@arisan/data-api/lib/handlers/base-handler.js

The Universal Database API Gateway for CLIO's Modules

'use strict'; // eslint-disable-line strict

const ipaddr = require('ipaddr.js');

const isWithinValidPublicIpRange = require('../Utils').isWithinValidPublicIpRange;

class BaseHandler {
  constructor(logger) {
    this.logger = logger;
  }

  checkValidPublicIp(ip, res, tag) {
    if (!ip) {
      this.handleError(res, 400, `${ tag }No Public IP`);
      return false;
    }
    if (!ipaddr.isValid(ip)) {
      this.handleError(res, 400, `${ tag }Malformed Public IP ${ ip }`);
      return false;
    }
    if (!isWithinValidPublicIpRange(ip)) {
      this.handleError(res, 400, `${ tag }Public IP in Invalid Range ${ ip }`);
      return false;
    }
    return true;
  }

  checkValidPort(port, res, tag) {
    if (!port) {
      this.handleError(res, 400, `${ tag }No Port`);
      return false;
    }
    if (port < 1 || port > 65535) {
      this.handleError(res, 400, `${ tag }Port in Invalid Range ${ port }`);
      return false;
    }
    return true;
  }

  checkValidProjectId(id, res, tag) {
    if (!id) {
      this.handleError(res, 400, `${ tag }No Project ID`);
      return false;
    }
    return true;
  }

  checkValidPublicAddress(address, res, tag) {
    if (!address) {
      this.handleError(res, 400, `${ tag }No Public Address`);
      return false;
    }
    return true;
  }

  checkValidWebPort(port, res, tag) {
    if (!port) {
      this.handleError(res, 400, `${ tag }No Web Port`);
      return false;
    }
    if (port < 1 || port > 65535) {
      this.handleError(res, 400, `${ tag }Web Port in Invalid Range ${ port }`);
      return false;
    }
    return true;
  }

  checkRequestBodyProperties(reqBody, res, tag, id, ...args) {
    if (!reqBody) {
      return false;
    }
    for (let i = 0; i < args.length; i++) {
      if (!{}.hasOwnProperty.call(reqBody, args[i])) {
        this.handleError(res, 400, `${ tag }ID ${ id } Request Body Contains No ${ args[i] }`);
        return false;
      }
    }
    return true;
  }

  info(message) {
    this.logger.info(message);
  }

  debug(message) {
    this.logger.debug(message);
  }

  error(message) {
    this.logger.error(message);
  }

  handleError(res, httpStatusCode, message) {
    if (message) {
      this.logger.error(message);
      res.status(httpStatusCode).send(message);
    } else {
      res.sendStatus(httpStatusCode);
    }
  }
}

module.exports = BaseHandler;
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