Bump Akka.Hosting and Akka.Streams

[dependabot]

Updated Akka.Hosting from 1.5.55.1 to 1.5.57.

Release notes

Sourced from Akka.Hosting's releases.

1.5.57

1.5.57 December 16th 2025

New Features

• Add semantic logging support for Akka.NET 1.5.56+ - enables Microsoft.Extensions.Logging to receive properly structured state dictionaries instead of pre-formatted strings. When using Akka.NET 1.5.56+, log messages now include structured properties from the semantic logging API along with Akka metadata (ActorPath, Timestamp, Thread, LogSource). Fully backwards compatible with older Akka.NET versions.

Updates

• Bump Akka version from 1.5.55 to 1.5.57

1.5.55.1 October 27th 2025

Enhancements

• Expose options in journal and snapshot builders - resolved issue #​690 by adding Options property to AkkaPersistenceJournalBuilder and AkkaPersistenceSnapshotBuilder. Extension methods can now access configuration details without requiring options as explicit parameters, eliminating redundant option passing for connectivity health checks and other plugin-specific features

1.5.55 October 26th 2025

New Features

• Support custom health check registrations on Journal and Snapshot Builders - added API to support custom health check registrations for Akka.Persistence plugins, related to issue #​678
• Add support for custom certificate validation callbacks - integrated the new CertificateValidationCallback feature from Akka.NET v1.5.55, allowing users to provide custom certificate validation logic for SSL/TLS connections. Enables advanced scenarios including certificate pinning, subject/issuer matching, custom business validation rules, and advanced mTLS scenarios

Enhancements

• Add customizable tags parameter to health check methods - resolved issue #​679 by adding new overload allowing custom tags for health checks while maintaining backward compatibility
• Made it easier to customize failureState and tags for all health checks - simplified health check configuration API for all health checks

Updates

• Bump Akka version from 1.5.53 to 1.5.55

1.5.55-beta1 October 26th 2025

New Features

• Support custom health check registrations on Journal and Snapshot Builders - added API to support custom health check registrations for Akka.Persistence plugins, related to issue #​678

Enhancements

• Add customizable tags parameter to health check methods - resolved issue #​679 by adding new overload allowing custom tags for health checks while maintaining backward compatibility
• Made it easier to customize failureState and tags for all health checks - simplified health check configuration API for all health checks

Updates

• Bump Akka version from 1.5.53 to 1.5.55

1.5.53 October 14th 2025

Bug Fixes

• Fix event adapter callback API not invoking adapters at runtime - resolved critical bug where event adapters configured via the callback API were not being invoked at runtime. This fix is especially important for users who have migrated to the callback pattern following the deprecation of JournalOptions.Adapters property. The issue was caused by unnecessary fallback configuration that interfered with adapter registration during HOCON merging.

Updates

• Add SSL/TLS configuration settings from Akka.NET 1.5.52 and 1.5.53 - updated SSL/TLS configuration options to support new features and settings introduced in Akka.NET versions 1.5.52 and 1.5.53
• Bump Akka version from 1.5.52 to 1.5.53

1.5.52 October 9th 2025

API Changes
... (truncated)

1.5.57-beta2

1.5.57-beta2 December 3rd 2025

New Features

• Add semantic logging support for Akka.NET 1.5.56+ - enables Microsoft.Extensions.Logging to receive properly structured state dictionaries instead of pre-formatted strings. When using Akka.NET 1.5.56+, log messages now include structured properties from the semantic logging API along with Akka metadata (ActorPath, Timestamp, Thread, LogSource). Fully backwards compatible with older Akka.NET versions.

