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deepset-ai--haystack/releasenotes/notes/structured-logging-2d6cef3fee2b4f0e.yaml
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chore: import upstream snapshot with attribution
2026-07-13 13:22:28 +08:00

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YAML

---
features:
- |
Haystack now supports structured logging out-of-the box.
Logging can be separated into 3 categories:
- If [`structlog`](https://www.structlog.org/en/stable/) is not installed, Haystack will
use the standard Python logging library with whatever configuration is present.
- If `structlog` is installed, Haystack will log through [`structlog`](https://www.structlog.org/en/stable/) using
structlog's console renderer.
To disable structlog, set the environment variable `HAYSTACK_LOGGING_IGNORE_STRUCTLOG_ENV_VAR` to `true`.
- To log in JSON, install [`structlog`](https://www.structlog.org/en/stable/) and
- set the environment variable `HAYSTACK_LOGGING_JSON` to `true` or
- enable JSON logging from Python
```python
import haystack.logging
haystack.logging.configure_logging(use_json=True)
```