Resolved #2540. Resolved #2539.

* Send IServiceProvider to DoWork method of the periodic background worker #2539
* Introduce AsyncPeriodicBackgroundWorkerBase #2540

framework/src/Volo.Abp.BackgroundJobs.Abstractions/Volo/Abp/BackgroundJobs/BackgroundJobExecuter.cs

@@ -4,7 +4,6 @@ using Microsoft.Extensions.Options;
 using System;
 using System.Threading.Tasks;
 using Volo.Abp.DependencyInjection;
-using Volo.Abp.Threading;
 
 namespace Volo.Abp.BackgroundJobs
 {
@@ -21,7 +20,7 @@ namespace Volo.Abp.BackgroundJobs
             Logger = NullLogger<BackgroundJobExecuter>.Instance;
         }
 
-        public virtual void Execute(JobExecutionContext context)
+        public virtual async Task ExecuteAsync(JobExecutionContext context)
         {
             var job = context.ServiceProvider.GetService(context.JobType);
             if (job == null)
@@ -41,7 +40,7 @@ namespace Volo.Abp.BackgroundJobs
             {
                 if (jobExecuteMethod.Name == nameof(IAsyncBackgroundJob<object>.ExecuteAsync))
                 {
-                    AsyncHelper.RunSync(() => (Task) jobExecuteMethod.Invoke(job, new[] {context.JobArgs}));
+                    await ((Task) jobExecuteMethod.Invoke(job, new[] {context.JobArgs})).ConfigureAwait(false);
                 }
                 else
                 {

framework/src/Volo.Abp.BackgroundJobs.Abstractions/Volo/Abp/BackgroundJobs/IBackgroundJobExecuter.cs

@@ -1,7 +1,9 @@
-namespace Volo.Abp.BackgroundJobs
+using System.Threading.Tasks;
+
+namespace Volo.Abp.BackgroundJobs
 {
     public interface IBackgroundJobExecuter
     {
-        void Execute(JobExecutionContext context);
+        Task ExecuteAsync(JobExecutionContext context);
     }
 }

framework/src/Volo.Abp.BackgroundJobs.HangFire/Volo/Abp/BackgroundJobs/Hangfire/HangfireJobExecutionAdapter.cs

@@ -1,5 +1,6 @@
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
+using Volo.Abp.Threading;
 
 namespace Volo.Abp.BackgroundJobs.Hangfire
 {
@@ -25,7 +26,7 @@ namespace Volo.Abp.BackgroundJobs.Hangfire
             {
                 var jobType = Options.GetJob(typeof(TArgs)).JobType;
                 var context = new JobExecutionContext(scope.ServiceProvider, jobType, args);
-                JobExecuter.Execute(context);
+                AsyncHelper.RunSync(() => JobExecuter.ExecuteAsync(context));
             }
         }
     }

framework/src/Volo.Abp.BackgroundJobs.RabbitMQ/Volo/Abp/BackgroundJobs/RabbitMQ/JobQueue.cs

@@ -10,6 +10,7 @@ using Nito.AsyncEx;
 using RabbitMQ.Client;
 using RabbitMQ.Client.Events;
 using Volo.Abp.RabbitMQ;
+using Volo.Abp.Threading;
 
 namespace Volo.Abp.BackgroundJobs.RabbitMQ
 {
@@ -181,7 +182,7 @@ namespace Volo.Abp.BackgroundJobs.RabbitMQ
 
                 try
                 {
-                    JobExecuter.Execute(context);
+                    AsyncHelper.RunSync(() => JobExecuter.ExecuteAsync(context));
                     ChannelAccessor.Channel.BasicAck(deliveryTag: ea.DeliveryTag, multiple: false);
                 }
                 catch (BackgroundJobExecutionException)

framework/src/Volo.Abp.BackgroundJobs/Volo/Abp/BackgroundJobs/BackgroundJobWorker.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Linq;
+using System.Threading.Tasks;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
@@ -9,92 +10,88 @@ using Volo.Abp.Timing;
 
 namespace Volo.Abp.BackgroundJobs
 {
-    public class BackgroundJobWorker : PeriodicBackgroundWorkerBase, IBackgroundJobWorker
+    public class BackgroundJobWorker : AsyncPeriodicBackgroundWorkerBase, IBackgroundJobWorker
     {
         protected AbpBackgroundJobOptions JobOptions { get; }
 
         protected AbpBackgroundJobWorkerOptions WorkerOptions { get; }
 
-        protected IServiceScopeFactory ServiceScopeFactory { get; }
-
         public BackgroundJobWorker(
             AbpTimer timer,
             IOptions<AbpBackgroundJobOptions> jobOptions,
             IOptions<AbpBackgroundJobWorkerOptions> workerOptions,
             IServiceScopeFactory serviceScopeFactory)
-            : base(timer)
+            : base(
+                timer,
+                serviceScopeFactory)
         {
-            ServiceScopeFactory = serviceScopeFactory;
             WorkerOptions = workerOptions.Value;
             JobOptions = jobOptions.Value;
             Timer.Period = WorkerOptions.JobPollPeriod;
         }
 
