Class NoSnapshotStore

Used as a default snapshot-store in case no other store was configured.

If a PersistentActor calls the SaveSnapshot(object) method, and at the same time does not configure a specific snapshot-store to be used and no default snapshot-store is available, then the NoSnapshotStore will be used to signal a snapshot store failure.

Inheritance
object
ActorBase
SnapshotStore
NoSnapshotStore
Implements
Inherited Members
Namespace: Akka.Persistence.Snapshot
Assembly: Akka.Persistence.dll
Syntax
public sealed class NoSnapshotStore : SnapshotStore, IInternalActor

Methods

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DeleteAsync(SnapshotMetadata, CancellationToken)

Declaration
protected override Task DeleteAsync(SnapshotMetadata metadata, CancellationToken cancellationToken)
Parameters
Type Name Description
SnapshotMetadata metadata
CancellationToken cancellationToken
Returns
Type Description
Task
Overrides
Exceptions
Type Condition
NoSnapshotStore.NoSnapshotStoreException

This exception is thrown when no snapshot store is configured.
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DeleteAsync(string, SnapshotSelectionCriteria, CancellationToken)

Declaration
protected override Task DeleteAsync(string persistenceId, SnapshotSelectionCriteria criteria, CancellationToken cancellationToken)
Parameters
Type Name Description
string persistenceId
SnapshotSelectionCriteria criteria
CancellationToken cancellationToken
Returns
Type Description
Task
Overrides
Exceptions
Type Condition
NoSnapshotStore.NoSnapshotStoreException

This exception is thrown when no snapshot store is configured.
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LoadAsync(string, SnapshotSelectionCriteria, CancellationToken)

Plugin API: Asynchronously loads a snapshot.

This call is protected with a circuit-breaker

Declaration
protected override Task<SelectedSnapshot> LoadAsync(string persistenceId, SnapshotSelectionCriteria criteria, CancellationToken cancellationToken)
Parameters
Type Name Description
string persistenceId

Id of the persistent actor.
SnapshotSelectionCriteria criteria

Selection criteria for loading.
CancellationToken cancellationToken

CancellationToken used to signal cancelled snapshot operation
Returns
Type Description
Task<SelectedSnapshot>
Overrides
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SaveAsync(SnapshotMetadata, object, CancellationToken)

Declaration
protected override Task SaveAsync(SnapshotMetadata metadata, object snapshot, CancellationToken cancellationToken)
Parameters
Type Name Description
SnapshotMetadata metadata
object snapshot
CancellationToken cancellationToken
Returns
Type Description
Task
Overrides
Exceptions
Type Condition
NoSnapshotStore.NoSnapshotStoreException

This exception is thrown when no snapshot store is configured.

Implements

Extension Methods