Typeorm singleton with serverless-offline

Issue type:

[ x] question [ ] bug report [ ] feature request [ ] documentation issue

Database system/driver:

[ ] cordova [ ] mongodb [ ] mssql [ x] mysql / mariadb [ ] oracle [ ] postgres [ ] sqlite [ ] sqljs [ ] react-native [ ] expo

TypeORM version:

[x ] latest [ ] @next [ ] 0.x.x (or put your version here)

Steps to reproduce or a small repository showing the problem:

Crossposting https://github.com/dherault/serverless-offline/issues/468 hoping someone might have some insight. Using TypeOrm with the Serverless.com framework and serverless-offline to develop my lambda functions locally. On the actual deploy code, the singleton works fine but serverless-offline causes issues with this.

Since I’m using Typeorm, serverless, serverless-typescript and serverless-offline this is just trying to make all these packages work together, hoping someone has run into this before and knows the secret.

[DennisKo]

So I am having similiar problems. I am using this db manager class to handle connections:

import {
  Connection,
  ConnectionManager,
  ConnectionOptions,
  createConnection,
  getConnectionManager
} from "typeorm";
import User from "./entity/User";


export default class Database {
  private connectionManager: ConnectionManager;

  constructor() {
    this.connectionManager = getConnectionManager();
  }

  public async getConnection(): Promise<Connection> {
    const CONNECTION_NAME = `default`;
    try {
      let connection: Connection;
      if (this.connectionManager.has(CONNECTION_NAME)) {
        connection = await this.connectionManager.get(CONNECTION_NAME);
        if (!connection.isConnected) {
          connection = await connection.connect();
        }
      } else {
        const connectionOptions: ConnectionOptions = {
          // ...options
          entities: [User]
        };

        connection = await createConnection(connectionOptions);
      }
      return connection;
    } catch (error) {
      console.log("DB CONNECTION ERROR: ", error);
      throw new Error();
    }
  }
}

Every first DB call after serverless offline start succeeds but when I do another call I get:

{ RepositoryNotFoundError: No repository for "User" was found. Looks like this entity is not registered in current "default" connection?
    at new RepositoryNotFoundError (/home/dennis/omagram-api/src/error/RepositoryNotFoundError.ts:10:9)
    at EntityManager.getRepository (/home/dennis/omagram-api/src/entity-manager/EntityManager.ts:730:19)
    at Connection.getRepository (/home/dennis/omagram-api/src/connection/Connection.ts:325:29)
    at Function.BaseEntity.getRepository (/home/dennis/omagram-api/src/repository/BaseEntity.ts:85:27)
    at Function.BaseEntity.create (/home/dennis/omagram-api/src/repository/BaseEntity.ts:140:30)
    at Object.<anonymous> (/home/dennis/omagram-api/.webpack/service/src/webpack:/src/resolvers.ts:34:33)
    at Generator.next (<anonymous>)
    at fulfilled (/home/dennis/omagram-api/.webpack/service/src/api.js:328:58)
  name: 'RepositoryNotFoundError',
  message:
   'No repository for "User" was found. Looks like this entity is not registered in current "default" connection?' }

I think I am pretty close to solving this without any dirty hacks but how could I proceed from here?

[ymoran00]

Just for future generations: skipCacheInvalidation doesn’t exist anymore in new sls offline. Instead use --allowCache.