Resolved #32: Created ApplicationService, DomainService and AbpServiceBase classes.

src/Volo.Abp/Volo/Abp/AbpServiceBase.cs

@@ -0,0 +1,27 @@
+using System;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Logging.Abstractions;
+using Volo.Abp.ObjectMapping;
+using Volo.Abp.Uow;
+
+namespace Volo.Abp
+{
+    public abstract class AbpServiceBase
+    {
+        public IUnitOfWorkManager UnitOfWorkManager { get; set; }
+
+        public IObjectMapper ObjectMapper { get; set; }
+
+        protected IUnitOfWork CurrentUnitOfWork => UnitOfWorkManager?.Current;
+
+        public ILoggerFactory LoggerFactory { get; set; }
+
+        protected ILogger Logger => _lazyLogger.Value;
+        private Lazy<ILogger> _lazyLogger => new Lazy<ILogger>(() => LoggerFactory?.CreateLogger(GetType().FullName) ?? NullLogger.Instance, true);
+        
+        /* Will be added when developed
+           - Setting manager
+           - Localization manager and helper methods
+         */
+    }
+}

src/Volo.Abp/Volo/Abp/Application/Services/ApplicationService.cs

@@ -1,14 +1,10 @@
-using Volo.Abp.ObjectMapping;
-using Volo.Abp.Uow;
-
 namespace Volo.Abp.Application.Services
 {
-    public abstract class ApplicationService : IApplicationService
+    public abstract class ApplicationService : AbpServiceBase, IApplicationService
     {
-        public IUnitOfWorkManager UnitOfWorkManager { get; set; }
-        
-        public IObjectMapper ObjectMapper { get; set; }
-
-        protected IUnitOfWork CurrentUnitOfWork => UnitOfWorkManager.Current;
+        /* Will be added when implemented
+          - AbpSession
+          - ...
+         */
     }
 }

src/Volo.Abp/Volo/Abp/Domain/Services/DomainService.cs

@@ -0,0 +1,7 @@
+namespace Volo.Abp.Domain.Services
+{
+    public abstract class DomainService : AbpServiceBase, IDomainService
+    {
+
+    }
+}