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Add db health check

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This commit is contained in:
crobibero 2020-09-03 09:26:22 -06:00
parent 3711a1978e
commit d6594a8a70
3 changed files with 44 additions and 1 deletions
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36
Jellyfin.Server/HealthChecks/JellyfinDbHealthCheck.cs Normal file
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@ -0,0 +1,36 @@
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Server.Implementations;
using Microsoft.Extensions.Diagnostics.HealthChecks;
namespace Jellyfin.Server.HealthChecks
{
/// <summary>
/// Checks connectivity to the database.
/// </summary>
public class JellyfinDbHealthCheck : IHealthCheck
{
private readonly JellyfinDbProvider _dbProvider;
/// <summary>
/// Initializes a new instance of the <see cref="JellyfinDbHealthCheck"/> class.
/// </summary>
/// <param name="dbProvider">The jellyfin db provider.</param>
public JellyfinDbHealthCheck(JellyfinDbProvider dbProvider)
{
_dbProvider = dbProvider;
}
/// <inheritdoc />
public async Task<HealthCheckResult> CheckHealthAsync(HealthCheckContext context, CancellationToken cancellationToken = default)
{
await using var jellyfinDb = _dbProvider.CreateContext();
if (await jellyfinDb.Database.CanConnectAsync(cancellationToken).ConfigureAwait(false))
{
return HealthCheckResult.Healthy("Database connection successful.");
}
return HealthCheckResult.Unhealthy("Unable to connect to the database.");
}
}
}

1
Jellyfin.Server/Jellyfin.Server.csproj
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@ -43,6 +43,7 @@
<PackageReference Include="CommandLineParser" Version="2.8.0" />
<PackageReference Include="Microsoft.Extensions.Configuration.EnvironmentVariables" Version="3.1.6" />
<PackageReference Include="Microsoft.Extensions.Configuration.Json" Version="3.1.6" />
<PackageReference Include="Microsoft.Extensions.Diagnostics.HealthChecks" Version="3.1.7" />
<PackageReference Include="prometheus-net" Version="3.6.0" />
<PackageReference Include="prometheus-net.AspNetCore" Version="3.6.0" />
<PackageReference Include="Serilog.AspNetCore" Version="3.4.0" />

8
Jellyfin.Server/Startup.cs
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@ -1,11 +1,12 @@
using System;
using System.ComponentModel;
using System.Data.OleDb;
using System.Net.Http.Headers;
using Jellyfin.Api.TypeConverters;
using Jellyfin.Server.Extensions;
using Jellyfin.Server.HealthChecks;
using Jellyfin.Server.Middleware;
using Jellyfin.Server.Models;
using MediaBrowser.Common;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller;
using MediaBrowser.Controller.Configuration;
@ -77,6 +78,9 @@ namespace Jellyfin.Server
c.DefaultRequestHeaders.UserAgent.Add(new ProductInfoHeaderValue($"({_serverApplicationHost.ApplicationUserAgentAddress})"));
})
.ConfigurePrimaryHttpMessageHandler(x => new DefaultHttpClientHandler());
services.AddHealthChecks()
.AddCheck<JellyfinDbHealthCheck>("JellyfinDb");
}
/// <summary>
@ -132,6 +136,8 @@ namespace Jellyfin.Server
{
endpoints.MapMetrics(_serverConfigurationManager.Configuration.BaseUrl.TrimStart('/') + "/metrics");
}
endpoints.MapHealthChecks(_serverConfigurationManager.Configuration.BaseUrl.TrimStart('/') + "/health");
});
// Add type descriptor for legacy datetime parsing.