quark.shares.utils.log

Module Contents

Classes

class quark.shares.utils.log.CustomFormatter(fmt=None, datefmt=None, style='%', validate=True, *, defaults=None)

Formatter instances are used to convert a LogRecord to text.

Formatters need to know how a LogRecord is constructed. They are responsible for converting a LogRecord to (usually) a string which can be interpreted by either a human or an external system. The base Formatter allows a formatting string to be specified. If none is supplied, the style-dependent default value, “%(message)s”, “{message}”, or “${message}”, is used.

The Formatter can be initialized with a format string which makes use of knowledge of the LogRecord attributes - e.g. the default value mentioned above makes use of the fact that the user’s message and arguments are pre- formatted into a LogRecord’s message attribute. Currently, the useful attributes in a LogRecord are described by:

%(name)s Name of the logger (logging channel) %(levelno)s Numeric logging level for the message (DEBUG, INFO,

WARNING, ERROR, CRITICAL)

%(levelname)s Text logging level for the message (“DEBUG”, “INFO”,

“WARNING”, “ERROR”, “CRITICAL”)

%(pathname)s Full pathname of the source file where the logging

call was issued (if available)

%(filename)s Filename portion of pathname %(module)s Module (name portion of filename) %(lineno)d Source line number where the logging call was issued

(if available)

%(funcName)s Function name %(created)f Time when the LogRecord was created (time.time()

return value)

%(asctime)s Textual time when the LogRecord was created %(msecs)d Millisecond portion of the creation time %(relativeCreated)d Time in milliseconds when the LogRecord was created,

relative to the time the logging module was loaded (typically at application startup time)

%(thread)d Thread ID (if available) %(threadName)s Thread name (if available) %(taskName)s Task name (if available) %(process)d Process ID (if available) %(message)s The result of record.getMessage(), computed just as

the record is emitted

format(record: logging.LogRecord) → str

Format the specified record as text.

The record’s attribute dictionary is used as the operand to a string formatting operation which yields the returned string. Before formatting the dictionary, a couple of preparatory steps are carried out. The message attribute of the record is computed using LogRecord.getMessage(). If the formatting string uses the time (as determined by a call to usesTime(), formatTime() is called to format the event time. If there is exception information, it is formatted using formatException() and appended to the message.

class quark.shares.utils.log.DuplicateFilter

Filter instances are used to perform arbitrary filtering of LogRecords.

Loggers and Handlers can optionally use Filter instances to filter records as desired. The base filter class only allows events which are below a certain point in the logger hierarchy. For example, a filter initialized with “A.B” will allow events logged by loggers “A.B”, “A.B.C”, “A.B.C.D”, “A.B.D” etc. but not “A.BB”, “B.A.B” etc. If initialized with the empty string, all events are passed.

filter(record: logging.LogRecord) → bool

Determine if the specified record is to be logged.

Returns True if the record should be logged, or False otherwise. If deemed appropriate, the record may be modified in-place.