-        protected override void DoWork()
+        protected override async Task DoWorkAsync(PeriodicBackgroundWorkerContext workerContext)
         {
-            using (var scope = ServiceScopeFactory.CreateScope())
-            {
-                var store = scope.ServiceProvider.GetRequiredService<IBackgroundJobStore>();
+            var store = workerContext.ServiceProvider.GetRequiredService<IBackgroundJobStore>();
 
-                var waitingJobs = AsyncHelper.RunSync(() => store.GetWaitingJobsAsync(WorkerOptions.MaxJobFetchCount));
+            var waitingJobs = await store.GetWaitingJobsAsync(WorkerOptions.MaxJobFetchCount).ConfigureAwait(false);
 
-                if (!waitingJobs.Any())
-                {
-                    return;
-                }
+            if (!waitingJobs.Any())
+            {
+                return;
+            }
+
+            var jobExecuter = workerContext.ServiceProvider.GetRequiredService<IBackgroundJobExecuter>();
+            var clock = workerContext.ServiceProvider.GetRequiredService<IClock>();
+            var serializer = workerContext.ServiceProvider.GetRequiredService<IBackgroundJobSerializer>();
 
-                var jobExecuter = scope.ServiceProvider.GetRequiredService<IBackgroundJobExecuter>();
-                var clock = scope.ServiceProvider.GetRequiredService<IClock>();
-                var serializer = scope.ServiceProvider.GetRequiredService<IBackgroundJobSerializer>();
+            foreach (var jobInfo in waitingJobs)
+            {
+                jobInfo.TryCount++;
+                jobInfo.LastTryTime = clock.Now;
 
-                foreach (var jobInfo in waitingJobs)
+                try
                 {
-                    jobInfo.TryCount++;
-                    jobInfo.LastTryTime = clock.Now;
+                    var jobConfiguration = JobOptions.GetJob(jobInfo.JobName);
+                    var jobArgs = serializer.Deserialize(jobInfo.JobArgs, jobConfiguration.ArgsType);
+                    var context = new JobExecutionContext(workerContext.ServiceProvider, jobConfiguration.JobType, jobArgs);
 
                     try
                     {
-                        var jobConfiguration = JobOptions.GetJob(jobInfo.JobName);
-                        var jobArgs = serializer.Deserialize(jobInfo.JobArgs, jobConfiguration.ArgsType);
-                        var context = new JobExecutionContext(scope.ServiceProvider, jobConfiguration.JobType, jobArgs);
+                        await jobExecuter.ExecuteAsync(context).ConfigureAwait(false);
 
-                        try
-                        {
-                            jobExecuter.Execute(context);
+                        await store.DeleteAsync(jobInfo.Id).ConfigureAwait(false);
+                    }
+                    catch (BackgroundJobExecutionException)
+                    {
+                        var nextTryTime = CalculateNextTryTime(jobInfo, clock);
 
-                            AsyncHelper.RunSync(() => store.DeleteAsync(jobInfo.Id));
+                        if (nextTryTime.HasValue)
+                        {
+                            jobInfo.NextTryTime = nextTryTime.Value;
                         }
-                        catch (BackgroundJobExecutionException)
+                        else
                         {
-                            var nextTryTime = CalculateNextTryTime(jobInfo, clock);
-
-                            if (nextTryTime.HasValue)
-                            {
-                                jobInfo.NextTryTime = nextTryTime.Value;
-                            }
-                            else
-                            {
-                                jobInfo.IsAbandoned = true;
-                            }
-
-                            TryUpdate(store, jobInfo);
+                            jobInfo.IsAbandoned = true;
                         }
+
+                        await TryUpdateAsync(store, jobInfo).ConfigureAwait(false);
                     }
-                    catch (Exception ex)
-                    {
-                        Logger.LogException(ex);
-                        jobInfo.IsAbandoned = true;
-                        TryUpdate(store, jobInfo);
-                    }
+                }
+                catch (Exception ex)
+                {
+                    Logger.LogException(ex);
+                    jobInfo.IsAbandoned = true;
+                    await TryUpdateAsync(store, jobInfo).ConfigureAwait(false);
                 }
             }
         }
 
