Created basic dynamic connection string resolve and dbcontext configuration infrastructure.

src/AbpDesk/AbpDesk.ConsoleDemo/AbpDesk/ConsoleDemo/AbpDeskConsoleDemoModule.cs

@@ -1,6 +1,10 @@
-using AbpDesk.EntityFrameworkCore;
+using System.IO;
+using AbpDesk.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Volo.Abp.Data;
+using Volo.Abp.EntityFrameworkCore;
 using Volo.Abp.Modularity;
 
 namespace AbpDesk.ConsoleDemo
@@ -10,12 +14,29 @@ namespace AbpDesk.ConsoleDemo
     {
         public override void ConfigureServices(IServiceCollection services)
         {
-            services.AddDbContext<AbpDeskDbContext>(options =>
+            var configuration = BuildConfiguration();
+
+            services.Configure<DbConnectionOptions>(configuration);
+
+            services.Configure<AbpDbContextOptions>(options =>
             {
-                options.UseSqlServer("Server=localhost;Database=AbpDesk;Trusted_Connection=True;");
+                options.Configure(context =>
+                {
+                    context.DbContextOptions.UseSqlServer(context.ConnectionString);
+                });
             });
 
             services.AddAssemblyOf<AbpDeskConsoleDemoModule>();
         }
+
+        private static IConfigurationRoot BuildConfiguration()
+        {
+            var builder = new ConfigurationBuilder()
+                .SetBasePath(Directory.GetCurrentDirectory())
+                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);
+
+            var configuration = builder.Build();
+            return configuration;
+        }
     }
 }

src/AbpDesk/AbpDesk.ConsoleDemo/appsettings.json

@@ -0,0 +1,9 @@
+{
+  "ConnectionStrings": {
+    "Default": "Server=localhost;Database=AbpDesk;Trusted_Connection=True;",
+    "Modules": {
+      "Module1": "Module1-ConnString", //TODO: Remove this dummy definitions
+      "Module2": "Module2-ConnString"
+    } 
+  }
+}

src/AbpDesk/AbpDesk.ConsoleDemo/project.json

@@ -1,7 +1,10 @@
-{
+{
   "version": "1.0.0-*",
-  "buildOptions": {
-    "emitEntryPoint": true
+
+  "frameworks": {
+    "netcoreapp1.1": {
+      "imports": "dnxcore50"
+    }
   },
 
   "dependencies": {
@@ -15,16 +18,19 @@
     "Microsoft.EntityFrameworkCore.Tools": {
       "type": "build",
       "version": "1.1.0-preview4-final"
-    }
+    },
+    "Microsoft.Extensions.Configuration.Json": "1.1.0",
+    "Microsoft.Extensions.Options.ConfigurationExtensions": "1.1.0" 
   },
 
   "tools": {
     "Microsoft.EntityFrameworkCore.Tools": "1.1.0-preview4-final"
   },
 
-  "frameworks": {
-    "netcoreapp1.1": {
-      "imports": "dnxcore50"
-    }
+  "buildOptions": {
+    "emitEntryPoint": true,
+    "copyToOutput": [
+      "appsettings.json"
+    ]
   }
 }

src/AbpDesk/AbpDesk.EntityFrameworkCore/AbpDesk/EntityFrameworkCore/AbpDeskEntityFrameworkCoreModule.cs

@@ -10,7 +10,8 @@ namespace AbpDesk.EntityFrameworkCore
         public override void ConfigureServices(IServiceCollection services)
         {
             services.AddAssemblyOf<AbpDeskEntityFrameworkCoreModule>();
-            services.AddDefaultEfCoreRepositories<AbpDeskDbContext>();
+            services.AddAbpDbContext<AbpDeskDbContext>();
+            services.AddDefaultEfCoreRepositories<AbpDeskDbContext>(); //TODO: Move this into AddAbpDbContext as option
         }
     }
 }

src/AbpDesk/AbpDesk.UI/AbpDeskWebAppModule.cs

@@ -1,11 +1,16 @@
-using AbpDesk.EntityFrameworkCore;
+using System.IO;
+using AbpDesk.EntityFrameworkCore;
 using Microsoft.AspNetCore.Builder;
 using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Volo.Abp.AspNetCore.Modularity;
 using Volo.Abp.AspNetCore.Mvc;
+using Volo.Abp.Data;
+using Volo.Abp.EntityFrameworkCore;
 using Volo.Abp.Modularity;
 
