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from abc import ABC, abstractmethod
from dataclasses import dataclass, field
from time import perf_counter
from time import sleep
from typing import Any
from src.config.settings import SequentialProtocolSettings
from src.core.frame_state import FrameEnvelope, FrameResult
from src.core.logger import StructuredLogger
from src.server.client import HttpResponse, SimpleHttpClient
from src.server.protocol import ProtocolError
class SequentialProtocolAdapter(ABC):
"""Final yarisma icin kare sirali adapter arayuzu."""
@abstractmethod
def login(self) -> str:
raise NotImplementedError
@abstractmethod
def open_session(self) -> dict[str, Any]:
raise NotImplementedError
@abstractmethod
def fetch_next_frame(self) -> FrameEnvelope | None:
raise NotImplementedError
@abstractmethod
def download_image(self, frame: FrameEnvelope) -> bytes:
raise NotImplementedError
@abstractmethod
def build_wire_prediction(self, result: FrameResult) -> dict[str, Any]:
raise NotImplementedError
@abstractmethod
def send_wire_prediction(self, payload: dict[str, Any]) -> HttpResponse:
raise NotImplementedError
@abstractmethod
def close_session(self) -> None:
raise NotImplementedError
@dataclass(slots=True)
class FinalSequentialAdapter(SequentialProtocolAdapter):
"""Config-driven sequential adapter; batch adapter'dan bagimsizdir."""
settings: SequentialProtocolSettings
client: SimpleHttpClient = field(default_factory=SimpleHttpClient)
logger: StructuredLogger | None = None
auth_token: str | None = None
session_id: str | None = None
session_name: str | None = None
current_frame: FrameEnvelope | None = None
warmup_completed: bool = False
_warmup_wait_logged: bool = False
def __post_init__(self) -> None:
base_url = self.settings.normalized_base_url
self.url_login = f"{base_url}{self.settings.resolve_path('auth')}"
self.url_open_session = f"{base_url}{self.settings.resolve_path('open_session')}"
self.url_next_frame = f"{base_url}{self.settings.resolve_path('next_frame')}"
self.url_prediction = f"{base_url}{self.settings.resolve_path('prediction')}"
self.url_close_session = f"{base_url}{self.settings.resolve_path('close_session')}"
self.base_url = base_url
self.logger = self.logger or StructuredLogger()
def _auth_headers(self) -> dict[str, str]:
if not self.auth_token:
raise ProtocolError("Sequential adapter giris yapmadan kullanilamaz.")
return {"Authorization": f"Token {self.auth_token}"}
def login(self) -> str:
t0 = perf_counter()
response = self.client.post_form(
self.url_login,
{"username": self.settings.username, "password": self.settings.password},
timeout=self.settings.effective_timeout("request_timeout_s", self.settings.request_timeout_s),
)
latency_ms = round((perf_counter() - t0) * 1000.0, 3)
if response.status_code != 200:
self.logger.log_error(
event="sequential_login_failed",
adapter=type(self).__name__,
status_code=response.status_code,
latency_ms=latency_ms,
diagnostics={"response_text": response.text},
)
raise ProtocolError(f"Sequential login basarisiz: {response.status_code}")
payload = response.json()
token = payload.get("token")
if not token:
raise ProtocolError("Sequential login cevabinda token alani yok.")
