public RespValue Execute(IExecutionContext context, RespValue request)
{
try
{
EnsureArray(request);
var requestParts = request.GetItems();
EnsureNonEmptyArray(requestParts);
var commandPart = requestParts.First();
var argumentsPart = requestParts.Skip(1).ToArray();
var commandName = commandPart.GetString().ToUpperInvariant();
ICommand command;
if (!commandsMap.TryGetValue(commandName, out command))
{
return RespValue.Error(string.Format("ERR Unknown command '{0}'", commandName));
}
return command.Execute(context, argumentsPart);
}
catch (Exception)
{
return SharedContrants.UnknownError;
}
}
private static void WriteRespValue(Stream stream, RespValue respValue)
{
switch (respValue.Type)
{
case RespValueType.SimpleString:
WriteSimpleString(stream, respValue);
break;
case RespValueType.Error:
WriteErrorString(stream, respValue);
break;
case RespValueType.BulkString:
WriteBulkString(stream, respValue);
break;
case RespValueType.Array:
{
if (respValue.IsNull())
{
WriteNullable(stream, '*');
}
else
{
var respValues = respValue.GetItems();
WriteHeader(stream, '*');
WriteInt(stream, respValues.Length);
WriteCrLf(stream);
foreach (var item in respValues)
WriteRespValue(stream, item);
}
break;
}
case RespValueType.Integer:
{
WriteInteger(stream, respValue);
break;
}
default:
throw new ArgumentOutOfRangeException("respValue", respValue.Type.ToString());
}
}