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This commit is contained in:
upstream-mirror
591
telemetry/server/dashboard/dashboard.go
Normal file
591
telemetry/server/dashboard/dashboard.go
Normal file
@@ -0,0 +1,591 @@
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package dashboard
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import (
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"net/http"
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)
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type Handler struct{}
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func NewHandler() *Handler {
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return &Handler{}
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}
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func (h *Handler) ServeIndex(w http.ResponseWriter, r *http.Request) {
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html := `<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>SeaweedFS Telemetry Dashboard</title>
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<script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
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<style>
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body {
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font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
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margin: 0;
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padding: 20px;
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background-color: #f5f5f5;
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}
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.container {
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max-width: 1200px;
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margin: 0 auto;
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}
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.header {
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background: white;
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padding: 20px;
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border-radius: 8px;
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margin-bottom: 20px;
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box-shadow: 0 2px 4px rgba(0,0,0,0.1);
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}
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.stats-grid {
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display: grid;
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grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
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gap: 20px;
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margin-bottom: 20px;
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}
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.stat-card {
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background: white;
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padding: 20px;
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border-radius: 8px;
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box-shadow: 0 2px 4px rgba(0,0,0,0.1);
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}
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.stat-value {
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font-size: 2em;
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font-weight: bold;
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color: #2196F3;
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}
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.stat-label {
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color: #666;
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margin-top: 5px;
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}
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.stat-label select {
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border: none;
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background: none;
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||||
color: inherit;
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font: inherit;
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padding: 0;
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cursor: pointer;
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text-decoration: underline dotted;
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}
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.chart-container {
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background: white;
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padding: 20px;
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border-radius: 8px;
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margin-bottom: 20px;
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box-shadow: 0 2px 4px rgba(0,0,0,0.1);
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}
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.chart-title {
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font-size: 1.2em;
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font-weight: bold;
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margin-bottom: 15px;
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}
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.chart-subtitle {
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color: #666;
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margin: -10px 0 15px;
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}
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.loading {
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text-align: center;
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padding: 40px;
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color: #666;
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}
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.cluster-lookup {
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display: flex;
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gap: 10px;
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margin-bottom: 15px;
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}
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.cluster-lookup input {
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flex: 1;
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padding: 8px 12px;
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border: 1px solid #ddd;
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border-radius: 4px;
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font-family: monospace;
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}
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.cluster-lookup button {
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padding: 8px 20px;
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border: none;
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border-radius: 4px;
