|
static private Multi ( |
||
| inner | ||
| return | ||
private RedisResult ReadSingleResult()
{
byte b = ReadByteOrFail();
switch ((char)b)
{
case '+':
return(RedisResult.Message(ReadBytesToCrlf()));
case '-':
return(RedisResult.Error(ReadStringToCrlf()));
case ':':
return(RedisResult.Integer(ReadInt64()));
case '$':
return(RedisResult.Bytes(ReadBulkBytes()));
case '*':
var count = (int)ReadInt64();
if (count == -1)
{
return(RedisResult.Multi(null));
}
var inner = new RedisResult[count];
for (int i = 0; i < count; i++)
{
inner[i] = ReadSingleResult();
}
return(RedisResult.Multi(inner));
default:
throw new RedisException("Not expecting header: &x" + b.ToString("x2"));
}
}
void IMultiMessage.Execute(RedisConnectionBase conn, ref int currentDb)
{
var pending = messages;
if (ExecutePreconditions(conn, ref currentDb))
{
conn.WriteRaw(this); // MULTI
List <QueuedMessage> newlyQueued = new List <QueuedMessage>(pending.Length); // estimate same length
for (int i = 0; i < pending.Length; i++)
{
conn.WriteMessage(ref currentDb, pending[i], newlyQueued);
}
newlyQueued.TrimExcess();
conn.WriteMessage(ref currentDb, Execute(newlyQueued), null);
}
else
{
// preconditions failed; ABORT
conn.WriteMessage(ref currentDb, RedisMessage.Create(-1, RedisLiteral.UNWATCH).ExpectOk().Critical(), null);
// even though these weren't written, we still need to mark them cancelled
exec.Abort(pending);
// spoof a rollback; same appearance to the caller
exec.Complete(RedisResult.Multi(null), false);
}
}
void IMultiMessage.Execute(RedisConnectionBase conn, ref int currentDb)
{
RedisMessage[] pending = messages;
int estimateCount = pending.Length;
if (ExecutePreconditions(conn, ref currentDb))
{
conn.WriteRaw(this); // MULTI
var newlyQueued = new List <QueuedMessage>(pending.Length);
for (int i = 0; i < pending.Length; i++)
{
conn.WriteMessage(ref currentDb, pending[i], newlyQueued);
}
newlyQueued.TrimExcess();
conn.WriteMessage(ref currentDb, Execute(newlyQueued), null);
}
else
{
// preconditions failed; ABORT
conn.WriteMessage(ref currentDb, Create(-1, RedisLiteral.UNWATCH).ExpectOk().Critical(), null);
exec.Complete(RedisResult.Multi(null)); // spoof a rollback; same appearance to the caller
}
}