ENH: Generalize GA to work with MCF API

[tshauck]

Right now the Google Analytics functionality is too specific to the Core Reporting API. It should be generalized to handle MultiChannel Attribution as well.

For example,

def _get_col_names(header_info):
    return [x['name'][3:] for x in header_info]

Would break because headers in are prepended with mcf: in the MultiChannel Attribution API.

[jreback]

@tshauck if you are interested in working on this, ok? but can you explain the usecase a bit more and where you think ga should be going?

[tshauck]

@jreback My thought is that Google Analytics actually has several APIs: Core Reporting (currently the only one implemented), MultiChannel Attribution, MultiChannel Interaction, and Management; so it would nice to have access the rest of the data as well.

The issue right now, is that the way some of the helper functions are implemented they're too specific to the Core Reporting API and won't generalize. I.e. if _get_col_names was implemented as

def _get_col_names(header_info):
    return [x.split()[1] for x in header_info]

The ga module would be in a better position to handle more GA APIs w/ the same code.

[jreback]

@tshauck ok.....pls put together something (if you want able), on how you think the GA infrastructure should be changed going forward. Their are several open issues relating to GA (filter on the Google I/O label which also includes BigQuery, so that's separate).

[jreback]

closing as deprecating ga in #11308