### Initialize and Use ObservabilityService

Source: https://github.com/splunk/addonfactory-solutions-library-python/blob/develop/docs/release_8_0_0.md

Initializes the ObservabilityService with modular input details and logs event counts and bytes. Ensure `ta_name` and `ta_version` are provided explicitly when not running in a full Splunk environment.

```python
import logging
from solnlib.observability import ObservabilityService, ATTR_MODINPUT_NAME

logger = logging.getLogger(__name__)

obs = ObservabilityService(
    modinput_type="my-input",
    logger=logger,
    ta_name="my_ta",
    ta_version="1.0.0",
)

# In your event collection loop:
if obs.event_count_counter:
    obs.event_count_counter.add(len(events), {ATTR_MODINPUT_NAME: stanza_name})
if obs.event_bytes_counter:
    obs.event_bytes_counter.add(total_bytes, {ATTR_MODINPUT_NAME: stanza_name})
```

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