get map stream -> instrument from servicemanager for feeder

feeder.py

@@ -25,9 +25,14 @@ def main(dbname=None):
     db = SEHistory(dbname, access='write')
     db.enable_write_access()
 
+    host = socket.gethostname().split('.')[0]
     fm = FrappyManager()
     fm.get_info()
-    host = socket.gethostname().split('.')[0]
+    # create map to get instrument from internal stream uri
+    insmap = db.instrument_by_stream
+    for ins, ports in fm.info.items():
+        for p in ports.values():
+            insmap[f'{host}:{p}'] = ins
     cfginfo = {}
     for ins, procs in fm.get_procs(cfginfo=cfginfo).items():
         for service in procs:

seinflux.py

@@ -35,6 +35,7 @@ class SEHistory(InfluxDBWrapper):
         parser.optionxform = str
         parser.read([Path('~/.config/sehistory').expanduser()])
         section = parser[dbname] if dbname else parser[parser.sections()[0]]
+        self.instrument_by_stream = {}
         super().__init__(*(section[k] for k in ('uri', 'token', 'org', 'bucket')), access=access)
 
     def curves(self, start=None, stop=None, measurement=('*.value', '*.target'), field='float',
@@ -407,4 +408,6 @@ class SEHistory(InfluxDBWrapper):
         self.flush()
 
     def add_stream(self, value, tags, key, ts):
+        if value == '':  # unknown instrument
+            value = self.instrument or self.instrument_by_stream.get(key, '0')
         self.set_instrument(key, value, ts, **tags)

streams.py

@@ -254,9 +254,8 @@ class EventStream:
     # note: a stream with buffered content might not be ready to emit any event, because
     # of filtering
 
-    def __init__(self, *udp, instrument=None, **streams):
+    def __init__(self, *udp, **streams):
         self.streams = streams
-        self.instrument = instrument
         self.udp = {v.socket.fileno(): v for v in udp}
 
     def wait_ready(self, timeout):