yuruguo opened a new pull request #12709:
URL: https://github.com/apache/pulsar/pull/12709
### Motivation
Currently, we can get topic internal info through CLI `bin/pulsar-admin
topics info-internal tn1/ns1/tp1`, but I find that what we get is an un
unformatted and unreadable string, as below:
```
"{\"version\":0,\"partitions\":{\"persistent://pulsar/application-f75e774c-7e1e-405a-aa57-bfee90b93923/topic-partition-0\":{\"version\":0,\"creationDate\":\"2021-11-10T12:17:01.397+08:00\",\"modificationDate\":\"2021-11-10T12:17:01.397+08:00\",\"ledgers\":[],\"cursors\":{}},\"persistent://pulsar/application-f75e774c-7e1e-405a-aa57-bfee90b93923/topic-partition-1\":{\"version\":0,\"creationDate\":\"2021-11-10T12:17:01.414+08:00\",\"modificationDate\":\"2021-11-10T12:17:01.414+08:00\",\"ledgers\":[],\"cursors\":{}}}}"
```
The purpose of this PR is to format topic internal info to make it clear and
readable, as below:
```
{
"version": 0,
"partitions": {
"persistent://pulsar/application-f75e774c-7e1e-405a-aa57-bfee90b93923/topic-partition-0":
{
"version": 0,
"creationDate": "2021-11-10T12:17:01.397+08:00",
"modificationDate": "2021-11-10T12:17:01.397+08:00",
"ledgers": [],
"cursors": {}
},
"persistent://pulsar/application-f75e774c-7e1e-405a-aa57-bfee90b93923/topic-partition-1":
{
"version": 0,
"creationDate": "2021-11-10T12:17:01.414+08:00",
"modificationDate": "2021-11-10T12:17:01.414+08:00",
"ledgers": [],
"cursors": {}
}
}
}
```
### Documentation
- [x] `no-need-doc`
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