Add mongodb scheme migrator

framework/src/Volo.Abp.MongoDB/Volo/Abp/MongoDB/AbpMongoDbModule.cs

@@ -1,8 +1,5 @@
-using System;
+using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
-using MongoDB.Driver;
-using Volo.Abp.Data;
 using Volo.Abp.Domain;
 using Volo.Abp.Domain.Repositories.MongoDB;
 using Volo.Abp.Modularity;
@@ -36,31 +33,5 @@ namespace Volo.Abp.MongoDB
                 typeof(MongoDbRepositoryFilterer<,>)
             );
         }
-
-        public override void OnApplicationInitialization(ApplicationInitializationContext context)
-        {
-            InitializeAllCollections(context.ServiceProvider);
-        }
-
-        private void InitializeAllCollections(IServiceProvider serviceProvider)
-        {
-            var dbContexts = serviceProvider.GetServices<IAbpMongoDbContext>();
-            var connectionStringResolver = serviceProvider.GetService<IConnectionStringResolver>();
-
-            foreach (var dbContext in dbContexts)
-            {
-                var connectionString = connectionStringResolver.Resolve(ConnectionStringNameAttribute.GetConnStringName(dbContext.GetType()));
-                var mongoUrl = new MongoUrl(connectionString);
-                var databaseName = mongoUrl.DatabaseName;
-                var client = new MongoClient(mongoUrl);
-
-                if (databaseName.IsNullOrWhiteSpace())
-                {
-                    databaseName = ConnectionStringNameAttribute.GetConnStringName(dbContext.GetType());
-                }
-
-                (dbContext as AbpMongoDbContext)?.InitializeCollections(client.GetDatabase(databaseName));
-            }
-        }
     }
 }

templates/app/aspnet-core/src/MyCompanyName.MyProjectName.MongoDB/MongoDb/MongoDbMyProjectNameDbSchemaMigrator.cs

@@ -0,0 +1,45 @@
+using System;
+using System.Threading.Tasks;
+using Microsoft.Extensions.DependencyInjection;
+using MongoDB.Driver;
+using MyCompanyName.MyProjectName.Data;
+using Volo.Abp.Data;
+using Volo.Abp.MongoDB;
+
+namespace MyCompanyName.MyProjectName.MongoDB
+{
+    public class MongoDbMyProjectNameDbSchemaMigrator : IMyProjectNameDbSchemaMigrator
+    {
+        private readonly IServiceProvider _serviceProvider;
+
+        public MongoDbMyProjectNameDbSchemaMigrator(IServiceProvider serviceProvider)
+        {
+            _serviceProvider = serviceProvider;
+        }
+
+        public Task MigrateAsync()
+        {
+            var dbContexts = _serviceProvider.GetServices<IAbpMongoDbContext>();
+            var connectionStringResolver = _serviceProvider.GetService<IConnectionStringResolver>();
+
+            foreach (var dbContext in dbContexts)
+            {
+                var connectionString =
+                    connectionStringResolver.Resolve(
+                        ConnectionStringNameAttribute.GetConnStringName(dbContext.GetType()));
+                var mongoUrl = new MongoUrl(connectionString);
+                var databaseName = mongoUrl.DatabaseName;
+                var client = new MongoClient(mongoUrl);
+
+                if (databaseName.IsNullOrWhiteSpace())
+                {
+                    databaseName = ConnectionStringNameAttribute.GetConnStringName(dbContext.GetType());
+                }
+
+                (dbContext as AbpMongoDbContext)?.InitializeCollections(client.GetDatabase(databaseName));
+            }
+
+            return Task.CompletedTask;
+        }
+    }
+}