@sap/xsodata/lib/http/simpleHttpResponse.js

Expose data from a HANA database as OData V2 service with help of .xsodata files.

'use strict';

const _ = require('lodash');
const http = require('http');

module.exports.createResponse = function () {
    return new SimpleResponse();
};

function SimpleResponse() {
    this.statusCode = null;
    this.headers = {};
    this.data = '';
}

SimpleResponse.prototype._isBatchCRLFEnabled = function () {
    return (
        typeof process !== 'undefined' &&
        process.env &&
        process.env.XSODATA_ENABLE_BATCH_CRLF === 'true'
    );
};

SimpleResponse.prototype.writeHead = function (code, headers) {
    this.statusCode = code;
    _.assign(this.headers, headers);
};

SimpleResponse.prototype.setHeader = function (name, value) {
    this.headers[name] = value;
};

SimpleResponse.prototype.status = function (code) {
    this.statusCode = code;
    return this;
};

SimpleResponse.prototype.write = function (data) {
    this.data += data;
    return this;
};

SimpleResponse.prototype.end = function () {};

SimpleResponse.prototype.writeToBatchResponse = function (response, contentId) {
    let value;
    const headers = this.headers;
    response.write(
        'HTTP/1.1 ' +
            this.statusCode +
            ' ' +
            http.STATUS_CODES['' + this.statusCode] +
            '\r\n'
    );

    Object.keys(headers).forEach(function (key) {
        value = headers[key];
        response.write(key + ': ' + value + '\r\n');
    });
    if (contentId) {
        response.write('Content-ID: ' + contentId.id + '\r\n');
    }
    response.write('\r\n'); // end of header
    response.write(this.data);
    if (this._isBatchCRLFEnabled() && this.data.length > 0) {
        response.write('\r\n'); //as used in OData_Specification_V2.0 batch samples
    }
};