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Make StartupTaskCompleted volatile (#10897)

pull/11683/head
João Paulo dos Santos Portela 2019-03-26 17:38:11 +00:00 committed by Luke Latham
parent 089bef5b3e
commit fba5bbc13e
2 changed files with 9 additions and 3 deletions
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4
aspnetcore/host-and-deploy/health-checks.md
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@ -5,7 +5,7 @@ description: Learn how to set up health checks for ASP.NET Core infrastructure,
monikerRange: '>= aspnetcore-2.2'
ms.author: riande
ms.custom: mvc
ms.date: 02/13/2019
ms.date: 03/11/2019
uid: host-and-deploy/health-checks
---
# Health checks in ASP.NET Core
@ -387,7 +387,7 @@ The readiness check usually performs a more extensive and time-consuming set of
The sample app contains a health check to report the completion of long-running startup task in a [Hosted Service](xref:fundamentals/host/hosted-services). The `StartupHostedServiceHealthCheck` exposes a property, `StartupTaskCompleted`, that the hosted service can set to `true` when its long-running task is finished (*StartupHostedServiceHealthCheck.cs*):
[!code-csharp[](health-checks/samples/2.x/HealthChecksSample/StartupHostedServiceHealthCheck.cs?name=snippet1&highlight=5)]
[!code-csharp[](health-checks/samples/2.x/HealthChecksSample/StartupHostedServiceHealthCheck.cs?name=snippet1&highlight=7-11)]
The long-running background task is started by a [Hosted Service](xref:fundamentals/host/hosted-services) (*Services/StartupHostedService*). At the conclusion of the task, `StartupHostedServiceHealthCheck.StartupTaskCompleted` is set to `true`:

8
aspnetcore/host-and-deploy/health-checks/samples/2.x/HealthChecksSample/StartupHostedServiceHealthCheck.cs
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@ -11,9 +11,15 @@ namespace SampleApp
#region snippet1
public class StartupHostedServiceHealthCheck : IHealthCheck
{
private volatile bool _startupTaskCompleted = false;
public string Name => "slow_dependency_check";
public bool StartupTaskCompleted { get; set; } = false;
public bool StartupTaskCompleted
{
get => _startupTaskCompleted;
set => _startupTaskCompleted = value;
}
public Task<HealthCheckResult> CheckHealthAsync(
HealthCheckContext context,