feat(dees-chart-log): Enhance log component with realistic log simulation and improved UI controls
This commit is contained in:
Juergen Kunz
@ -1,6 +1,123 @@
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import { html } from '@design.estate/dees-element';
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export const demoFunc = () => {
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let intervalId: number;
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const serverSources = ['Server', 'Database', 'API', 'Auth', 'Cache', 'Queue', 'WebSocket', 'Scheduler'];
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const logTemplates = {
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debug: [
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'Loading module: {{module}}',
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'Cache hit for key: {{key}}',
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'SQL query executed in {{time}}ms',
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'Request headers: {{headers}}',
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'Environment variable loaded: {{var}}',
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],
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info: [
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'Request received: {{method}} {{path}}',
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'User {{userId}} authenticated successfully',
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'Processing job {{jobId}} from queue',
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'Scheduled task "{{task}}" started',
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'WebSocket connection established from {{ip}}',
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],
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warn: [
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'Slow query detected: {{query}} ({{time}}ms)',
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'Memory usage at {{percent}}%',
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'Rate limit approaching for IP {{ip}}',
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'Deprecated API endpoint called: {{endpoint}}',
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'Certificate expires in {{days}} days',
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],
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error: [
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'Database connection lost: {{error}}',
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'Failed to process request: {{error}}',
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'Authentication failed for user {{user}}',
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'File not found: {{path}}',
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'Service unavailable: {{service}}',
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],
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success: [
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'Server started successfully on port {{port}}',
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'Database migration completed',
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'Backup completed: {{size}} MB',
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'SSL certificate renewed',
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'Health check passed: all systems operational',
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],
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};
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const generateRandomLog = () => {
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const logElement = (window as any).__demoLogElement;
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if (!logElement) {
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console.warn('Log element not ready yet');
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return;
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}
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const levels: Array<'debug' | 'info' | 'warn' | 'error' | 'success'> = ['debug', 'info', 'warn', 'error', 'success'];
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const weights = [0.2, 0.5, 0.15, 0.1, 0.05]; // Weighted probability
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const random = Math.random();
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let cumulative = 0;
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let level: typeof levels[0] = 'info';
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for (let i = 0; i < weights.length; i++) {
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cumulative += weights[i];
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if (random < cumulative) {
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level = levels[i];
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break;
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}
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}
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const source = serverSources[Math.floor(Math.random() * serverSources.length)];
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const templates = logTemplates[level];
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const template = templates[Math.floor(Math.random() * templates.length)];
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// Replace placeholders with random values
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const message = template
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.replace('{{module}}', ['express', 'mongoose', 'redis', 'socket.io'][Math.floor(Math.random() * 4)])
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.replace('{{key}}', 'user:' + Math.floor(Math.random() * 1000))
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.replace('{{time}}', String(Math.floor(Math.random() * 500) + 50))
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.replace('{{headers}}', 'Content-Type: application/json, Authorization: Bearer ...')
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.replace('{{var}}', ['NODE_ENV', 'DATABASE_URL', 'API_KEY', 'PORT'][Math.floor(Math.random() * 4)])
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.replace('{{method}}', ['GET', 'POST', 'PUT', 'DELETE'][Math.floor(Math.random() * 4)])
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.replace('{{path}}', ['/api/users', '/api/auth/login', '/api/products', '/health'][Math.floor(Math.random() * 4)])
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.replace('{{userId}}', String(Math.floor(Math.random() * 10000)))
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.replace('{{jobId}}', 'job_' + Math.random().toString(36).substring(2, 11))
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.replace('{{task}}', ['cleanup', 'backup', 'report-generation', 'cache-refresh'][Math.floor(Math.random() * 4)])
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.replace('{{ip}}', `192.168.1.${Math.floor(Math.random() * 255)}`)
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.replace('{{query}}', 'SELECT * FROM users WHERE ...')