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background: #2196F3;
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color: white;
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cursor: pointer;
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}
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.error {
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background: #ffebee;
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color: #c62828;
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padding: 15px;
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border-radius: 4px;
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margin: 10px 0;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<div class="header">
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<h1>SeaweedFS Telemetry Dashboard</h1>
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<p>Privacy-respecting usage analytics for SeaweedFS</p>
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</div>
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<div id="loading" class="loading">Loading telemetry data...</div>
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<div id="error" class="error" style="display: none;"></div>
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<div id="dashboard" style="display: none;">
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<div class="stats-grid">
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<div class="stat-card">
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<div class="stat-value" id="totalInstances">-</div>
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<div class="stat-label">Total Instances (30 days)</div>
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</div>
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<div class="stat-card">
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<div class="stat-value" id="activeInstances">-</div>
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<div class="stat-label">Active Instances (7 days)</div>
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</div>
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<div class="stat-card">
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<div class="stat-value" id="confirmedInstances">-</div>
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<div class="stat-label">Confirmed Clusters
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(<select id="confirmDays" onchange="updateConfirmed()">
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||||
<option value="1">1+</option>
|
||||
<option value="3">3+</option>
|
||||
<option value="7" selected>7+</option>
|
||||
<option value="14">14+</option>
|
||||
<option value="30">30+</option>
|
||||
</select> days)</div>
|
||||
</div>
|
||||
<div class="stat-card">
|
||||
<div class="stat-value" id="totalVersions">-</div>
|
||||
<div class="stat-label">Different Versions</div>
|
||||
</div>
|
||||
<div class="stat-card">
|
||||
<div class="stat-value" id="totalOS">-</div>
|
||||
<div class="stat-label">Operating Systems</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="chart-container">
|
||||
<div class="chart-title">Version Distribution</div>
|
||||
<div style="position: relative; height: 320px;">
|
||||
<canvas id="versionChart"></canvas>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="chart-container">
|
||||
<div class="chart-title">Versions Over Time</div>
|
||||
<div class="chart-subtitle" id="versionSeriesTotal"></div>
|
||||
<div style="position: relative; height: 420px;">
|
||||
<canvas id="versionSeriesChart"></canvas>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="chart-container">
|
||||
<div class="chart-title">Operating System Distribution</div>
|
||||
<div style="position: relative; height: 320px;">
|
||||
<canvas id="osChart"></canvas>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="chart-container">
|
||||
<div class="chart-title">Cluster Sizes Over Time</div>
|
||||
<div class="chart-subtitle" id="clusterSizesTotal"></div>
|
||||
<div style="position: relative; height: 420px;">
|
||||
<canvas id="clusterSizeChart"></canvas>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="chart-container">
|
||||
<div class="chart-title">Volume Servers Over Time</div>
|
||||
<div class="chart-subtitle" id="clusterServersTotal"></div>
|
||||
<div style="position: relative; height: 420px;">
|
||||
<canvas id="serverChart"></canvas>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="chart-container">
|
||||
<div class="chart-title">Per-Cluster History</div>
|
||||
<div class="cluster-lookup">
|
||||
<input type="text" id="clusterIdInput" placeholder="cluster UUID"
|
||||
onkeydown="if (event.key === 'Enter') loadClusterHistory()">
|
||||
<button onclick="loadClusterHistory()">Load</button>
|
||||
</div>
|
||||
<div id="clusterHistoryError" class="error" style="display: none;"></div>
|
||||
<div id="clusterHistoryCharts" style="display: none;">
|
||||
<canvas id="clusterDiskChart" width="400" height="150"></canvas>
|
||||
<canvas id="clusterVolumeChart" width="400" height="150"></canvas>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<script>
|
||||
let charts = {};
|
||||
let clusterSizeIds = [];
|
||||
|
||||
async function loadDashboard() {
|
||||
try {
|
||||
// Load stats
|
||||
const statsResponse = await fetch('/api/stats');
|
||||
const stats = await statsResponse.json();
|
||||
|
||||
// Load per-cluster sizes over time
|
||||
const sizesResponse = await fetch('/api/cluster-sizes?days=30&limit=20');
|
||||
const sizes = await sizesResponse.json();
|
||||
|
||||
// Load the fleet's version make-up over time
|
||||
const versionsResponse = await fetch('/api/versions?days=30&limit=8');
|
||||
const versions = await versionsResponse.json();
|
||||
|
||||
// Show the dashboard before drawing into it: a canvas in a
|
||||
// display:none container measures zero, and a pie sized from
|
||||
// that never grows back.
|
||||
document.getElementById('loading').style.display = 'none';
|
||||
document.getElementById('dashboard').style.display = 'block';
|
||||
|
||||
updateStats(stats);
|
||||
updateCharts(stats);
|
||||
updateVersions(versions);
|
||||
updateClusterSizes(sizes);
|
||||
} catch (error) {
|
||||
console.error('Error loading dashboard:', error);
|
||||
showError('Failed to load telemetry data: ' + error.message);
|
||||
}
|
||||
}
|
||||
|
||||
let latestStats = {};
|
||||
|
||||
function updateStats(stats) {
|
||||
latestStats = stats;
|
||||
document.getElementById('totalInstances').textContent = stats.total_instances || 0;
|
||||
document.getElementById('activeInstances').textContent = stats.active_instances || 0;
|
||||
updateConfirmed();
|
||||
document.getElementById('totalVersions').textContent = Object.keys(stats.versions || {}).length;
|
||||
document.getElementById('totalOS').textContent = Object.keys(stats.os_distribution || {}).length;
|
||||
}
|
||||
|
||||
// Servers from before confirmed_by_days fall back to the fixed
|
||||
// 7-day count.
