move realtime result registration into dbh, simplify syntax

artiq/frontend/artiq_run.py

@@ -98,7 +98,7 @@ def main():
     ddb = FlatFileDB(args.ddb)
     pdb = FlatFileDB(args.pdb)
     pdb.hooks.append(SimpleParamLogger())
-    rdb = ResultDB(set())
+    rdb = ResultDB(lambda description: None, lambda mod: None)
     dbh = DBHub(ddb, pdb, rdb)
     try:
         if args.elf:

artiq/language/db.py

@@ -1,6 +1,5 @@
 """
 Connection to device, parameter and result database.
-
 """
 
 class _AttributeKind:
@@ -8,16 +7,13 @@ class _AttributeKind:
 
 
 class Device(_AttributeKind):
-    """Represents a device for ``AutoDB`` to process.
-
-    """
+    """Represents a device for ``AutoDB`` to process."""
     pass
 
 
 class NoDefault:
     """Represents the absence of a default value for ``Parameter``
     and ``Argument``.
-
     """
     pass
 
@@ -28,7 +24,6 @@ class Parameter(_AttributeKind):
 
     :param default: Default value of the parameter to be used if not found
         in the database.
-
     """
     def __init__(self, default=NoDefault):
         self.default = default
@@ -40,16 +35,13 @@ class Argument(_AttributeKind):
 
     :param default: Default value of the argument to be used if not specified
         at instance creation.
-
     """
     def __init__(self, default=NoDefault):
         self.default = default
 
 
 class Result(_AttributeKind):
-    """Represents a result for ``AutoDB`` to process.
-
-    """
+    """Represents a result for ``AutoDB`` to process."""
     pass
 
 
@@ -63,14 +55,11 @@ class AutoDB:
     :param dbh: database hub to use. If ``None``, all devices and parameters
         must be supplied as keyword arguments, and reporting results and
         modifying parameters is not supported.
-
     """
     class DBKeys:
         pass
 
-    @staticmethod
-    def realtime_results():
-        return dict()
+    realtime_results = dict()
 
     def __init__(self, dbh=None, **kwargs):
         self.dbh = dbh
@@ -92,8 +81,9 @@ class AutoDB:
                     except KeyError:
                         raise KeyError("Device '{}' not found".format(k))
                     object.__setattr__(self, k, dev)
-
         self.build()
+        if self.dbh is not None:
+            self.dbh.init_results(self.realtime_results)
 
     def __getattr__(self, name):
         ak = getattr(self.DBKeys, name)
@@ -130,16 +120,11 @@ class AutoDB:
             else:
                 raise ValueError
 
-    @classmethod
-    def get_realtime_results():
-        return dict()
-
     def build(self):
         """This is called by ``__init__`` after the parameter initialization
         is done.
 
         The user may overload this method to complete the object's
         initialization with all parameters available.
-
         """
         pass

artiq/master/worker_db.py

@@ -7,10 +7,29 @@ from artiq.master.results import result_dict_to_hdf5
 
 
 class ResultDB:
-    def __init__(self, realtime_results):
-        self.realtime_data = Notifier({x: [] for x in realtime_results})
+    def __init__(self, init_rt_results, update_rt_results):
+        self.init_rt_results = init_rt_results
+        self.update_rt_results = update_rt_results
+
+    def init(self, rtr_description):
+        assert not hasattr(self, "realtime_data")
+        assert not hasattr(self, "data")
+
+        realtime_results_set = set()
+        for rtr in rtr_description.keys():
+            if isinstance(rtr, tuple):
+                for e in rtr:
+                    realtime_results_set.add(e)
+            else:
+                realtime_results_set.add(rtr)
+
+        self.realtime_data = Notifier({x: [] for x in realtime_results_set})
         self.data = Notifier(dict())
 
+        self.init_rt_results(rtr_description)
+        self.realtime_data.publish = lambda notifier, data: \
+            self.update_rt_results(data)
+
     def _request(self, name):
         try:
             return self.realtime_data[name]
@@ -64,6 +83,7 @@ class DBHub:
 
         self.get_parameter = pdb.request
         self.set_parameter = pdb.set
+        self.init_results = rdb.init
         self.get_result = rdb.request
         self.set_result = rdb.set
 

artiq/master/worker_impl.py

@@ -52,10 +52,6 @@ init_rt_results = make_parent_action("init_rt_results", "description")
 update_rt_results = make_parent_action("update_rt_results", "mod")
 
 
-def publish_rt_results(notifier, data):
-    update_rt_results(data)
-
-
 class Scheduler:
     run_queued = make_parent_action("scheduler_run_queued", "run_params")
     cancel_queued = make_parent_action("scheduler_cancel_queued", "rid")
@@ -81,19 +77,7 @@ def run(rid, run_params):
     start_time = time.localtime()
     exp = get_exp(run_params["file"], run_params["experiment"])
 
-    realtime_results = exp.realtime_results()
-    init_rt_results(realtime_results)
-
-    realtime_results_set = set()
-    for rr in realtime_results.keys():
-        if isinstance(rr, tuple):
-            for e in rr:
-                realtime_results_set.add(e)
-        else:
-            realtime_results_set.add(rr)
-    rdb = ResultDB(realtime_results_set)
-    rdb.realtime_data.publish = publish_rt_results
-
+    rdb = ResultDB(init_rt_results, update_rt_results)
     dbh = DBHub(ParentDDB, ParentPDB, rdb)
     try:
         try:

examples/master/repository/flopping_f_simulation.py

@@ -40,9 +40,7 @@ class FloppingF(Experiment, AutoDB):
 
         flopping_freq = Parameter()
 
-    @staticmethod
-    def realtime_results():
-        return {
+    realtime_results = {
         ("frequency", "brightness"): "xy"
     }