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.replace('{{percent}}', String(Math.floor(Math.random() * 30) + 70))
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.replace('{{endpoint}}', '/api/v1/legacy')
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.replace('{{days}}', String(Math.floor(Math.random() * 30) + 1))
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.replace('{{error}}', ['ECONNREFUSED', 'ETIMEDOUT', 'ENOTFOUND'][Math.floor(Math.random() * 3)])
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.replace('{{user}}', 'user_' + Math.floor(Math.random() * 1000))
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.replace('{{service}}', ['Redis', 'MongoDB', 'ElasticSearch'][Math.floor(Math.random() * 3)])
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.replace('{{port}}', String(3000 + Math.floor(Math.random() * 10)))
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.replace('{{size}}', String(Math.floor(Math.random() * 500) + 100));
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logElement.addLog(level, message, source);
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};
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const startSimulation = () => {
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if (!intervalId) {
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// Generate logs at random intervals between 500ms and 2500ms
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const scheduleNext = () => {
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generateRandomLog();
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const nextDelay = Math.random() * 2000 + 500;
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intervalId = window.setTimeout(() => {
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if (intervalId) {
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scheduleNext();
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}
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}, nextDelay);
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};
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scheduleNext();
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}
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};
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const stopSimulation = () => {
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if (intervalId) {
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window.clearTimeout(intervalId);
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intervalId = null;
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}
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};
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return html`
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<style>
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.demoBox {
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@ -9,11 +126,31 @@ export const demoFunc = () => {
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height: 100%;
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width: 100%;
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padding: 40px;
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box-sizing: border-box;
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display: flex;
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flex-direction: column;
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gap: 20px;
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}
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.controls {
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display: flex;
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gap: 10px;
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flex-wrap: wrap;
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}
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.info {
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color: #888;
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font-size: 12px;
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font-family: 'Geist Sans', sans-serif;
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}
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</style>
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<div class="demoBox">
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<div class="controls">
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<dees-button @clicked=${() => generateRandomLog()}>Add Single Log</dees-button>
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<dees-button @clicked=${() => startSimulation()}>Start Simulation</dees-button>
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<dees-button @clicked=${() => stopSimulation()}>Stop Simulation</dees-button>
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</div>
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<div class="info">Simulating realistic server logs with various levels and sources</div>
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<dees-chart-log
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.label=${'Event Log'}
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.label=${'Production Server Logs'}
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></dees-chart-log>
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</div>
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`;
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@ -13,7 +13,6 @@ import {
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import * as domtools from '@design.estate/dees-domtools';
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import { demoFunc } from './dees-chart-log.demo.js';
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import ApexCharts from 'apexcharts';
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declare global {
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interface HTMLElementTagNameMap {
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@ -21,69 +20,308 @@ declare global {
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}
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}
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export interface ILogEntry {
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timestamp: string;
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level: 'debug' | 'info' | 'warn' | 'error' | 'success';
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message: string;
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source?: string;
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}
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@customElement('dees-chart-log')
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export class DeesChartLog extends DeesElement {
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public static demo = demoFunc;
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// instance
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@state()
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public chart: ApexCharts;
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@property()
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public label: string = 'Untitled Chart';
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public label: string = 'Server Logs';
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@property({ type: Array })
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public logEntries: ILogEntry[] = [];
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@property({ type: Boolean })
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public autoScroll: boolean = true;
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@property({ type: Number })
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public maxEntries: number = 1000;
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private logContainer: HTMLDivElement;
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constructor() {
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super();
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domtools.elementBasic.setup();
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}
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public static styles = [
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cssManager.defaultStyles,
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css`
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:host {
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font-family: 'Geist Sans', sans-serif;
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font-family: 'Geist Mono', 'Consolas', 'Monaco', monospace;
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color: #ccc;
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font-weight: 600;
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font-size: 12px;
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line-height: 1.4;
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}
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.mainbox {
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position: relative;
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width: 100%;
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height: 400px;
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background: #222;
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background: ${cssManager.bdTheme('#f8f9fa', '#0a0a0a')};
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border: 1px solid ${cssManager.bdTheme('#dee2e6', '#333')};
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border-radius: 8px;
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padding: 32px 16px 16px 0px;
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display: flex;
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flex-direction: column;
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overflow: hidden;
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}
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.chartTitle {
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position: absolute;
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top: 0;
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left: 0;
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width: 100%;
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text-align: center;
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padding-top: 16px;
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.header {
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background: ${cssManager.bdTheme('#e9ecef', '#1a1a1a')};
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padding: 8px 16px;
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border-bottom: 1px solid ${cssManager.bdTheme('#dee2e6', '#333')};
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display: flex;
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justify-content: space-between;
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align-items: center;
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flex-shrink: 0;
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}
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.chartContainer {
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position: relative;
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width: 100%;
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.title {
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font-weight: 600;
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color: ${cssManager.bdTheme('#212529', '#fff')};
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}
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.controls {
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display: flex;
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gap: 8px;
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}
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.control-button {
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background: ${cssManager.bdTheme('#e9ecef', '#2a2a2a')};
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border: 1px solid ${cssManager.bdTheme('#ced4da', '#444')};
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border-radius: 4px;
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padding: 4px 8px;
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color: ${cssManager.bdTheme('#495057', '#ccc')};
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cursor: pointer;
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font-size: 11px;
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transition: all 0.2s;
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}
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.control-button:hover {
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background: ${cssManager.bdTheme('#dee2e6', '#3a3a3a')};
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border-color: ${cssManager.bdTheme('#adb5bd', '#555')};
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}
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.control-button.active {
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background: ${cssManager.bdTheme('#007bff', '#4a4a4a')};
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color: ${cssManager.bdTheme('#fff', '#fff')};
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}
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.logContainer {
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flex: 1;
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overflow-y: auto;
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overflow-x: hidden;
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padding: 8px 16px;
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font-size: 12px;
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}
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.logEntry {
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margin-bottom: 2px;
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display: flex;
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white-space: pre-wrap;
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word-break: break-all;
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}
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.timestamp {
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color: ${cssManager.bdTheme('#6c757d', '#666')};
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margin-right: 8px;
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flex-shrink: 0;
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}
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.level {
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margin-right: 8px;
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padding: 0 6px;
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border-radius: 3px;
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font-weight: 600;
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text-transform: uppercase;
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font-size: 10px;
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flex-shrink: 0;
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}
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.level.debug {
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color: ${cssManager.bdTheme('#6c757d', '#999')};
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background: ${cssManager.bdTheme('rgba(108, 117, 125, 0.1)', '#333')};
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}
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.level.info {
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color: ${cssManager.bdTheme('#0066cc', '#4a9eff')};
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background: ${cssManager.bdTheme('rgba(0, 102, 204, 0.1)', 'rgba(74, 158, 255, 0.1)')};
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}
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.level.warn {
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color: ${cssManager.bdTheme('#ff8800', '#ffb84a')};
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background: ${cssManager.bdTheme('rgba(255, 136, 0, 0.1)', 'rgba(255, 184, 74, 0.1)')};
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}
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.level.error {
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color: ${cssManager.bdTheme('#dc3545', '#ff4a4a')};
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background: ${cssManager.bdTheme('rgba(220, 53, 69, 0.1)', 'rgba(255, 74, 74, 0.1)')};
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}
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.level.success {
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color: ${cssManager.bdTheme('#28a745', '#4aff88')};
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background: ${cssManager.bdTheme('rgba(40, 167, 69, 0.1)', 'rgba(74, 255, 136, 0.1)')};
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}
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.source {
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color: ${cssManager.bdTheme('#6c757d', '#888')};
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margin-right: 8px;
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flex-shrink: 0;
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}
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.message {
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color: ${cssManager.bdTheme('#212529', '#ddd')};
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flex: 1;
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}
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.empty-state {
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display: flex;
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align-items: center;
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justify-content: center;
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height: 100%;
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color: ${cssManager.bdTheme('#6c757d', '#666')};
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font-style: italic;
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}
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/* Custom scrollbar */
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.logContainer::-webkit-scrollbar {
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width: 8px;
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}
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.logContainer::-webkit-scrollbar-track {
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background: ${cssManager.bdTheme('#e9ecef', '#1a1a1a')};
