public (bool sent, bool clients) TrySendMessage(string parentPipeName, string childPipeName, object body, int maxListLength = int.MaxValue, TimeSpan?expiry = null)
{
if (body == null)
{
throw new ArgumentNullException(nameof(body));
}
//will throw ArgumentException is body is not a supported type
var redisValue = RedisValue.Unbox(body);
var db = _redis.GetDatabase();
var parentInfoPath = CreateParentChildSetPath(parentPipeName);
var childPipePath = PipeInfo.Create(parentPipeName, childPipeName);
var trans = db.CreateTransaction();
{
if (maxListLength < int.MaxValue)
{
trans.AddCondition(Condition.ListLengthLessThan(childPipePath.PipePath, maxListLength));
}
//ensure the name of the new pipe exists for the pipe monitor (before checking list length)
db.SetAdd(RedisTaskMultiplexorConstants.PipeNameSetKey, parentPipeName);
//add the child to the parents hash set (and update the expiry time on it)
db.HashSet(parentInfoPath, childPipeName, DateConverters.ExpiryToTimeString(expiry ?? TimeSpan.FromDays(7)));
//add the message to the left of the list, and is later popped from the right.
db.ListLeftPush(childPipePath.PipePath, redisValue);
}
var executed = trans.Execute();
if (!executed)
{
return(false, false);
}
var sub = _redis.GetSubscriber();
var listeners = sub.Publish(childPipePath.BroadcastPath, $"{{\"type\":\"new\",\"parent\":\"{parentPipeName}\",\"child\":\"{childPipeName}\"}}");
return(true, listeners > 0);
}
public static (DateTime expiry, string pipePath) ReadBatchInfo(RedisValue value)
{
var parts = value.ToString().Split('|');
return(DateConverters.FromRedisStringAsDateTime(parts.FirstOrDefault()), parts.Skip(1).FirstOrDefault());
}
public static RedisValue MakeBatchInfo(TimeSpan expiry, string pipePath)
{
return($"{DateConverters.ExpiryToTimeString(expiry)}|{pipePath}");
}
