quoted-strings - support JSON encoded data in single quotes

[Constantin07]

For some Kubernetes manifests there are annotation with values in JSON format which have to be quoted in single quotes.

One example is AWS Load balancer Controller: https://kubernetes-sigs.github.io/aws-load-balancer-controller/v2.2/guide/ingress/annotations/

Annotation keys and values can only be strings. Advanced format should be encoded as below:
...
json: 'jsonContent'

Linting this fails:

---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: echoserver
  annotations:
   ...
    alb.ingress.kubernetes.io/actions.ssl-redirect: '{"Type": "redirect", "RedirectConfig": { "Protocol": "HTTPS", "Port": "443", "StatusCode": "HTTP_301"}}'
    alb.ingress.kubernetes.io/listen-ports: '[{"HTTPS": 443}]'

with error:

aws-loadbalancer-controller/test.yml
  83:53     error    string value is not quoted with double quotes  (quoted-strings)
  86:45     error    string value is not quoted with double quotes  (quoted-strings)

Would be possible to add support for this case instead of settigng quote-type: any (by default we use double)?

[andrewimeson]

What would the logic for this have to look like to be reliable? Suppose quote-type is double, would you expect that a string that contains one or more literal " characters should be exempt from the rule? Would some users not like this, because you can still escape " if you really want to keep strict double quoting?

alb.ingress.kubernetes.io/actions.ssl-redirect: "{\"Type\": \"redirect\", \"RedirectConfig\": { \"Protocol\": \"HTTPS\", \"Port\": \"443\", \"StatusCode\": \"HTTP_301\"}}"

Another workaround is to make it a multiline scalar.

alb.ingress.kubernetes.io/actions.ssl-redirect: >-
  {"Type": "redirect", "RedirectConfig": { "Protocol": "HTTPS", "Port": "443", "StatusCode": "HTTP_301"}}

I would personally style it with the JSON pretty-printed.

alb.ingress.kubernetes.io/actions.ssl-redirect: >-
  {
    "Type": "redirect",
    "RedirectConfig": {
      "Protocol": "HTTPS",
      "Port": "443",
      "StatusCode": "HTTP_301"
    }
  }

[Constantin07]

Thanks @andrewimeson, I think your suggestion with JSON pretty-printed works just fine.