self.auth_token = str(token)
self.logger.log_runtime(
event="sequential_login_succeeded",
adapter=type(self).__name__,
status_code=response.status_code,
latency_ms=latency_ms,
)
return self.auth_token
def open_session(self) -> dict[str, Any]:
if not self.auth_token:
self.login()
response = self.client.post_json(
self.url_open_session,
{},
headers=self._auth_headers(),
timeout=self.settings.effective_timeout("request_timeout_s", self.settings.request_timeout_s),
)
if response.status_code != 200:
raise ProtocolError(f"Sequential session acilamadi: {response.status_code} {response.text}")
payload = response.json()
self.session_id = str(payload.get("session_id"))
self.session_name = str(payload.get("session_name", self.session_id))
self.warmup_completed = False
self._warmup_wait_logged = False
self.logger.log_runtime(
event="sequential_session_opened",
adapter=type(self).__name__,
session_name=self.session_name,
status_code=response.status_code,
diagnostics={"object_limit": payload.get("object_limit"), "reference_manifest": payload.get("reference_manifest", [])},
)
return payload
def fetch_next_frame(self) -> FrameEnvelope | None:
if not self.auth_token:
self.login()
if not self.session_id:
self.open_session()
first_frame_wait = not self.warmup_completed
if first_frame_wait and not self._warmup_wait_logged:
self.logger.log_runtime(
event="sequential_warmup_wait_started",
adapter=type(self).__name__,
session_name=self.session_name,
diagnostics={"warmup_timeout_s": self.settings.warmup_timeout_s},
)
self._warmup_wait_logged = True
response = self._retry_request(
request_label="next_frame",
request_fn=lambda timeout: self.client.get_json(
self.url_next_frame,
headers=self._auth_headers(),
timeout=timeout,
),
retryable_statuses=self.settings.next_frame_retryable_statuses,
timeout=(
self.settings.effective_timeout("first_frame_timeout_s", self.settings.first_frame_timeout_s)
if first_frame_wait
else self.settings.effective_timeout("request_timeout_s", self.settings.request_timeout_s)
),
)
if response.status_code == 204:
self.current_frame = None
return None
if response.status_code != 200:
raise ProtocolError(f"Sequential frame alinamadi: {response.status_code} {response.text}")
payload = response.json()
frame = FrameEnvelope(
frame_url=str(payload["frame_url"]),
image_url=str(payload["image_url"]),
video_name=str(payload["video_name"]),
translation_x=float(payload["translation_x"]),
translation_y=float(payload["translation_y"]),
translation_z=float(payload["translation_z"]),
health_status=str(payload["health_status"]),
metadata={
"session_id": payload.get("session_id"),
"frame_id": payload.get("frame_id"),
"camera_mode": payload.get("camera_mode"),
"deadline_ms": payload.get("deadline_ms"),
},
)
self.current_frame = frame
if not self.warmup_completed:
self.warmup_completed = True
self.logger.log_runtime(
event="sequential_warmup_completed",
adapter=type(self).__name__,
session_name=self.session_name,
frame_url=frame.frame_url,
diagnostics={"frame_id": frame.metadata.get("frame_id")},
)
return frame
def resolve_image_url(self, image_url: str) -> str:
if image_url.startswith("http://") or image_url.startswith("https://"):
return image_url
normalized = image_url.lstrip("/")
if normalized.startswith("media/"):
return f"{self.base_url}{normalized}"
return f"{self.base_url}media/{normalized}"
def download_image(self, frame: FrameEnvelope) -> bytes:
response = self.client.get_bytes(
self.resolve_image_url(frame.image_url),
timeout=self.settings.effective_timeout("image_timeout_s", self.settings.image_timeout_s),
)
if response.status_code != 200:
raise ProtocolError(f"Sequential gorsel indirilemedi: {response.status_code}")
return response.body
def build_wire_prediction(self, result: FrameResult) -> dict[str, Any]:
if not self.current_frame:
raise ProtocolError("Prediction olusturmak icin aktif frame yok.")
