configure Redis cache and distributed locks

2026-10-10 16:51:15 +03:30
parent f4dba6874c
commit 18e91d0b18
9 changed files with 2465 additions and 64 deletions
@@ -0,0 +1,44 @@
+using Elsa.Workflows.Runtime.Features;
+using Medallion.Threading.Redis;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using StackExchange.Redis;
+
+namespace Caspian.WorkflowFramework.Config;
+
+internal static class WorkflowRuntimeFeatureExtensions
+{
+    internal static void UseConfiguredDistributedLocking(this WorkflowRuntimeFeature runtime, IConfiguration configuration)
+    {
+        var legacySettings = configuration.GetSection("Runtime:DistributedLocking");
+        var settings = configuration.GetSection("Workflow:Runtime:DistributedLocking");
+        runtime.DistributedLockingOptions = options =>
+        {
+            legacySettings.Bind(options);
+            settings.Bind(options);
+        };
+
+        var providerName = settings["Provider"] ?? legacySettings["Provider"];
+        switch (providerName?.ToUpperInvariant())
+        {
+            case "REDIS":
+            {
+                var database = settings.GetValue<int?>("Database")
+                    ?? legacySettings.GetValue<int?>("Database")
+                    ?? configuration.GetValue<int?>("Redis:Database") ?? -1;
+                var prefix = settings["KeyPrefix"] ?? legacySettings["KeyPrefix"] ?? "nextbank:workflow:locks:";
+                if (database < -1) throw new InvalidOperationException("Workflow lock database must be -1 or a non-negative number.");
+                if (string.IsNullOrWhiteSpace(prefix)) throw new InvalidOperationException("Workflow lock KeyPrefix must not be empty.");
+                runtime.DistributedLockProvider = sp => new PrefixedDistributedLockProvider(
+                    new RedisDistributedSynchronizationProvider(sp.GetRequiredService<IConnectionMultiplexer>().GetDatabase(database)), prefix);
+                break;
+            }
+            case null:
+            case "":
+            case "FILE":
+                break;
+            default:
+                throw new InvalidOperationException($"Unsupported workflow lock provider '{providerName}'. Configure File or Redis.");
+        }
+    }
+}