|
||||
function updateConfirmed() {
|
||||
const days = document.getElementById('confirmDays').value;
|
||||
const byDays = latestStats.confirmed_by_days || {};
|
||||
const count = byDays[days] !== undefined ? byDays[days] : latestStats.confirmed_instances;
|
||||
document.getElementById('confirmedInstances').textContent = count || 0;
|
||||
}
|
||||
|
||||
function updateCharts(stats) {
|
||||
createPieChart('versionChart', 'Version Distribution', stats.versions || {});
|
||||
createPieChart('osChart', 'Operating System Distribution', stats.os_distribution || {});
|
||||
}
|
||||
|
||||
function createPieChart(canvasId, title, data) {
|
||||
const ctx = document.getElementById(canvasId).getContext('2d');
|
||||
|
||||
if (charts[canvasId]) {
|
||||
charts[canvasId].destroy();
|
||||
}
|
||||
|
||||
const labels = Object.keys(data);
|
||||
const values = Object.values(data);
|
||||
|
||||
charts[canvasId] = new Chart(ctx, {
|
||||
type: 'pie',
|
||||
data: {
|
||||
labels: labels,
|
||||
datasets: [{
|
||||
data: values,
|
||||
backgroundColor: [
|
||||
'#FF6384', '#36A2EB', '#FFCE56', '#4BC0C0',
|
||||
'#9966FF', '#FF9F40', '#FF6384', '#C9CBCF'
|
||||
]
|
||||
}]
|
||||
},
|
||||
options: {
|
||||
responsive: true,
|
||||
// Without this the canvas keeps its 2:1 attribute ratio at
|
||||
// the card's full width, drawing a pie taller than the card.
|
||||
maintainAspectRatio: false,
|
||||
plugins: {
|
||||
legend: {
|
||||
position: 'bottom'
|
||||
}
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
function createLineChart(canvasId, label, labels, data, color) {
|
||||
const ctx = document.getElementById(canvasId).getContext('2d');
|
||||
|
||||
if (charts[canvasId]) {
|
||||
charts[canvasId].destroy();
|
||||
}
|
||||
|
||||
charts[canvasId] = new Chart(ctx, {
|
||||
type: 'line',
|
||||
data: {
|
||||
labels: labels,
|
||||
datasets: [{
|
||||
label: label,
|
||||
data: data,
|
||||
borderColor: color,
|
||||
backgroundColor: color + '20',
|
||||
fill: true,
|
||||
tension: 0.1
|
||||
}]
|
||||
},
|
||||
options: {
|
||||
responsive: true,
|
||||
scales: {
|
||||
y: {
|
||||
beginAtZero: true
|
||||
}
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
// Decimal units, so the round numbers the chart picks for its ticks
|
||||
// come out as round labels.
|
||||
function formatBytes(bytes) {
|
||||
const units = ['B', 'kB', 'MB', 'GB', 'TB', 'PB'];
|
||||
let value = bytes || 0, unit = 0;
|
||||
while (value >= 1000 && unit < units.length - 1) {
|
||||
value /= 1000;
|
||||
unit++;
|
||||
}
|
||||
return (unit === 0 ? value : value.toFixed(value >= 100 ? 0 : 1)) + ' ' + units[unit];
|
||||
}
|
||||
|
||||
// Fixed hues rather than the evenly spaced ones the cluster stacks use:
|
||||
// a handful of versions is a set you read, and evenly spaced hues put
|
||||
// pairs next to each other that colour-blind readers can't separate.
