@betit/orion/examples/reqres.js

Pluggable microservice framework

const orion = require('..');

var codecArg = process.argv[2];

if (!codecArg) {
  console.log('Usage: reqres <codec>');
  process.exit();
}

transport = new orion.NatsTransport();

switch (codecArg) {
    case 'msgp':
    case 'msgpack':
        codecArg = 'MessagePack';
        codec = new orion.MsgPackCodec();
        break;
    case 'json':
    default:
        codecArg = 'JSON';
        codec = new orion.JsonCodec();
}

const service = new orion.Service('demo', {
    transport: transport,
    codec: codec
});

const client = new orion.Client({
    service: 'demo',
    transport: transport,
    codec: codec
});

console.log();
console.log('  transport:', 'NATS');
console.log('      codec:', codecArg);

service.handle('time', (req, reply) => {
    reply(null, new Date());
});

service.handle('add', (req, reply) => {
    reply(new Error('too easy'), parseInt(req.params.a) + parseInt(req.params.b));
});

service.listen(() => {
    console.log();
    console.log(`    service: ${service}`);

    client.call('time', (err, res) => {
        console.log();
        console.log('      error:', err);
        console.log('     result:', res);

        client.call('add', { a: 3, b: 2 }, (err, res) => {
            console.log();
            console.log('      error:', err);
            console.log('     result:', res);

            client.close();
            service.close();
        });
    });

});