noflo/examples/http/hello.js

Flow-Based Programming environment for JavaScript

// Flow-based example of serving web pages

// eslint-disable-next-line import/no-unresolved
const noflo = require('noflo');

const graph = noflo.graph.createGraph('blog');

graph.addNode('Web Server', 'HTTP/Server');
graph.addNode('Profiler', 'HTTP/Profiler');
graph.addNode('Authentication', 'HTTP/BasicAuth');
graph.addNode('Read Template', 'ReadFile');
graph.addNode('Greet User', require('./HelloController').getComponent());

graph.addNode('Render', 'Template');
graph.addNode('Write Response', 'HTTP/WriteResponse');
graph.addNode('Send', 'HTTP/SendResponse');

// Main request flow
graph.addInitial(8003, 'Web Server', 'listen');
graph.addEdge('Web Server', 'request', 'Profiler', 'in');
graph.addEdge('Profiler', 'out', 'Authentication', 'in');
graph.addEdge('Authentication', 'out', 'Greet User', 'in');
graph.addEdge('Greet User', 'out', 'Write Response', 'in');
graph.addEdge('Greet User', 'data', 'Render', 'options');
graph.addEdge('Write Response', 'out', 'Send', 'in');

// Templating flow
graph.addInitial(`${__dirname}/hello.jade`, 'Read Template', 'in');
graph.addEdge('Read Template', 'out', 'Render', 'template');
graph.addEdge('Render', 'out', 'Write Response', 'string');

noflo.createNetwork(graph, (err) => {
  if (err) {
    // eslint-disable-next-line no-console
    console.error(err);
    process.exit(1);
  }
});