Updates

• Bump Akka version from 1.5.55 to 1.5.57-beta2

1.5.55.1 October 27th 2025

Enhancements

• Expose options in journal and snapshot builders - resolved issue #​690 by adding Options property to AkkaPersistenceJournalBuilder and AkkaPersistenceSnapshotBuilder. Extension methods can now access configuration details without requiring options as explicit parameters, eliminating redundant option passing for connectivity health checks and other plugin-specific features

1.5.55 October 26th 2025

New Features

• Support custom health check registrations on Journal and Snapshot Builders - added API to support custom health check registrations for Akka.Persistence plugins, related to issue #​678
• Add support for custom certificate validation callbacks - integrated the new CertificateValidationCallback feature from Akka.NET v1.5.55, allowing users to provide custom certificate validation logic for SSL/TLS connections. Enables advanced scenarios including certificate pinning, subject/issuer matching, custom business validation rules, and advanced mTLS scenarios

Enhancements

• Add customizable tags parameter to health check methods - resolved issue #​679 by adding new overload allowing custom tags for health checks while maintaining backward compatibility
• Made it easier to customize failureState and tags for all health checks - simplified health check configuration API for all health checks

Updates

• Bump Akka version from 1.5.53 to 1.5.55

1.5.55-beta1 October 26th 2025

New Features

• Support custom health check registrations on Journal and Snapshot Builders - added API to support custom health check registrations for Akka.Persistence plugins, related to issue #​678

Enhancements

• Add customizable tags parameter to health check methods - resolved issue #​679 by adding new overload allowing custom tags for health checks while maintaining backward compatibility
• Made it easier to customize failureState and tags for all health checks - simplified health check configuration API for all health checks

Updates

• Bump Akka version from 1.5.53 to 1.5.55

1.5.53 October 14th 2025

Bug Fixes

• Fix event adapter callback API not invoking adapters at runtime - resolved critical bug where event adapters configured via the callback API were not being invoked at runtime. This fix is especially important for users who have migrated to the callback pattern following the deprecation of JournalOptions.Adapters property. The issue was caused by unnecessary fallback configuration that interfered with adapter registration during HOCON merging.

Updates

• Add SSL/TLS configuration settings from Akka.NET 1.5.52 and 1.5.53 - updated SSL/TLS configuration options to support new features and settings introduced in Akka.NET versions 1.5.52 and 1.5.53
• Bump Akka version from 1.5.52 to 1.5.53

1.5.52 October 9th 2025

API Changes
... (truncated)

Commits viewable in compare view.

Updated Akka.Streams from 1.5.56 to 1.5.57.

Release notes

Sourced from Akka.Streams's releases.

1.5.57

1.5.57 December 11th, 2025

Akka.NET v1.5.57 is a minor release containing significant new features for Akka.Persistence and structured/semantic logging.

Akka.Persistence Completion Callbacks and Async Handler Support

• Persistence completion callbacks via Defer - simplified alternative - This release adds completion callback and async handler support to Persist, PersistAsync, PersistAll, and PersistAllAsync methods in Akka.Persistence. Key improvements include:
  • Async Handler Support: All persist methods now support Func<TEvent, Task> handlers for async event processing
  • Completion Callbacks: PersistAll and PersistAllAsync now accept optional completion callbacks (both sync Action and async Func<Task>) that execute after all events are persisted and handled
  • Ordering Guarantees: Completion callbacks use Defer/DeferAsync internally to maintain strict ordering guarantees
  • Zero Breaking Changes: All new APIs are additive overloads

Persistence Code Examples:

// Async handler support - process events asynchronously
Persist(new OrderPlaced(orderId), async evt =>
{
    await _orderService.ProcessOrderAsync(evt);
});

// PersistAll with completion callback - know when all events are done
PersistAll(orderEvents, evt =>
{
    _state.Apply(evt);
}, onComplete: () =>
{
    // All events persisted and handlers executed
    _logger.Info("Order batch completed");
    Sender.Tell(new BatchComplete());
});

// PersistAll with async handler AND async completion callback
PersistAll(events,
    handler: async evt => await ProcessEventAsync(evt),
    onCompleteAsync: async () =>
    {
        await NotifyCompletionAsync();
        Sender.Tell(Done.Instance);
    });

// PersistAllAsync with completion - allows commands between handlers
PersistAllAsync(largeEventBatch,
    handler: evt => _state.Apply(evt),
    onComplete: () => Sender.Tell(new BatchProcessed()));

The implementation maintains Akka.Persistence's strict ordering guarantees by using Defer/DeferAsync for completion callbacks, ensuring they execute in order even when called with empty event collections. The new async handler invocations (IAsyncHandlerInvocation) are processed via RunTask to preserve the actor's single-threaded execution model.

