grafana-source bogus config error

[David O Neill]

On relating peometheus2 to grafana via:

juju add-relation grafana:grafana-source prometheus2:grafana-source

The data source generated by the relation is bogus.

Visit the datasource in grafana: http://10.0.8.235:3000/datasources/edit/1/

An unexpected error happened
Details
TypeError: Cannot read property 'timeInterval' of undefined

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    in r
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[David O Neill (dmzoneill)]

What gets added when related to charm-prometheus-ceph-exporter
sqlite> .databases
main: /var/lib/grafana/grafana.db
sqlite> select * from data_source;
1|1|0|prometheus|prometheus - Juju generated source|proxy|http://10.0.8.89:9090||||0|||0||2020-09-28 15:47:10|2020-09-28 15:47:10|0|||799145714

Delete it
sqlite> delete from data_source;

Add the datasource manually
sqlite> select * from data_source;
2|1|2|prometheus|prometheus - Juju generated source|proxy|http://10.0.8.89:9090||||0|||1|{}|2020-09-29 09:59:39|2020-09-29 10:00:51|0|{}|0|a9bZtTFMz

clearly a difference

[David O Neill (dmzoneill)]

https://code.launchpad.net/~llama-charmers/charm-grafana/+git/charm-grafana/+merge/391521