Added live data functionnality + some docs in Python and JS code

seaweb.py

@@ -66,7 +66,7 @@ def get_update(path=None):
         logging.info('UPDATE %s %s', client.id, socket.getfqdn(flask.request.remote_addr.split(':')[-1]))
         #msg = dict(type='id', id=client.id, title=instrument.title);
         #yield to_json_sse(msg)
-        msg = dict(type='id', id=client.id, instrument=instrument.title, device=instrument.device);
+        msg = dict(type='id', id=client.id, instrument=instrument.title, device=instrument.device)
         yield to_json_sse(msg)
         try:
             lastmsg = time.time()
@@ -498,6 +498,7 @@ class SeaGraph:
         self.livemode = self.HISTORICAL
         self.time = [0, 0]
         self.lastvalues = {}
+        self.variables = []
 
     def strip_future(self, result):
         'strip future points (happens only on dummy test_day)'
@@ -527,13 +528,13 @@ class SeaGraph:
         self.last_t = 0
         start, end, now = seagraph.get_abs_time(time + [0])
         self.time = [start, end]
-        self.variables = variables.split(',')
+        variables = variables.split(',')
         self.livemode = self.ACTUAL if end >= now else self.HISTORICAL
         logging.info('LIVE %g %g %d %d', end, now, end >= now, self.livemode)
         self.scanner = seagraph.NumericScanner(instrument.logger_dir, instrument.test_day)
         #result = self.scanner.get_message(self.variables, self.time)
         #self.time[0] = self.time[1]
-        result = self.scanner.get_message(self.variables, self.time, show_empty=True)
+        result = self.scanner.get_message(variables, self.time, show_empty=True)
         self.strip_future(result)
         #for var in ('treg.set.reg', 'mf'):
         #    curve = result.get(var,[(0,0)])
@@ -557,6 +558,8 @@ class SeaGraph:
         scanner = seagraph.VarsScanner(instrument.logger_dir, instrument.test_day)
         result = dict(type='var_list')
         result['blocks'] = list(scanner.get_message(time[-1]).values())
+        # updates the self.variables attribute to keep track of the available variables
+        self.variables = [variable["name"] for block in result['blocks'] for variable in block["curves"]]
         return result
 
     def w_updategraph(self):