|
||||
const versionColors = ['#2a78d6', '#eb6834', '#1baf7a', '#eda100',
|
||||
'#e87ba4', '#008300', '#4a3aa7', '#e34948'];
|
||||
|
||||
// One stacked band per version: the band is how many clusters ran that
|
||||
// version that day, the top of the stack is the confirmed fleet, so the
|
||||
// chart shows both how it grows and what it upgrades to. The pie above
|
||||
// it is the same fleet on the last of these days.
|
||||
function updateVersions(series) {
|
||||
const versions = series.versions || [];
|
||||
const dates = series.dates || [];
|
||||
const total = series.total_clusters || 0;
|
||||
document.getElementById('versionSeriesTotal').textContent =
|
||||
total + ' cluster' + (total === 1 ? '' : 's') + ' on ' + (dates[dates.length - 1] || 'no data');
|
||||
|
||||
// Newest release on the floor, oldest on top: the current release
|
||||
// is the band being read, and one anchored to the baseline reads
|
||||
// straight off the axis instead of riding on everything below it.
|
||||
// Colours follow the same order, so a release keeps its colour as
|
||||
// older ones age out from the top.
|
||||
const datasets = versions.slice().reverse().map((v, i) =>
|
||||
band(v.version, v.clusters, '#ffffff', versionColors[i % versionColors.length], 2));
|
||||
if (series.other) {
|
||||
datasets.push(band('other (' + series.other.count + ' versions)', series.other.clusters,
|
||||
'#ffffff', '#9a9a94', 2));
|
||||
}
|
||||
|
||||
stackedArea('versionSeriesChart', dates, datasets, value => value, { plugins: [bandLabels] });
|
||||
}
|
||||
|
||||
// Writes each version into its own band, so the chart reads without
|
||||
// matching colours against the legend. Bands too thin to hold the text
|
||||
// keep it, and the halo carries it over whatever it crosses.
|
||||
const bandLabels = {
|
||||
id: 'bandLabels',
|
||||
afterDatasetsDraw(chart) {
|
||||
const ctx = chart.ctx;
|
||||
ctx.save();
|
||||
ctx.font = '600 12px -apple-system, BlinkMacSystemFont, sans-serif';
|
||||
ctx.textAlign = 'center';
|
||||
ctx.textBaseline = 'middle';
|
||||
ctx.lineJoin = 'round';
|
||||
chart.data.datasets.forEach((dataset, d) => {
|
||||
const meta = chart.getDatasetMeta(d);
|
||||
if (meta.hidden) return;
|
||||
// Label where the band is thickest, so the text has room.
|
||||
let at = -1, thickest = 0;
|
||||
dataset.data.forEach((value, i) => {
|
||||
if (value > thickest) {
|
||||
thickest = value;
|
||||
at = i;
|
||||
}
|
||||
});
|
||||
const point = at >= 0 && meta.data[at];
|
||||
if (!point) return;
|
||||
const below = d === 0 ? chart.scales.y.getPixelForValue(0)
|
||||
: chart.getDatasetMeta(d - 1).data[at].y;
|
||||
if (below - point.y < 18) return;
|
||||
ctx.lineWidth = 3;
|
||||
ctx.strokeStyle = 'rgba(255, 255, 255, 0.85)';
|
||||
ctx.strokeText(dataset.label, point.x, (point.y + below) / 2);
|
||||
ctx.fillStyle = '#1a1a1a';
|
||||
ctx.fillText(dataset.label, point.x, (point.y + below) / 2);
|
||||
});
|
||||
ctx.restore();
|
||||
}
|
||||
};
|
||||
|
||||
// Disk usage and volume servers both drawn as one stacked band per
|
||||
// cluster over time: the band is that cluster's share, the top of the
|
||||
// stack is the fleet total. Clusters beyond the requested limit are
|
||||
// summed into a trailing "other" band so the stack still adds up.
