智能错误检测 + 提示版本（原生 HTML + JS + ECharts），这样：
* D" v1 G* R) Q' M9 u! z
如果数据为空或 metricId 未定义，会显示 “暂无监控数据”；
# Y4 N; y+ B5 q如果 Gnocchi API 401（Token 过期），会提示 “Token 无效”；
6 K1 \: J( G% m
如果取到数据，则正常绘图。
4 Y& p" n5 G7 x; o
✅ 完整示例（直接可替换你的前端代码）
; ]& K/ j1 s o9 N; Q
假设你模板变量是 metrics 和 token：
) h0 g4 G; U T; L' _" S0 t$ a<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8" />
<title>资源监控</title>
<script src="https://cdn.jsdelivr.net/npm/echarts/dist/echarts.min.js"></script>
<style>
.chart-box {
width: 48%;
height: 300px;
display: inline-block;
margin: 10px;
border: 1px solid #eee;
position: relative;
}
.chart-error {
position: absolute;
top: 45%;
left: 50%;
transform: translate(-50%, -50%);
color: #888;
font-size: 14px;
}
</style>
</head>
<body>
<h2>资源监控</h2>
/ M5 k& `6 k: S; w: g6 o& K8 ~: W <div id="cpu" class="chart-box"></div>
<div id="memory" class="chart-box"></div>
<div id="disk" class="chart-box"></div>
<div id="network" class="chart-box"></div>
4 H* A! h- @" h' \
<script>
const metrics = {
cpu: "{{ metrics.cpu }}",
memory: "{{ metrics.memory.usage }}",
disk: "{{ metrics.disk.root.size }}",
network: "{{ metrics.compute.instance.booting.time }}"
};
m, ?$ r" O! A- u% h" V
const token = "{{ token }}"; // 后端传入 Keystone Token
! K) f( ?9 x: I' Z$ }# v4 _4 M
const charts = {
cpu: echarts.init(document.getElementById('cpu')),
memory: echarts.init(document.getElementById('memory')),
disk: echarts.init(document.getElementById('disk')),
network: echarts.init(document.getElementById('network'))
};
7 J' d ]6 d. ~% ]( s! Q' U, ^ const titles = {
cpu: "CPU 使用率",
memory: "内存使用率",
disk: "磁盘 I/O",
network: "网络活动"
};
1 j! g$ f& ~ e; E. A
const colors = {
cpu: "#e74c3c",
memory: "#3498db",
disk: "#2ecc71",
network: "#9b59b6"
};
" v2 g! U, ^2 M+ Q# W5 k4 R* I async function loadMetric(chart, metricId, title, color) {
// 没有 metricId，直接提示
if (!metricId || metricId === 'None' || metricId === 'undefined') {
chart.clear();
chart.getDom().innerHTML = `<div class="chart-error">⚠️ 暂无监控数据</div>`;
return;
}
. J. L) Z& s9 x( S5 K% T! X try {
const res = await fetch(`http://controller:8041/v1/metric/${metricId}/measures`, {
headers: { "X-Auth-Token": token }
});
( Y0 p. n8 F: q6 t" l3 r" y if (res.status === 401) {
chart.getDom().innerHTML = `<div class="chart-error">
发表于 2025-11-9 21:17:28