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mongo-client.ts
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mongo-client.ts
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import mongoose from 'mongoose';
import { MissingEnvVarException } from '../../../domain/exceptions';
import { ILogger } from '../../../domain/interfaces';
export class MongoClient {
private readonly module = 'MongoClient';
private connection?: typeof mongoose;
constructor(private readonly logger: ILogger) {}
public async connect(): Promise<typeof mongoose> {
if (this.connection) {
return this.connection;
}
const { APP_NAME, MONGO_URI } = process.env;
if (!MONGO_URI) {
this.logger.error('MONGO_URI not found', { module: this.module });
throw new MissingEnvVarException('MONGO_URI not found');
}
try {
this.connection = await mongoose.connect(MONGO_URI, {
authMechanism: 'DEFAULT',
dbName: APP_NAME || 'test',
});
this.logger.debug('Database connected', { module: this.module });
return this.connection;
} catch (error) {
this.logger.error('Database connection failed', { module: this.module });
throw error;
}
}
public disconnect(): void {
if (this.connection) {
this.connection.disconnect();
this.logger.debug('Database disconnected', { module: this.module });
return;
}
this.logger.error('Database connection not found', { module: this.module });
return;
}
}