My goal is to associate key-value pairs with my log messages so that I can better filter for associated messages. For example, I’d like to associate Line=Line1 for any log messages related to Line1. These messages might come from a multitude of loggers with a variety of message contents.
My plan was to do this using MDC:
def getLogger(loggerName, context=None):
"""Return a logger with optional MDC
loggerName (String): the name of the logger to be built
context ({String: String}): key-value pairs for MDC
"""
loggerBuilder = LoggerEx.newBuilder()
if context:
contextualizeLoggerBuilder(loggerBuilder, context)
logger = loggerBuilder.build(loggerName)
return logger
def contextualizeLoggerBuilder(loggerBuilder, context):
"""Add key-value context pairs to a LoggerBuilder object.
loggerBuilder (LoggerEx.LoggerBuilder): the LoggerBuilder object to contextualize
context ({String: String}): key-value pairs for MDC
"""
keyValueList = [a for tup in context.items() for a in tup] # expand tuple list into plain list
loggerBuilder.mdcContext(keyValueList)
Here are my applied filters in the log. I’ve applied two filters: Line=Line4 and MachineArea=Depal. I would expect that only entries meeting both criteria are shown.
Unfortunately, this is my output. It looks like an entry that meets either criteria is included:
Is this is expected behavior? Is there a fundamental problem with how I’m going about this?
