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Structured Log Handler
Logging handler for printing formatted structured logs to standard output.
class google.cloud.logging_v2.handlers.structured_log.StructuredLogHandler(*, labels=None, stream=None, project_id=None, json_encoder_cls=None, **kwargs)
Bases: logging.StreamHandler
Handler to format logs into the Cloud Logging structured log format,
and write them to standard output
Parameters
labels (Optional[dict]) – Additional labels to attach to logs.
stream (Optional[IO]) – Stream to be used by the handler.
project (Optional[str]) – Project Id associated with the logs.
json_encoder_cls (Optional[Type[JSONEncoder]]) – Custom JSON encoder. Defaults to json.JSONEncoder
emit(record)
Emit a record.
If a formatter is specified, it is used to format the record.
The record is then written to the stream with a trailing newline. If
exception information is present, it is formatted using
traceback.print_exception and appended to the stream. If the stream
has an ‘encoding’ attribute, it is used to determine how to do the
output to the stream.
Format the message into structured log JSON.
:param record: The log record.
:type record: logging.LogRecord
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Last updated 2025-10-10 UTC.
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