Pdsr HealthChecks Libraries

Contains HealthChecks for OpenId-Connect, RedisCacheManager, Postgres, and RabbitMQ.

Getting Started

Health checks need to register in the DI container.

Redis Healthcheck

In the minimal API, use builder.Services to add the extension method, AddRedisCacheManager to IHealthChecksBuilder.

var degradedThreshold = 50;     // in milliseconds, response time higher than 50 will be considered degraded
var unhealthyThreshold = 100;   // in milliseconds, response time higher than 100 will be considered unhealthy
builder.Services.AddHealthChecks()
    .AddRedisCacheManager(degradedThreshold,unhealthyThreshold);

Memory HealthCheck

You can define a memory usage limit for the MemoryHealthCheck

In the minimal API, use builder.Services to add the extension method, AddMemoryHealthCheck to IHealthChecksBuilder

builder.Services.AddHealthChecks()
    .AddMemoryHealthCheck(
        degradedThreshold: 50 * 1024L * 1024L,      // shows degraded at this 50 MB
        unhealthyThreshold: 100 * 2048L * 2048L,    // threshold to show failureStatus (unhealthy), 100MB
        failureStatus: HealthStatus.Unhealthy,      // default failure status is HealthStatus.Unhealthy
        tags: new string[] { "memory", "ram" });    // optional tags

Health Publisher

The interface ISystemHealth and the abstract class SystemHealthBase are available to be used as publisher.

you need to inherit from SystemHealthBase:

public class MyHealthStatus : SystemHealthBase
{
    // some custom properties
}

Register in DI container

builder.Services.RegisterReadinessPublisher<MyHealthStatus>();

The instance of MyHealthStatus is available through injection.

public class SomeService : ISomeService
{
    private readonly MySystemHealth _mySystemHealth;
    public SomeService(MySystemHealth mySystemHealth)
    {
        _mySystemHealth = _mySystemHealth;
    }

    public void SomeMethod()
    {
        var health = _mySystemHealth.HealthReport;
        // do whatever you like with that health status.
    }
}

Samples

Refer to the samples folder.