@confluentinc/ksqldb-graphql/src/requester.ts

graphql utilities for ksqldb

import { request, RequestOptions } from 'http';
import { KsqlDBRest } from './type/definition';

export const generateOptions = (options, data) => ({
  ...options,
  method: 'POST',
  path: '/ksql',
  headers: {
    'Content-Type': 'application/json',
    ...options.headers,
    'Content-Length': data.length
  }
});

export const runCommand = (ksqlCommand: string, options: RequestOptions): Promise<KsqlDBRest> => {
  return new Promise(resolve => {
    const data = JSON.stringify({ ksql: ksqlCommand });
    let result = '';
    const requestData = {
      statusCode: 0
    };
    const opts = generateOptions(options, data);
    const req = request(opts, res => {
      requestData.statusCode = res.statusCode;
      res.on('data', d => {
        result += Buffer.from(d).toString();
      })
    });
    req.on('close', () => {
      try {
        resolve({ ...requestData, data: JSON.parse(result) });
      } catch (e) {
        console.log(e, result);
        resolve(e);
      }
    })
    req.on('error', error => {
      console.error(error)
    })
    req.write(data);
    req.end();
  });
}