Dear all, Below is a digest of conversation between me and vitrage PTL lfat. It clarifies some of my questions and I hope it will also be useful for developers who are watching vitrage project.
- relationship between entities Examples of "on" and "contain" given in document. But not sure how to extend it, e.g. adding a new relationship such as "equivalent" [Ifat] Right now we have template validation code, which checks that the relationship type is one of a few predefined types. I don’t think this is the right behaviour. It is very reasonable for a datasource to add its own relationship types. I think we should modify the code, and maybe have a configuration file(s) with all possible relationship types. This way, we can still do the validation but it will be easy to support new relationship types. You are welcome to add a blueprint for that. - rule live update Is it possible to modify the template on line without interrupting the service? [Ifat] Not yet, but this is in our roadmap, see https://blueprints.launchpad.net/vitrage/+spec/crud-templates-api - condition format Example of "not" is given in https://github.com/openstack/vitrage/blob/master/doc/source/vitrage-template-format.rst#condition-format but negation is marked to be done in https://github.com/openstack/vitrage/blob/master/doc/source/vitrage-template-format.rst#negation . So what is the current situation? Is multiple ( more than three ) conditions combination supported? [Ifat] The negation is not marked as done. It says: “We *need to* support ‘not' operator”. Again, this is in our roadmap. Regarding multiple conditions, we don’t limit their number. - performance How many rules can be evaluate per second? Is there a benchmark? [Ifat] We did not perform such a benchmark yet. - supported data source Examples of nagios and nova are given. Is there any limitation on the required protocol? e.g. retrieving data from http, snmp, odbc. [Ifat] You can add whatever datasource that you want, and get data in any format. It is the datasource responsibility to convert this data into Vitrage format, so it can be added to the graph.
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