feat: auto-discovery
This commit is contained in:
102
test/demo-frontend.js
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102
test/demo-frontend.js
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#!/usr/bin/env node
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/**
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* Demo script for Frontend Discovery Integration
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* Shows how the frontend displays primary node information
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*/
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const http = require('http');
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const BASE_URL = 'http://localhost:3001';
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function makeRequest(path, method = 'GET') {
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return new Promise((resolve, reject) => {
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const options = {
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hostname: 'localhost',
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port: 3001,
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path: path,
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method: method,
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headers: {
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'Content-Type': 'application/json'
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}
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};
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const req = http.request(options, (res) => {
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let data = '';
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res.on('data', (chunk) => {
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data += chunk;
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});
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res.on('end', () => {
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try {
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const jsonData = JSON.parse(data);
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resolve({ status: res.statusCode, data: jsonData });
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} catch (error) {
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resolve({ status: res.statusCode, data: data });
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}
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});
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});
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req.on('error', (error) => {
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reject(error);
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});
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req.end();
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});
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}
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async function showFrontendIntegration() {
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console.log('🚀 Frontend Discovery Integration Demo');
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console.log('=====================================');
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console.log('This demo shows how the frontend displays primary node information.');
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console.log('Open http://localhost:3001 in your browser to see the UI.');
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console.log('');
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try {
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// Check if backend is running
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const healthResponse = await makeRequest('/api/health');
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console.log('✅ Backend is running');
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// Get discovery information
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const discoveryResponse = await makeRequest('/api/discovery/nodes');
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console.log('\n📡 Discovery Status:');
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console.log(` Primary Node: ${discoveryResponse.data.primaryNode || 'None'}`);
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console.log(` Total Nodes: ${discoveryResponse.data.totalNodes}`);
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console.log(` Client Initialized: ${discoveryResponse.data.clientInitialized}`);
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if (discoveryResponse.data.nodes.length > 0) {
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console.log('\n🌐 Discovered Nodes:');
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discoveryResponse.data.nodes.forEach((node, index) => {
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console.log(` ${index + 1}. ${node.ip}:${node.port} (${node.isPrimary ? 'PRIMARY' : 'secondary'})`);
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console.log(` Last Seen: ${node.lastSeen}`);
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});
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}
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console.log('\n🎯 Frontend Display:');
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console.log(' The frontend will show:');
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if (discoveryResponse.data.primaryNode) {
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const status = discoveryResponse.data.clientInitialized ? '✅' : '⚠️';
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const nodeCount = discoveryResponse.data.totalNodes > 1 ? ` (${discoveryResponse.data.totalNodes} nodes)` : '';
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console.log(` ${status} ${discoveryResponse.data.primaryNode}${nodeCount}`);
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} else if (discoveryResponse.data.totalNodes > 0) {
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const firstNode = discoveryResponse.data.nodes[0];
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console.log(` ⚠️ ${firstNode.ip} (No Primary)`);
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} else {
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console.log(' 🔍 No Nodes Found');
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}
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console.log('\n💡 To test the frontend:');
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console.log(' 1. Open http://localhost:3001 in your browser');
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console.log(' 2. Look at the cluster header for primary node info');
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console.log(' 3. Send discovery messages: npm run test-discovery broadcast');
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console.log(' 4. Watch the primary node display update in real-time');
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} catch (error) {
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console.error('❌ Error:', error.message);
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console.log('\n💡 Make sure the backend is running: npm start');
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}
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}
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// Run the demo
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showFrontendIntegration().catch(console.error);
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137
test/test-random-selection.js
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137
test/test-random-selection.js
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@@ -0,0 +1,137 @@
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#!/usr/bin/env node
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/**
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* Test script for Random Primary Node Selection
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* Demonstrates how the random selection works
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*/
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const http = require('http');
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const BASE_URL = 'http://localhost:3001';
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function makeRequest(path, method = 'POST', body = null) {
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return new Promise((resolve, reject) => {
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const options = {
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hostname: 'localhost',
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port: 3001,
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path: path,
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method: method,
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headers: {
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'Content-Type': 'application/json'
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}
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};
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const req = http.request(options, (res) => {
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let data = '';
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res.on('data', (chunk) => {
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data += chunk;
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});
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res.on('end', () => {
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try {
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const jsonData = JSON.parse(data);
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resolve({ status: res.statusCode, data: jsonData });
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} catch (error) {
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resolve({ status: res.statusCode, data: data });
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}
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});
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});
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req.on('error', (error) => {
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reject(error);
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});
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if (body) {
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req.write(JSON.stringify(body));
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}
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req.end();
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});
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}
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async function testRandomSelection() {
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console.log('🎲 Testing Random Primary Node Selection');
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console.log('======================================');
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console.log('');
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try {
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// First, check current discovery status
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console.log('1. Checking current discovery status...');
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const discoveryResponse = await makeRequest('/api/discovery/nodes', 'GET');
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if (discoveryResponse.status !== 200) {
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console.log('❌ Failed to get discovery status');
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return;
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}
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const discovery = discoveryResponse.data;
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console.log(` Current Primary: ${discovery.primaryNode || 'None'}`);
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console.log(` Total Nodes: ${discovery.totalNodes}`);
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console.log(` Client Initialized: ${discovery.clientInitialized}`);
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if (discovery.nodes.length === 0) {
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console.log('\n💡 No nodes discovered yet. Send some discovery messages first:');
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console.log(' npm run test-discovery broadcast');
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return;
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}
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console.log('\n2. Testing random primary node selection...');
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// Store current primary for comparison
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const currentPrimary = discovery.primaryNode;
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const availableNodes = discovery.nodes.map(n => n.ip);
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console.log(` Available nodes: ${availableNodes.join(', ')}`);
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console.log(` Current primary: ${currentPrimary}`);
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// Perform random selection
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const randomResponse = await makeRequest('/api/discovery/random-primary', 'POST', {
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timestamp: new Date().toISOString()
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});
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if (randomResponse.status === 200) {
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const result = randomResponse.data;
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console.log('\n✅ Random selection successful!');
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console.log(` New Primary: ${result.primaryNode}`);
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console.log(` Previous Primary: ${currentPrimary}`);
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console.log(` Message: ${result.message}`);
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console.log(` Total Nodes: ${result.totalNodes}`);
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console.log(` Client Initialized: ${result.clientInitialized}`);
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// Verify the change
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if (result.primaryNode !== currentPrimary) {
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console.log('\n🎯 Primary node successfully changed!');
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} else {
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console.log('\n⚠️ Primary node remained the same (only one node available)');
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}
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} else {
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console.log('\n❌ Random selection failed:');
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console.log(` Status: ${randomResponse.status}`);
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console.log(` Error: ${randomResponse.data.error || 'Unknown error'}`);
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}
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// Show updated status
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console.log('\n3. Checking updated discovery status...');
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const updatedResponse = await makeRequest('/api/discovery/nodes', 'GET');
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if (updatedResponse.status === 200) {
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const updated = updatedResponse.data;
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console.log(` Current Primary: ${updated.primaryNode}`);
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console.log(` Client Base URL: ${updated.clientBaseUrl}`);
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}
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console.log('\n💡 To test in the frontend:');
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console.log(' 1. Open http://localhost:3001 in your browser');
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console.log(' 2. Look at the cluster header for primary node info');
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console.log(' 3. Click the 🎲 button to randomly select a new primary node');
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console.log(' 4. Watch the display change in real-time');
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} catch (error) {
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console.error('\n❌ Test failed:', error.message);
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console.log('\n💡 Make sure the backend is running: npm start');
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}
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}
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// Run the test
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testRandomSelection().catch(console.error);
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