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Adds StorageInitialized health check (#4674)
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45 changes: 45 additions & 0 deletions
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src/Microsoft.Health.Fhir.Api/Features/Health/StorageInitializedHealthCheck.cs
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// ------------------------------------------------------------------------------------------------- | ||
// Copyright (c) Microsoft Corporation. All rights reserved. | ||
// Licensed under the MIT License (MIT). See LICENSE in the repo root for license information. | ||
// ------------------------------------------------------------------------------------------------- | ||
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using System; | ||
using System.Threading; | ||
using System.Threading.Tasks; | ||
using MediatR; | ||
using Microsoft.Extensions.Diagnostics.HealthChecks; | ||
using Microsoft.Health.Core; | ||
using Microsoft.Health.Fhir.Core.Extensions; | ||
using Microsoft.Health.Fhir.Core.Messages.Storage; | ||
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namespace Microsoft.Health.Fhir.Api.Features.Health | ||
{ | ||
public class StorageInitializedHealthCheck : IHealthCheck, INotificationHandler<StorageInitializedNotification> | ||
{ | ||
private const string SuccessfullyInitializedMessage = "Successfully initialized."; | ||
private bool _storageReady; | ||
private readonly DateTimeOffset _started = Clock.UtcNow; | ||
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public Task<HealthCheckResult> CheckHealthAsync(HealthCheckContext context, CancellationToken cancellationToken = default) | ||
{ | ||
if (_storageReady) | ||
{ | ||
return Task.FromResult(HealthCheckResult.Healthy(SuccessfullyInitializedMessage)); | ||
} | ||
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TimeSpan waited = Clock.UtcNow - _started; | ||
if (waited < TimeSpan.FromMinutes(5)) | ||
{ | ||
return Task.FromResult(new HealthCheckResult(HealthStatus.Degraded, $"Storage is initializing. Waited: {(int)waited.TotalSeconds}s.")); | ||
} | ||
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return Task.FromResult(new HealthCheckResult(HealthStatus.Unhealthy, $"Storage has not been initialized. Waited: {(int)waited.TotalSeconds}s.")); | ||
} | ||
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public Task Handle(StorageInitializedNotification notification, CancellationToken cancellationToken) | ||
{ | ||
_storageReady = true; | ||
return Task.CompletedTask; | ||
} | ||
} | ||
} |
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52 changes: 52 additions & 0 deletions
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...ft.Health.Fhir.Shared.Api.UnitTests/Features/Health/StorageInitializedHealthCheckTests.cs
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// ------------------------------------------------------------------------------------------------- | ||
// Copyright (c) Microsoft Corporation. All rights reserved. | ||
// Licensed under the MIT License (MIT). See LICENSE in the repo root for license information. | ||
// ------------------------------------------------------------------------------------------------- | ||
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using System; | ||
using System.Threading; | ||
using System.Threading.Tasks; | ||
using Microsoft.Extensions.Diagnostics.HealthChecks; | ||
using Microsoft.Health.Fhir.Core.Extensions; | ||
using Microsoft.Health.Fhir.Core.Messages.Storage; | ||
using Microsoft.Health.Fhir.Tests.Common; | ||
using Microsoft.Health.Test.Utilities; | ||
using Xunit; | ||
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namespace Microsoft.Health.Fhir.Api.Features.Health; | ||
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[Trait(Traits.OwningTeam, OwningTeam.Fhir)] | ||
[Trait(Traits.Category, Categories.DataSourceValidation)] | ||
public class StorageInitializedHealthCheckTests | ||
{ | ||
private readonly StorageInitializedHealthCheck _sut = new(); | ||
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[Fact] | ||
public async Task GivenStorageInitialized_WhenCheckHealthAsync_ThenReturnsHealthy() | ||
{ | ||
await _sut.Handle(new StorageInitializedNotification(), CancellationToken.None); | ||
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HealthCheckResult result = await _sut.CheckHealthAsync(new HealthCheckContext(), CancellationToken.None); | ||
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Assert.Equal(HealthStatus.Healthy, result.Status); | ||
} | ||
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[Fact] | ||
public async Task GivenStorageInitializedHealthCheck_WhenCheckHealthAsync_ThenStartsAsDegraded() | ||
{ | ||
HealthCheckResult result = await _sut.CheckHealthAsync(new HealthCheckContext(), CancellationToken.None); | ||
Assert.Equal(HealthStatus.Degraded, result.Status); | ||
} | ||
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#if NET8_0_OR_GREATER | ||
[Fact] | ||
public async Task GivenStorageInitializedHealthCheck_WhenCheckHealthAsync_ThenChangedToUnhealthyAfter5Minute() | ||
{ | ||
using (Mock.Property(() => ClockResolver.TimeProvider, new Microsoft.Extensions.Time.Testing.FakeTimeProvider(DateTimeOffset.Now.AddMinutes(5).AddSeconds(1)))) | ||
{ | ||
HealthCheckResult result = await _sut.CheckHealthAsync(new HealthCheckContext(), CancellationToken.None); | ||
Assert.Equal(HealthStatus.Unhealthy, result.Status); | ||
} | ||
} | ||
#endif | ||
} |
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