influxdb: add helper to core + use it in bluemaestro/lastfm/rescuetime

my/bluemaestro.py

@@ -192,32 +192,8 @@ def dataframe() -> DataFrameT:
 
 
 def fill_influxdb() -> None:
-    from itertools import islice
-    from .core.common import asdict
-
-    from influxdb import InfluxDBClient # type: ignore
-    client = InfluxDBClient()
-    db = 'db'
-    mname = __name__.replace('.', '_')
-    client.delete_series(database=db,  measurement=mname)
-    def dissoc(d, k):
-        del d[k]
-        return d # meh
-    jsons = ({
-        'measurement': mname,
-        # todo maybe good idea to tags with database file/name? to inspect inconsistencies etc..
-        # 'tags': {'activity': e.activity},
-        'time': e.dt.isoformat(),
-        'fields': dissoc(asdict(e), 'dt'),
-    } for e in measurements())
-    from more_itertools import chunked
-    # "The optimal batch size is 5000 lines of line protocol."
-    # some chunking is def necessary, otherwise it fails
-    for chunk in chunked(jsons, n=5000):
-        cl = list(chunk)
-        logger.debug('writing next chunk %s', cl[-1])
-        client.write_points(cl, database=db)
-    # todo "Specify timestamp precision when writing to InfluxDB."?
+    from .core import influxdb
+    influxdb.fill(measurements(), measurement=__name__)
 
 
 def check() -> None: