resolve-local-rpc/es/create-server.js

The reSolve framework's rpc client/server on a local machine.

import http from 'http';
import https from 'https';
import { URL } from 'url';
export async function mainHandler(hostObject, request, response) {
  try {
    await new Promise((resolve, reject) => {
      let chunks = [];
      request.on('data', chunk => {
        chunks.push(chunk);
      }).on('end', () => {
        request.body = Buffer.concat(chunks);
        chunks = null;
        resolve();
      }).on('error', error => {
        reject(error);
      });
    });
    request.hostObject = hostObject;

    switch (request.method) {
      case 'POST':
        {
          const {
            method,
            args
          } = JSON.parse(request.body);
          const callback = request.hostObject[method];

          if (callback == null) {
            response.statusCode = 422;
            response.end(`Unsupported method = ${method}`);
            return;
          }

          let result = await callback(...args);

          if (result == null) {
            result = null;
          }

          response.statusCode = 200;
          response.end(JSON.stringify(result, null, 2));
          break;
        }

      default:
        {
          response.statusCode = 422;
          response.end();
        }
    }
  } catch (error) {
    response.statusCode = !isNaN(+error.code) ? +error.code : 500;
    response.end(JSON.stringify({
      name: error.name,
      code: error.code,
      message: error.message,
      stack: error.stack
    }, null, 2));
  }
}

const createServer = async ({
  address,
  hostObject
}) => {
  const parsedUrl = new URL(address);
  const [serverFactory, defaultPort] = parsedUrl.protocol === 'https:' ? [https, 443] : parsedUrl.protocol === 'http:' ? [http, 80] : null;
  const port = parsedUrl.port != null ? parsedUrl.port : defaultPort;

  if (serverFactory == null) {
    throw new Error(`Invalid protocol ${parsedUrl.protocol}`);
  }

  const server = serverFactory.createServer(mainHandler.bind(null, hostObject));
  server.listen(port);
  return () => {
    const serverClosePromise = new Promise((resolve, reject) => {
      server.close(error => error == null ? resolve() : reject(error));
    });
    let hostObjectDisposePromise = Promise.resolve();

    if (typeof hostObject.dispose === 'function') {
      hostObjectDisposePromise = hostObject.dispose();
    }

    return Promise.all([serverClosePromise, hostObjectDisposePromise]);
  };
};

export default createServer;
//# sourceMappingURL=create-server.js.map