initial thinking about background tasks:

docs/dflow.drawio

@@ -1 +1 @@
-<mxfile host="Electron" modified="2020-07-23T01:48:21.835Z" agent="5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/13.4.5 Chrome/83.0.4103.122 Electron/9.1.0 Safari/537.36" etag="qJ2GeuD9mYHNcMzvxtn8" version="13.4.5" type="device"><diagram id="V8f9L8YYHBLShP1pbl8O" name="Page-1">1VhNc5swEP01HJPhw7juMf5I05l0phMf0vQmwxrUEYgRIsb59ZXsBaxQM7hxYnIy+7QS0u57u0aWN0vKb4Jk8Q8eArNcOywtb265ruPYrvrRyHaP+D4CkaAhOjXAkr4AgjaiBQ0hNxwl50zSzAQDnqYQSAMjQvCN6bbmzHxrRiJoAcuAsDb6SEMZ1+eym4E7oFGMr574OJCQyhmBPCYh3xxA3sLyZoJzuX9KyhkwHbwqLvt5t0dG640JSGWfCRFbrZ9mNrV56Fz99srUnT9eOaP9Ms+EFXhiyx2TJLO8KVPLTk0rA5HTXNZgZLigtTus3FYRhFAFFE0uZMwjnhK2aNCp4EUagt6mrazG555ztezcUeAfkHKL7CCF5AqKZcJwFEoqf+np1z5aT7iYfp6Xh8YWjVwSIW80QxQQMJLnNKjgW8rqpdOwckp5CnsEx+36uPqMR9OCUM4LEUBXLpDeREQgO/zcmjxKdcATkGKr5glgRNJncx8E6R/Vfg1D1AOS5BTCtPiylFxAK+tmTjcxlbDMyO78G1UpzPzhmiAklN1hbB8bJ/hjlBnWGW+C9uZAtZUU4wPBVvPOHqnxScoiWaaINThhpSoSB8rSZi0tbTTa2lnb86vC7akKv5Me9rUzcr8aDKk6TG/d4OI/OVVnaFz4ep2rnb2mS72H/2eQ22LQTRQJiIhUerMfdOcYmuxc+9Kyq9LaU3cpl3S9HZ7uurtOz+Z1Rhl6PWV4hC6fRnNeiz2LZ9i9e1rkF5ebNxpal5ucpDYoISh09RqW3M6ok9Hb/sR9Gp20vxvuSBoyEIPTyOVbkn+0piylAJIoAezUsVLBG0dt1ZiWFCTNSSApT0/S0Ufn4YvzKg8Xr1WOe4niMsAPzb5fmt6/E/xBX5pt2XReTRQrRvP45NZyT1bAzIwRRqNUJ0tFVhU0b6p1QAPCbnAgoWG4Jwfk9IWsduvpJGW6/u4C4U8tf94lJLywwslWfU10mNAOFh+V3ZV97Zq6e1srqXZtirnq++/faJz2jcMDEPWlbONl44XLXF3CBvOXzGnfPHzHhnPpljAxY+WM3i9WymzuVvdkbG6ovcVf</diagram></mxfile>
+<mxfile host="Electron" modified="2021-05-17T00:26:14.059Z" agent="5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/14.5.1 Chrome/89.0.4389.82 Electron/12.0.1 Safari/537.36" etag="-nqNAtc4U_zQEWmDcQsL" version="14.5.1" type="device" pages="2"><diagram id="V8f9L8YYHBLShP1pbl8O" name="DFlow Core">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</diagram><diagram id="tlt5xoNz5M20IAOSsDzy" name="DFlow Services">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</diagram></mxfile>

src/DFlow.Services/BaseDFlowService.cs

@@ -0,0 +1,26 @@
+// Copyright (C) 2020  Road to Agility
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace DFlow.Services
+{
+    public abstract class BaseDFlowService:IDFlowService
+    {
+        public string Name { get; private set; }
+        public DFlowServiceStatus Status { get; private set; }
+        public DFlowServiceRestartingStrategy RestartingStrategy { get; private set; }
+
+        protected BaseDFlowService(string name, DFlowServiceStatus status,
+            DFlowServiceRestartingStrategy restartingStrategy)
+        {
+            Name = name;
+            Status = status;
+            RestartingStrategy = restartingStrategy;
+        }
+    }
+}

src/DFlow.Services/DFlow.Services.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>netcoreapp3.1</TargetFramework>
+        <Configurations>Debug;Release;Release Profilling</Configurations>
+        <Platforms>AnyCPU</Platforms>
+    </PropertyGroup>
+
+    <PropertyGroup Condition=" '$(Configuration)' == 'Release Profilling' ">
+      <Optimize Condition=" '$(Optimize)' == '' ">true</Optimize>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="FluentMediator" Version="0.4.7" />
+    </ItemGroup>
+
+</Project>

src/DFlow.Services/IContextService.cs

@@ -0,0 +1,17 @@
+// Copyright (C) 2020  Road to Agility
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace DFlow.Services
+{
+    public interface IContextService
+    {
+        void AddService(IDFlowService service);
+        void UpdateService(IDFlowService service);
+    }
+}

src/DFlow.Services/IDFlowService.cs

@@ -0,0 +1,28 @@
+// Copyright (C) 2020  Road to Agility
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace DFlow.Services
+{
+    public enum DFlowServiceStatus
+    {
+
+    }
+
+    public enum DFlowServiceRestartingStrategy
+    {
+
+    }
+
+    public interface IDFlowService
+    {
+        string Name {get; }
+        DFlowServiceStatus Status { get; }
+        DFlowServiceRestartingStrategy RestartingStrategy { get; }
+    }
+}

src/DFlow.Services/ISupervizerStrategy.cs

@@ -0,0 +1,16 @@
+// Copyright (C) 2020  Road to Agility
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at https://mozilla.org/MPL/2.0/.
+
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace DFlow.Services
+{
+    public interface ISupervizerStrategy
+    {
+
+    }
+}

src/contrib/DFlow.Services.HostedServices/DFlow.Services.HostedServices.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>netcoreapp3.1</TargetFramework>
+        <Configurations>Debug;Release;Release Profilling</Configurations>
+        <Platforms>AnyCPU</Platforms>
+    </PropertyGroup>
+
+    <PropertyGroup Condition=" '$(Configuration)' == 'Release Profilling' ">
+      <Optimize Condition=" '$(Optimize)' == '' ">true</Optimize>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="FluentMediator" Version="0.4.7" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\..\DFlow.Domain.Events\DFlow.Domain.Events.csproj" />
+    </ItemGroup>
+
+</Project>