Observation text publisher

[jonatan-ivanov]

Example output:

START - name='sample.operation', contextualName='CALL sampleOperation', error='null', lowCardinalityTags=[a='1'], highCardinalityTags=[time='2022-02-19T00:29:08.937229Z'], map=[class io.micrometer.api.instrument.Timer$Sample='io.micrometer.api.instrument.Timer$Sample@2a18f23c']
 OPEN - name='sample.operation', contextualName='CALL sampleOperation', error='null', lowCardinalityTags=[a='1'], highCardinalityTags=[time='2022-02-19T00:29:08.937229Z'], map=[class io.micrometer.api.instrument.Timer$Sample='io.micrometer.api.instrument.Timer$Sample@2a18f23c']
ERROR - name='sample.operation', contextualName='CALL sampleOperation', error='java.io.IOException: simulated', lowCardinalityTags=[a='1'], highCardinalityTags=[time='2022-02-19T00:29:08.937229Z'], map=[class io.micrometer.api.instrument.Timer$Sample='io.micrometer.api.instrument.Timer$Sample@2a18f23c']
CLOSE - name='sample.operation', contextualName='CALL sampleOperation', error='java.io.IOException: simulated', lowCardinalityTags=[a='1'], highCardinalityTags=[time='2022-02-19T00:29:08.937229Z'], map=[class io.micrometer.api.instrument.Timer$Sample='io.micrometer.api.instrument.Timer$Sample@2a18f23c']
 STOP - name='sample.operation', contextualName='CALL sampleOperation', error='java.io.IOException: simulated', lowCardinalityTags=[a='1', className='CustomContext', localClassName='CustomContext'], highCardinalityTags=[time='2022-02-19T00:29:08.937229Z', userId='55d37607-6db0-4e36-a2f2-e7978906de8a', localUserId='55d37607-6db0-4e36-a2f2-e7978906de8a'], map=[class io.micrometer.api.instrument.Timer$Sample='io.micrometer.api.instrument.Timer$Sample@2a18f23c']

---

sample.operation(TIMER)[a='1', className='CustomContext', error='simulated', localClassName='CustomContext']; count=1.0, total_time=1.036482778 seconds, max=1.036482778 seconds

[marcingrzejszczak]

Lgtm, I've added a small remark

[marcingrzejszczak]

Maybe we should return the removed object?

[jonatan-ivanov]

👍🏼 I just moved this method, did not change the signature but we should definitely do this.

[shakuzen]

Looks like a pretty awesome debugging tool to me. Maybe we want to consider some kind of debug option that registers this.

[jonatan-ivanov]

@shakuzen 👍🏼 I'm going to implement this soon.