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Adds StorageInitialized health check (#4674)
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45 changes: 45 additions & 0 deletions
45
src/Microsoft.Health.Fhir.Api/Features/Health/StorageInitializedHealthCheck.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| // ------------------------------------------------------------------------------------------------- | ||
| // Copyright (c) Microsoft Corporation. All rights reserved. | ||
| // Licensed under the MIT License (MIT). See LICENSE in the repo root for license information. | ||
| // ------------------------------------------------------------------------------------------------- | ||
|
|
||
| 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
52
...ft.Health.Fhir.Shared.Api.UnitTests/Features/Health/StorageInitializedHealthCheckTests.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| // ------------------------------------------------------------------------------------------------- | ||
| // Copyright (c) Microsoft Corporation. All rights reserved. | ||
| // Licensed under the MIT License (MIT). See LICENSE in the repo root for license information. | ||
| // ------------------------------------------------------------------------------------------------- | ||
|
|
||
| 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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