A handler class which buffers logging records in memory, periodically flushing them to a target handler. Flushing occurs whenever the buffer is full, or when an event of a certain severity or greater is seen.
There are no implemented interfaces.
There are no attributes in this class.
acquire()
Acquire the I/O thread lock.
addFilter(filter)
Add the specified filter to this handler.
close()
Flush, set the target to None and lose the buffer.
createLock()
Acquire a thread lock for serializing access to the underlying I/O.
emit(record)
Emit a record.
Append the record. If shouldFlush() tells us to, call flush() to process the buffer.
filter(record)
Determine if a record is loggable by consulting all the filters.
The default is to allow the record to be logged; any filter can veto this and the record is then dropped. Returns a zero value if a record is to be dropped, else non-zero.
flush()
For a MemoryHandler, flushing means just sending the buffered records to the target, if there is one. Override if you want different behaviour.
format(record)
Format the specified record.
If a formatter is set, use it. Otherwise, use the default formatter for the module.
handle(record)
Conditionally emit the specified logging record.
Emission depends on filters which may have been added to the handler. Wrap the actual emission of the record with acquisition/release of the I/O thread lock. Returns whether the filter passed the record for emission.
handleError(record)
Handle errors which occur during an emit() call.
This method should be called from handlers when an exception is encountered during an emit() call. If raiseExceptions is false, exceptions get silently ignored. This is what is mostly wanted for a logging system - most users will not care about errors in the logging system, they are more interested in application errors. You could, however, replace this with a custom handler if you wish. The record which was being processed is passed in to this method.
release()
Release the I/O thread lock.
removeFilter(filter)
Remove the specified filter from this handler.
setFormatter(fmt)
Set the formatter for this handler.
setLevel(level)
Set the logging level of this handler.
setTarget(target)
Set the target handler for this handler.
shouldFlush(record)
Check for buffer full or a record at the flushLevel or higher.
There are no known subclasses.