Add quality api and test

api/__init__.py

@@ -60,6 +60,8 @@ from .s15_energy import get_pump_energy_schema, get_pump_energy, set_pump_energy
 
 from .s16_emitters import get_emitter_schema, get_emitter, set_emitter
 
+from .s17_quality import get_quality_schema, get_quality, set_quality
+
 from .s21_times import TIME_STATISTIC_NONE, TIME_STATISTIC_AVERAGED, TIME_STATISTIC_MINIMUM, TIME_STATISTIC_MAXIMUM, TIME_STATISTIC_RANGE
 from .s21_times import get_time_schema, get_time, set_time
 

api/s17_quality.py

@@ -0,0 +1,59 @@
+from .operation import *
+
+
+def get_quality_schema(name: str) -> dict[str, dict[str, Any]]:
+    return { 'node'    : {'type': 'str'   , 'optional': False , 'readonly': True },
+             'quality' : {'type': 'float' , 'optional': True ,  'readonly': False} }
+
+
+def get_quality(name: str, node: str) -> dict[str, Any]:
+    e = try_read(name, f"select * from quality where node = '{node}'")
+    if e == None:
+        return { 'node': node, 'quality': None }
+    d = {}
+    d['node'] = str(e['node'])
+    d['quality'] = float(e['quality']) if e['quality'] != None else None
+    return d
+
+
+class Quality(object):
+    def __init__(self, input: dict[str, Any]) -> None:
+        self.type = 'quality'
+        self.node = str(input['node'])
+        self.quality = float(input['quality']) if 'quality' in input and input['quality'] != None else None
+
+        self.f_type = f"'{self.type}'"
+        self.f_node = f"'{self.node}'"
+        self.f_quality = self.quality if self.quality != None else 'null'
+
+    def as_dict(self) -> dict[str, Any]:
+        return { 'type': self.type, 'node': self.node, 'quality': self.quality }
+
+
+def set_quality_cache(name: str, cs: ChangeSet) -> SqlChangeSet:
+    old = Quality(get_quality(name, cs.operations[0]['node']))
+    raw_new = get_quality(name, cs.operations[0]['node'])
+
+    new_dict = cs.operations[0]
+    schema = get_quality_schema(name)
+    for key, value in schema.items():
+        if key in new_dict and not value['readonly']:
+            raw_new[key] = new_dict[key]
+    new = Quality(raw_new)
+
+    redo_sql = f"delete from quality where node = {new.f_node};"
+    if new.quality != None:
+        redo_sql += f"\ninsert into quality (node, quality) values ({new.f_node}, {new.f_quality});"
+
+    undo_sql = f"delete from quality where node = {old.f_node};"
+    if old.quality != None:
+        undo_sql += f"\ninsert into quality (node, quality) values ({old.f_node}, {old.f_quality});"
+
+    redo_cs = g_update_prefix | new.as_dict()
+    undo_cs = g_update_prefix | old.as_dict()
+
+    return SqlChangeSet(redo_sql, undo_sql, redo_cs, undo_cs)
+
+
+def set_quality(name: str, cs: ChangeSet) -> ChangeSet:
+    return execute_command(name, set_quality_cache(name, cs))