How to correctly set up MongoDB Persistence?

Setup, Configuration and Use Beginners
1

I tried to configure MongoDB persistence to store temperatures in the following way.

  1. I defined MongoDB’s url, db and collection name

$ grep mongodb configurations/openhab.cfg

mongodb:url=mongodb://127.0.0.1:27017
mongodb:database=openhab
mongodb:collection=openhab

  1. I defined a persistence model (copied from rrd4j.persist present in the demo)

$ cat configurations/persistence/mongodb.persist

Strategies {
everyMinute : “0 * * * * ?”
}

Items {
DemoSwitch,NoOfLights,Window_GF_Toilet,Heating* : strategy = everyChange, everyMinute, restoreOnStartup

Temperature*,Weather_Chart* : strategy = everyMinute, restoreOnStartup

}

  1. the rule is defined by:

rule “Update max and min temperatures”
when
Item Weather_Temperature changed or
Time cron “0 0 0 * * ?” or
System started
then
postUpdate(Weather_Temp_Max, Weather_Temperature.maximumSince(now.toDateMidnight, “mongodb”).state)
postUpdate(Weather_Temp_Min, Weather_Temperature.minimumSince(now.toDateMidnight, “mongodb”).state)

logInfo("Weather", "Temperature evolved of " + Weather_Temperature.deltaSince(now.minusMinutes(2)) + " degrees in 2 minutes.")
logInfo("Weather", "Midnight: " + now.toDateMidnight.toString)

end

The item Weather_Temperature gets temperature via a MQTT topic, the UI is properly updated, but I don’t have any values in the MongoDB instance.

At startup I have:

2015-08-18 16:09:51.835 [WARN ] [.o.c.p.e.PersistenceExtensions] - There is no queryable persistence service registered with the name ‘mongodb’

and while running I get several:

2015-08-18 16:11:00.013 [WARN ] [.m.i.MongoDBPersistenceService] - MongoDB not initialized

I tested MongoDB with its client and it works properly, I also tried to insert some test data and everything is ok. Why am I not able to “convince” OpenHab to insert data in MongoDB?

2

Hi,

I just wanted to try mongodb and ran into exact the same issue only I have not the MongoDB not initialized message, but the There is no queryable persistence service registered with the name ‘mongodb’.
Did you get this going somehow?

Thanks

Nico

3

Have you verified that the binding .jar for it is in your addons folder?