Files
vf-cuda-grid/controller/cuda_grid_controller/dispatch.py
T
gx c396a47f4a controller: switch wire format JSON → key=val URL-encoded (matches filter)
Filter использует sscanf("%s") который stops on whitespace — нужно
URL-encode string values (text="hello world" → text=hello%20world).
Filter inline decode'ит %xx.

Также:
  tools/smoke_test_overlays.sh — integration test script (manual run
  утром когда GPU свободна; сейчас прод-сервисы заняли всю VRAM)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-19 22:43:35 +01:00

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"""Command dispatch — между MQTT/HTTP командами и ZMQ выходом.
Action kinds:
layout.set — set_layout <name>
overlay.add — add overlay (JSON payload)
overlay.remove — remove overlay by id
overlay.clear — remove all overlays
"""
from __future__ import annotations
import json
import structlog
from .config import Config, InstanceCfg
from .layouts import PREDEFINED_LAYOUTS
from .overlays import Overlay
from .state import ControllerState
from .zmq_client import FFmpegZmqClient
log = structlog.get_logger()
def _serialize_overlay_to_zmq(overlay: Overlay) -> str:
"""Сериализовать overlay в одну строку для FFmpeg process_command.
Формат: `<id> <type> <key>=<val> <key>=<val> ...`
String values URL-encoded (spaces → %20), filter-side decode'ит inline
в parse_overlay_args. Nested values (style и т.п.) skip'аются — Phase 4b
их не поддерживает.
"""
from urllib.parse import quote
parts = [overlay.id, overlay.type]
data = overlay.model_dump()
for key, value in data.items():
if key in {"id", "type"}:
continue
if value is None:
continue
if isinstance(value, (dict, list)):
continue # Phase 4b skipped — Phase 5 для nested style
if isinstance(value, bool):
value = 1 if value else 0
if isinstance(value, str):
value = quote(value, safe="") # encode spaces + всё кроме alnum
parts.append(f"{key}={value}")
return " ".join(parts)
class CommandDispatcher:
def __init__(self, cfg: Config, state: ControllerState) -> None:
self.cfg = cfg
self.state = state
self._zmq_clients: dict[str, FFmpegZmqClient] = {}
self.on_state_change = None # type: ignore[var-annotated]
self.on_event = None # type: ignore[var-annotated]
def _client(self, inst: InstanceCfg) -> FFmpegZmqClient:
c = self._zmq_clients.get(inst.name)
if c is None:
c = FFmpegZmqClient(inst.zmq_endpoint)
self._zmq_clients[inst.name] = c
return c
def _find_instance(self, name: str) -> InstanceCfg | None:
return next((i for i in self.cfg.instances if i.name == name), None)
async def handle(self, instance_name: str, kind: str, payload: str) -> None:
inst = self._find_instance(instance_name)
if inst is None:
log.warning("dispatch.unknown_instance", instance=instance_name)
return
match kind:
case "layout.set":
await self._set_layout(inst, payload.strip())
case "overlay.add":
await self._overlay_add(inst, payload)
case "overlay.remove":
await self._overlay_remove(inst, payload.strip())
case "overlay.clear":
await self._overlay_clear(inst)
case _:
log.warning(
"dispatch.unknown_kind", instance=instance_name, kind=kind
)
# ─── Layout ────────────────────────────────────────────────────
async def _set_layout(self, inst: InstanceCfg, layout: str) -> None:
if layout not in PREDEFINED_LAYOUTS:
log.warning(
"dispatch.unknown_layout",
instance=inst.name,
layout=layout,
available=PREDEFINED_LAYOUTS,
)
return
old = await self.state.get_layout(inst.name)
client = self._client(inst)
try:
reply = await client.send_command(
inst.filter_target, "layout", layout
)
log.info(
"dispatch.layout_set",
instance=inst.name,
layout=layout,
ffmpeg_reply=reply,
)
except (TimeoutError, Exception) as e:
log.error("dispatch.zmq_fail", instance=inst.name, error=str(e))
return
await self.state.set_layout(inst.name, layout)
if self.on_state_change:
await self.on_state_change(inst.name, "layout", layout)
if self.on_event:
await self.on_event(
inst.name,
"layout_switched",
{"from": old, "to": layout, "reason": "mqtt"},
)
# ─── Overlays ──────────────────────────────────────────────────
async def _overlay_add(self, inst: InstanceCfg, payload: str) -> None:
"""Payload = JSON совместимый с Overlay discriminated union."""
from pydantic import TypeAdapter
try:
overlay: Overlay = TypeAdapter(Overlay).validate_json(payload)
except Exception as e:
log.warning("dispatch.overlay_parse_fail", error=str(e), payload=payload[:200])
return
# ZMQ send → filter (Phase 4b will actually render)
client = self._client(inst)
try:
zmq_arg = _serialize_overlay_to_zmq(overlay)
reply = await client.send_command(
inst.filter_target, "add_overlay", zmq_arg
)
log.info(
"dispatch.overlay_add",
instance=inst.name,
id=overlay.id,
type=overlay.type,
ffmpeg_reply=reply,
)
except (TimeoutError, Exception) as e:
# Filter side might not support yet — log warn but persist
# в state (controller behaves correctly даже если filter ignore'ит).
log.warning(
"dispatch.overlay_zmq_fail",
instance=inst.name,
id=overlay.id,
error=str(e),
)
await self.state.add_overlay(inst.name, overlay)
if self.on_state_change:
count = len(await self.state.get_overlays(inst.name))
await self.on_state_change(inst.name, "overlays_count", str(count))
if self.on_event:
await self.on_event(
inst.name,
"overlay_added",
{"id": overlay.id, "type": overlay.type},
)
async def _overlay_remove(self, inst: InstanceCfg, overlay_id: str) -> None:
existed = await self.state.remove_overlay(inst.name, overlay_id)
if not existed:
log.warning(
"dispatch.overlay_unknown",
instance=inst.name,
id=overlay_id,
)
return
client = self._client(inst)
try:
await client.send_command(
inst.filter_target, "remove_overlay", overlay_id
)
except (TimeoutError, Exception) as e:
log.warning("dispatch.overlay_remove_zmq_fail", error=str(e))
log.info("dispatch.overlay_removed", instance=inst.name, id=overlay_id)
if self.on_state_change:
count = len(await self.state.get_overlays(inst.name))
await self.on_state_change(inst.name, "overlays_count", str(count))
if self.on_event:
await self.on_event(
inst.name, "overlay_removed", {"id": overlay_id}
)
async def _overlay_clear(self, inst: InstanceCfg) -> None:
n = await self.state.clear_overlays(inst.name)
client = self._client(inst)
try:
await client.send_command(inst.filter_target, "clear_overlays", "")
except (TimeoutError, Exception) as e:
log.warning("dispatch.overlay_clear_zmq_fail", error=str(e))
log.info("dispatch.overlays_cleared", instance=inst.name, count=n)
if self.on_state_change:
await self.on_state_change(inst.name, "overlays_count", "0")
if self.on_event:
await self.on_event(inst.name, "overlays_cleared", {"count": n})
# ─── Cleanup ───────────────────────────────────────────────────
async def close(self) -> None:
for c in self._zmq_clients.values():
await c.close()