feat: implement Web Worker architecture for efficient data sync
- Add data-sync.worker.js: separate thread for API calls (30s interval) - Add app.js: main thread with DOM update logic and localStorage integration - Update index.html: remove inline scripts, use external app.js - Implement granular DOM updates (only update changed elements) - Add localStorage persistence for health and models data - Add Web Worker fallback for unsupported browsers - Add WEB_WORKERS.md documentation with architecture details Benefits: - Main thread never blocked by network requests - UI stays responsive at 60 FPS - Offline support via localStorage - Efficient DOM updates (no unnecessary re-renders) - Better browser support and performance
This commit is contained in:
Luca Sacchi Ricciardi
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/**
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* LLM Monitor - Main App
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* Gestisce il Web Worker e aggiorna il DOM in modo efficiente
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*/
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class LLMMonitorApp {
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constructor() {
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this.worker = null;
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this.lastData = {
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health: null,
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models: null
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};
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this.init();
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}
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init() {
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// Inizializzare il Web Worker
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if (typeof Worker !== 'undefined') {
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this.worker = new Worker('/static/js/data-sync.worker.js');
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this.worker.onmessage = (event) => this.handleWorkerMessage(event);
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this.worker.onerror = (error) => {
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console.error("Worker error:", error);
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// Fallback: sincronizzazione nel main thread
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this.syncDataInMainThread();
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};
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} else {
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console.warn("Web Workers not supported, using main thread");
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this.syncDataInMainThread();
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}
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// Caricare dati da localStorage
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this.loadFromLocalStorage();
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// Listener al pulsante manuale
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document.getElementById("refresh-btn")?.addEventListener("click", () => {
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this.requestSync();
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});
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}
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// Caricare dati da localStorage
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loadFromLocalStorage() {
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const healthStr = localStorage.getItem("llm_monitor_health");
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const modelsStr = localStorage.getItem("llm_monitor_models");
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if (healthStr) {
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try {
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this.lastData.health = JSON.parse(healthStr);
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this.renderHealth(this.lastData.health);
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} catch (e) {
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console.error("Error parsing health data:", e);
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}
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}
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if (modelsStr) {
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try {
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this.lastData.models = JSON.parse(modelsStr);
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this.renderModels(this.lastData.models);
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} catch (e) {
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console.error("Error parsing models data:", e);
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}
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}
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}
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// Gestire messaggi dal Worker
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handleWorkerMessage(event) {
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const { type, health, modelsData } = event.data;
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if (type === "DATA_UPDATED") {
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if (health && JSON.stringify(this.lastData.health) !== JSON.stringify(health)) {
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this.lastData.health = health;
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this.renderHealth(health);
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}
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if (modelsData && JSON.stringify(this.lastData.models) !== JSON.stringify(modelsData)) {
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this.lastData.models = modelsData;
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this.renderModels(modelsData);
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}
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}
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}
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// Renderizzare Health (aggiornamento granulare)
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renderHealth(health) {
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if (!health) return;
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const ollamaStatus = health.ollama_status;
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const statusEl = document.getElementById("status-indicator");
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const statusText = document.getElementById("status-text");
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const ollamaStatusEl = document.getElementById("ollama-status");
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if (ollamaStatus === "online") {
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// Aggiornare solo se cambiato
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if (!statusEl.classList.contains("bg-green-500")) {
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statusEl.className = "w-3 h-3 bg-green-500 rounded-full";
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statusText.className = "text-sm text-green-400";
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statusText.textContent = "Ollama Online";
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ollamaStatusEl.innerHTML = "🟢 Online";
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}
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} else {
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if (!statusEl.classList.contains("bg-red-500")) {
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statusEl.className = "w-3 h-3 bg-red-500 rounded-full";
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statusText.className = "text-sm text-red-400";
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statusText.textContent = "Ollama Offline";
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ollamaStatusEl.innerHTML = "🔴 Offline";
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}
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}
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}
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// Renderizzare Modelli (aggiornamento granulare)
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renderModels(modelsData) {
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if (!modelsData) return;
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// Aggiornare conteggio
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document.getElementById("models-count").textContent = modelsData.total;
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// Aggiornare spazio totale
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document.getElementById("total-size").textContent = modelsData.totalSize;
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// Aggiornare lista modelli
