Nested Yaml question

Hi. I was using version 2.10.5 and my code was able to process nested yamls correctly. With version 2.12.2 I am not able to make it work.

Code:

YAMLMapper yamlMapper = new YAMLMapper(new YAMLFactory().enable(YAMLGenerator.Feature.MINIMIZE_QUOTES));
yamlMapper.writerWithDefaultPrettyPrinter().writeValue(new File("output.yaml"), resource.getResource());

Output with version 2.10.5

---
apiVersion: v1
kind: MyKind
metadata:
  name: example
data:
  config.yaml: |
    lowercaseOutputName: true
    rules:
    - pattern: "metric<name=(.+)><>(\\w+)"
      name: "metric_$1_$2"
      type: "GAUGE"

Output with version 2.12.2

---
apiVersion: v1
kind: MyKind
metadata:
  name: example
data:
  config.yaml: "lowercaseOutputName:\
    \ true\nrules:\n- pattern: \"metric<name=(.+)><>(\\\\w+)\"\n  name:\
    \ \"metric_$1_$2\"\n  type: \"GAUGE\"\n"

Am I missing some serialization option?

[cowtowncoder]

Yes. This is difficult because leaving out quoting is dangerous. But I know that use case of “just leave out minimally processed chunk to use in k8s manifests (Helm Charts, whatever)” is pretty common and this is problematic for user-editability.

This is probably related to #246.

[cowtowncoder]

Also forgot to mention that a unit test would be needed to show details (explanation alone is not sufficient to reproduce). It would be good to have a small reproduction, but I’ll proceed with #246 since I think that will resolve this issue too.