public static unsafe void Process(HttpContext context, uint accountId)
{
var contentLength = (int)context.Request.ContentLength;
var pctx = new ParseContext(Buffer.My, contentLength);
context.ReadBytes(pctx);
AccountStub stub = UpdatePool.RentStub();
stub.id = accountId;
if (!TryParseAccountUpdate(ref pctx, stub))
{
BadRequest(context, stub);
return;
}
if (!stub.email.IsEmpty)
{
Account account = Database.GetAccount(accountId);
Email previous = account.Email;
Database.Replace(previous, stub.email);
}
UpdateWorker.Update(stub);
context.Response.StatusCode = StatusCodes.Status202Accepted;
context.Response.ContentLength = 2;
context.Response.Body.Write(NewHandler.Empty);
}
public static int TryParseAccount(ref ParseContext ctx, AccountStub stub)
{
const byte quote = (byte)'"';
while (ctx.Length > 0)
{
var propStart = ctx.IndexOf(quote) + 1; //+1 to remove quote
if (propStart < 1)
{
break;
}
ctx.Move(propStart);
var length = ctx.IndexOf(quote); //
ReadOnlySpan <byte> property = ctx.Span.Slice(0, length);
if (!JsonParser.ParseProperty(property, out JsonValueParser parse))
{
return(StatusCodes.Status400BadRequest);
}
ctx.Move(length);
var valueStart = ctx.IndexOf((byte)':');
ctx.Move(valueStart + 1);
if (!parse(ref ctx, stub))
{
return(StatusCodes.Status400BadRequest);
}
}
if (stub.id == 0 || stub.email.IsEmpty)
{
return(StatusCodes.Status400BadRequest);
}
return(StatusCodes.Status201Created);
}
private static bool TryParseAccountUpdate(ref ParseContext pctx, AccountStub stub)
{
const byte quote = (byte)'"';
while (pctx.Length > 0)
{
var propStart = pctx.IndexOf(quote) + 1; //+1 to remove quote
if (propStart < 1)
{
break;
}
pctx.Move(propStart);
var length = pctx.IndexOf(quote); //
ReadOnlySpan <byte> property = pctx.Span.Slice(0, length);
if (!JsonParser.ParseProperty(property, out JsonValueParser parse))
{
return(false);
}
pctx.Move(length);
//Parsing values.
var valueStart = pctx.IndexOf((byte)':');
pctx.Move(valueStart + 1);
if (!parse(ref pctx, stub))
{
return(false);
}
}
return(true);
}
private static void BadRequest(HttpContext context, AccountStub stub)
{
context.Response.StatusCode = StatusCodes.Status400BadRequest;
UpdatePool.Return(stub);
}
public static void Return(AccountStub stub) => _accountStubPool.Return(stub);
