index.js

const logger = require('pelias-logger').get('api');
const type_mapping = require('./helper/type_mapping');

const app = require('./app'),
    port = ( process.env.PORT || 3100 ),
    host = ( process.env.HOST || undefined );

let server;

// load Elasticsearch type mappings before starting web server
type_mapping.load(() => {
  server = app.listen( port, host, () => {
    // ask server for the actual address and port its listening on
    const listenAddress = server.address();
    logger.info( `pelias is now running on http://${listenAddress.address}:${listenAddress.port}` );
  });
});

function exitHandler() {
  logger.info('Pelias API shutting down');

  server.close();
}

process.on('SIGINT', exitHandler);
process.on('SIGTERM', exitHandler);