 namespace AbpDesk
@@ -17,6 +22,18 @@ namespace AbpDesk
     {
         public override void ConfigureServices(IServiceCollection services)
         {
+            var configuration = BuildConfiguration();
+
+            services.Configure<DbConnectionOptions>(configuration);
+
+            services.Configure<AbpDbContextOptions>(options =>
+            {
+                options.Configure(context =>
+                {
+                    context.DbContextOptions.UseSqlServer(context.ConnectionString);
+                });
+            });
+
             services.AddDbContext<AbpDeskDbContext>(options =>
             {
                 options.UseSqlServer("Server=localhost;Database=AbpDesk;Trusted_Connection=True;");
@@ -45,5 +62,15 @@ namespace AbpDesk
                     template: "{controller=Home}/{action=Index}/{id?}");
             });
         }
+
+        private static IConfigurationRoot BuildConfiguration()
+        {
+            var builder = new ConfigurationBuilder()
+                .SetBasePath(Directory.GetCurrentDirectory()) //TODO: Get from IHostingEnvironment!!!
+                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true);
+
+            var configuration = builder.Build();
+            return configuration;
+        }
     }
 }

src/AbpDesk/AbpDesk.UI/appsettings.json

@@ -0,0 +1,9 @@
+{
+  "ConnectionStrings": {
+    "Default": "Server=localhost;Database=AbpDesk;Trusted_Connection=True;",
+    "Modules": {
+      "Module1": "Module1-ConnString", //TODO: Remove this dummy definitions
+      "Module2": "Module2-ConnString"
+    } 
+  }
+}

src/AbpDesk/AbpDesk.UI/project.json

@@ -11,6 +11,7 @@
     "Microsoft.AspNetCore.StaticFiles": "1.1.0",
     "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.1.0",
     "Microsoft.Extensions.Configuration.Json": "1.1.0",
+    "Microsoft.Extensions.Options.ConfigurationExtensions": "1.1.0",
     "AbpDesk.Application.Contracts": "1.0.0-*",
     "Microsoft.EntityFrameworkCore.Tools": {
       "type": "build",

src/Volo.Abp.EntityFrameworkCore/Microsoft/Extensions/DependencyInjection/AbpDbContextConfigurationContext.cs

@@ -0,0 +1,34 @@
+using JetBrains.Annotations;
+using Microsoft.EntityFrameworkCore;
+using Volo.Abp.EntityFrameworkCore;
+
+namespace Microsoft.Extensions.DependencyInjection
+{
+    public class AbpDbContextConfigurationContext
+    {
+        public string ConnectionString { get; }
+
+        public string ModuleName { get; }
+
+        public virtual DbContextOptionsBuilder DbContextOptions { get; protected set; }
+
+        public AbpDbContextConfigurationContext(string connectionString, [CanBeNull] string moduleName)
+        {
+            ConnectionString = connectionString;
+            ModuleName = moduleName;
+            DbContextOptions = new DbContextOptionsBuilder();
+        }
+    }
+
+    public class AbpDbContextConfigurationContext<TDbContext> : AbpDbContextConfigurationContext
+        where TDbContext : AbpDbContext<TDbContext>
+    {
+        public new DbContextOptionsBuilder<TDbContext> DbContextOptions => (DbContextOptionsBuilder<TDbContext>)base.DbContextOptions;
+
+        public AbpDbContextConfigurationContext(string connectionString, [CanBeNull] string moduleName)
+            : base(connectionString, moduleName)
+        {
+            base.DbContextOptions = new DbContextOptionsBuilder<TDbContext>();
+        }
+    }
+}

src/Volo.Abp.EntityFrameworkCore/Microsoft/Extensions/DependencyInjection/AbpDbContextConfigurerAction.cs

@@ -0,0 +1,34 @@
+using System;
+using JetBrains.Annotations;
+using Volo;
+using Volo.Abp.EntityFrameworkCore;
+
+namespace Microsoft.Extensions.DependencyInjection
+{
+    public class AbpDbContextConfigurerAction : IAbpDbContextConfigurer
+    {
+        [NotNull]
+        public Action<AbpDbContextConfigurationContext> Action { get; }
+
+        public AbpDbContextConfigurerAction([NotNull] Action<AbpDbContextConfigurationContext> action)
+        {
+            Check.NotNull(action, nameof(action));
+
+            Action = action;
+        }
+
+        public void Configure(AbpDbContextConfigurationContext context)
+        {
+            Action.Invoke(context);
+        }
+    }
+
+    public class AbpDbContextConfigurerAction<TDbContext> : AbpDbContextConfigurerAction
+        where TDbContext : AbpDbContext<TDbContext>
+    {
+        public AbpDbContextConfigurerAction([NotNull] Action<AbpDbContextConfigurationContext> action) 
+            : base(action)
+        {
+        }
+    }
+}

src/Volo.Abp.EntityFrameworkCore/Microsoft/Extensions/DependencyInjection/AbpEfCoreServiceCollectionExtensions.cs

