import get_experiments

- in case of localhost, remove .psi.ch from normalized host name
+ fix import in t.py
+ allow boolean as selection criterium

influx.py

@@ -338,6 +338,10 @@ class InfluxDBWrapper:
                 fixed_tags[key] = crit
                 dropcols.append(key)
                 crit = f'"{crit}"'
+            elif isinstance(crit, bool):
+                crit = 'true' if crit else 'false'
+                fixed_tags[key] = crit
+                dropcols.append(key)
             elif isinstance(crit, (int, float)):
                 fixed_tags[key] = crit
                 dropcols.append(key)

seinflux.py

@@ -206,25 +206,47 @@ class SEHistory(InfluxDBWrapper):
     def get_experiments(self, start=None, end=None, **tags):
         """get experiments (periods with the same device/stream/instrument combination)
 
-        :param start, end: the time period
+        :param start: start of time period
-        :return: list of tuple(<device>, <stream>, <instrument>)
+        :param end: end of time period
+        :return: list of tuple((<start>, <end>), ('instrument' or 'stream', <value>), dict <stream> of <device>)
         """
 
         interval = 1
         gap = 600
+        eternity = 1e10
         entries = {}
-        end = time.time() + 60
+        if start is None:
-        for rows, key, (tags, _, _) in self.query_gen(
+            previous = {}
-                start, end, _measurement='_stream_', _field='on', interval=interval,
+        else:
-                stream=None, device=None, instrument=None):
+            previous = self.query(None, start, _measurement='_stream_', _field='on', interval=interval,
-            stream = tags.get('stream')
+                                  stream=None, device=None, instrument=None, single=1)
-            instrument = tags.get('instrument')
+        if end is None:
-            device = tags.get('device')
+            nextrow = {}
-            elist = entries.setdefault(instrument or stream, [])
+        else:
-            for row in rows:
+            nextrow = self.query(end, None, _measurement='_stream_', _field='on', interval=interval,
+                                 stream=None, device=None, instrument=None, single=-1)
+        start, end = abs_range(start, end)
+        inperiod = self.query(start, end, _measurement='_stream_', _field='on', interval=interval,
+                              stream=None, device=None, instrument=None)
+        for key, single in previous.items():
+            if key in inperiod:
+                inperiod[key].insert(0, tuple(single))
+            else:
+                inperiod[key] = Table(rows=[tuple(single)], **single.__dict__)
+
+        for key, table in inperiod.items():
+            nextvalue = nextrow.get(key)
+            if nextvalue:
+                print('N', key, nextvalue, table.tags)
+            if nextvalue and not nextvalue[1]:
+                table.append(tuple(nextvalue))
+            stream, instrument, device = [table.tags.get(k, '') for k in ('stream', 'instrument', 'device')]
+            key = ('instrument', instrument) if instrument else ('stream', stream)
+            elist = entries.setdefault(key, [])
+            for row in table:
                 elist.append(row[:2] + (stream, device))
         result = []
-        for ins, rows in entries.items():
+        for key, rows in entries.items():
             rows.sort()
             current = {}  # dict <stream> of [<device>, <start>, <end>]
             chunks = [current]
@@ -237,25 +259,27 @@ class SEHistory(InfluxDBWrapper):
                             continue
                         current = {}
                         chunks.append(current)
-                    current[stream] = [device or stream, ts, end]
+                    current[stream] = [device or stream, ts, eternity]
                 else:
                     prev = current.get(stream)
                     if prev:
                         prev[2] = ts
-            prevchange = 0
+            prevexpt = [0, 0]
             prevdevices = {}  # dict <stream> of <device>
             for chunk in chunks:
                 if chunk:
                     devices = {k: v[0] for k, v in chunk.items() if v[0]}
-                    start = min(t[1] for t in chunk.values())
+                    beg = min(t[1] for t in chunk.values())
-                    if start > prevchange + gap or any(v != devices.get(k) for k, v in prevdevices.items()):
+                    if beg > prevexpt[0] + gap or any(v != devices.get(k) for k, v in prevdevices.items()):
-                        prevchange = start
                         prevdevices = devices
-                        result.append((start, max(t[2] for t in chunk.values()), ins, devices))
+                        if prevexpt[1] > beg:
+                            prevexpt[1] = beg  # shorten previous
+                        prevexpt = [beg, max(t[2] for t in chunk.values()), key, devices]
+                        result.append(prevexpt)
         result.sort()
-        for start, end, ins, devices in result:
+        for expt in result:
-            print(' .. '.join(time.strftime('%Y-%m-%d-%H:%M', time.localtime(t)) for t in (start, end)),
+            if expt[-1] == eternity:
-                  ins, devices)
+                expt[-1] = time.time()
         return result
 
     def set_instrument(self, stream, value, ts=None, guess=True, **tags):

streams.py

@@ -34,7 +34,6 @@ def short_hostname(host):
     host = socket.gethostbyaddr(host)[0]
     if host == 'localhost':
         host = socket.gethostname()
-    else:
     match = re.match(r'([^.-]+)(?:-129129\d{6}|(-[~.]*|)).psi.ch', host)
     if match:
         host = match.group(1) + (match.group(2) or '')

t.py

@@ -1,7 +1,7 @@
 import time
 import math
 import numpy as np
-from sehistory.sehistory import SEHistory
+from seinflux import SEHistory
 from influx import RegExp
 
 DAY = 24 * 3600