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// Copyright Epic Games, Inc. All Rights Reserved.
"use strict";
import { ZenPage } from "./page.js"
import { Fetcher } from "../util/fetcher.js"
import { Friendly } from "../util/friendly.js"
import { Table } from "../util/widgets.js"
////////////////////////////////////////////////////////////////////////////////
export class Page extends ZenPage
{
generate_crumbs() {}
async main()
{
this.set_title("network");
const providers_data = await new Fetcher().resource("stats").json();
const provider_list = providers_data["providers"] || [];
const all_stats = {};
await Promise.all(provider_list.map(async (provider) => {
all_stats[provider] = await new Fetcher().resource("stats", provider).json();
}));
this._all_stats = all_stats;
// Overview
this._render_overview(all_stats);
// Per-service request breakdown
this._render_services(all_stats, provider_list);
// Proxy connections (if available)
if (all_stats["proxy"])
{
this._render_proxy(all_stats["proxy"]);
}
// WebSocket live updates
this.connect_stats_ws((all_stats) => {
this._all_stats = all_stats;
this._populate_overview(all_stats);
this._populate_services(all_stats, Object.keys(all_stats));
});
}
_render_overview(all_stats)
{
const section = this.add_section("Overview");
this._overview_grid = section.tag().classify("grid").classify("info-tiles");
this._populate_overview(all_stats);
}
_populate_overview(all_stats)
{
this._overview_grid.inner().innerHTML = "";
const safe = (obj, path) => path.split(".").reduce((a, b) => a && a[b], obj);
// HTTP overview tile
{
const tile = this._overview_grid.tag().classify("card").classify("info-tile");
tile.tag().classify("card-title").text("HTTP");
const list = tile.tag().classify("info-props");
let totalRequests = 0;
let totalRate = 0;
for (const p in all_stats)
{
totalRequests += (safe(all_stats[p], "requests.count") || 0);
totalRate += (safe(all_stats[p], "requests.rate_1") || 0);
}
this._prop(list, "total requests", Friendly.sep(totalRequests));
if (totalRate > 0)
{
this._prop(list, "req/sec (1m)", Friendly.sep(totalRate, 1) + "/s");
}
const httpStats = all_stats["http"];
if (httpStats)
{
if (httpStats.distinct_clients)
{
this._prop(list, "distinct clients", Friendly.sep(httpStats.distinct_clients));
}
if (httpStats.distinct_sessions)
{
this._prop(list, "distinct sessions", Friendly.sep(httpStats.distinct_sessions));
}
const bytes = httpStats.bytes || {};
if (bytes.received)
{
this._prop(list, "received", Friendly.bytes(bytes.received));
}
if (bytes.sent)
{
this._prop(list, "sent", Friendly.bytes(bytes.sent));
}
const req = httpStats.requests || {};
if (req.t_avg)
{
this._prop(list, "avg latency", Friendly.duration(req.t_avg));
}
if (req.t_p95)
{
this._prop(list, "p95 latency", Friendly.duration(req.t_p95));
}
if (req.t_p99)
{
this._prop(list, "p99 latency", Friendly.duration(req.t_p99));
}
}
}
// WebSocket tile
{
const ws = all_stats["http"] ? (all_stats["http"]["websockets"] || {}) : {};
const tile = this._overview_grid.tag().classify("card").classify("info-tile");
tile.tag().classify("card-title").text("WebSocket");
const list = tile.tag().classify("info-props");
this._prop(list, "active connections", Friendly.sep(ws.active_connections || 0));
this._prop(list, "frames received", Friendly.sep(ws.frames_received || 0));
this._prop(list, "frames sent", Friendly.sep(ws.frames_sent || 0));
const totalBytes = (ws.bytes_received || 0) + (ws.bytes_sent || 0);
if (totalBytes > 0)
{
this._prop(list, "bytes received", Friendly.bytes(ws.bytes_received || 0));
