ollive-api / api /observability /trace_ui.py
Karthik Namboori
Deploy ollive FastAPI Docker Space
7b4b748
from __future__ import annotations
import html
import json
from typing import Any
def _json_script_payload(data: Any) -> str:
"""Embed JSON in a script tag without breaking JSON.parse."""
return json.dumps(data, ensure_ascii=False).replace("</", "<\\/")
def render_trace_dashboard(
*,
service_name: str,
stats: dict[str, Any],
traces: list[dict[str, Any]],
) -> str:
stats_json = _json_script_payload(stats)
traces_json = _json_script_payload(traces)
title = html.escape(service_name)
return f"""<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>{title} · Traces</title>
<style>
:root {{
--bg: #faf9f5;
--surface: #ffffff;
--surface-muted: #f3f1eb;
--border: #e8e6df;
--text: #141413;
--text-muted: #6b6962;
--accent: #d97757;
--accent-soft: #f4e8e1;
--ok: #2f6f4e;
--ok-soft: #e8f3ec;
--error: #b54545;
--error-soft: #fceeee;
--shadow: 0 1px 2px rgba(20, 20, 19, 0.04), 0 8px 24px rgba(20, 20, 19, 0.06);
--radius: 14px;
--font: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
--mono: ui-monospace, "SF Mono", "Cascadia Code", monospace;
}}
* {{ box-sizing: border-box; }}
body {{
margin: 0;
font-family: var(--font);
background: var(--bg);
color: var(--text);
line-height: 1.5;
-webkit-font-smoothing: antialiased;
}}
.page {{
max-width: 1120px;
margin: 0 auto;
padding: 32px 20px 64px;
}}
header {{
display: flex;
align-items: center;
justify-content: space-between;
gap: 16px;
margin-bottom: 28px;
}}
.brand {{
display: flex;
align-items: center;
gap: 12px;
}}
.mark {{
width: 36px;
height: 36px;
border-radius: 10px;
background: linear-gradient(145deg, #e8a48b, var(--accent));
box-shadow: inset 0 1px 0 rgba(255,255,255,0.35);
}}
h1 {{
margin: 0;
font-size: 1.35rem;
font-weight: 600;
letter-spacing: -0.02em;
}}
.subtitle {{
margin: 2px 0 0;
color: var(--text-muted);
font-size: 0.92rem;
}}
.actions {{
display: flex;
gap: 10px;
align-items: center;
}}
button, .link-btn {{
appearance: none;
border: 1px solid var(--border);
background: var(--surface);
color: var(--text);
border-radius: 999px;
padding: 8px 14px;
font: inherit;
font-size: 0.88rem;
cursor: pointer;
text-decoration: none;
transition: background 0.15s ease, border-color 0.15s ease;
}}
button:hover, .link-btn:hover {{
background: var(--surface-muted);
border-color: #d8d5cc;
}}
button.primary {{
background: var(--accent);
border-color: var(--accent);
color: #fff;
}}
button.primary:hover {{
background: #c96849;
border-color: #c96849;
}}
.stats {{
display: grid;
grid-template-columns: repeat(4, minmax(0, 1fr));
gap: 16px;
margin-bottom: 24px;
overflow: visible;
}}
.stat {{
position: relative;
overflow: visible;
border-radius: calc(var(--radius) + 2px);
padding: 18px 18px 16px;
cursor: help;
border: 1px solid rgba(255, 255, 255, 0.35);
box-shadow: var(--shadow);
color: #fff;
min-height: 118px;
background: linear-gradient(145deg, #e8a87c 0%, #d97757 38%, #b8653a 72%, #9a4e28 100%);
isolation: isolate;
}}
.stat:hover,
.stat:focus-within {{
z-index: 30;
}}
.stat::before {{
content: "";
position: absolute;
inset: 0;
opacity: 0.2;
background: radial-gradient(circle at top right, rgba(255, 248, 240, 0.9), transparent 58%);
pointer-events: none;
border-radius: inherit;
}}
.stat-tip {{
position: absolute;
left: 50%;
top: calc(100% + 10px);
transform: translateX(-50%);
width: max-content;
max-width: 260px;
padding: 8px 10px;
border-radius: 8px;
background: #141413;
color: #fff;
font-size: 0.78rem;
line-height: 1.45;
text-transform: none;
letter-spacing: normal;
font-weight: 500;
white-space: normal;
opacity: 0;
visibility: hidden;
pointer-events: none;
transition: opacity 0.15s ease, visibility 0.15s ease;
z-index: 40;
box-shadow: var(--shadow);
