Stratara.ServiceDefaults 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There is a newer version of this package available.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.ServiceDefaults --version 4.0.2
                    
NuGet\Install-Package Stratara.ServiceDefaults -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.ServiceDefaults" Version="4.0.2" />
                    
For projects that support PackageReference, copy this XML node into the project file to reference the package.
<PackageVersion Include="Stratara.ServiceDefaults" Version="4.0.2" />
                    
Directory.Packages.props
<PackageReference Include="Stratara.ServiceDefaults" />
                    
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.ServiceDefaults --version 4.0.2
                    
#r "nuget: Stratara.ServiceDefaults, 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.ServiceDefaults@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.ServiceDefaults&version=4.0.2
                    
Install as a Cake Addin
#tool nuget:?package=Stratara.ServiceDefaults&version=4.0.2
                    
Install as a Cake Tool

Stratara.ServiceDefaults

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

License: MIT.

Cross-host observability defaults for the Stratara stack. Reference from every host (API, worker) to get OpenTelemetry + Serilog wired up with sensible defaults.

What's in the box

Extension Purpose
ConfigureOpenTelemetry Logging + metrics + tracing with HTTP, EF Core, RabbitMQ, runtime instrumentation; OTLP exporter wired up automatically when OTEL_EXPORTER_OTLP_ENDPOINT is set. Accepts optional MeterProviderBuilder / TracerProviderBuilder callbacks for host-specific extras.
ConfigureSerilog Structured logging with destructuring attributes, async console sink, OTLP sink (gRPC or HTTP/Protobuf based on OTEL_EXPORTER_OTLP_PROTOCOL), dev-mode log cleanup at {Path.GetTempPath()}/stratara-logs/{service-name}.log — the OS temp directory, so not literally /tmp on Windows or macOS.
ConfigureSerilogBootstrapLogger Sets up Log.Logger as a bootstrap logger before the host is built, so early-startup errors surface to the console.

Quick start

builder.ConfigureOpenTelemetry();
builder.ConfigureSerilog();

It deletes your development log file on start-up

In the Development environment only, configuring Serilog deletes the current log file before opening it: %TEMP%/stratara-logs/{OTEL_SERVICE_NAME}.log, where the service name falls back to Unknown when OTEL_SERVICE_NAME is unset. The intent is a clean file per debugging session rather than one that grows across dozens of restarts.

Two consequences worth knowing before they cost you an hour:

  • A crash you wanted to read is gone the moment you restart to reproduce it. Copy the file before restarting, or point the sink elsewhere for that session.
  • Two development services with no OTEL_SERVICE_NAME share Unknown.log and delete each other's. Set the variable per service.

Outside Development nothing is deleted.

Sibling packages

  • Stratara.EventSourcing.WorkerDefaults — one-stop AddBackendServices / AddXxxWorkerServices composites that wire the framework's mediator + outbox + projections + sagas stack.
  • Stratara.ServiceDefaults.AspNetCore — ASP.NET-specific extras: AddDefaultHealthChecks + MapDefaultEndpoints (/health, /alive) and ASP.NET request OTel instrumentation.

Dependencies

  • Stratara.Shared — diagnostics base (ApplicationDiagnostics.Activity.SourceName).
  • OpenTelemetry runtime + exporter packages.
  • Serilog sinks (Console, File, Async, OpenTelemetry).
  • Destructurama.Attributed for destructuring conventions.
  • Microsoft.Extensions.Http.Resilience + Microsoft.Extensions.ServiceDiscovery.

Prerelease dependencies. This package transitively pulls in two prerelease OpenTelemetry instrumentation packages that have no stable release yet: OpenTelemetry.Instrumentation.EntityFrameworkCore (beta) and RabbitMQ.Client.OpenTelemetry (RC). Both ride the stable OpenTelemetry 1.15.x core. NU5104 is suppressed in this csproj with that justification — consumers inherit the prerelease deps transitively. We will swap to GA as soon as the vendors ship stable.

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.

NuGet packages (1)

Showing the top 1 NuGet packages that depend on Stratara.ServiceDefaults:

Package Downloads
Stratara.ServiceDefaults.AspNetCore

ASP.NET Core extensions on top of Stratara.ServiceDefaults — default health checks, /health and /alive endpoints, and ASP.NET request OpenTelemetry instrumentation. Reference from every API host.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
4.0.3 38 9/3/2026
4.0.2 140 9/3/2026
4.0.1 69 9/2/2026
4.0.0 126 8/31/2026
4.0.0-preview.1 48 8/31/2026
3.4.0 100 8/28/2026
3.3.0 71 8/25/2026
3.2.3 76 8/22/2026
3.2.2 78 8/14/2026
3.2.1 431 8/2/2026
3.2.0 74 7/18/2026
3.1.7 87 7/1/2026
3.1.6 508 6/22/2026
3.1.5 87 6/22/2026
3.1.4 95 6/15/2026
3.1.3 95 6/10/2026
3.1.2 99 6/5/2026
3.1.1 175 6/1/2026
3.1.0 86 5/30/2026
3.0.23 88 5/28/2026

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.