When some rules of Structured logging are followed whilst others are ignored, you find yourself in the semi structured logs territory.
Common semi-structured logs
- Not having a unique property to differentiate/group logs
- Encoding variables to the message string and not in the data format.
Reference
In contrast to unstructured and structured logs, semi-structured logs contain both objects and strings. They are easily understood by humans and machines alike. However, their formats are not standardized, making them less convenient than standardized logs
— semi structured logs from Structured Logging highlights