Stratara.ServiceDefaults
4.3.1
Prefix Reserved
dotnet add package Stratara.ServiceDefaults --version 4.3.1
NuGet\Install-Package Stratara.ServiceDefaults -Version 4.3.1
<PackageReference Include="Stratara.ServiceDefaults" Version="4.3.1" />
<PackageVersion Include="Stratara.ServiceDefaults" Version="4.3.1" />
<PackageReference Include="Stratara.ServiceDefaults" />
paket add Stratara.ServiceDefaults --version 4.3.1
#r "nuget: Stratara.ServiceDefaults, 4.3.1"
#:package Stratara.ServiceDefaults@4.3.1
#addin nuget:?package=Stratara.ServiceDefaults&version=4.3.1
#tool nuget:?package=Stratara.ServiceDefaults&version=4.3.1
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 (>= 4.3.1)
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 |
|---|---|---|
| 4.3.1 | 52 | 9/25/2026 |
| 4.3.0 | 224 | 9/23/2026 |
| 4.2.0 | 107 | 9/18/2026 |
| 4.1.1 | 71 | 9/16/2026 |
| 4.1.0 | 65 | 9/16/2026 |
| 4.0.4 | 795 | 9/14/2026 |
| 4.0.3 | 80 | 9/3/2026 |
| 4.0.2 | 571 | 9/3/2026 |
| 4.0.1 | 225 | 9/2/2026 |
| 4.0.0 | 156 | 8/31/2026 |
| 4.0.0-preview.1 | 68 | 8/31/2026 |
| 3.4.0 | 111 | 8/28/2026 |
| 3.3.0 | 84 | 8/25/2026 |
| 3.2.3 | 92 | 8/22/2026 |
| 3.2.2 | 93 | 8/14/2026 |
| 3.2.1 | 438 | 8/2/2026 |
| 3.2.0 | 82 | 7/18/2026 |
| 3.1.7 | 93 | 7/1/2026 |
| 3.1.6 | 511 | 6/22/2026 |
| 3.1.5 | 89 | 6/22/2026 |
A correctness release. A projection replay could apply a stream's later fact before its first and
then fail on every attempt, leaving the read models it had emptied empty; the two backfills that
prepare existing history for the Orleans execution model's commit-order readers took the same wrong
order. Beyond that, the setting store no longer needs declared settings, and a setting or permission
vocabulary can be declared in parts.
**Upgrading:**
- **If you replay projections, upgrade.** A store in which one save appended several versions of a
stream can hold sequence numbers that run against those versions, and a replay over it could not
complete. No entry is rewritten and no migration is needed.
- **If you implement `IEventStreamRepository` yourself,** override
`GetManyAfterSequenceInStreamOrderAsync` to give your replay the same guarantee; the default keeps
sequence order.
- **If you backfilled a store for a commit-order reader before this release,** the Orleans migration
guide gives the query that tells whether that history holds a stream out of version order, and how
to repair it.
- **A host that declared an empty `SettingCatalog` as a workaround can drop it.** A host that
registers a catalog through a factory and then calls `AddSettingCatalog` or `AddPermissionCatalog`
now fails at registration instead of replacing that catalog.
- No schema change.
### Added
- **`IEventStreamRepository.GetManyAfterSequenceInStreamOrderAsync`**: a range of the store in the order a
replay applies it — each stream's entries in version order, the streams interleaved as their sequence numbers
interleave them, and the range extended until it no longer ends between two versions of one stream. The default
implementation returns `GetManyAfterSequenceAsync`, sequence order, so a repository of your own compiles and
behaves as before; override the member to give your replay the guarantee.
### Fixed
- **A projection replay applies each stream in version order.** A save does not number its entries in version
order — EF Core chooses the statement order and the identity column numbers the rows as they arrive — and the
replay walked the store by sequence number, so it met a stream's later fact before its first. A projection that
reports a missing preceding fact then failed the batch on every attempt, and because a replay empties the read
models first, each attempt left the read side empty. On a store where many saves wrote several versions of one
stream, no replay could complete. The replay now reads through the new repository member; a batch can hold more
entries than `Projections:BatchSize`. No entry is rewritten and no migration is needed.
- **Both commit-order backfills keep each stream in version order.** `CommitTransactionIdBackfill` could end a
batch between two versions of one stream, stamping the later one with the earlier transaction.
`PartitionCounterBackfill` handed out positions in sequence order, so every save it positioned that the store
had numbered against its versions was read inverted by the portable reader. Both now extend a batch until it no
longer ends inside a stream, and the portable backfill positions each stream's entries in version order.
History backfilled with an earlier version is not revisited, because checkpoints stand on its commit records and
positions; the Orleans migration guide gives the query that tells whether a store holds such a stream.
- **The setting store works without declared settings.** `AddSettingStore<TContext>()` and
`AddSettingStoreFromContextFactory<TContext>()` resolved the `SettingCatalog` inside a factory, so a
host that registered the store and `AddStrataraErasure()` but declared no settings built, passed
`ValidateOnBuild` and every start-up check, and failed on its first erasure with *No service for type
`SettingCatalog` has been registered*. The store now registers an empty catalog when none is declared:
the store works, erasure included, and reading any setting through `ISettingProvider` fails as
undeclared. The example on `AddStrataraErasure` was exactly that composition. A host that declared an
empty catalog as a workaround can drop it.
- **A second `AddSettingCatalog` or `AddPermissionCatalog` call no longer replaces the first.** Each
call registered a new catalog and the last one won, so a host declaring its vocabulary per module kept
only the last module's — the others' settings failed as undeclared and their permissions were denied
without a word. Every call now adds to the one registered catalog, in whichever order it runs relative
to the setting store. A setting name declared in two parts throws as a duplicate; a redeclared
permission has no effect and grants to one role accumulate. A catalog registered as a factory cannot be
added to, and the next call now throws `InvalidOperationException` saying so instead of replacing it.