Added expired=True support

influxdb.py

@@ -116,9 +116,10 @@ class InfluxDataGetter:
             var_param = variable.split(".")
             variable_name_for_query = var_param[0]
             parameter = "value" if len(var_param) == 1 else var_param[1]
-            start_time = int(lastvalues[variable_name_for_query][0]) if variable_name_for_query in lastvalues.keys() else None
-            start_time = start_time if start_time != None and start_time <= end_time else None # to prevent self.lastvalues being changed by w_graph between entrance of graphpoll and poll_last_values
-            points = self._get_last_values(variable_name_for_query,parameter,start_time, end_time)
+            start_time = int(lastvalues[variable][0]) if variable in lastvalues.keys() else None #if the call to poll_last_values is more recent than getgraph, we trigger only one value, which is the last one available from 0 to end_time
+            points = []
+            if start_time == None or start_time < end_time: # start_time might be more recent than end_time if getgraph is called between graphpoll and pol_last_values (influxgraph.py)
+                points = self._get_last_values(variable_name_for_query,parameter,start_time, end_time)
             if len(points) > 0 :
                 res[variable] = points
         return res
@@ -325,14 +326,14 @@ class InfluxDataGetter:
         Returns :
             [[(int), (float)]] : an array of pairs (also arrays), the first value being the Unix timestamp in second (x), the seconds being the value (y)
         """
-        res = []
+        raw = []
         query = f"""
             from(bucket: "{self._bucket}")
             |> range(start: {time[0]}, stop: {time[1] + 1})
             |> filter(fn : (r) => r._measurement == "{variable}")
             |> filter(fn : (r) => r._field == "{parameter+"_float"}")
             {"|> aggregateWindow(every: duration(v:"+str(interval)+"), fn: last, createEmpty:false)" if interval else ""}
-            |> keep(columns: ["_time","_value"])
+            |> keep(columns: ["_time","_value","expired"])
             |> yield(name: "res")
             """
         tables = self._db.query(query)
@@ -344,7 +345,15 @@ class InfluxDataGetter:
                     value = PrettyFloat(value)
                 except:
                     value = None
-                res.append([t, value])
+                raw.append([t, value, record["expired"]])
+        sorted_raw = sorted(raw, key=lambda pair: pair[0]) #expired=True and expired=False are in two Influx tables, so they need to be synchronized
+        res = []
+        for pair in sorted_raw:
+            if pair[2] == "True":
+                res.append([pair[0], pair[1]]) # So the user can know precisely when a curve is expired
+                res.append([pair[0], None]) # So chartJS will cut the curve from this point (which is expired)
+            else:
+                res.append([pair[0], pair[1]])
 
         return self._insert_last_known_value(variable, parameter, res, time)
     
@@ -367,7 +376,7 @@ class InfluxDataGetter:
             from(bucket: "{self._bucket}")
             |> range(start: 0, stop: {time[0]+1})
             |> filter(fn : (r) => r._measurement == "{variable}")
-            |> filter(fn : (r) => r._field == "{parameter+"_float"}")
+            |> filter(fn : (r) => r._field == "{parameter+"_float"}" and r.expired == "False")
             |> last()
             |> keep(columns: ["_value"])
             |> yield(name: "res")
@@ -387,6 +396,7 @@ class InfluxDataGetter:
     def _get_last_values(self, variable, parameter, start_time, end_time):
         """
         Gets the lastest values for the given variable and parameter that are in [start_time, end_time].
+        The process is the same as _get_curve.
 
         Parameters :
             variable (str) : the name (Influx) of the variable we want the last value of.
@@ -398,14 +408,14 @@ class InfluxDataGetter:
             [[(int), (float)]] : an array of points (also arrays). The first value is the Unix timestamp in second (x), the seconds is the value (y)
         """
 
-        res = []
+        raw = []
         query = f"""
             from(bucket: "{self._bucket}")
             |> range(start: {start_time if start_time != None else 0}, stop: {end_time+1})
             |> filter(fn : (r) => r._measurement == "{variable}")
             |> filter(fn : (r) => r._field == "{parameter+ "_float"}")
             {"|> last()" if start_time == None else ""}
-            |> keep(columns: ["_time","_value"])
+            |> keep(columns: ["_time","_value", "expired"])
             |> yield(name: "res")
             """
 
@@ -419,7 +429,17 @@ class InfluxDataGetter:
                     value = PrettyFloat(value)
                 except:
                     value = None
-                res.append([t, value])
+                raw.append([t, value, record["expired"]])
+
+        sorted_raw = sorted(raw, key=lambda pair: pair[0])
+        res = []
+        for pair in sorted_raw:
+            if pair[2] == "True":
+                res.append([pair[0], pair[1]])
+                res.append([pair[0], None])
+            else:
+                res.append([pair[0], pair[1]])
+
         return res
 
     def _get_device_name_components(self, time):