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liza/src/dapi/PostRestDataApiStrategy.js

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/**
* Concrete PostRestDataApiStrategy class
*
* Copyright (C) 2017 R-T Specialty, LLC.
*
* This file is part of the Liza Data Collection Framework.
*
* liza is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
var Class = require( 'easejs' ).Class,
RestDataApiStrategy = require( './RestDataApiStrategy' ),
// XXX: decouple (this couples us to the client)!
HttpDataProxy = require( '../client/proxy/HttpDataProxy' );
/**
* Requests data from a RESTful service, POSTing arguments
*/
module.exports = Class( 'PostRestDataApiStrategy' )
.implement( RestDataApiStrategy )
.extend(
{
/**
* Data proxy used to communicate with the service
* @type {HttpDataProxy}
*/
'private _proxy': null,
/**
* Initialize strategy
*
* The strategy is independent of any URL; that is, we should not pass the
* URL here, as the strategy can be re-used for *any* RESTful service.
*
* @param {HttpDataProxy} data_proxy proxy to handle all requests
*/
__construct: function( data_proxy )
{
if ( !( Class.isA( HttpDataProxy, data_proxy ) ) )
{
throw Error(
'Expected HttpDataProxy; given ' + data_proxy
);
}
this._proxy = data_proxy;
},
/**
* Request data from the service
*
* @param {string} url service URL
* @param {Object} data request params
* @param {function(Object)} callback server response callback
*
* @return {RestDataApi} self
*/
'public requestData': function( url, data, callback )
{
this._proxy.post( url, data, function( retdata )
{
callback( retdata );
} );
return this;
}
} );