}}
.stat-tip::after {{
content: "";
position: absolute;
bottom: 100%;
left: 50%;
transform: translateX(-50%);
border: 6px solid transparent;
border-bottom-color: #141413;
}}
.stat:hover .stat-tip,
.stat:focus-within .stat-tip {{
opacity: 1;
visibility: visible;
}}
.stat-head {{
position: relative;
display: flex;
align-items: center;
justify-content: space-between;
gap: 10px;
margin-bottom: 10px;
}}
.stat-label {{
position: relative;
font-size: 0.76rem;
text-transform: uppercase;
letter-spacing: 0.08em;
opacity: 0.88;
margin-bottom: 0;
font-weight: 700;
}}
.stat-percentile {{
flex-shrink: 0;
font-size: 0.72rem;
font-weight: 800;
letter-spacing: 0.04em;
padding: 3px 9px;
border-radius: 999px;
background: rgba(255, 255, 255, 0.22);
border: 1px solid rgba(255, 255, 255, 0.35);
}}
.stat-value {{
position: relative;
font-size: 1.85rem;
font-weight: 800;
letter-spacing: -0.04em;
line-height: 1.05;
}}
.stat-sub {{
position: relative;
margin-top: 8px;
font-size: 0.78rem;
opacity: 0.86;
font-weight: 600;
}}
.panel {{
background: var(--surface);
border: 1px solid var(--border);
border-radius: calc(var(--radius) + 2px);
box-shadow: var(--shadow);
overflow: hidden;
}}
.panel-head {{
display: flex;
justify-content: space-between;
align-items: center;
padding: 16px 18px;
border-bottom: 1px solid var(--border);
background: linear-gradient(180deg, #fff, #fcfaf6);
}}
.panel-head h2 {{
margin: 0;
font-size: 1rem;
font-weight: 600;
}}
.empty {{
padding: 48px 24px;
text-align: center;
color: var(--text-muted);
}}
.trace-list {{
display: flex;
flex-direction: column;
}}
.trace {{
border-bottom: 1px solid var(--border);
}}
.trace:last-child {{ border-bottom: none; }}
.trace-row {{
display: grid;
grid-template-columns: 1fr auto;
gap: 16px;
align-items: center;
padding: 16px 18px;
cursor: pointer;
transition: background 0.12s ease;
}}
.trace-pills {{
display: flex;
flex-wrap: wrap;
gap: 8px;
justify-content: flex-end;
}}
.trace-row:hover {{ background: #fcfaf6; }}
.trace-name {{
font-weight: 600;
letter-spacing: -0.01em;
}}
.trace-meta {{
margin-top: 4px;
font-size: 0.84rem;
color: var(--text-muted);
}}
.pill {{
display: inline-flex;
align-items: center;
gap: 6px;
border-radius: 999px;
padding: 4px 10px;
font-size: 0.78rem;
font-weight: 600;
white-space: nowrap;
}}
.pill.ok {{ background: var(--ok-soft); color: var(--ok); }}
.pill.error {{ background: var(--error-soft); color: var(--error); }}
.pill.blocked {{ background: #fce8dc; color: #9a4e28; }}
.pill.neutral {{ background: var(--surface-muted); color: var(--text-muted); }}
.trace-detail {{
display: none;
padding: 0 18px 18px;
background: #fcfaf6;
}}
.trace.open .trace-detail {{ display: block; }}
.span-tree {{
display: flex;
flex-direction: column;
gap: 8px;
}}
.span-card {{
background: var(--surface);
border: 1px solid var(--border);
border-radius: 12px;
overflow: hidden;
}}
.span-row {{
display: flex;
align-items: center;
gap: 10px;
padding: 12px 14px;
cursor: pointer;
transition: background 0.12s ease;
}}
.span-row:hover {{
background: #fcfaf6;
}}
.span-chevron {{
color: var(--text-muted);
font-size: 0.95rem;
width: 12px;
flex-shrink: 0;
transition: transform 0.15s ease;
user-select: none;
}}
.span-card.open > .span-row .span-chevron {{
transform: rotate(90deg);
}}
.span-head {{
flex: 1;
display: flex;
justify-content: space-between;
gap: 12px;
align-items: start;
min-width: 0;
}}
.span-pills {{
display: flex;
flex-wrap: wrap;
gap: 6px;
justify-content: flex-end;
}}
.span-title {{
font-weight: 600;
font-size: 0.95rem;
}}
.span-sub {{
margin-top: 2px;
color: var(--text-muted);
font-size: 0.82rem;
font-family: var(--mono);
}}
.span-body {{
display: none;
padding: 12px 14px 14px 36px;
border-top: 1px solid var(--border);
background: #fcfaf6;
