shutdown doesn't complete

[Gibheer]

Describe the bug

When stopping serving kratos it doesn't shutdown completely and just hangs around. I have to kill -9 the process to make it stop.

Reproducing the bug

Steps to reproduce the behavior:

1. Run ./kratos serve --config kratos.yaml with minimal settings
2. Press ctrl+c to stop the daemon

Server logs

./kratos serve --config kratos.yaml
INFO[0002] Config file loaded successfully.              path=kratos.yaml
INFO[0002] Software quality assurance features are enabled. Learn more at: https://www.ory.sh/docs/ecosystem/sqa 
INFO[0002] Starting the admin httpd on: 0.0.0.0:4434    
INFO[0002] Starting the public httpd on: 0.0.0.0:4433   
^CINFO[0009] Public httpd was shutdown gracefully         
INFO[0009] Admin httpd was shutdown gracefully          
^C^C^C

Server configuration

---
dsn: "postgres://kratos:@pg1.example.org/iam?sslmode=disable"

hashers:
  argon2:
    memory: 1048576
    iterations: 2
    parallelism: 4
    salt_length: 16
    key_length: 32

courier:
  smtp:
    connection_uri: smtps://localhost/
    from_address: iam@example.org

identity:
  traits:
    default_schema_url: http://gibheer.zero-knowledge.org/default_identity.json

selfservice:
  logout:
    redirect_to: https://example.org

urls:
  profile_ui: https://iam.example.org
  mfa_ui: https://iam.example.org/mfa
  login_ui: https://iam.example.org/login
  registration_ui: https://iam.example.org/register
  error_ui: https://iam.example.org/failed
  verify_ui: https://iam.example.org/verify
  default_return_to: https://example.org
  self:
    public: "http://0.0.0.0:8080"
    admin: "http://0.0.0.0:9292"

Expected behavior

I should be able to stop the daemon either with ctrl-c or using a normal kill.

Environment

• Version: master, 537d496
• Environment: FreeBSD 12.1-RELEASE-p2, Go 1.14

[aeneasr]

Thank you, tracked

[Gibheer]

From some testing I have figured out that the context given to courier.Work doesn't work, because it is a simple Background worker, which is never canceled.

From what I can tell, the background context would need to be extended with WithCancel and extended with a signal handler.
The other way would be to adopt the graceful package.

I will see if I can adapt the code for the latter option, maybe I can get it working.