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const container = document.getElementById("models-container");
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const { models } = modelsData;
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if (models.length === 0) {
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container.innerHTML = `
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<div class="text-center py-8 text-gray-400">
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<p>Nessun modello caricato</p>
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</div>
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`;
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return;
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}
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// Comparare con il rendering precedente (evitare re-render se identico)
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const newHTML = models.map(model => this.renderModelCard(model)).join("");
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// Aggiornare solo se veramente diverso
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if (container.innerHTML !== newHTML) {
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container.innerHTML = newHTML;
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}
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}
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// Renderizzare singola card modello
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renderModelCard(model) {
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const formattedDate = this.formatDate(model.modified_at);
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return `
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<div class="bg-gray-700 rounded-lg p-4 border border-gray-600 hover:border-purple-500 transition">
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<div class="flex items-start justify-between mb-3">
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<h3 class="text-lg font-semibold">${this.escapeHtml(model.name)}</h3>
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<span class="bg-purple-600 px-3 py-1 rounded text-xs font-medium">Caricato</span>
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</div>
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<div class="grid grid-cols-2 gap-4 text-sm">
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<div>
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<p class="text-gray-400">Dimensione</p>
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<p class="font-semibold">${this.formatBytes(model.size)}</p>
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</div>
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<div>
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<p class="text-gray-400">Ultimo aggiornamento</p>
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<p class="font-semibold">${formattedDate}</p>
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</div>
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</div>
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<div class="mt-3">
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<p class="text-gray-400 text-xs">Digest</p>
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<p class="font-mono text-xs bg-gray-800 p-2 rounded mt-1 break-all">${this.escapeHtml(model.digest.substring(0, 64))}...</p>
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</div>
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</div>
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`;
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}
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// Formattare bytes
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formatBytes(bytes) {
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if (bytes === 0) return "0 B";
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const k = 1024;
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const sizes = ["B", "KB", "MB", "GB"];
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const i = Math.floor(Math.log(bytes) / Math.log(k));
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return (bytes / Math.pow(k, i)).toFixed(2) + " " + sizes[i];
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}
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// Formattare data
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formatDate(dateString) {
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const date = new Date(dateString);
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return date.toLocaleDateString("it-IT", {
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year: "numeric",
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month: "short",
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day: "numeric",
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hour: "2-digit",
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minute: "2-digit"
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});
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}
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// Escapare HTML (prevenire XSS)
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escapeHtml(text) {
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const div = document.createElement('div');
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div.textContent = text;
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return div.innerHTML;
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}
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// Chiedere sincronizzazione manuale al Worker
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requestSync() {
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if (this.worker) {
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this.worker.postMessage({ type: "SYNC_NOW" });
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} else {
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this.syncDataInMainThread();
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}
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}
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// Fallback: sincronizzazione nel main thread
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async syncDataInMainThread() {
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try {
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const response = await fetch("/api/v1/health");
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if (response.ok) {
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const health = await response.json();
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this.lastData.health = health;
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localStorage.setItem("llm_monitor_health", JSON.stringify(health));
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this.renderHealth(health);
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}
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} catch (error) {
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console.error("Health check error:", error);
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}
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try {
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const response = await fetch("/api/v1/models");
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if (response.ok) {
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const data = await response.json();
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const models = data.models || [];
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const modelsData = {
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models,
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total: models.length,
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totalSize: this.formatBytes(models.reduce((sum, m) => sum + m.size, 0)),
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timestamp: new Date().toISOString()
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};
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this.lastData.models = modelsData;
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localStorage.setItem("llm_monitor_models", JSON.stringify(modelsData));
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this.renderModels(modelsData);
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}
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} catch (error) {
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console.error("Models loading error:", error);
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}
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}
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}
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// Inizializzare l'app quando il DOM è pronto
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document.addEventListener("DOMContentLoaded", () => {
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window.app = new LLMMonitorApp();
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});
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