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}
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.logContainer::-webkit-scrollbar-thumb {
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background: ${cssManager.bdTheme('#adb5bd', '#444')};
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border-radius: 4px;
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}
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.logContainer::-webkit-scrollbar-thumb:hover {
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background: ${cssManager.bdTheme('#6c757d', '#555')};
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}
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`,
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];
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public render(): TemplateResult {
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return html` <div class="mainbox">
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<div class="chartTitle">${this.label}</div>
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<div class="chartContainer"></div>
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</div> `;
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return html`
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<div class="mainbox">
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<div class="header">
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<div class="title">${this.label}</div>
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<div class="controls">
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<button
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class="control-button ${this.autoScroll ? 'active' : ''}"
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@click=${() => { this.autoScroll = !this.autoScroll; }}
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>
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Auto Scroll
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</button>
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<button
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class="control-button"
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@click=${() => { this.clearLogs(); }}
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>
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Clear
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</button>
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</div>
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</div>
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<div class="logContainer">
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${this.logEntries.length === 0
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? html`<div class="empty-state">No logs to display</div>`
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: this.logEntries.map(entry => this.renderLogEntry(entry))
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}
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</div>
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</div>
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`;
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}
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private renderLogEntry(entry: ILogEntry): TemplateResult {
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const timestamp = new Date(entry.timestamp).toLocaleTimeString('en-US', {
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hour12: false,
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hour: '2-digit',
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minute: '2-digit',
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second: '2-digit',
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fractionalSecondDigits: 3
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});
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return html`
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<div class="logEntry">
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<span class="timestamp">${timestamp}</span>
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<span class="level ${entry.level}">${entry.level}</span>
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${entry.source ? html`<span class="source">[${entry.source}]</span>` : ''}
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<span class="message">${entry.message}</span>
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</div>
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`;
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}
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public async firstUpdated() {
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const domtoolsInstance = await this.domtoolsPromise;
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this.logContainer = this.shadowRoot.querySelector('.logContainer');
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// Initialize with demo server logs
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const demoLogs: ILogEntry[] = [
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{ timestamp: new Date().toISOString(), level: 'info', message: 'Server started on port 3000', source: 'Server' },
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{ timestamp: new Date().toISOString(), level: 'debug', message: 'Loading configuration from /etc/app/config.json', source: 'Config' },
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{ timestamp: new Date().toISOString(), level: 'info', message: 'Connected to MongoDB at mongodb://localhost:27017', source: 'Database' },
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{ timestamp: new Date().toISOString(), level: 'success', message: 'Database connection established successfully', source: 'Database' },
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{ timestamp: new Date().toISOString(), level: 'warn', message: 'No SSL certificate found, using self-signed certificate', source: 'Security' },
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{ timestamp: new Date().toISOString(), level: 'info', message: 'API routes initialized: GET /api/users, POST /api/users, DELETE /api/users/:id', source: 'Router' },
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{ timestamp: new Date().toISOString(), level: 'debug', message: 'Middleware stack: cors, bodyParser, authentication, errorHandler', source: 'Middleware' },
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{ timestamp: new Date().toISOString(), level: 'info', message: 'WebSocket server listening on ws://localhost:3001', source: 'WebSocket' },
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];
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this.logEntries = demoLogs;
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this.scrollToBottom();
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// For demo purposes, store reference globally
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if ((window as any).__demoLogElement === undefined) {
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(window as any).__demoLogElement = this;
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}
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}
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public async updateLog() {
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public async updateLog(entries?: ILogEntry[]) {
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if (entries) {
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// Add new entries
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this.logEntries = [...this.logEntries, ...entries];
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// Trim if exceeds max entries
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if (this.logEntries.length > this.maxEntries) {
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this.logEntries = this.logEntries.slice(-this.maxEntries);
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}
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// Trigger re-render
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this.requestUpdate();
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// Auto-scroll if enabled
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await this.updateComplete;
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if (this.autoScroll) {
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this.scrollToBottom();
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}
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}
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}
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public clearLogs() {
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this.logEntries = [];
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this.requestUpdate();
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}
|
||||
|
||||
private scrollToBottom() {
|
||||
if (this.logContainer) {
|
||||
this.logContainer.scrollTop = this.logContainer.scrollHeight;
|
||||
}
|
||||
}
|
||||
|
||||
public addLog(level: ILogEntry['level'], message: string, source?: string) {
|
||||
const newEntry: ILogEntry = {
|
||||
timestamp: new Date().toISOString(),
|
||||
level,
|
||||
message,
|
||||
source
|
||||
};
|
||||
this.updateLog([newEntry]);
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user