/// <summary>
/// Register a named entity type `ShardRegion` on this node that will run in proxy only mode, i.e.it will
/// delegate messages to other `ShardRegion` actors on other nodes, but not host any entity actors itself.
/// The <see cref="Sharding.ShardRegion"/> actor for this type can later be retrieved with the
/// <see cref="ShardRegion"/> method.
/// </summary>
/// <param name="typeName">The name of the entity type.</param>
/// <param name="role">
/// Specifies that this entity type is located on cluster nodes with a specific role.
/// If the role is not specified all nodes in the cluster are used.
/// </param>
/// <param name="idExtractor">
/// Partial function to extract the entity id and the message to send to the entity from the incoming message,
/// if the partial function does not match the message will be `unhandled`, i.e.posted as `Unhandled` messages
/// on the event stream
/// </param>
/// <param name="shardResolver">
/// Function to determine the shard id for an incoming message, only messages that passed the `extractEntityId` will be used
/// </param>
/// <returns>The actor ref of the <see cref="Sharding.ShardRegion"/> that is to be responsible for the shard.</returns>
public async Task <IActorRef> StartProxyAsync(string typeName, string role, IdExtractor idExtractor, ShardResolver shardResolver)
{
var timeout = _system.Settings.CreationTimeout;
var settings = ClusterShardingSettings.Create(_system).WithRole(role);
var startMsg = new ClusterShardingGuardian.StartProxy(typeName, settings, idExtractor, shardResolver);
var started = await _guardian.Value.Ask <ClusterShardingGuardian.Started>(startMsg, timeout);
_regions.TryAdd(typeName, started.ShardRegion);
return(started.ShardRegion);
}
/// <summary>
/// Register a named entity type `ShardRegion` on this node that will run in proxy only mode, i.e.it will
/// delegate messages to other `ShardRegion` actors on other nodes, but not host any entity actors itself.
/// The <see cref="Sharding.ShardRegion"/> actor for this type can later be retrieved with the
/// <see cref="ShardRegion"/> method.
/// </summary>
/// <param name="typeName">The name of the entity type.</param>
/// <param name="role">
/// Specifies that this entity type is located on cluster nodes with a specific role.
/// If the role is not specified all nodes in the cluster are used.
/// </param>
/// <param name="extractEntityId">
/// Partial function to extract the entity id and the message to send to the entity from the incoming message,
/// if the partial function does not match the message will be `unhandled`, i.e.posted as `Unhandled` messages
/// on the event stream
/// </param>
/// <param name="extractShardId">
/// Function to determine the shard id for an incoming message, only messages that passed the `extractEntityId` will be used
/// </param>
/// <returns>The actor ref of the <see cref="Sharding.ShardRegion"/> that is to be responsible for the shard.</returns>
public IActorRef StartProxy(string typeName, string role, ExtractEntityId extractEntityId, ExtractShardId extractShardId)
{
var timeout = _system.Settings.CreationTimeout;
var settings = ClusterShardingSettings.Create(_system).WithRole(role);
var startMsg = new ClusterShardingGuardian.StartProxy(typeName, settings, extractEntityId, extractShardId);
var started = _guardian.Value.Ask <ClusterShardingGuardian.Started>(startMsg, timeout).Result;
_regions.TryAdd(typeName, started.ShardRegion);
return(started.ShardRegion);
}
public ClusterSharding(ExtendedActorSystem system)
{
_system = system;
_system.Settings.InjectTopLevelFallback(DefaultConfig());
_cluster = Cluster.Get(_system);
Settings = ClusterShardingSettings.Create(system);
_guardian = new Lazy <IActorRef>(() =>
{
var guardianName = system.Settings.Config.GetString("akka.cluster.sharding.guardian-name");
var dispatcher = system.Settings.Config.GetString("akka.cluster.sharding.use-dispatcher");
if (string.IsNullOrEmpty(dispatcher))
{
dispatcher = Dispatchers.DefaultDispatcherId;
}
return(system.ActorOf(Props.Create(() => new ClusterShardingGuardian()).WithDispatcher(dispatcher), guardianName));
});
}