@@ -1,13 +1,58 @@
-using Microsoft.Extensions.DependencyInjection.Extensions;
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.DependencyInjection.Extensions;
+using Microsoft.Extensions.Options;
+using Volo.Abp;
+using Volo.Abp.Data;
 using Volo.Abp.Domain.Entities;
 using Volo.Abp.Domain.Repositories;
 using Volo.Abp.EntityFrameworkCore;
 using Volo.Abp.Repositories.EntityFrameworkCore;
+using Volo.ExtensionMethods.Collections.Generic;
 
 namespace Microsoft.Extensions.DependencyInjection
 {
     public static class AbpEfCoreServiceCollectionExtensions
     {
+        public static IServiceCollection AddAbpDbContext<TDbContext>(
+            this IServiceCollection services)
+            where TDbContext : AbpDbContext<TDbContext>
+        {
+            services //TODO: This are copied from EntityFrameworkServiceCollectionExtensions, we should think on that later
+                .AddMemoryCache()
+                .AddLogging();
+
+            services.TryAddTransient<TDbContext>();
+            services.TryAddSingleton(serviceProvider =>
+            {
+                const string moduleName = "";
+
+                var connInfoResolver = serviceProvider.GetRequiredService<IConnectionStringResolver>();
+
+                var context = new AbpDbContextConfigurationContext<TDbContext>(connInfoResolver.Resolve(moduleName), moduleName);
+
+                var dbContextOptions = serviceProvider.GetRequiredService<IOptions<AbpDbContextOptions>>().Value;
+
+                var configureAction = dbContextOptions.ConfigureActions.GetOrDefault(typeof(TDbContext));
+                if (configureAction != null)
+                {
+                    ((Action<AbpDbContextConfigurationContext<TDbContext>>) configureAction).Invoke(context);
+                }
+                else if(dbContextOptions.DefaultConfigureAction != null)
+                {
+                    dbContextOptions.DefaultConfigureAction.Invoke(context);
+                }
+                else
+                {
+                    throw new AbpException("Should set a configure action for dbcontext"); //TODO: Better message
+                }
+
+                return context.DbContextOptions.Options;
+            });
+
+            return services;
+        }
+
         public static IServiceCollection AddDefaultEfCoreRepositories<TDbContext>(this IServiceCollection services)
             where TDbContext : AbpDbContext<TDbContext>
         {

src/Volo.Abp.EntityFrameworkCore/Microsoft/Extensions/DependencyInjection/IAbpDbContextConfigurer.cs

@@ -0,0 +1,15 @@
+using Volo.Abp.EntityFrameworkCore;
+
+namespace Microsoft.Extensions.DependencyInjection
+{
+    public interface IAbpDbContextConfigurer
+    {
+        void Configure(AbpDbContextConfigurationContext context);
+    }
+
+    public interface IAbpDbContextConfigurer<TDbContext>
+        where TDbContext : AbpDbContext<TDbContext>
+    {
+        void Configure(AbpDbContextConfigurationContext<TDbContext> context);
+    }
+}

src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/AbpDbContext.cs

@@ -11,4 +11,4 @@ namespace Volo.Abp.EntityFrameworkCore
 
         }
     }
-}
+}

src/Volo.Abp.EntityFrameworkCore/Volo/Abp/EntityFrameworkCore/AbpDbContextOptions.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using JetBrains.Annotations;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace Volo.Abp.EntityFrameworkCore
+{
+    public class AbpDbContextOptions
+    {
+        internal Action<AbpDbContextConfigurationContext> DefaultConfigureAction { get; set; }
+
+        internal Dictionary<Type, object> ConfigureActions { get; set; }
+
+        public AbpDbContextOptions()
+        {
+            ConfigureActions = new Dictionary<Type, object>();
+        }
+
+        public void Configure([NotNull] Action<AbpDbContextConfigurationContext> action)
+        {
+            Check.NotNull(action, nameof(action));
+
+            DefaultConfigureAction = action;
+        }
+
+        public void Configure<TDbContext>([NotNull] Action<AbpDbContextConfigurationContext<TDbContext>> action) 
+            where TDbContext : AbpDbContext<TDbContext>
+        {
+            Check.NotNull(action, nameof(action));
+
+            ConfigureActions[typeof(TDbContext)] = action;
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/AbpKernelModule.cs

