gx
19ddaf2dde
MVP Phase 8 feature: headless Chromium snapshot URL → PNG → existing icon
overlay infrastructure. Use case — Grafana dashboard, web chat, любой
HTML widget с transparent background поверх video composite.
Архитектура:
BrowserRenderer launches один shared Chromium instance, per-dashboard
page. Loop:
page.reload (для свежих данных — Grafana auto-refresh не triggers
в headless mode без user interaction)
page.add_style_tag (re-inject transparent CSS — reload teryает styles)
page.wait_for_selector (если selector задан)
page.screenshot(omit_background=True) или locator(selector).screenshot
save PNG к icon_dir
dispatcher._reload_icon → filter re-reads atlas
Config (dynamic_overlays.dashboards в controller.yaml):
id, target_instance, cell, url, x, y, w_px, h_px,
refresh_sec (default 2.0s, min 0.5s — frequent reload bad см. stutter memory),
inject_css (default — transparent background + zero margins),
selector (optional CSS selector — экспортить только конкретный element),
viewport_w/h (override page viewport, default = w_px/h_px;
полезно при selector чтобы page layout не collapsed),
wait_until, page_timeout_ms, opacity, z_order.
Dockerfile:
+ pip install playwright
+ playwright install --with-deps chromium (~170MB Chromium + ~150MB system libs)
Если dashboards не нужны — можно убрать оба install'а (playwright
import lazy, BrowserRenderer.start() graceful no-op без playwright).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
49 lines
1.5 KiB
Docker
49 lines
1.5 KiB
Docker
# cuda-grid-controller — Python sidecar для vf_cuda_grid filter.
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FROM python:3.11-slim AS base
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ENV PYTHONDONTWRITEBYTECODE=1 \
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PYTHONUNBUFFERED=1 \
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PIP_NO_CACHE_DIR=1
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WORKDIR /app
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# ffmpeg для snapshot endpoint — нужен basic CPU build (RTSP read + PNG output).
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# Размер: ~120 MB additional (ffmpeg + libs); приемлемо для controller image.
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RUN apt-get update && apt-get install -y --no-install-recommends \
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ffmpeg \
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&& rm -rf /var/lib/apt/lists/*
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# Install deps первым layer — пересборка только при изменении pyproject.toml
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COPY pyproject.toml ./
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RUN pip install --no-cache-dir \
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fastapi \
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"uvicorn[standard]" \
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pydantic \
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pydantic-settings \
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aiomqtt \
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pyzmq \
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pyyaml \
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structlog \
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typer \
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sse-starlette \
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pillow \
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httpx \
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playwright
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# Playwright headless Chromium для browser-rendered overlays (Grafana, чаты).
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# install-deps добавляет system libs (libnss3, libxkbcommon0, libgbm1...).
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# Chromium ~170 MB + system deps ~150 MB. Можно отключить если dashboards
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# не нужны: убрать `playwright` из pip и закомментировать ниже.
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RUN playwright install --with-deps chromium
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# Source code
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COPY cuda_grid_controller ./cuda_grid_controller
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COPY examples ./examples
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RUN pip install --no-cache-dir -e .
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EXPOSE 8080
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ENTRYPOINT ["cuda-grid-controller"]
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CMD ["--config", "/app/controller.yaml"]
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