|
||||
function updateClusterSizes(series) {
|
||||
const clusters = series.clusters || [];
|
||||
const dates = series.dates || [];
|
||||
const count = series.cluster_count || 0;
|
||||
const servers = series.total_servers || 0;
|
||||
const across = ' across ' + count + ' cluster' + (count === 1 ? '' : 's') +
|
||||
' on ' + (dates[dates.length - 1] || 'no data');
|
||||
|
||||
document.getElementById('clusterSizesTotal').textContent = formatBytes(series.total_disk) + across;
|
||||
document.getElementById('clusterServersTotal').textContent =
|
||||
servers + ' volume server' + (servers === 1 ? '' : 's') + across;
|
||||
|
||||
clusterSizeIds = clusters.map(c => c.cluster_id);
|
||||
if (series.other) {
|
||||
clusterSizeIds.push(null);
|
||||
}
|
||||
|
||||
stackedChart('clusterSizeChart', dates, clusters, series.other, 'disk', formatBytes);
|
||||
stackedChart('serverChart', dates, clusters, series.other, 'servers', value => value);
|
||||
}
|
||||
|
||||
// The stacks share one cluster order, so a cluster keeps its colour and
|
||||
// its legend entry across both of them.
|
||||
function stackedChart(canvasId, dates, clusters, other, key, format) {
|
||||
const datasets = clusters.map((c, i) => {
|
||||
// Evenly spaced hues keep neighbouring bands distinguishable.
|
||||
const hue = Math.round(i * 360 / clusters.length);
|
||||
return band(c.cluster_id.slice(0, 8), c[key],
|
||||
'hsl(' + hue + ', 65%, 45%)', 'hsla(' + hue + ', 65%, 55%, 0.75)');
|
||||
});
|
||||
if (other) {
|
||||
datasets.push(band('other (' + other.count + ')', other[key],
|
||||
'#9E9E9E', 'rgba(158, 158, 158, 0.6)'));
|
||||
}
|
||||
|
||||
stackedArea(canvasId, dates, datasets, format, {
|
||||
onClick: (event, elements) => {
|
||||
const id = elements.length && clusterSizeIds[elements[0].datasetIndex];
|
||||
if (id) {
|
||||
document.getElementById('clusterIdInput').value = id;
|
||||
loadClusterHistory();
|
||||
}
|
||||
},
|
||||
// The legend shows shortened ids; the tooltip has room for the
|
||||
// full one to paste into the lookup box.
|
||||
label: item => (clusterSizeIds[item.datasetIndex] || item.dataset.label) + ': ' + format(item.raw)
|
||||
});
|
||||
}
|
||||
|
||||
// Draws the bands as one stack, so their heights add up to the day's
|
||||
// total. hooks.onClick, hooks.label and hooks.plugins are optional.
|
||||
function stackedArea(canvasId, dates, datasets, format, hooks) {
|
||||
hooks = hooks || {};
|
||||
const ctx = document.getElementById(canvasId).getContext('2d');
|
||||
if (charts[canvasId]) {
|
||||
charts[canvasId].destroy();
|
||||
}
|
||||
charts[canvasId] = new Chart(ctx, {
|
||||
type: 'line',
|
||||
data: { labels: dates, datasets: datasets },
|
||||
plugins: hooks.plugins,
|
||||
options: {
|
||||
responsive: true,
|
||||
maintainAspectRatio: false,
|
||||
interaction: { mode: 'band', intersect: false },
|
||||
onClick: hooks.onClick,
|
||||
plugins: {
|
||||
legend: { position: 'bottom', labels: { boxWidth: 12, font: { size: 11 } } },
|
||||
tooltip: {
|
||||
callbacks: {
|
||||
label: hooks.label || (item => item.dataset.label + ': ' + format(item.raw))
|
||||
}
|
||||
}
|
||||
},
|
||||
scales: {
|
||||
x: { ticks: { maxRotation: 0, autoSkip: true, maxTicksLimit: 12 } },
|
||||
y: {
|
||||
stacked: true,
|
||||
beginAtZero: true,
|
||||
ticks: { precision: 0, callback: value => format(value) }
|
||||
}
|
||||
}
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
// Hover and click resolve to the band the pointer is inside. Chart.js's
|
||||
// built-in modes match the nearest line, which on a stack of thin bands
|
||||
// is rarely the one under the pointer.
