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// module-servermon.js — Server monitoring + self-optimization telemetry
// Commands: server, servers, server-check, server-remove, monitor, system-health
class ServerMonitorModule {
constructor() {
this.commands = {}; this.terminal = null;
this.servers = this.loadServers(); this.monitorInterval = null;
this._latencyLog = [];
this._maxLatencyEntries = 200;
}
getHelpInfo() {
return {
'server': 'server <name> <url> — Add a server to monitor',
'servers': 'servers — List all monitored servers',
'server-check': 'server-check <name-or-index> — Check a server status',
'server-remove': 'server-remove <name-or-index> — Remove a server',
'monitor': 'monitor — Toggle auto-monitoring (checks every 60s)',
'system-health': 'system-health — Show tool latency, module load times, VFS size, and error rates',
'test-net': 'test-net — Check proxy API, Ollama, and internet connectivity',
};
}
registerCommands() {
this.commands['server'] = (args) => this.addServer(args);
this.commands['servers'] = () => this.listServers();
this.commands['server-check'] = (args) => this.checkServer(args);
this.commands['server-remove'] = (args) => this.removeServer(args);
this.commands['monitor'] = (args) => this.toggleMonitor(args);
this.commands['system-health'] = () => this.showSystemHealth();
// v4.5.43: test-net — check proxy/ollama/internet connectivity
this.commands['test-net'] = () => this.testNetwork();
}
async testNetwork() {
this.terminal.print('🌐 Network Test', 'header');
// 1. Browser online
const online = navigator.onLine;
this.terminal.print(` ${online ? '✅' : '🔴'} Browser: ${online ? 'online' : 'offline'}`, online ? 'success' : 'error');
// 2. Proxy API
try {
const t0 = Date.now();
const resp = await fetch('/api/stats', { signal: AbortSignal.timeout(5000) });
const ms = Date.now() - t0;
if (resp.ok) {
const data = await resp.json();
this.terminal.print(` ✅ Proxy: ok (${ms}ms, uptime ${data.uptime_seconds || '?'}s)`, 'success');
} else {
this.terminal.print(` 🔴 Proxy: HTTP ${resp.status}`, 'error');
}
} catch (e) {
this.terminal.print(` 🔴 Proxy: ${e.message || 'unreachable'}`, 'error');
}
// 3. Ollama
const ollamaOk = this.terminal.ollamaManager && this.terminal.ollamaManager.connected;
this.terminal.print(` ${ollamaOk ? '✅' : '🟡'} Ollama: ${ollamaOk ? 'connected' : 'disconnected'}`, ollamaOk ? 'success' : 'warning');
// 4. Internet (test by fetching a small file)
try {
const t0 = Date.now();
const resp = await fetch('https://duckduckgo.com/?q=test', { method: 'HEAD', signal: AbortSignal.timeout(5000), mode: 'no-cors' });
const ms = Date.now() - t0;
this.terminal.print(` ✅ Internet: reachable (${ms}ms)`, 'success');
} catch (e) {
this.terminal.print(` 🔴 Internet: ${e.message || 'unreachable'}`, 'error');
}
}
logToolCall(name, durationMs, error) {
this._latencyLog.push({
name,
duration: durationMs,
error: !!error,
time: Date.now()
});
if (this._latencyLog.length > this._maxLatencyEntries) {
this._latencyLog = this._latencyLog.slice(-this._maxLatencyEntries);
}
// Persist every 20 calls
if (this._latencyLog.length % 20 === 0) {
this._persistLatency();
}
}
_persistLatency() {
try {
this.terminal.fs.fsWriteJSON('/system/metrics/tool-latency.json', this._latencyLog.slice(-100));
} catch (e) {}
}
_loadLatency() {
try {
const data = this.terminal.fs.fsReadJSON('/system/metrics/tool-latency.json');
if (data) this._latencyLog = data;
} catch (e) {}
}
showSystemHealth() {
this._loadLatency();
const fs = this.terminal.fs;
// Tool latency stats
const toolStats = {};
for (const entry of this._latencyLog) {
if (!toolStats[entry.name]) toolStats[entry.name] = { calls: 0, totalMs: 0, errors: 0, maxMs: 0 };
toolStats[entry.name].calls++;
toolStats[entry.name].totalMs += entry.duration;
toolStats[entry.name].errors += entry.error ? 1 : 0;
toolStats[entry.name].maxMs = Math.max(toolStats[entry.name].maxMs, entry.duration);
}
this.terminal.print('📊 System Health', 'header');
// Tool latency table (sorted by avg desc)
this.terminal.print('── Tool Latency ──', 'info');
const sorted = Object.entries(toolStats)
.map(([name, s]) => ({ name, avg: (s.totalMs / s.calls).toFixed(0), ...s }))
.sort((a, b) => b.avg - a.avg);
for (const t of sorted.slice(0, 10)) {
const avgMs = t.avg.padStart(5);
const maxMs = String(t.maxMs).padStart(5);
const err = t.errors > 0 ? ` ⚠️${t.errors}` : '';
this.terminal.print(` ${avgMs}ms avg / ${maxMs}ms max — ${t.name} (${t.calls} calls)${err}`, t.errors > 0 ? 'warning' : '');
}
if (sorted.length > 10) this.terminal.print(` ... and ${sorted.length - 10} more tools`, 'info');
// VFS stats
this.terminal.print('── VFS Stats ──', 'info');
try {
