Recursively add metadata JSON fields to the tree

[rst0git]

Some annotations contain a JSON string, and this string may include nested arrays and maps. This pull request updates addPodInfoToTree() to recursively add these fields to the output tree using pretty print.

Before:

    ├── kubectl.kubernetes.io/last-applied-configuration
    │   ├── metadata: map[annotations:map[] name:counter-pod namespace:default]
    │   ├── spec: map[containers:[map[args:[-c i=0; while true; do echo $i; i=$(expr $i + 1); sleep 1; done] command:[sh] image:busybox:latest name:counter-container]]]

After:

    ├── kubectl.kubernetes.io/last-applied-configuration
    │   ├── apiVersion: v1
    │   ├── kind: Pod
    │   ├── metadata:
    │   │   ├── annotations:
    │   │   ├── name: counter-pod
    │   │   └── namespace: default
    │   └── spec:
    │       └── containers: 
    │           └── [0]:
    │               ├── args: 
    │               │   ├── [0]: -c
    │               │   └── [1]: i=0; while true; do echo $i; i=$(expr $i + 1); sleep 1; done
    │               ├── command: 
    │               │   └── [0]: sh
    │               ├── image: busybox:latest
    │               └── name: counter-container

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 28 lines in your changes missing coverage. Please review.

Project coverage is 76.42%. Comparing base (c770752) to head (2e305b9).

Files with missing lines	Patch %	Lines
internal/tree.go	0.00%	28 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #149      +/-   ##
==========================================
- Coverage   77.76%   76.42%   -1.35%     
==========================================
  Files          11       11              
  Lines        1417     1442      +25     
==========================================
  Hits         1102     1102              
- Misses        241      266      +25     
  Partials       74       74              

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[github-actions]

Test Results

60 tests  ±0   60 ✅ ±0   1s ⏱️ ±0s
 1 suites ±0    0 💤 ±0 
 1 files   ±0    0 ❌ ±0 

Results for commit 2e305b9. ± Comparison against base commit c770752.

♻️ This comment has been updated with latest results.

[adrianreber]

Nice, I was also thinking about something like that. I am not sure about:

├── args: [
...
└── ]

That look a bit strange. Could this just be left away? Or why do you print it? Any special reason it might be useful?

[snprajwal]

+1, I think we can just leave the braces out, similar to metadata:

[rst0git]

Thanks, I've updated the pull request to remove the brackets in the output.