[SalesForce] REST Resource class not working

I have a service that returns JSON for .json and XML for .xml or no extension.

I notice that your URL mapping is:

urlMapping='/v2/services/*'

which I assume will not match either of these (try them):

[API endpoint]/services.json
[API endpoint]/services.xml

but would match either of these:

[API endpoint]/services/[service_code].json
[API endpoint]/services/[service_code].xml

Perhaps you need to introduce a "none" or "unknown" dummy service code or use the rather ugly:

[API endpoint]/services/.json
[API endpoint]/services/.xml

PS

On the status code question, this is what I have done in a couple of places:

@HttpGet
global static void get() {
    RestResponse res = RestContext.response;
    if (res == null) {
        res = new RestResponse();
        RestContext.response = res;
    }
    try {
        res.statusCode = 200;
        res.responseBody = Blob.valueOf(readConfiguration());
    } catch (EndUserMessageException e) {
        res.statusCode = 400;
        res.responseBody = Blob.valueOf(e.getMessage());
    } catch (Exception e) {
        res.statusCode = 500;
        res.responseBody = Blob.valueOf('SERVER ERROR\n\n' + String.valueOf(e) + '\n\n' + e.getStackTraceString());
    }
}

Created a simple test with the following code:

@RestResource(urlMapping='/testRest/*')
global with sharing class TestRest {

@HttpGet
global static List<sObject> doGet() {
    RestRequest req = RestContext.request;
    RestResponse res = RestContext.response;
    List<sObject> result = [SELECT id, ownerId, name from report];
    return result;
  }

}

Ran the curl command

curl https://na16.salesforce.com/services/apexrest/testRest -H 'Authorization: Bearer xxxxxxx' -H 'Accept-Encoding: gzip' -v > performance_with_gz ; cat performance_with_gz

Where xxxxxx is the token (see resources on how to get it) and the result headers were: < HTTP/1.1 200 OK < Date: Thu, 16 Apr 2015 21:23:41 GMT < Set-Cookie: BrowserId=vOR1P_eXQxSIXNSlB05oxA;Path=/; Domain=.salesforce.com;Expires=Mon, 15-Jun-2015 21:23:41 GMT < Expires: Thu, 01 Jan 1970 00:00:00 GMT < Content-Type: application/json;charset=UTF-8 < Content-Encoding: gzip < Transfer-Encoding: chunked

and the content was indeed gzip encoded.

So Salesforce does indeed gzip compress custom REST APIs and it looks like the issue is on our side.

Resources:

http://www.oyecode.com/2014/07/try-any-salesforce-api-quickly-with.html http://www.oyecode.com/2014/08/start-building-your-own-rest-api-in.html https://www.salesforce.com/us/developer/docs/apexcode/Content/apex_rest_code_sample_basic.htm