ConnectingApps.SmartInject 2.0.2

dotnet add package ConnectingApps.SmartInject --version 2.0.2                
NuGet\Install-Package ConnectingApps.SmartInject -Version 2.0.2                
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="ConnectingApps.SmartInject" Version="2.0.2" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add ConnectingApps.SmartInject --version 2.0.2                
#r "nuget: ConnectingApps.SmartInject, 2.0.2"                
#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.
// Install ConnectingApps.SmartInject as a Cake Addin
#addin nuget:?package=ConnectingApps.SmartInject&version=2.0.2

// Install ConnectingApps.SmartInject as a Cake Tool
#tool nuget:?package=ConnectingApps.SmartInject&version=2.0.2                

Introduction

SmartInject is a NuGet package to simplify dependency injection in .NET . For example, do you know how to deal with circular depencies? You may want to consider a redesign of your application. However, there is a quicker way. Moreover, do you know how to change your health check to ensure you'll get a detailed json formatted health status instead of just Healthy or Unhealthy? With SmartInject, just a single line of code needs to be changed.

Contents

Lazy Injection

Assume we have two classes. Instances of these classes need to communicate with each other without knowing each other. You may have experienced this Exception:

System.InvalidOperationException: A circular dependency was detected for the service of type ...

To solve this problem, the code will be like this:

public class Something : ISomething
{
    private readonly Lazy<ISomethingElse> _somethingElse;
    public Something(Lazy<ISomethingElse> somethingElse)
    {
        _somethingElse = somethingElse;
    }
}

and

public class SomethingElse : ISomethingElse
{
    private readonly Lazy<ISomething> _something;
    public SomethingElse(Lazy<ISomething> something)
    {
        _something = something;
    }
}

All you need to do now is to add the collowing line of code to your Program.cs

builder.Services.AddLazySingleton<ISomething, Something>();

Alternatively, you can use AddLazyTransient or AddLazyScoped instead. Do not forget use the following namespace line:

using ConnectingApps.SmartInject;

Health Check Result in Json

When adding a health check to your .NET application, you typically get a result like Healthy after doing a request. The response is not very detailed, which can be a problem when there is something wrong.

However, instead of getting Healthy as a response, you can get a detailed json response instead:

{
    "status": "Healthy",
    "results": {
        "ExampleHealthCheck": {
            "status": "Healthy",
            "description": "Example health check is healthy",
            "data": {
            "exampleDataKey": "exampleDataValue"
            }
        }
    }
}

Achieving this is very simple. Instead of adding a health check like this:

app.MapHealthChecks("/healthz");

you'll add a health check like this:

app.MapHealthChecks("/healthz", new HealthCheckOptions
{
    ResponseWriter = HealthCheckResponseWriters.WriteJsonResponse
});

with this namespace added:

using ConnectingApps.SmartInject;
Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  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. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last updated
2.0.2 4,571 10/5/2023
2.0.1-preview 114 10/4/2023
1.0.2 318 10/3/2023
1.0.1-preview 131 10/3/2023

Initial version