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liza/src/client/ClientDataProxy.js

115 lines
3.4 KiB
JavaScript

/**
* Contains ClientDataProxy 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/>.
*
* @todo This has hard-coded references to the ``quote server'' and LoVullo
*/
var Class = require( 'easejs' ).Class,
JqueryHttpDataProxy = require( './proxy/JqueryHttpDataProxy' );
/**
* Handles additional processing before passing HTTP request off to the
* requester
*/
module.exports = Class( 'ClientDataProxy' )
.extend( JqueryHttpDataProxy,
{
/**
* Log error (if any) and process data before returning the parent's GET
* request
*
* @param {string} url request URL
* @param {function( Object, * }) callback request callback (success or
* failure)
*
* @return {ClientDataProxy} self
*/
'protected override getData': function( url, callback )
{
var _self = this;
this.__super( url, function( data, err )
{
if ( err )
{
console.error( 'XHR GET Error: (%s) %s', url, err );
}
callback( _self._processData( data ), err );
} );
return this;
},
/**
* Log error (if any) and process data before returning the parent's POST
* request
*
* @param {string} url request URL
* @param {Object} data data to post to server
* @param {function( Object, * }) callback request callback (success or
* failure)
*
* @return {ClientDataProxy} self
*/
'protected override postData': function( url, data, callback )
{
var _self = this;
this.__super( url, data, function( data, err )
{
if ( err )
{
console.error( 'XHR POST Error: (%s) %s', url, err );
}
callback( _self._processData( data ), err );
} );
},
/**
* Basic data post-processing
*
* If the response is empty/doesn't make sense, this will generate a
* generic error.
*
* @param {Object} data response data
*
* @return processed data
*/
'private _processData': function( data )
{
// if the data is null, then we didn't actually get a response from the
// server - rather, the response was empty (that's bad!)
data = data || {
hasError: true,
content: 'There was a problem communicating with the quote ' +
'server. If you continue to receive this message, please ' +
'contact RT Specialty / LoVullo for assistance.'
};
return data;
}
} );