this._prop(list, "bytes sent", Friendly.bytes(ws.bytes_sent || 0));
}
}
}
_render_services(all_stats, provider_list)
{
const section = this.add_section("Requests by Service");
this._services_host = section.tag();
this._populate_services(all_stats, provider_list);
}
_populate_services(all_stats, provider_list)
{
this._services_host.inner().innerHTML = "";
const safe = (obj, path) => path.split(".").reduce((a, b) => a && a[b], obj);
const table = new Table(this._services_host,
["service", "requests", "req/sec", "avg", "p95", "p99", "received", "sent"],
Table.Flag_FitLeft | Table.Flag_PackRight | Table.Flag_AlignNumeric, -1);
// Sort providers by request count (descending)
const sorted = provider_list
.filter(p => all_stats[p] && (safe(all_stats[p], "requests.count") || 0) > 0)
.sort((a, b) => (safe(all_stats[b], "requests.count") || 0) - (safe(all_stats[a], "requests.count") || 0));
for (const provider of sorted)
{
const stats = all_stats[provider];
const req = stats.requests || {};
const bytes = stats.bytes || {};
table.add_row(
provider,
Friendly.sep(req.count || 0),
req.rate_1 ? Friendly.sep(req.rate_1, 1) + "/s" : "-",
req.t_avg ? Friendly.duration(req.t_avg) : "-",
req.t_p95 ? Friendly.duration(req.t_p95) : "-",
req.t_p99 ? Friendly.duration(req.t_p99) : "-",
bytes.received ? Friendly.bytes(bytes.received) : "-",
bytes.sent ? Friendly.bytes(bytes.sent) : "-",
);
}
}
_render_proxy(proxyStats)
{
const mappings = proxyStats.mappings || [];
if (mappings.length === 0)
{
return;
}
const section = this.add_section("Proxy");
for (const mapping of mappings)
{
const sub = section.tag().classify("card").style("marginBottom", "16px");
sub.tag().classify("card-title").text(mapping.name || "mapping");
const grid = sub.tag().classify("grid").classify("info-tiles");
// Overview tile
{
const tile = grid.tag().classify("info-tile");
tile.tag().style("fontWeight", "600").style("fontSize", "12px")
.style("color", "var(--theme_g1)").style("textTransform", "uppercase")
.style("letterSpacing", "0.5px").style("marginBottom", "8px")
.text("Stats");
const list = tile.tag().classify("info-props");
this._prop(list, "active connections", Friendly.sep(mapping.activeConnections || 0));
this._prop(list, "peak connections", Friendly.sep(mapping.peakActiveConnections || 0));
this._prop(list, "total connections", Friendly.sep(mapping.totalConnections || 0));
this._prop(list, "from client", Friendly.bytes(mapping.bytesFromClient || 0));
this._prop(list, "to client", Friendly.bytes(mapping.bytesToClient || 0));
if (mapping.requestRate1)
{
this._prop(list, "req/sec (1m)", Friendly.sep(mapping.requestRate1, 1) + "/s");
}
}
// Active connections table
const connections = mapping.connections || [];
if (connections.length > 0)
{
const connHost = sub.tag().style("marginTop", "12px");
const connTable = new Table(connHost,
["client", "requests", "from client", "to client", "duration", "websocket"],
Table.Flag_FitLeft | Table.Flag_PackRight, -1);
for (const conn of connections)
{
connTable.add_row(
conn.client || "-",
Friendly.sep(conn.requests || 0),
Friendly.bytes(conn.bytesFromClient || 0),
Friendly.bytes(conn.bytesToClient || 0),
conn.durationMs ? Friendly.duration(conn.durationMs / 1000) : "-",
conn.websocket ? "yes" : "no",
);
}
}
}
}
_prop(parent, label, value)
{
const row = parent.tag().classify("info-prop");
row.tag().classify("info-prop-label").text(label);
row.tag().classify("info-prop-value").text(String(value));
}
}
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