-        protected virtual void TryUpdate(IBackgroundJobStore store, BackgroundJobInfo jobInfo)
+        protected virtual async Task TryUpdateAsync(IBackgroundJobStore store, BackgroundJobInfo jobInfo)
         {
             try
             {
-                AsyncHelper.RunSync(() => store.UpdateAsync(jobInfo));
+                await store.UpdateAsync(jobInfo).ConfigureAwait(false);
             }
             catch (Exception updateEx)
             {

framework/src/Volo.Abp.BackgroundWorkers/Volo/Abp/BackgroundWorkers/AsyncPeriodicBackgroundWorkerBase.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Volo.Abp.Threading;
+
+namespace Volo.Abp.BackgroundWorkers
+{
+    public abstract class AsyncPeriodicBackgroundWorkerBase : BackgroundWorkerBase
+    {
+        protected IServiceScopeFactory ServiceScopeFactory { get; }
+        protected AbpTimer Timer { get; }
+
+        protected AsyncPeriodicBackgroundWorkerBase(
+            AbpTimer timer,
+            IServiceScopeFactory serviceScopeFactory)
+        {
+            ServiceScopeFactory = serviceScopeFactory;
+            Timer = timer;
+            Timer.Elapsed += Timer_Elapsed;
+        }
+
+        public override async Task StartAsync(CancellationToken cancellationToken = default)
+        {
+            await base.StartAsync(cancellationToken).ConfigureAwait(false);
+            Timer.Start(cancellationToken);
+        }
+
+        public override async Task StopAsync(CancellationToken cancellationToken = default)
+        {
+            Timer.Stop(cancellationToken);
+            await base.StopAsync(cancellationToken).ConfigureAwait(false);
+        }
+
+        private void Timer_Elapsed(object sender, System.EventArgs e)
+        {
+            try
+            {
+                using (var scope = ServiceScopeFactory.CreateScope())
+                {
+                    AsyncHelper.RunSync(
+                        () => DoWorkAsync(new PeriodicBackgroundWorkerContext(scope.ServiceProvider))
+                    );
+                }
+            }
+            catch (Exception ex)
+            {
+                Logger.LogException(ex);
+            }
+        }
+
+        protected abstract Task DoWorkAsync(PeriodicBackgroundWorkerContext workerContext);
+    }
+}

framework/src/Volo.Abp.BackgroundWorkers/Volo/Abp/BackgroundWorkers/BackgroundWorkerContext.cs

@@ -0,0 +1,14 @@
+using System;
+
+namespace Volo.Abp.BackgroundWorkers
+{
+    public class PeriodicBackgroundWorkerContext
+    {
+        public IServiceProvider ServiceProvider { get; }
+
+        public PeriodicBackgroundWorkerContext(IServiceProvider serviceProvider)
+        {
+            ServiceProvider = serviceProvider;
+        }
+    }
+}

framework/src/Volo.Abp.BackgroundWorkers/Volo/Abp/BackgroundWorkers/PeriodicBackgroundWorkerBase.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Threading;
 using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Volo.Abp.Threading;
 
@@ -11,14 +12,14 @@ namespace Volo.Abp.BackgroundWorkers
     /// </summary>
     public abstract class PeriodicBackgroundWorkerBase : BackgroundWorkerBase
     {
-        protected readonly AbpTimer Timer;
+        protected IServiceScopeFactory ServiceScopeFactory { get; }
+        protected AbpTimer Timer { get; }
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="PeriodicBackgroundWorkerBase"/> class.
-        /// </summary>
-        /// <param name="timer">A timer.</param>
-        protected PeriodicBackgroundWorkerBase(AbpTimer timer)
+        protected PeriodicBackgroundWorkerBase(
+            AbpTimer timer,
+            IServiceScopeFactory serviceScopeFactory)
         {
+            ServiceScopeFactory = serviceScopeFactory;
             Timer = timer;
             Timer.Elapsed += Timer_Elapsed;
         }
@@ -34,12 +35,15 @@ namespace Volo.Abp.BackgroundWorkers
             Timer.Stop(cancellationToken);
             await base.StopAsync(cancellationToken).ConfigureAwait(false);
         }
-        
+
         private void Timer_Elapsed(object sender, System.EventArgs e)
         {
             try
             {
-                DoWork();
+                using (var scope = ServiceScopeFactory.CreateScope())
+                {
+                    DoWork(new PeriodicBackgroundWorkerContext(scope.ServiceProvider));
+                }
             }
             catch (Exception ex)
             {
@@ -50,6 +54,6 @@ namespace Volo.Abp.BackgroundWorkers
         /// <summary>
         /// Periodic works should be done by implementing this method.
         /// </summary>
-        protected abstract void DoWork();
+        protected abstract void DoWork(PeriodicBackgroundWorkerContext workerContext);
     }
 }