dl/lib/opal/OpalRequest.js

DreamLab Libs

var Class = require("core").Class;
var Request = require("core").http.Request;
var JsonRpcRequest = require("core").jsonrpc.JsonRpcRequest;
var BinaryData = require("core").data.BinaryData;

/**
 * @class OpalRequest
 * @extends UrlRequest
 * @requires Class
 * @requires UrlRequest
 *
 */
var OpalRequest = function () {

    /** @ignore */
    this.Extends = Request;

    /**
     * @private
     * @property {String} _remoteMethod
     */
    //this._remoteMethod = null;

    /** @ignore */
    this.initialize = function (data) {
        this.parent();

        this._remoteMethod = null;

        if (data) {
            if (data.hasOwnProperty('url') && data.hasOwnProperty('params') && data.hasOwnProperty('method')) {
                this._singleRequest(data);
            }
            else if(data.hasOwnProperty('url')) {
                this._batchRequest(data);
            }
            else {
                throw OpalRequest.Exception.INCOMPLETE_PARAMS;
            }
        }
    };
    this._setConnection = function(data){
        if (data.url.substring(0, 8) == 'https://') {
            this.setPort(443);
            this.setHeader('host', data.url.replace('https://', '').replace('/', ''));
        } else {
            this.setPort(80);
            this.setHeader('host', data.url.replace('http://', '').replace('/', ''));
        }

        if (process.env['OPAL_LOCATION']) {
            this.setConnectionHost(process.env['OPAL_LOCATION']);
        } else {
            this.setConnectionHost(data.url);
        }

            this.setRemoteMethod(data.method);
            this.setMethod(Request.POST);

            if (data.hasOwnProperty('application')) {
                this.setApplication(data.application);
            } else if (process.env['OPAL_IDENTITY']) {
                this.setApplication(process.env['OPAL_IDENTITY']);
            } else {
                this.setApplication('localhost.front.onetapi.pl');
            }

    };

    this._batchRequest = function (data) {
        this._setConnection(data);
        this.setMethod(Request.POST);
    };
    this.setBatchBody = function (data) {
        var bdata = new BinaryData(data.toString(), BinaryData.Encoding.TEXT, BinaryData.CharacterEncoding.UTF8);
        this.setBody(bdata);

    };
    this._singleRequest = function (data) {
        this._setConnection(data);
        this.setRemoteMethod(data.method);
        this.setMethod(Request.POST);

        var odata = new JsonRpcRequest({
            'id': this.getRemoteMethod() + '-' + +new Date(),
            'method': this.getRemoteMethod(),
            'params': data.params
        }).toString();
        var bData = new BinaryData(odata, BinaryData.Encoding.TEXT, BinaryData.CharacterEncoding.UTF8);


        this.setBody(bData);

        this.setHeader('content-type', 'application/json-rpc');
        this.setHeader('content-length', bData.length());
    };


    /**
     * sets the application ident string
     * @param {String} app
     * @returns {OpalRequest}
     */
    this.setApplication = function (app) {
        this.setHeader('x-onet-app', app, true);

        return this;
    };

    /**
     * returns application ident string
     * @returns {OpalRequest}
     */
    this.getApplication = function () {
        return this.getHeader('x-onet-app');
    };

    /**
     * sets method of communicating with a service
     * @param {String} method
     * @returns {OpalRequest}
     */
    this.setRemoteMethod = function (method) {
        this._remoteMethod = method;

        return this;
    };

    /**
     * returns method of communicating with a service
     *
     * @returns {OpalRequest}
     */
    this.getRemoteMethod = function () {
        return this._remoteMethod;
    };
};

OpalRequest = new Class(new OpalRequest());

OpalRequest.Exception = {};
OpalRequest.Exception.INCOMPLETE_PARAMS = 'Incomplete params given';

exports.OpalRequest = OpalRequest;