| | | 1 | | using Elsa.Common; |
| | | 2 | | using Elsa.Workflows.Runtime.Options; |
| | | 3 | | using Medallion.Threading; |
| | | 4 | | using Microsoft.Extensions.DependencyInjection; |
| | | 5 | | using Microsoft.Extensions.Diagnostics.HealthChecks; |
| | | 6 | | using Microsoft.Extensions.Logging; |
| | | 7 | | using Microsoft.Extensions.Options; |
| | | 8 | | |
| | | 9 | | namespace Elsa.Workflows.Runtime.HealthChecks; |
| | | 10 | | |
| | | 11 | | /// <summary> |
| | | 12 | | /// Verifies that the configured distributed lock provider can acquire and release a probe lock. |
| | | 13 | | /// </summary> |
| | 7 | 14 | | public class ElsaDistributedLockHealthCheck( |
| | 7 | 15 | | IServiceProvider serviceProvider, |
| | 7 | 16 | | IOptions<ElsaReadinessHealthCheckOptions> options, |
| | 7 | 17 | | ILogger<ElsaDistributedLockHealthCheck> logger) : IHealthCheck |
| | | 18 | | { |
| | | 19 | | /// <inheritdoc /> |
| | | 20 | | public async Task<HealthCheckResult> CheckHealthAsync(HealthCheckContext context, CancellationToken cancellationToke |
| | | 21 | | { |
| | | 22 | | try |
| | | 23 | | { |
| | 6 | 24 | | var distributedLockProvider = serviceProvider.GetService<IDistributedLockProvider>(); |
| | 6 | 25 | | if (distributedLockProvider == null) |
| | | 26 | | { |
| | 1 | 27 | | return HealthCheckResult.Degraded("Elsa distributed lock provider is not registered.", data: CreateData( |
| | | 28 | | } |
| | | 29 | | |
| | 5 | 30 | | var lockName = $"elsa-health-check-{Guid.NewGuid():N}"; |
| | 5 | 31 | | await using var handle = await distributedLockProvider.TryAcquireLockAsync(lockName, options.Value.Distribut |
| | 4 | 32 | | if (handle == null) |
| | | 33 | | { |
| | 1 | 34 | | return HealthCheckResult.Degraded("Elsa distributed lock provider was reachable, but the probe lock was |
| | | 35 | | } |
| | | 36 | | |
| | 3 | 37 | | return HealthCheckResult.Healthy("Elsa distributed lock provider is reachable.", CreateData()); |
| | 0 | 38 | | } |
| | 0 | 39 | | catch (OperationCanceledException) when (cancellationToken.IsCancellationRequested) |
| | | 40 | | { |
| | 0 | 41 | | throw; |
| | | 42 | | } |
| | 1 | 43 | | catch (Exception e) when (!e.IsFatal()) |
| | | 44 | | { |
| | 1 | 45 | | logger.LogWarning(e, "Elsa distributed lock provider is not reachable."); |
| | 1 | 46 | | return HealthCheckResult.Unhealthy("Elsa distributed lock provider is not reachable.", data: CreateData()); |
| | | 47 | | } |
| | | 48 | | |
| | 6 | 49 | | static Dictionary<string, object> CreateData() => new() |
| | 6 | 50 | | { |
| | 6 | 51 | | ["category"] = "distributed-locks" |
| | 6 | 52 | | }; |
| | 6 | 53 | | } |
| | | 54 | | } |