|
||||
Chart.Interaction.modes.band = function(chart, event) {
|
||||
const last = chart.data.labels.length - 1;
|
||||
if (last < 0) return [];
|
||||
const index = Math.min(Math.max(Math.round(chart.scales.x.getValueForPixel(event.x)), 0), last);
|
||||
const value = chart.scales.y.getValueForPixel(event.y);
|
||||
let stacked = 0;
|
||||
for (let d = 0; d < chart.data.datasets.length; d++) {
|
||||
stacked += chart.data.datasets[d].data[index] || 0;
|
||||
if (value <= stacked) {
|
||||
return [{ element: chart.getDatasetMeta(d).data[index], datasetIndex: d, index: index }];
|
||||
}
|
||||
}
|
||||
return [];
|
||||
};
|
||||
|
||||
function band(label, data, borderColor, backgroundColor, borderWidth) {
|
||||
return {
|
||||
label: label,
|
||||
data: data,
|
||||
borderColor: borderColor,
|
||||
backgroundColor: backgroundColor,
|
||||
borderWidth: borderWidth || 1,
|
||||
pointRadius: 0,
|
||||
pointHitRadius: 8,
|
||||
fill: true,
|
||||
tension: 0.1
|
||||
};
|
||||
}
|
||||
|
||||
async function loadClusterHistory() {
|
||||
const id = document.getElementById('clusterIdInput').value.trim();
|
||||
const errorDiv = document.getElementById('clusterHistoryError');
|
||||
const chartsDiv = document.getElementById('clusterHistoryCharts');
|
||||
if (!id) return;
|
||||
errorDiv.style.display = 'none';
|
||||
try {
|
||||
const resp = await fetch('/api/history?cluster_id=' + encodeURIComponent(id) + '&days=90');
|
||||
if (!resp.ok) {
|
||||
throw new Error(resp.status === 404 ? 'Unknown cluster UUID' : 'Request failed: ' + resp.status);
|
||||
}
|
||||
const history = await resp.json();
|
||||
const samples = history.samples || [];
|
||||
if (samples.length === 0) {
|
||||
throw new Error('No samples recorded for this cluster yet');
|
||||
}
|
||||
const dates = samples.map(s => new Date(s.ts * 1000).toISOString().slice(0, 10));
|
||||
chartsDiv.style.display = 'block';
|
||||
createLineChart('clusterDiskChart', 'Disk Usage (GB)', dates,
|
||||
samples.map(s => Math.round(s.disk / (1024 * 1024 * 1024) * 100) / 100), '#FF9800');
|
||||
createLineChart('clusterVolumeChart', 'Volumes', dates,
|
||||
samples.map(s => s.volumes), '#9C27B0');
|
||||
} catch (error) {
|
||||
chartsDiv.style.display = 'none';
|
||||
errorDiv.style.display = 'block';
|
||||
errorDiv.textContent = error.message;
|
||||
}
|
||||
}
|
||||
|
||||
function showError(message) {
|
||||
document.getElementById('loading').style.display = 'none';
|
||||
document.getElementById('error').style.display = 'block';
|
||||
document.getElementById('error').textContent = message;
|
||||
}
|
||||
|
||||
// Load dashboard on page load
|
||||
loadDashboard();
|
||||
|
||||
// Refresh every 5 minutes
|
||||
setInterval(loadDashboard, 5 * 60 * 1000);
|
||||
</script>
|
||||
</body>
|
||||
</html>`
|
||||
|
||||
w.Header().Set("Content-Type", "text/html")
|
||||
w.WriteHeader(http.StatusOK)
|
||||
w.Write([]byte(html))
|
||||
}
|
||||
Reference in New Issue
Block a user