const totalSize = this._vfsSize(fs.root);
const fileCount = this._vfsCount(fs.root, 'file');
const dirCount = this._vfsCount(fs.root, 'dir');
this.terminal.print(` ${fileCount} files, ${dirCount} dirs, ${(totalSize / 1024).toFixed(0)} KB total`, '');
} catch (e) { this.terminal.print(' VFS stats unavailable', 'warning'); }
// Module stats
this.terminal.print('── Module Stats ──', 'info');
const mm = this.terminal.moduleManager;
const loaded = Object.keys(mm.modules).length;
const reg = (mm.moduleRegistry || []).length;
this.terminal.print(` ${loaded} modules loaded, ${reg} in registry`, '');
// Memory
this.terminal.print('── Memory ──', 'info');
if (performance.memory) {
const heap = (performance.memory.usedJSHeapSize / 1048576).toFixed(1);
const total = (performance.memory.jsHeapSizeLimit / 1048576).toFixed(0);
this.terminal.print(` ${heap} MB used / ${total} MB limit`, heap > 100 ? 'warning' : '');
} else {
this.terminal.print(' Memory info not available (non-Chrome browser)', '');
}
// Total tool call count
const totalCalls = this._latencyLog.length;
const totalErrors = this._latencyLog.filter(e => e.error).length;
this.terminal.print(` ${totalCalls} tool calls logged, ${totalErrors} errors (${totalCalls > 0 ? (totalErrors / totalCalls * 100).toFixed(1) : 0}% error rate)`, totalErrors > 0 ? 'warning' : '');
}
_vfsSize(node) {
if (!node) return 0;
if (node.type === 'file') return (node.content || '').length;
let s = 0;
for (const k in (node.content || {})) s += this._vfsSize(node.content[k]);
return s;
}
_vfsCount(node, type) {
if (!node) return 0;
let c = 0;
for (const k in (node.content || {})) {
const child = node.content[k];
if (child.type === type) c++;
c += this._vfsCount(child, type);
}
return c;
}
loadServers() {
try {
const saved = localStorage.getItem('webx11_servers');
return saved ? JSON.parse(saved) : [];
} catch (e) { return []; }
}
saveServers() {
localStorage.setItem('webx11_servers', JSON.stringify(this.servers));
}
addServer(args) {
if (args.length < 2) {
this.terminal.print("Usage: server <name> <url>", "warning"); return;
}
const name = args[0], url = args[1];
this.servers.push({ name, url, status: 'unknown', lastCheck: null });
this.saveServers();
this.terminal.print(`Server '${name}' added`, "success");
}
listServers() {
if (this.servers.length === 0) {
this.terminal.print("No servers configured", "info"); return;
}
this.terminal.print("=== Monitored Servers ===", "info");
this.servers.forEach((s, i) => {
const statusIcon = s.status === 'online' ? '🟢' : s.status === 'offline' ? '🔴' : '⚪';
this.terminal.print(`${i + 1}. ${statusIcon} ${s.name} - ${s.url}`);
if (s.lastCheck) { this.terminal.print(` Last check: ${s.lastCheck}`, "info"); }
});
}
async checkServer(args) {
if (!args[0]) {
this.terminal.print("Usage: server-check <name-or-index>", "warning"); return;
}
const server = this.findServer(args[0]);
if (!server) {
this.terminal.print("Server not found", "error"); return;
}
this.terminal.print(`Checking ${server.name}...`, "info");
try {
const start = Date.now();
const response = await fetch(server.url, { method: 'HEAD', mode: 'no-cors' });
const latency = Date.now() - start;
server.status = 'online'; server.lastCheck = new Date().toLocaleString(); server.latency = latency;
this.saveServers();
this.terminal.print(`✅ ${server.name} is online (${latency}ms)`, "success");
} catch (e) {
server.status = 'offline'; server.lastCheck = new Date().toLocaleString();
this.saveServers();
this.terminal.print(`❌ ${server.name} is offline`, "error");
}
}
removeServer(args) {
if (!args[0]) {
this.terminal.print("Usage: server-remove <name-or-index>", "warning"); return;
}
const index = this.findServerIndex(args[0]);
if (index === -1) {
this.terminal.print("Server not found", "error"); return;
}
this.servers.splice(index, 1);
this.saveServers();
this.terminal.print("Server removed", "success");
}
toggleMonitor(args) {
if (this.monitorInterval) {
clearInterval(this.monitorInterval);
this.monitorInterval = null;
this.terminal.print("Auto-monitor stopped", "warning");
} else {
this.terminal.print("Auto-monitor started (every 60s)", "success");
this.monitorInterval = setInterval(() => {
this.servers.forEach((s, i) => { this.checkServer([String(i + 1)]); });
}, 60000);
}
}
findServer(identifier) {
const index = this.findServerIndex(identifier);
return index !== -1 ? this.servers[index] : null;
}
findServerIndex(identifier) {
const idx = parseInt(identifier) - 1;
if (!isNaN(idx) && idx >= 0 && idx < this.servers.length) { return idx; }
return this.servers.findIndex(s => s.name.toLowerCase() === identifier.toLowerCase());
}
}
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