}}
.span-card.open > .span-body {{
display: block;
}}
.span-children {{
display: flex;
flex-direction: column;
gap: 8px;
margin-top: 10px;
padding-left: 10px;
border-left: 2px solid var(--border);
}}
.attrs {{
display: grid;
gap: 6px;
}}
.attr {{
display: grid;
grid-template-columns: 180px 1fr;
gap: 10px;
font-size: 0.84rem;
padding: 6px 0;
border-top: 1px dashed var(--border);
}}
.attr:first-child {{ border-top: none; padding-top: 0; }}
.attr-key {{
color: var(--text-muted);
font-family: var(--mono);
word-break: break-word;
}}
.attr-val {{
word-break: break-word;
}}
.footer-note {{
margin-top: 18px;
text-align: center;
color: var(--text-muted);
font-size: 0.82rem;
}}
.live-status {{
display: inline-flex;
align-items: center;
gap: 8px;
font-size: 0.82rem;
color: var(--text-muted);
}}
.live-dot {{
width: 8px;
height: 8px;
border-radius: 999px;
background: var(--ok);
box-shadow: 0 0 0 4px var(--ok-soft);
}}
.live-dot.reconnecting {{
background: #c68a2e;
box-shadow: 0 0 0 4px #f7ecd8;
}}
.live-dot.offline {{
background: var(--error);
box-shadow: 0 0 0 4px var(--error-soft);
}}
@media (max-width: 860px) {{
.stats {{ grid-template-columns: repeat(2, minmax(0, 1fr)); }}
.trace-row {{ grid-template-columns: 1fr; }}
.attr {{ grid-template-columns: 1fr; }}
.trace-pills {{ flex-wrap: wrap; }}
}}
</style>
</head>
<body>
<div class="page">
<header>
<div class="brand">
<div class="mark" aria-hidden="true"></div>
<div>
<h1>{title}</h1>
<p class="subtitle">OpenTelemetry traces · in-memory store</p>
</div>
</div>
<div class="actions">
<span class="live-status" id="live-status">
<span class="live-dot" id="live-dot" aria-hidden="true"></span>
<span id="live-label">Connecting…</span>
</span>
<a class="link-btn" href="/v1/metrics/cost-latency">Cost API</a>
<a class="link-btn" href="/v1/metrics/inference">Inference API</a>
<button class="primary" id="refresh-btn" type="button">Refresh</button>
</div>
</header>
<section class="stats" id="stats"></section>
<section class="panel">
<div class="panel-head">
<h2>Recent traces</h2>
<span class="pill neutral" id="trace-count">0 traces</span>
</div>
<div class="trace-list" id="trace-list"></div>
</section>
<p class="footer-note">Live updates via SSE. Traces reset when the Space restarts.</p>
</div>
<script id="bootstrap-stats" type="application/json">{stats_json}</script>
<script id="bootstrap-traces" type="application/json">{traces_json}</script>
<script>
const statsEl = document.getElementById("stats");
const listEl = document.getElementById("trace-list");
const countEl = document.getElementById("trace-count");
const refreshBtn = document.getElementById("refresh-btn");
const liveDot = document.getElementById("live-dot");
const liveLabel = document.getElementById("live-label");
let stream = null;
let reconnectTimer = null;
function setLiveStatus(state, label) {{
liveDot.className = "live-dot" + (state ? " " + state : "");
liveLabel.textContent = label;
}}
function escapeHtml(value) {{
return String(value)
.replaceAll("&", "&amp;")
.replaceAll("<", "&lt;")
.replaceAll(">", "&gt;")
.replaceAll('"', "&quot;");
}}
function shortId(id) {{
if (!id) return "—";
return id.length > 12 ? id.slice(0, 12) + "…" : id;
}}
function formatDurationSeconds(ms) {{
const num = Number(ms);
if (Number.isNaN(num)) return "—";
return `${{(num / 1000).toFixed(2)}} s`;
}}
function formatMsAsSeconds(ms) {{
return formatDurationSeconds(ms);
}}
function isIsoTimestamp(value) {{
return typeof value === "string" && /^\\d{{4}}-\\d{{2}}-\\d{{2}}T/.test(value);
}}
function formatTimestampIST(iso) {{
if (!iso) return "—";
const date = new Date(iso);
if (Number.isNaN(date.getTime())) return String(iso);
const datePart = new Intl.DateTimeFormat("en-GB", {{
timeZone: "Asia/Kolkata",
