| | | 1 | | using Elsa.Common.Multitenancy; |
| | | 2 | | using Medallion.Threading; |
| | | 3 | | using Microsoft.Extensions.DependencyInjection; |
| | | 4 | | using Microsoft.Extensions.Logging; |
| | | 5 | | |
| | | 6 | | namespace Elsa.Workflows.Runtime.Distributed; |
| | | 7 | | |
| | | 8 | | public class DistributedBookmarkQueueWorker : BookmarkQueueWorker |
| | | 9 | | { |
| | | 10 | | private readonly IDistributedLockProvider _distributedLockProvider; |
| | | 11 | | private readonly ILogger<DistributedBookmarkQueueWorker> _logger; |
| | | 12 | | |
| | | 13 | | public DistributedBookmarkQueueWorker( |
| | | 14 | | IDistributedLockProvider distributedLockProvider, |
| | | 15 | | IBookmarkQueueSignaler signaler, |
| | | 16 | | IServiceScopeFactory scopeFactory, |
| | | 17 | | ILogger<DistributedBookmarkQueueWorker> logger, |
| | | 18 | | ITenantScopeFactory? tenantScopeFactory = null, |
| | | 19 | | ITenantAccessor? tenantAccessor = null) |
| | 2 | 20 | | : this(distributedLockProvider, signaler, scopeFactory, logger, tenantScopeFactory, tenantAccessor, TimeSpan.Fro |
| | | 21 | | { |
| | 2 | 22 | | } |
| | | 23 | | |
| | | 24 | | protected DistributedBookmarkQueueWorker( |
| | | 25 | | IDistributedLockProvider distributedLockProvider, |
| | | 26 | | IBookmarkQueueSignaler signaler, |
| | | 27 | | IServiceScopeFactory scopeFactory, |
| | | 28 | | ILogger<DistributedBookmarkQueueWorker> logger, |
| | | 29 | | ITenantScopeFactory? tenantScopeFactory, |
| | | 30 | | ITenantAccessor? tenantAccessor, |
| | | 31 | | TimeSpan processThrottle) |
| | 2 | 32 | | : base(signaler, scopeFactory, logger, tenantScopeFactory, tenantAccessor, processThrottle) |
| | | 33 | | { |
| | 2 | 34 | | _distributedLockProvider = distributedLockProvider; |
| | 2 | 35 | | _logger = logger; |
| | 2 | 36 | | } |
| | | 37 | | |
| | | 38 | | internal static string GetLockName(string? tenantId) |
| | | 39 | | { |
| | 4 | 40 | | var normalized = tenantId.NormalizeTenantId(); |
| | 4 | 41 | | return string.IsNullOrEmpty(normalized) |
| | 4 | 42 | | ? nameof(DistributedBookmarkQueueWorker) |
| | 4 | 43 | | : $"{nameof(DistributedBookmarkQueueWorker)}:{normalized}"; |
| | | 44 | | } |
| | | 45 | | |
| | 0 | 46 | | protected virtual TimeSpan LockRetryDelay => TimeSpan.FromSeconds(2); |
| | | 47 | | |
| | | 48 | | protected override async Task ProcessAsync(CancellationToken cancellationToken) |
| | | 49 | | { |
| | 4 | 50 | | var lockName = GetLockName(CapturedTenantId); |
| | 4 | 51 | | await using var handle = await _distributedLockProvider.TryAcquireLockAsync(lockName, TimeSpan.Zero, cancellatio |
| | | 52 | | |
| | 3 | 53 | | if (handle == null) |
| | | 54 | | { |
| | 0 | 55 | | _logger.LogDebug("Could not acquire lock for distributed bookmark queue worker. Another application instance |
| | 0 | 56 | | await Task.Delay(LockRetryDelay, cancellationToken); |
| | 0 | 57 | | if (Signaler is BookmarkQueueSignaler bookmarkQueueSignaler) |
| | 0 | 58 | | await bookmarkQueueSignaler.TriggerAsync(CapturedTenantId, cancellationToken); |
| | | 59 | | else |
| | 0 | 60 | | await Signaler.TriggerAsync(cancellationToken); |
| | 0 | 61 | | return; |
| | | 62 | | } |
| | | 63 | | |
| | 3 | 64 | | await base.ProcessAsync(cancellationToken); |
| | 3 | 65 | | } |
| | | 66 | | } |