Native Semantic Logging Support
... (truncated)

1.5.57-beta2

1.5.57-beta2 December 2nd, 2025

Akka.NET v1.5.57-beta2 is a beta release containing significant new APIs for Akka.Persistence that add completion callbacks and async handler support.

New Features:

• Persistence completion callbacks via Defer - simplified alternative - This release adds completion callback and async handler support to Persist, PersistAsync, PersistAll, and PersistAllAsync methods in Akka.Persistence. Key improvements include:
  • Async Handler Support: All persist methods now support Func<TEvent, Task> handlers for async event processing
  • Completion Callbacks: PersistAll and PersistAllAsync now accept optional completion callbacks (both sync Action and async Func<Task>) that execute after all events are persisted and handled
  • Ordering Guarantees: Completion callbacks use Defer/DeferAsync internally to maintain strict ordering guarantees
  • Zero Breaking Changes: All new APIs are additive overloads

Code Examples:

// Async handler support - process events asynchronously
Persist(new OrderPlaced(orderId), async evt =>
{
    await _orderService.ProcessOrderAsync(evt);
});

// PersistAll with completion callback - know when all events are done
PersistAll(orderEvents, evt =>
{
    _state.Apply(evt);
}, onComplete: () =>
{
    // All events persisted and handlers executed
    _logger.Info("Order batch completed");
    Sender.Tell(new BatchComplete());
});

// PersistAll with async handler AND async completion callback
PersistAll(events,
    handler: async evt => await ProcessEventAsync(evt),
    onCompleteAsync: async () =>
    {
        await NotifyCompletionAsync();
        Sender.Tell(Done.Instance);
    });

// PersistAllAsync with completion - allows commands between handlers
PersistAllAsync(largeEventBatch,
    handler: evt => _state.Apply(evt),
    onComplete: () => Sender.Tell(new BatchProcessed()));

Technical Details:

The implementation maintains Akka.Persistence's strict ordering guarantees by using Defer/DeferAsync for completion callbacks, ensuring they execute in order even when called with empty event collections. The new async handler invocations (IAsyncHandlerInvocation) are processed via RunTask to preserve the actor's single-threaded execution model.
... (truncated)

1.5.57-beta1

1.5.57-beta1 December 2nd, 2025

Akka.NET v1.5.57-beta1 is a beta release containing a significant new feature for structured/semantic logging.

New Features:

• Add native semantic logging support with property extraction - Fixes issue #​7932. This release adds comprehensive structured logging support to Akka.NET with both positional ({0}) and named ({PropertyName}) message template parsing, enabling seamless integration with modern logging frameworks like Serilog, NLog, and Microsoft.Extensions.Logging. Key capabilities include:
  • New LogMessage.PropertyNames and GetProperties() APIs for property extraction
  • SemanticLogMessageFormatter as the new default formatter
  • Performance optimized with 75% allocation reduction compared to the previous implementation
  • Zero new dependencies and fully backward compatible
  • EventFilter support for semantic templates in unit tests

1 contributor since release 1.5.56

COMMITS	LOC+	LOC-	AUTHOR
1	2317	14	Aaron Stannard

To see the full set of changes in Akka.NET v1.5.57-beta1, click here

Changes:

• e94b4ad80895edcfa84d8cca3343c776efe02fd3 Remove Cmd demand from Windows release pipeline
• 5e4e5de6c56e339099a224629537ad01822d2f47 Update RELEASE_NOTES.md for 1.5.57-beta1 release (#​7956)
• 0f239487e8924542dc92ad2725f9981a5f7cfe70 feat: Add native semantic logging support with property extraction (#​7933) (#​7955) [ #​7932 ]

This list of changes was auto generated.

Commits viewable in compare view.

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