIENT_ID", "env-client-id")
+    monkeypatch.setenv("G2S_ADAPTER__CDEK_CLIENT_SECRET", "env-client-secret")
+    monkeypatch.setenv("G2S_ADAPTER__CDEK_RETRY_ATTEMPTS", "4")
+    monkeypatch.setenv("G2S_ADAPTER__CDEK_RETRY_BACKOFF_SECONDS", "0.7")
+    monkeypatch.setenv("G2S_ADAPTER__CDEK_TIMEOUT_SECONDS", "8.5")
+    monkeypatch.setenv("G2S_ADAPTER__CDEK_CACHE_TTL_SECONDS", "780")
     monkeypatch.setenv("G2S_OBSERVABILITY__SERVICE_NAME", "g2s-test")
     monkeypatch.setenv("G2S_ALERTS__TELEGRAM_ENABLED", "true")
 
@@ -17,6 +23,12 @@ def test_configuration_sections_are_loaded_from_env(monkeypatch) -> None:
     assert settings.business_logic.weight_round_scale == 3
     assert settings.repository.price_cache_ttl_seconds == 1200
     assert settings.adapter.cdek_base_url == "https://sandbox.cdek.test"
+    assert settings.adapter.cdek_client_id == "env-client-id"
+    assert settings.adapter.cdek_client_secret == "env-client-secret"
+    assert settings.adapter.cdek_retry_attempts == 4
+    assert settings.adapter.cdek_retry_backoff_seconds == 0.7
+    assert settings.adapter.cdek_timeout_seconds == 8.5
+    assert settings.adapter.cdek_cache_ttl_seconds == 780
     assert settings.observability.service_name == "g2s-test"
     assert settings.alerts.telegram_enabled is True
 
@@ -35,6 +47,12 @@ repository:
   price_cache_ttl_seconds: 600
 adapter:
   cdek_base_url: "https://yaml.cdek.test"
+  cdek_client_id: "yaml-client-id"
+  cdek_client_secret: "yaml-client-secret"
+  cdek_retry_attempts: 5
+  cdek_retry_backoff_seconds: 0.4
+  cdek_timeout_seconds: 9.5
+  cdek_cache_ttl_seconds: 810
 observability:
   service_name: "g2s-yaml"
 alerts:
@@ -51,6 +69,12 @@ alerts:
     assert settings.business_logic.weight_round_scale == 4
     assert settings.repository.price_cache_ttl_seconds == 600
     assert settings.adapter.cdek_base_url == "https://yaml.cdek.test"
+    assert settings.adapter.cdek_client_id == "yaml-client-id"
+    assert settings.adapter.cdek_client_secret == "yaml-client-secret"
+    assert settings.adapter.cdek_retry_attempts == 5
+    assert settings.adapter.cdek_retry_backoff_seconds == 0.4
+    assert settings.adapter.cdek_timeout_seconds == 9.5
+    assert settings.adapter.cdek_cache_ttl_seconds == 810
     assert settings.observability.service_name == "g2s-yaml"
     assert settings.alerts.telegram_enabled is True