Support for Prisma ORM

Is there an existing issue that is already proposing this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe it

Terminus is quite useful for checking the health of your database and it would be great if it would support Prisma ORM.

Describe the solution you’d like

Support for Prisma ORM, similar to TypeOrmHealthIndicator , SequelizeHealthIndicator and MongooseHealthIndicator.

Teachability, documentation, adoption, migration strategy

The terminus recipe in the NestJS docs would need to be updated with a PrismaHealthIndicator.

To the best of my understanding, the change to the documentation would be fairly minimal.

What is the motivation / use case for changing the behavior?

I work at Prisma and we have seen a lot of NestJS users adopting Prisma for the ORM layer in their application. So having better support for the ORM would be great for developers using NestJS with Prisma!

[jfairley]

Btw, in case anyone comes here and just wants a simple health indicator, I have a Stackoverflow answer for it.

https://stackoverflow.com/a/71445270/317951

import { Injectable } from "@nestjs/common";
import { HealthCheckError, HealthIndicator, HealthIndicatorResult } from "@nestjs/terminus";
import { PrismaService } from "./prisma.service";

@Injectable()
export class PrismaHealthIndicator extends HealthIndicator {
  constructor(private readonly prismaService: PrismaService) {
    super();
  }

  async isHealthy(key: string): Promise<HealthIndicatorResult> {
    try {
      await this.prismaService.$queryRaw`SELECT 1`;
      return this.getStatus(key, true);
    } catch (e) {
      throw new HealthCheckError("Prisma check failed", e);
    }
  }
}

[BrunnerLivio]

Thanks for the suggestion! I am open to review any PRs around this!