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概述

使用无头浏览器来截图 Grafana 页面实现渲染仪表盘图像的目的。

安装

环境需要 playwright 或者远程 playwright

pip instll playwright py-grafana-render
playwright install
playwright install-dev

使用

在你的代码中引用:

from py_grafana_render import GrafanaRender

# 此处传入 Grafana 服务账户的 Token
gf = GrafanaRender(token="<your-grafana-service-token>", browser="firefox")

gf_ws = GrafanaRender(token="<your-grafana-service-token>", browser="firefox", remote_browser_ws = "ws://<your-host>:port")

# 本地安装了 playwright 浏览器
image_bytes = gf.snapshot(
    url="https://<your-domain>/d/<dashboard-uid>?xxx=xxx&kiosk",
    file_path="./test.png"
)

参数说明

GrafanaRender
参数名 必填 类型 默认值 说明
token str Grafana 服务账户的 Token
browser str firefox 使用的无头浏览器,可选值:
- chrome
- firefox
snapshot

参数:

参数名 必填 类型 默认值 说明
url str Grafana 的页面,可以包含查询字符串,不限仪表盘或面板。
width int 762 截图宽度。
height int 300 截图高度。若开启自动高度,则仪表盘将使用自动高度。
auto_height bool True 自动获取实际高度,如果无法自动获取,仅会使用默认高度。面板不会自动获取高度。
auto_height_offset int 150 自动获取的高度,会因为存在顶部筛选器导致误差,使用该值对自动高度进行一定偏移。
hide_class list None 隐藏的样式选择器列表,比如 .css-k3l5qq 是 v11.3.1 的顶部筛选器栏。
filetype str png 可选 png 或 jpeg
file_path str None 截图文件保存路径,需要包括文件名的完整路径。可以不传入,获取返回的字节流后自行保存。

返回:

  • 图片字节流:bytes 当不传入 file_path 时,可以自行存储字节流,比如发送到 s3 存储等。

提示: 若希望全屏,需要自行在 url 中加入 kiosk 查询字符串。

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