GatewayResponse Interface

1/**
2     * Abstract function to build gateway response for a Transaction
3     * The input is the response from gateway
4     * It creates and returns GatewayResponse from the HttpResponse
5     */
6    public abstract commercepayments.GatewayResponse buildResponse(HttpResponse response);
7
8    /**
9     * Function to process transaction requests
10     * Steps involved are:
11     * 1. Build HttpRequest with the input Request from gateway context
12     * 2. Send request and get the response from gateway
13     * 3. Parse the response from gateway and return GatewayResponse
14     */
15    public commercepayments.GatewayResponse execute(){
16                HttpRequest req;
17        try{
18            //Building a new request
19            req = buildRequest();
20        } catch(PayeezeValidationException e) {
21            return getValidationExceptionError(e);
22        }
23        commercepayments.PaymentsHttp http = new commercepayments.PaymentsHttp();
24        HttpResponse res = null;
25        try{
26            //Sending the request
27            res = http.send(req);
28        } catch(CalloutException ce) {
29            return getCalloutExceptionError(ce);
30        }
31        try{
32            //Parsing the response from gateway
33            return buildResponse(res);
34        } catch(Exception e) {
35            return getParseExceptionError(e);
36        }
37    }