Stratara.ServiceDefaults
4.0.1
Prefix Reserved
dotnet add package Stratara.ServiceDefaults --version 4.0.1
NuGet\Install-Package Stratara.ServiceDefaults -Version 4.0.1
<PackageReference Include="Stratara.ServiceDefaults" Version="4.0.1" />
<PackageVersion Include="Stratara.ServiceDefaults" Version="4.0.1" />
<PackageReference Include="Stratara.ServiceDefaults" />
paket add Stratara.ServiceDefaults --version 4.0.1
#r "nuget: Stratara.ServiceDefaults, 4.0.1"
#:package Stratara.ServiceDefaults@4.0.1
#addin nuget:?package=Stratara.ServiceDefaults&version=4.0.1
#tool nuget:?package=Stratara.ServiceDefaults&version=4.0.1
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_NAMEshareUnknown.logand delete each other's. Set the variable per service.
Outside Development nothing is deleted.
Sibling packages
Stratara.EventSourcing.WorkerDefaults— one-stopAddBackendServices/AddXxxWorkerServicescomposites 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.Attributedfor 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) andRabbitMQ.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 | Versions 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. |
-
net10.0
- Destructurama.Attributed (>= 5.3.0)
- Microsoft.Extensions.Http.Resilience (>= 10.9.0)
- Microsoft.Extensions.ServiceDiscovery (>= 10.9.0)
- OpenTelemetry.Exporter.OpenTelemetryProtocol (>= 1.18.0)
- OpenTelemetry.Extensions.Hosting (>= 1.18.0)
- OpenTelemetry.Instrumentation.EntityFrameworkCore (>= 1.18.0-beta.1)
- OpenTelemetry.Instrumentation.Http (>= 1.18.0)
- OpenTelemetry.Instrumentation.Runtime (>= 1.18.0)
- RabbitMQ.Client.OpenTelemetry (>= 1.0.0-rc.2)
- Serilog.Extensions.Hosting (>= 10.0.0)
- Serilog.Formatting.Compact (>= 3.0.0)
- Serilog.Settings.Configuration (>= 10.0.1)
- Serilog.Sinks.Async (>= 2.1.0)
- Serilog.Sinks.Console (>= 6.1.1)
- Serilog.Sinks.File (>= 7.0.0)
- Serilog.Sinks.OpenTelemetry (>= 4.2.0)
- Stratara.Shared (>= 4.0.1)
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 |
|---|---|---|
| 4.0.1 | 44 | 9/2/2026 |
| 4.0.0 | 112 | 8/31/2026 |
| 4.0.0-preview.1 | 43 | 8/31/2026 |
| 3.4.0 | 93 | 8/28/2026 |
| 3.3.0 | 68 | 8/25/2026 |
| 3.2.3 | 73 | 8/22/2026 |
| 3.2.2 | 76 | 8/14/2026 |
| 3.2.1 | 428 | 8/2/2026 |
| 3.2.0 | 72 | 7/18/2026 |
| 3.1.7 | 86 | 7/1/2026 |
| 3.1.6 | 506 | 6/22/2026 |
| 3.1.5 | 84 | 6/22/2026 |
| 3.1.4 | 94 | 6/15/2026 |
| 3.1.3 | 94 | 6/10/2026 |
| 3.1.2 | 98 | 6/5/2026 |
| 3.1.1 | 174 | 6/1/2026 |
| 3.1.0 | 86 | 5/30/2026 |
| 3.0.23 | 87 | 5/28/2026 |
### Added
- **Bundles about one aggregate are now applied one at a time within a process, a handler can say
"not yet", and the workers' parallelism is configurable.** The projection worker and the saga
worker open one consumer per processor on a shared queue, so two bundles published milliseconds
apart — the fact that creates an entity and the first fact about it — landed on two consumers and
ran at the same time, and whichever finished first won. A projection that then found no row for
the follow-up could only warn and acknowledge a fact it never applied, or throw and have the
bundle discarded; either way the read model lost the fact until a replay. The command worker has
never had this problem, because it takes a per-aggregate lock before it runs a command.
Both workers now take the same lock, keyed on the streams the bundle's events belong to. Bundles
about different aggregates still run in parallel; bundles about one aggregate queue behind each
other. The guarantee is per process — two replicas consuming the same subscription do not
serialise against each other — and the delivery guarantee now says so explicitly.
The lock serialises but does not order, so the residual case gets a second chance:
`PrecedingFactMissingException(streamId, eventTypeName)` in `Stratara.Abstractions` is the one
exception the workers retry — five attempts from 100 ms doubling, about three seconds in all,
under the new named policy `ResilienceNames.PrecedingFact`, with every aggregate lock released
between attempts so the creating fact can land in the gap. Once the retries are exhausted the
bundle fails as any unhandled failure does, and the warning logged on each attempt
(`104_010` for projections, `110_005` for sagas) names the stream and the event type. Any other
exception fails the bundle on the first attempt, as before.
`Projections:DegreeOfParallelism` and `Sagas:DegreeOfParallelism` set the number of consumers each
worker opens; a value that is not a positive number means the processor count, and `1` gives a
worker that applies every bundle in the order the transport delivers it.
A consumer that changes nothing gets the serialisation and the default parallelism it had. A
consumer that implements `IMessageBus` itself is unaffected: the retry runs inside the worker
before the transport sees an outcome. `BucketLockPool`, previously internal to the mediator, is
now public in `Stratara.Abstractions` so that every worker takes the same lock from the same
place; the mediator's own copy is gone.
### Changed
- **A published version now announces itself in the repository.** The release workflow gained a
third job that creates the GitHub release entry for the tag once the packages have reached
nuget.org, with the changelog section for that version as its notes — the same section the
packages already carry as their release notes. A prerelease tag is marked as one, so it does not
displace the current stable version. Until now the release list was maintained by hand and had
fallen behind: 4.0.0 was on nuget.org while the repository still presented 3.4.0 as current.
Nothing about what publishes, when, or on whose approval has changed.