day: "2-digit",
month: "short",
year: "numeric",
}}).format(date);
const timePart = new Intl.DateTimeFormat("en-IN", {{
timeZone: "Asia/Kolkata",
hour: "numeric",
minute: "2-digit",
second: "2-digit",
hour12: true,
}}).format(date);
return `${{datePart}}, ${{timePart}} IST`;
}}
function formatDisplayValue(key, value) {{
const keyLower = String(key).toLowerCase();
if (
keyLower.endsWith("_ms")
|| keyLower.includes("duration_ms")
|| keyLower === "latency_ms"
) {{
const num = Number(value);
if (!Number.isNaN(num)) return formatDurationSeconds(num);
}}
if (keyLower.includes("tokens_per_sec") || keyLower === "inference.tokens_per_sec") {{
return formatTokensPerSec(value);
}}
if (isIsoTimestamp(value) || keyLower.endsWith("_time") || keyLower.endsWith(".time")) {{
return formatTimestampIST(value);
}}
return value;
}}
function formatOptionalMs(ms) {{
if (ms == null || ms === "") return "—";
return formatMsAsSeconds(ms);
}}
function formatTokensPerSec(value) {{
const num = Number(value);
if (Number.isNaN(num) || num <= 0) return "—";
return `${{num.toFixed(1)}} tok/s`;
}}
function renderStatCard(metric, percentile, value, tip, sub) {{
const percentileHtml = percentile
? `<span class="stat-percentile">${{escapeHtml(percentile)}}</span>`
: "";
const tipHtml = tip
? `<div class="stat-tip" role="tooltip">${{escapeHtml(tip)}}</div>`
: "";
return `
<div class="stat" tabindex="0">
${{tipHtml}}
<div class="stat-head">
<div class="stat-label">${{escapeHtml(metric)}}</div>
${{percentileHtml}}
</div>
<div class="stat-value">${{escapeHtml(value)}}</div>
${{sub ? `<div class="stat-sub">${{escapeHtml(sub)}}</div>` : ""}}
</div>
`;
}}
function formatUsd(value) {{
const num = Number(value);
if (Number.isNaN(num)) return "—";
if (num >= 0.01) return `$${{num.toFixed(4)}}`;
return `$${{num.toFixed(6)}}`;
}}
function renderStats(stats) {{
const inference = stats.inference || {{}};
const apiCost = stats.cost_latency || {{}};
const consumed = Number(apiCost.api_cost_consumed_usd ?? 0);
const requestCount = apiCost.total_requests ?? 0;
const cards = [
[
"API $ Consumed",
null,
formatUsd(consumed),
apiCost.estimate_tooltip || "Sum of estimated runtime + token proxy cost for all recorded requests.",
requestCount ? `${{requestCount}} request${{requestCount === 1 ? "" : "s"}}` : "No requests yet",
],
[
"Total traces",
null,
String(stats.total_traces ?? 0),
"Number of grouped request flows stored in memory.",
"",
],
[
"TTFT",
null,
formatOptionalMs(inference.ttft_ms),
"Time to first streamed token or chunk on the most recent request.",
"Last request",
],
[
"TBT",
null,
formatOptionalMs(inference.tbt_ms),
"Average gap between consecutive streamed chunks on the most recent request.",
"Last request",
],
[
"Tokens/s",
null,
formatTokensPerSec(inference.tokens_per_sec),
"Output tokens generated per second during decode on the most recent request.",
"Inference speed",
],
[
"Latency",
"p50",
formatMsAsSeconds(inference.latency_p50_ms ?? 0),
"Median end-to-end model latency across stored requests.",
inference.samples ? `${{inference.samples}} samples` : "No samples yet",
],
[
"Latency",
"p95",
formatMsAsSeconds(inference.latency_p95_ms ?? 0),
"95th percentile end-to-end model latency across stored requests.",
"",
],
[
"Tokens",
null,
`${{Math.round(inference.avg_input_tokens ?? 0)}} in / ${{Math.round(inference.avg_output_tokens ?? 0)}} out`,
"Average prompt and completion token counts using the model tokenizer.",
"Per request",
],
];
statsEl.innerHTML = cards.map(([metric, percentile, value, tip, sub]) =>
renderStatCard(metric, percentile, value, tip, sub)
).join("");
}}
function renderAttributes(attrs) {{
const entries = Object.entries(attrs || {{}});
if (!entries.length) {{
