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63 lines
2.0 KiB
Plaintext
63 lines
2.0 KiB
Plaintext
---
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title: Event Logging
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sidebar_position: 9
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version: 1
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---
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# Logging
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## Event Logging
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Superset by default logs special action events in its internal database (DBEventLogger). These logs can be accessed
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on the UI by navigating to **Security > Action Log**. You can freely customize these logs by
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implementing your own event log class.
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**When custom log class is enabled DBEventLogger is disabled and logs
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stop being populated in UI logs view.**
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To achieve both, custom log class should extend built-in DBEventLogger log class.
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Here's an example of a simple JSON-to-stdout class:
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```python
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def log(self, user_id, action, *args, **kwargs):
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records = kwargs.get('records', list())
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dashboard_id = kwargs.get('dashboard_id')
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slice_id = kwargs.get('slice_id')
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duration_ms = kwargs.get('duration_ms')
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referrer = kwargs.get('referrer')
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for record in records:
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log = dict(
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action=action,
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json=record,
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dashboard_id=dashboard_id,
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slice_id=slice_id,
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duration_ms=duration_ms,
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referrer=referrer,
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user_id=user_id
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)
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print(json.dumps(log))
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```
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End by updating your config to pass in an instance of the logger you want to use:
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```
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EVENT_LOGGER = JSONStdOutEventLogger()
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```
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## StatsD Logging
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Superset can be configured to log events to [StatsD](https://github.com/statsd/statsd)
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if desired. Most endpoints hit are logged as
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well as key events like query start and end in SQL Lab.
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To setup StatsD logging, it’s a matter of configuring the logger in your `superset_config.py`.
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If not already present, you need to ensure that the `statsd`-package is installed in Superset's python environment.
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```python
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from superset.stats_logger import StatsdStatsLogger
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STATS_LOGGER = StatsdStatsLogger(host='localhost', port=8125, prefix='superset')
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```
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Note that it’s also possible to implement your own logger by deriving
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`superset.stats_logger.BaseStatsLogger`.
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