seneca-simple-example.js

// client (client.js)
require('seneca')()

  // a local pattern
  .add('say:hello', function (msg, respond){ respond(null, {text: "Hi!"}); })

  // send any role:math patterns out over the network
  // IMPORTANT: must match listening service
  .client({ type: 'tcp', pin: 'role:math' })

  // executed remotely
  .act('role:math,cmd:sum,left:1,right:2',console.log)

  // executed locally
  .act('say:hello',console.log);

// plugin (math.js)
module.exports = function math(options) {

  this.add('role:math,cmd:sum', function sum(msg, respond) {
    respond(null, { answer: msg.left + msg.right });
  });

  this.add('role:math,cmd:product', function product(msg, respond) {
    respond(null, { answer: msg.left * msg.right });
  });

  this.wrap('role:math', function (msg, respond) {
    msg.left  = Number(msg.left).valueOf();
    msg.right = Number(msg.right).valueOf();
    this.prior(msg, respond);
  });
};

// service (service.js)
require('seneca')()

  .use('math')

  // listen for role:math messages
  // IMPORTANT: must match client
  .listen({ type: 'tcp', pin: 'role:math' });