return '<div class="attr"><span class="attr-key">note</span><span class="attr-val">No attributes</span></div>';
}}
return entries.map(([key, value]) => `
<div class="attr">
<span class="attr-key">${{escapeHtml(key)}}</span>
<span class="attr-val">${{escapeHtml(formatDisplayValue(key, value))}}</span>
</div>
`).join("");
}}
function buildSpanTree(spans) {{
const nodes = (spans || []).map((span) => ({{
...span,
children: [],
}}));
const byId = new Map(nodes.map((node) => [node.span_id, node]));
const roots = [];
for (const node of nodes) {{
const parent = node.parent_span_id ? byId.get(node.parent_span_id) : null;
if (parent) {{
parent.children.push(node);
}} else {{
roots.push(node);
}}
}}
const sortNodes = (items) => {{
items.sort((a, b) => String(a.start_time || "").localeCompare(String(b.start_time || "")));
items.forEach((item) => sortNodes(item.children));
}};
sortNodes(roots);
return roots;
}}
function statusPillClass(status) {{
if (status === "error") return "error";
if (status === "blocked") return "blocked";
return "ok";
}}
function formatTraceStatus(status) {{
if (status === "blocked") return "blocked";
return status || "ok";
}}
function renderSpanNode(span, openSpanIds) {{
const isOpen = openSpanIds.has(span.span_id);
const hasChildren = (span.children || []).length > 0;
const hasAttrs = Object.keys(span.attributes || {{}}).length > 0;
const childHtml = hasChildren
? `<div class="span-children">${{span.children.map((child) => renderSpanNode(child, openSpanIds)).join("")}}</div>`
: "";
return `
<article class="span-card${{isOpen ? " open" : ""}}" data-span-id="${{escapeHtml(span.span_id)}}">
<div class="span-row" role="button" tabindex="0" aria-expanded="${{isOpen ? "true" : "false"}}">
<span class="span-chevron" aria-hidden="true">›</span>
<div class="span-head">
<div>
<div class="span-title">${{escapeHtml(span.name)}}</div>
<div class="span-sub">${{escapeHtml(span.kind)}} · ${{shortId(span.span_id)}}</div>
</div>
<div class="span-pills">
<span class="pill neutral">${{escapeHtml(formatDurationSeconds(span.duration_ms))}}</span>
${{(span.status && span.status !== "ok") ? `<span class="pill ${{statusPillClass(span.status)}}">${{escapeHtml(formatTraceStatus(span.status))}}</span>` : ""}}
</div>
</div>
</div>
<div class="span-body">
${{hasAttrs ? `<div class="attrs">${{renderAttributes(span.attributes)}}</div>` : ""}}
${{!hasAttrs && !hasChildren ? '<div class="attrs"><div class="attr"><span class="attr-key">note</span><span class="attr-val">No details</span></div></div>' : ""}}
${{childHtml}}
</div>
</article>
`;
}}
function renderSpanTree(spans, openSpanIds) {{
return buildSpanTree(spans).map((span) => renderSpanNode(span, openSpanIds)).join("");
}}
function renderTraceInferencePills(trace) {{
const pills = [
`<span class="pill neutral">${{trace.span_count}} spans</span>`,
`<span class="pill neutral">${{escapeHtml(formatDurationSeconds(trace.total_duration_ms))}}</span>`,
`<span class="pill neutral">${{trace.input_tokens || 0}} in / ${{trace.output_tokens || 0}} out tok</span>`,
];
if (trace.ttft_ms != null && trace.ttft_ms !== "") {{
pills.push(`<span class="pill neutral">TTFT ${{escapeHtml(formatDurationSeconds(trace.ttft_ms))}}</span>`);
}}
if (trace.tbt_ms != null && trace.tbt_ms !== "") {{
pills.push(`<span class="pill neutral">TBT ${{escapeHtml(formatDurationSeconds(trace.tbt_ms))}}</span>`);
}}
if (trace.tokens_per_sec != null && trace.tokens_per_sec !== "") {{
pills.push(`<span class="pill neutral">${{escapeHtml(formatTokensPerSec(trace.tokens_per_sec))}}</span>`);
}}
for (const layer of trace.guardrail_blocks || []) {{
pills.push(`<span class="pill blocked">${{escapeHtml(layer.replaceAll("_", " "))}}</span>`);
}}
pills.push(`<span class="pill ${{statusPillClass(trace.status)}}">${{escapeHtml(formatTraceStatus(trace.status))}}</span>`);
