FluxFlow.Components.Observability 2.0.0

.NET 8.0 This package targets .NET 8.0. The package is compatible with this framework or higher.
There is a newer version of this package available.
See the version list below for details. 
dotnet add package FluxFlow.Components.Observability --version 2.0.0
                    


                    

                
NuGet\Install-Package FluxFlow.Components.Observability -Version 2.0.0
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="FluxFlow.Components.Observability" Version="2.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="FluxFlow.Components.Observability" Version="2.0.0" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="FluxFlow.Components.Observability" />
                    


                            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 FluxFlow.Components.Observability --version 2.0.0
                    


                    

                
#r "nuget: FluxFlow.Components.Observability, 2.0.0"
#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 FluxFlow.Components.Observability@2.0.0
#: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=FluxFlow.Components.Observability&version=2.0.0
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=FluxFlow.Components.Observability&version=2.0.0
                    


                            Install as a Cake Tool

FluxFlow.Components.Observability

Reusable observer components for FluxFlow.

Nodes

Node type Shape Purpose
flow.counter Input → Snapshots Counts matching inputs and emits counter snapshots.
flow.logger Input → Entries Emits structured log entries from inputs.
flow.metrics Input → Snapshots Emits count, rate, timestamp, and optional size snapshots.

The package emits neutral contracts only. Hosts decide whether those entries or snapshots become app logs, dashboards, files, telemetry, or test assertions.

Counter

{
  "type": "flow.counter",
  "inputType": "message",
  "name": "received",
  "predicate": "value.Enabled",
  "engine": "default",
  "boundedCapacity": 128
}

flow.counter emits FlowCounterSnapshot values with count, rejected count, last observed timestamp, name, and input type. When no predicate is configured, all inputs are counted.

Logger

{
  "type": "flow.logger",
  "inputType": "message",
  "level": "Information",
  "category": "workflow",
  "messageTemplate": "Observed {kind} item #{sequence}",
  "attributeSelectors": [ "kind", "size" ],
  "boundedCapacity": 128
}

flow.logger emits FlowLogEntry values. Hosts register selector functions for custom attributes. Built-in selectors input and value return the original input.

Metrics

{
  "type": "flow.metrics",
  "inputType": "message",
  "name": "received",
  "sizeSelector": "payloadBytes",
  "boundedCapacity": 128
}

flow.metrics emits FlowMetricSnapshot values with total count, current rate, average rate, last observed timestamp, and optional size values. Size selectors can return numeric values, strings, byte arrays, or collections.

Registration

registry.RegisterObservabilityComponents(options => options
    .UseClock(timeProvider)
    .RegisterType<MyMessage>("message")
    .UseValueSelector<MyMessage>("kind", (message, _) => message.Kind)
    .UseValueSelector<MyMessage>("payloadBytes", (message, _) => message.Payload.Length));

UseClock(...) is optional. Without it, observer nodes use TimeProvider.System. Supplying a time provider lets hosts and tests make log entry timestamps, counter snapshots, metrics snapshots, and rate calculations deterministic.

Register an expression engine only when using counter predicates:

registry.RegisterObservabilityComponents(options => options
    .UseExpressionEngine(expressionEngine)
    .RegisterType<MyMessage>("message"));

Design Metadata

This package exposes a package-owned IComponentDesignMetadataProvider for its node types. Hosts can compose it through ComponentDesignMetadataCatalog to populate palettes, editors, validation views, and documentation without duplicating package descriptors.

Composition Guidance

Use this package as one part of a host-composed graph. See Component Composition for recommended host boundaries, package boundaries, and extraction timing.

Product Compatible and additional computed target framework versions.
.NET net8.0 is compatible.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed.  net9.0 was computed.  net9.0-android was computed.  net9.0-browser was computed.  net9.0-ios was computed.  net9.0-maccatalyst was computed.  net9.0-macos was computed.  net9.0-tvos was computed.  net9.0-windows was computed.  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 FluxFlow.Components.Observability:

Package Downloads
FluxFlow.Components.Observability.Composition

Typed observability registration and Designer metadata over host-owned expression, selector, context, and clock resources.

GitHub repositories

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Version Downloads Last Updated
8.0.0-rc.1 90 9/5/2026
7.0.0 196 8/3/2026
3.0.2 128 7/3/2026
3.0.1 172 7/2/2026
3.0.0 117 6/19/2026
2.0.0 140 6/18/2026
1.2.1 127 6/15/2026
1.2.0 434 6/12/2026
1.1.0 119 6/5/2026
1.0.0 121 6/4/2026
0.3.0-alpha.1 242 6/2/2026
0.2.0-alpha.1 78 6/2/2026
0.1.1-alpha.1 77 6/2/2026
0.1.0-alpha.1 133 6/1/2026

2.0 preview: flow.counter now receives a predicate compiled once in the factory instead of evaluating an expression string per message; the node no longer holds the expression engine or context factory. Internal refactor, no runtime behavior change. Replaces the bespoke IObservabilityClock abstraction with System.TimeProvider (UseClock now takes a TimeProvider; the old clock interface/implementation are removed).