A mqtt subscriber-client that lets you to save/organize your data messages into filesystem directory.

This helps in organizing your subscribed data in neat hierarchy.

mqtt-dirpub is based on original sub_client.c that comes with mosquitto.

--fmask <file-mask>

file-mask - path to message outfile.

allowed masks are:

@[epoch|date|year|month|day|datetime|hour|min|sec|id|topic[1-9]]

eg. --fmask '/tmp/msgs/@year/@month@-@day/@topic/@hour@min' will create file: /tmp/msgs/2010/10-29/topic/0540

Note: topic/s having hierarchy structure gets further resolved to directory.

--overwrite

Works only with --fmask. This option starts client in overwrite mode. Caution: The existing data files get overwritten with every messages received.

--nodesuffix

Works only with --fmask. This option provides file suffix for leaf/text nodes.

• libmosquitto

Your can also drop/replace sub_client.c file in mosquitto-<ver>/client/ directory to compile with parent package.