@@ -7,6 +7,7 @@ namespace Volo.Abp
     {
         public override void ConfigureServices(IServiceCollection services)
         {
+            services.AddOptions();
             services.AddAssemblyOf<AbpKernelModule>();
         }
     }

src/Volo.Abp/Volo/Abp/Data/ConnectionStringResolver.cs

@@ -0,0 +1,38 @@
+using Microsoft.Extensions.Options;
+using Volo.DependencyInjection;
+using Volo.ExtensionMethods;
+using Volo.ExtensionMethods.Collections.Generic;
+
+namespace Volo.Abp.Data
+{
+    public class ConnectionStringResolver : IConnectionStringResolver, ITransientDependency
+    {
+        private readonly DbConnectionOptions _options; //TODO: Use IOptionsSnapshot
+
+        public ConnectionStringResolver(IOptions<DbConnectionOptions> options)
+        {
+            _options = options.Value;
+        }
+
+        public string Resolve(string modulename)
+        {
+            //Get default value
+            var connString = _options.ConnectionStrings.Default;
+
+            //Override by module specific value if provided
+            if (!modulename.IsNullOrEmpty())
+            {
+                var moduleConnString = _options.ConnectionStrings.Modules.GetOrDefault(modulename);
+                if (!moduleConnString.IsNullOrEmpty())
+                {
+                    connString = moduleConnString;
+                }
+            }
+
+            //TODO: Override by tenant conn string
+            //TODO: Override by tenant module specific conn string
+
+            return connString;
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Data/ConnectionStringsOption.cs

@@ -0,0 +1,16 @@
+using System.Collections.Generic;
+
+namespace Volo.Abp.Data
+{
+    public class ConnectionStringsOption
+    {
+        public string Default { get; set; }
+
+        public Dictionary<string, string> Modules { get; set; }
+
+        public ConnectionStringsOption()
+        {
+            Modules = new Dictionary<string, string>();
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Data/DbConnectionOptions.cs

@@ -0,0 +1,12 @@
+namespace Volo.Abp.Data
+{
+    public class DbConnectionOptions
+    {
+        public ConnectionStringsOption ConnectionStrings { get; set; }
+
+        public DbConnectionOptions()
+        {
+            ConnectionStrings = new ConnectionStringsOption();
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Data/IConnectionInfoResolver.cs

@@ -1,17 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Threading.Tasks;
-
-namespace Volo.Abp.Data
-{
-    public interface IConnectionInfoResolver
-    {
-        ConnectionInfo Resolve();
-    }
-
-    public class ConnectionInfo
-    {
-        public string ConnectionString { get; set; }
-    }
-}

src/Volo.Abp/Volo/Abp/Data/IConnectionStringResolver.cs

@@ -0,0 +1,7 @@
+namespace Volo.Abp.Data
+{
+    public interface IConnectionStringResolver
+    {
+        string Resolve(string modulename);
+    }
+}

src/Volo.Abp/project.json

@@ -10,7 +10,8 @@
     "Nito.AsyncEx.Context": "1.1.0",
     "System.Runtime.Loader": "4.3.0",
     "System.Linq.Queryable": "4.3.0",
-    "Volo.Abp.ApplicationContracts": "1.0.0-*"
+    "Volo.Abp.ApplicationContracts": "1.0.0-*",
+    "Microsoft.Extensions.Options": "1.1.0" 
   },
 
   "frameworks": {

test/AbpDesk/AbpDesk.Application.Tests/AbpDesk/AbpDeskApplicationTestModule.cs

@@ -2,6 +2,8 @@
 using AbpDesk.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.Extensions.DependencyInjection;
+using Volo.Abp.Data;
+using Volo.Abp.EntityFrameworkCore;
 using Volo.Abp.Modularity;
 
 namespace AbpDesk
@@ -12,9 +14,18 @@ namespace AbpDesk
         public override void ConfigureServices(IServiceCollection services)
         {
             services.AddEntityFrameworkInMemoryDatabase();
-            services.AddDbContext<AbpDeskDbContext>(options =>
+
+            services.Configure<DbConnectionOptions>(options =>
+            {
+                options.ConnectionStrings.Default = Guid.NewGuid().ToString();
+            });
+
+            services.Configure<AbpDbContextOptions>(options =>
             {
-                options.UseInMemoryDatabase(Guid.NewGuid().ToString());
+                options.Configure(context =>
+                {
+                    context.DbContextOptions.UseInMemoryDatabase(context.ConnectionString);
+                });
             });
         }
     }