ConditionalExtraFormatter

Log formatter that appends selected extra fields when present.

Records logged with extra=\{'client_peer_id': ..., 'client_type': ...\} get those fields appended as key=value pairs; records without them format normally, so one formatter serves both peer-scoped and global log lines.

Attributes

attributeextra_fieldsList[str]

= extra_fields or ['client_peer_id', 'client_type']

Functions

func__init__(self, fmt=None, datefmt=None, style='%', extra_fields=None) -> None

Source Code

def __init__(self, fmt: Optional[str] = None, datefmt: Optional[str] = None,
             style: str = '%', extra_fields: Optional[List[str]] = None) -> None:
    super().__init__(fmt, datefmt, style)
    self.extra_fields: List[str] = extra_fields or ['client_peer_id', 'client_type']

paramself

paramfmtOptional[str]

= None

paramdatefmtOptional[str]

= None

paramstylestr

= '%'

paramextra_fieldsOptional[List[str]]

= None

Returns

None

funcformat(self, record) -> str

Format the record, appending any configured extra fields it carries.

Source Code

def format(self, record: logging.LogRecord) -> str:
    """Format the record, appending any configured extra fields it carries."""
    result = super().format(record)
    extra_parts = []
    for field in self.extra_fields:
        value = getattr(record, field, None)
        if value is not None:
            extra_parts.append(f"{field}={value}")
    if extra_parts:
        result = f"{result} | {' '.join(extra_parts)}"
    return result

paramself

paramrecordlogging.LogRecord

Returns

str

ConditionalExtraFormatter

Attributes

Functions

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