/// <summary>
/// <see cref="ReliableCollectionsActorStateProvider"/> is currently in PREVIEW.
/// Initializes a new instance of the ReliableDictionaryActorStateProvider class
/// with specified configuration.
/// </summary>
/// <param name="stateManagerConfig">
/// A <see cref="ReliableStateManagerConfiguration"/> that describes <see cref="IReliableStateManager"/> configuration.
/// </param>
/// <param name="actorStateDictionaryCount">
/// Number of <see cref="IReliableDictionary{TKey, TValue}"/> across which actor states will be partitioned and stored.
/// </param>
/// <param name="reminderDictionaryCount">
/// Number of <see cref="IReliableDictionary{TKey, TValue}"/> across which reminders will be partitioned and stored.
/// </param>
/// <remarks>
/// Values for <paramref name="actorStateDictionaryCount"/> and <paramref name="reminderDictionaryCount"/> can be specified
/// only once when the Actor Service is created for first time. It cannot be changed after that and
/// <see cref="ReliableCollectionsActorStateProvider"/> will ignore any values that are different from first time.
/// </remarks>
public ReliableCollectionsActorStateProvider(
ReliableStateManagerConfiguration stateManagerConfig,
int actorStateDictionaryCount,
int reminderDictionaryCount)
{
if (actorStateDictionaryCount < 1)
{
throw new ArgumentException("Value for actorStateDictionaryCount cannot be less than 1.");
}
if (reminderDictionaryCount < 1)
{
throw new ArgumentException("Value for reminderDictionaryCount cannot be less than 1.");
}
this.traceId = string.Empty;
this.isLogicalTimeManagerInitialized = false;
this.isDictionariesInitialized = false;
this.replicaRole = ReplicaRole.Unknown;
this.transientErrorRetryDelay = TimeSpan.FromSeconds(DefaultTransientErrorRetryDelaySeconds);
this.userDefinedStateManagerConfig = stateManagerConfig;
this.userDefinedActorStateDictionaryCount = actorStateDictionaryCount;
this.userDefinedReminderDictionaryCount = reminderDictionaryCount;
this.logicalTimeManager = new VolatileLogicalTimeManager(this);
this.actorStateSerializer = new ActorStateProviderSerializer();
this.stateProviderHelper = new ActorStateProviderHelper(this);
}
Task IActorStateProvider.ActorActivatedAsync(ActorId actorId, CancellationToken cancellationToken)
{
var key = ActorStateProviderHelper.CreateActorPresenceStorageKey(actorId);
this.stateDictionary.TryAdd(key, null);
return(Task.FromResult(true));
}
private ReplicatorSettings GetReplicatorSettings()
{
// Even though NullActorStateProvider don't replicate any state, we need
// to keep the copy stream and the replication stream drained at all times.
// This is required in order to unblock role changes. Hence we need to
// specify a valid replicator address in the settings.
return(ActorStateProviderHelper.GetActorReplicatorSettings(
this.initParams.CodePackageActivationContext,
this.actorTypeInformation.ImplementationType));
}
protected void LoadFromSettings(
ICodePackageActivationContext activationContext,
string configPackageName,
string sectionName)
{
ConfigurationSection section;
if (ActorStateProviderHelper.TryGetConfigSection(activationContext, configPackageName, sectionName, out section))
{
this.LoadFromSection(section);
}
}
protected virtual void LoadFromSection(ConfigurationSection section)
{
this.TransientErrorRetryDelay = ActorStateProviderHelper.GetTimeConfigInSecondsAsTimeSpan(
section,
TransientErrorRetryDelayParameterName,
this.TransientErrorRetryDelay);
this.OperationTimeout = ActorStateProviderHelper.GetTimeConfigInSecondsAsTimeSpan(
section,
OperationTimeoutParameterName,
this.OperationTimeout);
}
protected override void LoadFromSection(ConfigurationSection section)
{
base.LoadFromSection(section);
this.BackupCallbackSlowCancellationHealthReportTimeToLive = ActorStateProviderHelper.GetTimeConfigInSecondsAsTimeSpan(
section,
BackupCallbackSlowCancellationHealthReportTimeToLiveParameterName,
this.BackupCallbackSlowCancellationHealthReportTimeToLive);
this.BackupCallbackExpectedCancellationTime = ActorStateProviderHelper.GetTimeConfigInSecondsAsTimeSpan(
section,
BackupCallbackExpectedCancellationTimeParameterName,
this.BackupCallbackExpectedCancellationTime);
}
/// <summary>
/// Initializes a new instance of the <see cref="ActorService"/> class.
/// </summary>
/// <param name="context">Service context the actor service is operating under.</param>
/// <param name="actorTypeInfo">The type information of the Actor.</param>
/// <param name="actorFactory">The factory method to create Actor objects.</param>
/// <param name="stateManagerFactory">The factory method to create <see cref="IActorStateManager"/></param>
/// <param name="stateProvider">The state provider to store and access the state of the Actor objects.</param>
/// <param name="settings">The settings used to configure the behavior of the Actor service.</param>
public ActorService(
StatefulServiceContext context,
ActorTypeInformation actorTypeInfo,
Func <ActorService, ActorId, ActorBase> actorFactory = null,
Func <ActorBase, IActorStateProvider, IActorStateManager> stateManagerFactory = null,
IActorStateProvider stateProvider = null,
ActorServiceSettings settings = null)
: base(
context,
stateProvider ?? ActorStateProviderHelper.CreateDefaultStateProvider(actorTypeInfo))
{
this.actorTypeInformation = actorTypeInfo;
this.stateProvider = (IActorStateProvider)this.StateProviderReplica;
this.settings = ActorServiceSettings.DeepCopyFromOrDefaultOnNull(settings);
// Set internal components
this.actorActivator = new ActorActivator(actorFactory ?? this.DefaultActorFactory);
this.stateManagerFactory = stateManagerFactory ?? DefaultActorStateManagerFactory;
this.actorManagerAdapter = new ActorManagerAdapter {
ActorManager = new MockActorManager(this)
};
this.replicaRole = ReplicaRole.Unknown;
}
Task IActorStateProvider.RemoveActorAsync(ActorId actorId, CancellationToken cancellationToken)
{
var actorStorageKeyPrefix = CreateActorStorageKeyPrefix(actorId, string.Empty);
var reminderStorgaeKeyPrefix = CreateReminderStorageKeyPrefix(actorId, string.Empty);
object value;
foreach (var kvPair in this.stateDictionary)
{
if (kvPair.Key.StartsWith(actorStorageKeyPrefix) ||
kvPair.Key.StartsWith(reminderStorgaeKeyPrefix))
{
this.stateDictionary.TryRemove(kvPair.Key, out value);
}
}
// Delete actor presence key
var key = ActorStateProviderHelper.CreateActorPresenceStorageKey(actorId);
this.stateDictionary.TryRemove(key, out value);
return(Task.FromResult(true));
}
public NullActorStateProvider()
{
this.currentRole = ReplicaRole.Unknown;
this.stateDictionary = new ConcurrentDictionary <string, object>();
this.actorStateProviderHelper = new ActorStateProviderHelper(this);
}
