mqtt-jsonsplit is a simple Python script that listens to JSON messages on a MQTT topic. It will then recursively split JSON objects and arrays into their components and republish them under a subtopic. For example, if mqttsplit receives the following message on test:

{"foo": {"bar": "baz"}, "colors": ["red", "green", "blue"]}

It will publish the following messages (in order):

test/foo          {"bar":"baz"}
test/foo/bar      "baz"
test/colors       ["red","green","blue"]
test/colors/0     "red"
test/colors/1     "green"
test/colors/2     "blue"

This is useful with programs like Telegraf that spit out hierarchical JSON data. It allows you to subscribe to only the subset of the message that interests you.

mqttsplit silently ignores messages that are invalid JSON. Wildcards are allowed, but be careful with #: you probably don't want mqttsplit to split its own output.

usage: mqttsplit [-h HOST] [-u USER] [-P PASS] [-k SECONDS] [-p PORT] [--ssl]
                 [--debug] [--help] [-v]
                 TOPIC [TOPIC ...]

positional arguments:
  TOPIC                 topics to subscribe to

optional arguments:
  -h HOST, --host HOST
  -u USER, --username USER
  -P PASS, --password PASS
  -k SECONDS, --keepalive-time SECONDS
  -p PORT, --port PORT
  --ssl
  --debug
  --help
  -v, --version         show program's version number and exit

Copyright (c) 2016, 2017 Wander Nauta

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of this software and associated documentation files (the "Software"), to deal
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