suppress statusDebugMessage when Exception thrown in REST api

[SingingBush]

if an exception is thrown in the rest interface the following Json is returned:

{
    "statusMessage": "An error message, hopefully useful",
    "statusDebugMessage": "bloomin 0x0000000104c2a8c0 big stacktrace of 0x0000000104cc8a3c const(bool function(immutable(char)[], scope bool delegate(ulong, scope immutable(char)[][]))) vibe.http.router.MatchTree!(vibe.http.router.Route).MatchTree.doMatch + 272\n18 meaningless drivel 0xffffffffffffffff 0x0 + 18446744073709551615"
}

at times I've managed to get something useful from statusDebugMessage but not often. It would be handy to silence it, especially if doing a release build.

So in /vibe/web/rest.d#L1141-L1144 where it has:

res.writeJsonBody(
    [ "statusMessage": e.msg, "statusDebugMessage": sanitizeUTF8(cast(ubyte[])e.toString()) ], 
    HTTPStatus.internalServerError
    );

How about doing:

debug {
    res.writeJsonBody(
        [ "statusMessage": e.msg, "statusDebugMessage": sanitizeUTF8(cast(ubyte[])e.toString()) ], 
        HTTPStatus.internalServerError
        );
} else {
    res.writeJsonBody(
        [ "statusMessage": e.msg ], 
        HTTPStatus.internalServerError
        );
}

[s-ludwig]

Sounds reasonable. I would possibly have preferred testing HTTPServerSettings.options & HTTPServerOption.errorStackTraces instead, but the REST interface generator doesn't have access to that as it stands. It could still make sense to make this a runtime setting in RestInterfaceSettings, though, if there is a need.