feat: added onconnectioncreate module option

lib/interfaces/mongoose-options.interface.ts

@@ -1,5 +1,5 @@
 import { ModuleMetadata, Type } from '@nestjs/common';
-import { ConnectOptions, MongooseError } from 'mongoose';
+import { ConnectOptions, MongooseError, Connection } from 'mongoose';
 
 export interface MongooseModuleOptions extends ConnectOptions {
   uri?: string;
@@ -9,6 +9,7 @@ export interface MongooseModuleOptions extends ConnectOptions {
   connectionFactory?: (connection: any, name: string) => any;
   connectionErrorFactory?: (error: MongooseError) => MongooseError;
   lazyConnection?: boolean;
+  onConnectionCreate?: (connection: Connection) => void;
 }
 
 export interface MongooseOptionsFactory {

lib/mongoose-core.module.ts

@@ -43,6 +43,7 @@ export class MongooseCoreModule implements OnApplicationShutdown {
       connectionFactory,
       connectionErrorFactory,
       lazyConnection,
+      onConnectionCreate,
       ...mongooseOptions
     } = options;
 
@@ -65,11 +66,10 @@ export class MongooseCoreModule implements OnApplicationShutdown {
         await lastValueFrom(
           defer(async () =>
             mongooseConnectionFactory(
-              await this.createMongooseConnection(
-                uri,
-                mongooseOptions,
+              await this.createMongooseConnection(uri, mongooseOptions, {
                 lazyConnection,
-              ),
+                onConnectionCreate,
+              }),
               mongooseConnectionName,
             ),
           ).pipe(
@@ -107,6 +107,7 @@ export class MongooseCoreModule implements OnApplicationShutdown {
           connectionFactory,
           connectionErrorFactory,
           lazyConnection,
+          onConnectionCreate,
           ...mongooseOptions
         } = mongooseModuleOptions;
 
@@ -122,7 +123,7 @@ export class MongooseCoreModule implements OnApplicationShutdown {
               await this.createMongooseConnection(
                 uri as string,
                 mongooseOptions,
-                lazyConnection,
+                { lazyConnection, onConnectionCreate },
               ),
               mongooseConnectionName,
             ),
@@ -190,14 +191,19 @@ export class MongooseCoreModule implements OnApplicationShutdown {
   private static async createMongooseConnection(
     uri: string,
     mongooseOptions: ConnectOptions,
-    lazyConnection?: boolean,
+    factoryOptions: {
+      lazyConnection?: boolean;
+      onConnectionCreate?: MongooseModuleOptions['onConnectionCreate'];
+    },
   ): Promise<Connection> {
     const connection = mongoose.createConnection(uri, mongooseOptions);
 
-    if (lazyConnection) {
+    if (factoryOptions?.lazyConnection) {
       return connection;
     }
 
+    factoryOptions?.onConnectionCreate?.(connection);
+
     return connection.asPromise();
   }