/// <summary>
/// Add a health check for single uri.
/// </summary>
/// <param name="builder">The <see cref="IHealthChecksBuilder"/>.</param>
/// <param name="uri">The uri to check.</param>
/// <param name="name">The health check name. Optional. If <c>null</c> the type name 'uri-group' will be used for the name.</param>
/// <param name="failureStatus">
/// The <see cref="HealthStatus"/> that should be reported when the health check fails. Optional. If <c>null</c> then
/// the default status of <see cref="HealthStatus.Unhealthy"/> will be reported.
/// </param>
/// <param name="tags">A list of tags that can be used to filter sets of health checks. Optional.</param>
/// <returns>The <see cref="IHealthChecksBuilder"/>.</returns></param>
public static IHealthChecksBuilder AddUrlGroup(this IHealthChecksBuilder builder, Uri uri, string name = default, HealthStatus?failureStatus = default, IEnumerable <string> tags = default)
{
var options = new UriHealthCheckOptions();
options.AddUri(uri);
return(builder.Add(new HealthCheckRegistration(
name ?? NAME,
sp => new UriHealthCheck(options),
failureStatus,
tags)));
}
/// <summary>
/// Add a health check for single uri.
/// </summary>
/// <param name="builder">The <see cref="IHealthChecksBuilder"/>.</param>
/// <param name="uri">The uri to check.</param>
/// <param name="name">The health check name. Optional. If <c>null</c> the type name 'uri-group' will be used for the name.</param>
/// <param name="failureStatus">
/// The <see cref="HealthStatus"/> that should be reported when the health check fails. Optional. If <c>null</c> then
/// the default status of <see cref="HealthStatus.Unhealthy"/> will be reported.
/// </param>
/// <param name="tags">A list of tags that can be used to filter sets of health checks. Optional.</param>
/// <returns>The <see cref="IHealthChecksBuilder"/>.</returns></param>
public static IHealthChecksBuilder AddUrlGroup(this IHealthChecksBuilder builder, Uri uri, string name = default, HealthStatus?failureStatus = default, IEnumerable <string> tags = default)
{
builder.Services.AddHttpClient();
var options = new UriHealthCheckOptions();
options.AddUri(uri);
var registrationName = name ?? NAME;
return(builder.Add(new HealthCheckRegistration(
registrationName,
sp => CreateHealthCheck(sp, registrationName, options),
failureStatus,
tags)));
}
private static UriHealthCheck CreateHealthCheck <T>(IServiceProvider sp, string route)
where T : ServiceDiscoveryClient
{
var serviceClient = sp.GetRequiredService <T>();
if (serviceClient == null)
{
throw new NaosException($"Health: ServiceDiscovery client '{typeof(T)}' not found, please add with service.AddHttpClient<ServiceDiscoveryProxy>()");
}
var options = new UriHealthCheckOptions();
var address = serviceClient.HttpClient?.BaseAddress?.ToString(); //.SubstringTill("servicediscovery");
if (address.IsNullOrEmpty())
{
throw new NaosException($"Health: ServiceDiscovery client '{typeof(T)}' address not found, registration inactive (due to health) or missing from registry?");
}
options.AddUri(new Uri(new Uri(address), route));
return(new UriHealthCheck(options, () => serviceClient.HttpClient));
}