private static void ProcessValue(RedisPipelineItem redisItem, byte[] value)
{
if (value == null)
{
redisItem.OnSuccess(null);
return;
}
var result = new byte[1][];
result[0] = value;
redisItem.OnSuccess(result);
}
public async Task ReadAsync(RedisPipelineItem redisItem)
{
// Everything is inline to prevent unncessary task allocations
// this code is called A LOT
await ReadResponseAsync().ConfigureAwait(false);
if (CurrentPosition >= CurrentResponse.Count)
{
await ReadNextResponseAsync().ConfigureAwait(false);
}
var firstChar = ReadFirstChar();
if (firstChar == RedisProtocolContants.SimpleString)
{
if (CurrentPosition >= CurrentResponse.Count)
{
await ReadNextResponseAsync().ConfigureAwait(false);
}
var bytes = new List <byte>();
var response = (IList <byte>)CurrentResponse;
var currentChar = response[CurrentPosition];
while (currentChar != RedisProtocolContants.LineFeed)
{
if (currentChar != RedisProtocolContants.CarriageReturn)
{
bytes.Add(currentChar);
}
CurrentPosition++;
if (CurrentPosition >= CurrentResponse.Count)
{
await ReadNextResponseAsync().ConfigureAwait(false);
response = CurrentResponse;
}
currentChar = response[CurrentPosition];
}
CurrentPosition++;
ProcessValue(redisItem, bytes.ToArray());
}
else if (firstChar == RedisProtocolContants.Integer)
{
if (CurrentPosition >= CurrentResponse.Count)
{
await ReadNextResponseAsync().ConfigureAwait(false);
}
var bytes = new List <byte>();
var response = (IList <byte>)CurrentResponse;
var currentChar = response[CurrentPosition];
while (currentChar != RedisProtocolContants.LineFeed)
{
if (currentChar != RedisProtocolContants.CarriageReturn)
{
bytes.Add(currentChar);
}
CurrentPosition++;
if (CurrentPosition >= CurrentResponse.Count)
{
await ReadNextResponseAsync().ConfigureAwait(false);
response = CurrentResponse;
}
currentChar = response[CurrentPosition];
}
CurrentPosition++;
ProcessValue(redisItem, bytes.ToArray());
}
else if (firstChar == RedisProtocolContants.BulkString)
{
var length = await ReadLengthAsync().ConfigureAwait(false);
if (length == -1)
{
ProcessValue(redisItem, null);
return;
}
var bytes = new List <byte>();
var response = (IList <byte>)CurrentResponse;
for (var i = 0; i < length; i++)
{
if (CurrentPosition >= CurrentResponse.Count)
{
await ReadNextResponseAsync().ConfigureAwait(false);
response = CurrentResponse;
}
var currentChar = response[CurrentPosition];
bytes.Add(currentChar);
CurrentPosition++;
}
for (var i = 0; i < 2; i++)
{
if (CurrentPosition >= CurrentResponse.Count)
{
await ReadNextResponseAsync().ConfigureAwait(false);
}
CurrentPosition++;
}
ProcessValue(redisItem, bytes?.ToArray());
}
else if (firstChar == RedisProtocolContants.Array)
{
var value = await ReadArrayAsync().ConfigureAwait(false);
redisItem.OnSuccess(value);
}
else if (firstChar == RedisProtocolContants.Error)
{
if (CurrentPosition >= CurrentResponse.Count)
{
await ReadNextResponseAsync().ConfigureAwait(false);
}
var bytes = new List <byte>();
var response = (IList <byte>)CurrentResponse;
var currentChar = response[CurrentPosition];
while (currentChar != RedisProtocolContants.LineFeed)
{
if (currentChar != RedisProtocolContants.CarriageReturn)
{
bytes.Add(currentChar);
}
CurrentPosition++;
if (CurrentPosition >= CurrentResponse.Count)
{
await ReadNextResponseAsync().ConfigureAwait(false);
response = CurrentResponse;
}
currentChar = response[CurrentPosition];
}
CurrentPosition++;
var errorText = Encoding.UTF8.GetString(bytes.ToArray());
var exception = new RedisException(errorText);
redisItem.OnError(exception);
}
else
{
var exception = new RedisException("Could not process Redis response.");
throw exception; // restart the pipeline.
}
}