/// <summary>
/// Registers a health check on the process confirming that the current amount of physical memory is below the
/// threshold.
/// </summary>
/// <param name="registry">The health check registry where the health check is registered.</param>
/// <param name="name">The name of the health check.</param>
/// <param name="thresholdBytes">The physical memory threshold in bytes.</param>
/// <returns>The health check registry instance</returns>
public static IHealthCheckRegistry AddProcessPhysicalMemoryCheck(this IHealthCheckRegistry registry, string name, long thresholdBytes)
{
registry.Register(
name,
() =>
{
var currentSize = Process.GetCurrentProcess().WorkingSet64;
return(new ValueTask <HealthCheckResult>(
currentSize <= thresholdBytes
? HealthCheckResult.Healthy($"OK. {thresholdBytes} bytes")
: HealthCheckResult.Unhealthy($"FAILED. {currentSize} > {thresholdBytes}")));
});
return(registry);
}
public static IHealthCheckRegistry AddPingCheck(
this IHealthCheckRegistry registry,
string name,
string host,
TimeSpan timeout)
{
registry.Register(
name,
async() =>
{
var ping = new Ping();
var result = await ping.SendPingAsync(host, (int)timeout.TotalMilliseconds).ConfigureAwait(false);
return(result.Status == IPStatus.Success
? HealthCheckResult.Healthy($"OK. {host}")
: HealthCheckResult.Unhealthy($"FAILED. {host} ping result was {result.Status}"));
});
return(registry);
}
public static IHealthCheckRegistry AddHttpGetCheck(
this IHealthCheckRegistry registry,
string name,
Uri uri,
TimeSpan timeout)
{
registry.Register(
name,
async cancellationToken =>
{
using (var tokenWithTimeout = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken))
{
tokenWithTimeout.CancelAfter(timeout);
var response = await HttpClient.GetAsync(uri, tokenWithTimeout.Token).ConfigureAwait(false);
return(response.IsSuccessStatusCode
? HealthCheckResult.Healthy($"OK. {uri}")
: HealthCheckResult.Unhealthy($"FAILED. {uri} status code was {response.StatusCode}"));
}
});
return(registry);
}
/// <summary>
/// Initializes a new instance of the <see cref="DefaultHealthProvider" /> class.
/// </summary>
/// <param name="logger">The logger.</param>
/// <param name="healthCheckRegistry">The health check registry.</param>
public DefaultHealthProvider(ILogger <DefaultHealthProvider> logger, IHealthCheckRegistry healthCheckRegistry)
{
_logger = logger;
_healthCheckRegistry = healthCheckRegistry;
}
#pragma warning disable SA1008, SA1009
internal static ValueTask <HealthCheckResult> PerformCheck <T>(
this IHealthCheckRegistry registry,
Func <T, (string message, bool result)> passing,