return `<div class="trace-pills">${{pills.join("")}}</div>`;
}}
function renderTraces(traces) {{
const openTraceIds = new Set(
[...listEl.querySelectorAll(".trace.open")].map((node) => node.dataset.traceId)
);
const openSpanIds = new Set(
[...listEl.querySelectorAll(".span-card.open")].map((node) => node.dataset.spanId)
);
countEl.textContent = `${{traces.length}} trace${{traces.length === 1 ? "" : "s"}}`;
if (!traces.length) {{
listEl.innerHTML = '<div class="empty">No traces yet. Send a chat request to populate this view.</div>';
return;
}}
listEl.innerHTML = traces.map((trace, index) => `
<section class="trace${{openTraceIds.has(trace.trace_id) ? " open" : ""}}" data-trace-id="${{escapeHtml(trace.trace_id)}}" data-trace-index="${{index}}">
<div class="trace-row" role="button" tabindex="0" aria-expanded="${{openTraceIds.has(trace.trace_id) ? "true" : "false"}}">
<div>
<div class="trace-name">${{escapeHtml(trace.root_span)}}</div>
<div class="trace-meta">${{shortId(trace.trace_id)}} · ${{escapeHtml(trace.service_name)}} · ${{escapeHtml(formatTimestampIST(trace.start_time))}}</div>
</div>
${{renderTraceInferencePills(trace)}}
</div>
<div class="trace-detail">
<div class="span-tree">
${{renderSpanTree(trace.spans || [], openSpanIds)}}
</div>
</div>
</section>
`).join("");
}}
listEl.addEventListener("click", (event) => {{
const traceRow = event.target.closest(".trace-row");
if (traceRow && listEl.contains(traceRow)) {{
const trace = traceRow.closest(".trace");
const open = trace.classList.toggle("open");
traceRow.setAttribute("aria-expanded", open ? "true" : "false");
return;
}}
const spanRow = event.target.closest(".span-row");
if (spanRow && listEl.contains(spanRow)) {{
event.stopPropagation();
const card = spanRow.closest(".span-card");
const open = card.classList.toggle("open");
spanRow.setAttribute("aria-expanded", open ? "true" : "false");
}}
}});
function applyPayload(payload) {{
renderStats(payload.stats || {{}});
renderTraces(payload.traces || []);
}}
async function loadData() {{
refreshBtn.disabled = true;
refreshBtn.textContent = "Refreshing…";
try {{
const response = await fetch("/v1/traces?limit=40");
const payload = await response.json();
applyPayload(payload);
}} catch (error) {{
listEl.innerHTML = '<div class="empty">Could not load traces.</div>';
setLiveStatus("offline", "Offline");
}} finally {{
refreshBtn.disabled = false;
refreshBtn.textContent = "Refresh";
}}
}}
function connectStream() {{
if (stream) {{
stream.close();
stream = null;
}}
if (reconnectTimer) {{
clearTimeout(reconnectTimer);
reconnectTimer = null;
}}
setLiveStatus("reconnecting", "Connecting…");
stream = new EventSource("/v1/traces/stream?limit=40");
stream.addEventListener("open", () => {{
setLiveStatus("", "Live");
}});
stream.addEventListener("snapshot", (event) => {{
applyPayload(JSON.parse(event.data));
setLiveStatus("", "Live");
}});
stream.addEventListener("update", (event) => {{
applyPayload(JSON.parse(event.data));
setLiveStatus("", "Live");
}});
stream.onerror = () => {{
setLiveStatus("offline", "Reconnecting…");
stream.close();
stream = null;
reconnectTimer = setTimeout(connectStream, 3000);
}};
}}
try {{
const initialStats = JSON.parse(document.getElementById("bootstrap-stats").textContent);
const initialTraces = JSON.parse(document.getElementById("bootstrap-traces").textContent);
applyPayload({{ stats: initialStats, traces: initialTraces }});
}} catch (error) {{
console.error("Failed to bootstrap trace UI:", error);
loadData();
}}
refreshBtn.addEventListener("click", loadData);
connectStream();
window.addEventListener("beforeunload", () => {{
if (stream) stream.close();
if (reconnectTimer) clearTimeout(reconnectTimer);
}});
</script>
</body>
</html>"""