server/generator/Generate.cs

@@ -0,0 +1,81 @@
+using System.Threading;
+using System;
+using System.Threading.Tasks;
+using Microsoft.Extensions.Logging;
+using Sockeye.Biz;
+using Sockeye.Util;
+
+namespace Sockeye.Generator
+{
+    //Implemented from a example here
+    //https://docs.microsoft.com/en-us/dotnet/standard/microservices-architecture/multi-container-microservice-net-applications/background-tasks-with-ihostedservice
+
+    /*
+    LOOKAT: Generator tasks that should happen:
+    - Periodically erase any temp files written to userfiles root (attachments temp files) that are older than a day
+        - These files should be normally erased within seconds after uploading and processing into their permanent folder but shit will go wrong
+     */
+
+    public class GeneratorService : BackgroundService
+    {
+        private readonly ILogger<GeneratorService> log;
+        // private const int MAXIMUM_MS_ALLOWED_FOR_PROCESSING_ALL_JOBS = 1 * 60 * 1000;//1 minutes TEST TEST TEST #####
+// #if (DEBUG)
+//         private const int GENERATE_SECONDS = 1;
+// #else
+//         private const int GENERATE_SECONDS = 20;
+// #endif
+
+
+
+
+        public GeneratorService(ILogger<GeneratorService> logger)
+        {
+            log = logger;
+        }
+
+
+        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+        {
+
+            log.LogInformation($"GeneratorService is starting.");
+
+            stoppingToken.Register(() =>
+                    log.LogDebug($" GeneratorService background task is stopping."));
+
+
+            while (!stoppingToken.IsCancellationRequested)
+            {
+                if (!ServerGlobalOpsSettingsCache.BOOTING)
+                {
+                   // log.LogTrace($"GeneratorService running jobs");
+
+                    //=================================================================
+                    try
+                    {
+                        await JobsBiz.ProcessJobsAsync();
+                    }
+                    catch (Exception ex)
+                    {
+                        log.LogError(ex, "Generate::ProcessJobs result in exception error ");
+                    }
+                    //=================================================================
+                }
+              //There *MUST* be a delay here or the server will come to a standstill
+              //ideally need to move on from this method of generation to something external or more reasonable but
+              //this does work, we need to get to release, for our projected use load this should be fine and it's
+              //a documented by MS method to do asp.net core job processing 
+              //https://docs.microsoft.com/en-us/aspnet/core/fundamentals/host/hosted-services?view=aspnetcore-6.0&tabs=visual-studio
+               await Task.Delay(1000);
+            }
+            log.LogInformation($"GeneratorService is stopping");
+        }
+
+        public override Task StopAsync(CancellationToken stoppingToken)
+        {
+            log.LogDebug($"GeneratorService StopAsync triggered");
+            return Task.FromResult(0);
+            // Run any needed clean-up actions
+        }
+    }//eoc
+}//eons