SIGINT Reproduction Repo

The application will not exit properly when receiving SIGINT while active http requests are being made. This example shows prometheus polling the server and when a SIGINT is received, the foreground returns to the terminal prompt, but the process remains alive and continues to output logging info (via morgan) to the terminal

Starting The App

Install the dependencies via yarn and ensure you are on at least the node version specified in the .nvmrc

Docker is required to start prometheus. Use docker-compose against the file for your operating system (windows not included)

Example

docker-compose -f docker-compose.darwin.yml up -d

will start prometheus.

Start the nest process via

yarn start

and send a SIGINT whenever to see the behavior.

Output

nest-sigint-no-exit on  master [!?] via  v14.15.1 on ☁️  (us-east-1) took 3s
❯ yarn start
yarn run v1.22.10
$ nest start
[Nest] 9172  - 09/28/2021, 11:05:07 AM     LOG [NestFactory] Starting Nest application...
[Nest] 9172  - 09/28/2021, 11:05:07 AM     LOG [InstanceLoader] AppModule dependencies initialized +26ms
[Nest] 9172  - 09/28/2021, 11:05:07 AM     LOG [RoutesResolver] AppController {/}: +5ms
[Nest] 9172  - 09/28/2021, 11:05:07 AM     LOG [RouterExplorer] Mapped {/, GET} route +2ms
[Nest] 9172  - 09/28/2021, 11:05:07 AM     LOG [NestApplication] Nest application successfully started +2ms
[Nest] 9172  - 09/28/2021, 11:06:57 AM     LOG GET /metrics 404 2.433 ms - 70

^C

nest-sigint-no-exit on  master [!?] via  v14.15.1 on ☁️  (us-east-1) took 1m56s
❯ [Nest] 9172  - 09/28/2021, 11:07:02 AM     LOG GET /metrics 404 0.452 ms - 70