Stratara.Contracts 4.0.2

Prefix Reserved

There is a newer version of this package available.
See the version list below for details.

dotnet add package Stratara.Contracts --version 4.0.2

NuGet\Install-Package Stratara.Contracts -Version 4.0.2

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="Stratara.Contracts" Version="4.0.2" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="Stratara.Contracts" Version="4.0.2" />
                    

                            Directory.Packages.props

<PackageReference Include="Stratara.Contracts" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add Stratara.Contracts --version 4.0.2

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: Stratara.Contracts, 4.0.2"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

#:package Stratara.Contracts@4.0.2

#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package.

#addin nuget:?package=Stratara.Contracts&version=4.0.2
                    

                            Install as a Cake Addin

#tool nuget:?package=Stratara.Contracts&version=4.0.2
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Stratara.Contracts

Derived. The behaviour described here is specified under openspec/specs/. Those specifications are the source; this page explains and illustrates them.

License: MIT.

Wire-level POCO contracts shared by every Stratara package. Pure data records — no runtime, no DI, no infrastructure deps. Safe to reference from any layer.

Messages/EventMessage, EventBundle, CommandEnvelope — the cross-process envelope shapes that messaging adapters (Stratara.Outbox.RabbitMQ etc.) serialise on and off the bus.
Requests/PagedRequest — shared pagination + sort record used by query handlers across the family.
Session/SessionContext — public data shape for actor/subject identity, correlation, causation, and connection routing. The ISessionContextProvider service abstraction lives in Stratara.Abstractions; the ASP.NET Core middleware that populates it lives in Stratara.Sessions.

Quick reference

// Build a CommandEnvelope outside the framework (rare, but supported)
var envelope = new CommandEnvelope(
    Id: Guid.CreateVersion7(),
    CommandJson: commandJson,
    CommandTypeName: typeof(MyCommand).AssemblyQualifiedName!,
    SessionContextJson: sessionContextJson);

Dependencies

None. Contracts is the lowest tier in the Stratara dependency graph.

Product	Compatible and additional computed target framework versions.
.NET	net10.0 is compatible. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed.

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

net10.0
- No dependencies.

NuGet packages (9)

Showing the top 5 NuGet packages that depend on Stratara.Contracts:

Package	Downloads
Stratara.Abstractions Contract interfaces and POCO records for the Stratara CQRS / Event Sourcing framework — Mediator, EventSourcing, Persistence, Outbox, Messaging, Session, Security, Authorization. Library-safe, no EF Core or message-bus runtime.	13.6K
Stratara.Sessions ASP.NET Core middleware and provider for Stratara's Actor/Subject session model. Reads tenant and user from JWT claims (or X-Tenant-Id / X-Client-Id headers) and populates the ambient ISessionContextProvider for every request.	12.1K
Stratara.Shared Umbrella package for the Stratara framework — source-generated logger extensions for command flows, domain-event helpers, merge primitives, and the Tier-A/B abstractions surface re-exported as one transitive bundle.	9.3K
Stratara.Projections Projection runtime for the Stratara event-sourced stack — projection-handler discovery, change-set creation, update application, and projection manager. Sits between read-model repositories and the event-bundle dispatcher.	5.4K
Stratara.Outbox.RabbitMQ Outbox-pattern command and event dispatch for the Stratara event-sourced stack — RabbitMQ IMessageBus implementation, retry worker, mediator command worker, and Redis-coordinated projection-replay state. Azure Service Bus support ships as the sibling Stratara.Outbox.AzureServiceBus package.	4.9K

GitHub repositories

This package is not used by any popular GitHub repositories.

Version	Downloads	Last Updated
4.2.0	120	9/18/2026
4.1.1	308	9/16/2026
4.1.0	248	9/16/2026
4.0.4	919	9/14/2026
4.0.3	409	9/3/2026
4.0.2	814	9/3/2026
4.0.1	413	9/2/2026
4.0.0	845	8/31/2026
4.0.0-preview.1	162	8/31/2026
3.4.0	388	8/28/2026
3.3.0	547	8/25/2026
3.2.3	376	8/22/2026
3.2.2	927	8/14/2026
3.2.1	928	8/2/2026
3.2.0	356	7/18/2026
3.1.7	622	7/1/2026
3.1.6	760	6/22/2026
3.1.5	335	6/22/2026
3.1.4	2,208	6/15/2026
3.1.3	341	6/10/2026

Two operational fixes, both found while a consumer rolled out bus-envelope signing and reasoned
about rebuilding its read models: a projection replay now survives a passing failure, and an
integrity failure says whether the signature was absent or wrong. Additive on every published
surface.

### Added

- **A projection replay retries a failing batch before it gives up.** Each batch — the read from
the event store and the application of its entries — now runs under a new named policy,
`ResilienceNames.ProjectionReplayBatch`: five attempts in all, exponential backoff from one second
with jitter between them, any exception except cancellation. A read-store timeout or a
dropped connection mid-rebuild no longer ends the replay; a failure that persists through every
attempt ends it exactly as before, with the same failure record. A retried batch is applied
again from its first entry in a fresh scope, which relies on the guarantee projections already
give under at-least-once delivery: a second application converges (see *Write handlers that
converge rather than accumulate* in the projection guide). Each failed attempt logs a new
warning, `104_011`. `AddResiliencePipelines` registers six policies rather than five. Nothing
about truncation, ordering, progress, the failure record or the lease changes.

### Changed

- **An integrity failure now says whether the signature was absent or wrong, and the existing
warning and error ids fire only for a signature that is present and does not verify.** An
unsigned envelope — what every not-yet-restarted publisher emits during a `Permissive` roll —
was logged as *"signature mismatch"* under the same id as a key mismatch or tampering, so an
operator could not tell a rolling restart from an attack without correlating host start times.
Four new event ids carry the unsigned case: `105_004` (command, permissive), `111_004` (event
bundle, permissive), `105_105` (command, strict) and `111_105` (event bundle, strict). The
existing `105_003`, `111_003`, `105_104` and `111_104` keep their numbers and their level but
now mean a present signature that did not verify; an alert keyed on one of them goes quiet
during a roll instead of firing for every unsigned message. Strict-mode rejections name the
case in their exception message. `BusEnvelopeIntegrityVerifier.Verify` gains an overload with
`out BusEnvelopeIntegrityFailure` (`None`, `Absent`, `Invalid`); the existing overload and the
`BusEnvelopeIntegrityResult` values are unchanged. An absent signature no longer reaches the
signer, which already answered `false` for it.