payload: dict[str, Any] = {
"session_id": self.session_id,
"frame_id": self.current_frame.metadata.get("frame_id"),
"frame": result.frame_url,
"detected_objects": [],
"detected_translations": [],
"detected_undefined_objects": [],
}
for obj in result.detected_objects:
wire_obj: dict[str, Any] = {
"cls": f"{self.base_url}classes/{int(obj.class_id) + 1}/",
"landing_status": str(obj.landing_status),
"top_left_x": str(obj.top_left_x),
"top_left_y": str(obj.top_left_y),
"bottom_right_x": str(obj.bottom_right_x),
"bottom_right_y": str(obj.bottom_right_y),
}
# motion_status is only valid for vehicles (class_id=0) with 2026 spec values 0/1
if int(obj.class_id) == 0 and obj.motion_status in (0, 1):
wire_obj["motion_status"] = str(obj.motion_status)
payload["detected_objects"].append(wire_obj)
for translation in result.detected_translations:
payload["detected_translations"].append(
{
"translation_x": str(translation.translation_x),
"translation_y": str(translation.translation_y),
"translation_z": str(translation.translation_z),
}
)
# Task 3: detected_undefined_objects per 2026 spec
for uobj in result.detected_undefined_objects:
payload["detected_undefined_objects"].append(
{
"object_id": str(uobj.object_id),
"top_left_x": str(uobj.top_left_x),
"top_left_y": str(uobj.top_left_y),
"bottom_right_x": str(uobj.bottom_right_x),
"bottom_right_y": str(uobj.bottom_right_y),
}
)
return payload
def send_wire_prediction(self, payload: dict[str, Any]) -> HttpResponse:
if not self.auth_token:
self.login()
response = self._retry_request(
request_label="prediction",
request_fn=lambda timeout: self.client.post_json(
self.url_prediction,
payload,
headers=self._auth_headers(),
timeout=timeout,
),
retryable_statuses=self.settings.prediction_retryable_statuses,
timeout=self.settings.effective_timeout("request_timeout_s", self.settings.request_timeout_s),
)
if response.status_code != 201:
raise ProtocolError(f"Sequential prediction gonderilemedi: {response.status_code} {response.text}")
self.logger.log_runtime(
event="sequential_prediction_sent",
adapter=type(self).__name__,
session_name=self.session_name,
frame_url=str(payload.get("frame")),
status_code=response.status_code,
detected_objects=len(payload.get("detected_objects", [])),
detected_translations=len(payload.get("detected_translations", [])),
)
self.current_frame = None
return response
def close_session(self) -> None:
if not self.auth_token or not self.session_id:
self.current_frame = None
self.session_id = None
return
response = self.client.post_json(
self.url_close_session,
{"session_id": self.session_id},
headers=self._auth_headers(),
timeout=self.settings.effective_timeout("request_timeout_s", self.settings.request_timeout_s),
)
if response.status_code != 200:
raise ProtocolError(f"Sequential session kapatilamadi: {response.status_code} {response.text}")
self.logger.log_runtime(
event="sequential_session_closed",
adapter=type(self).__name__,
session_name=self.session_name,
status_code=response.status_code,
)
self.current_frame = None
self.session_id = None
self.session_name = None
self.warmup_completed = False
self._warmup_wait_logged = False
def _retry_request(
self,
*,
request_label: str,
request_fn,
retryable_statuses: list[int],
timeout: float,
) -> HttpResponse:
max_retries = int(self.settings.retry_policy.get("max_retries", 0))
backoff_s = float(self.settings.retry_policy.get("backoff_s", 0.0))
last_error: str | None = None
for attempt in range(max_retries + 1):
try:
response = request_fn(timeout)
except Exception as exc:
last_error = str(exc)
if attempt >= max_retries:
break
self.logger.log_runtime(
event="sequential_request_retrying",
adapter=type(self).__name__,
session_name=self.session_name,
fallback_mode=request_label,
diagnostics={"attempt": attempt + 1, "error": last_error},
)
sleep(backoff_s)
continue
if response.status_code not in retryable_statuses or attempt >= max_retries:
return response
self.logger.log_runtime(
event="sequential_request_retrying",
adapter=type(self).__name__,
session_name=self.session_name,
fallback_mode=request_label,
status_code=response.status_code,
diagnostics={"attempt": attempt + 1, "response_text": response.text},
)
sleep(backoff_s)
self.logger.log_error(
event="sequential_request_retry_exhausted",
adapter=type(self).__name__,
session_name=self.session_name,
fallback_mode=request_label,
diagnostics={"error": last_error, "max_retries": max_retries},
)
raise ProtocolError(f"Sequential {request_label} retry limiti doldu: {last_error}")
|