**bugfix**: A RUNTIME parent does not display DEBUG child's metric

CHANGELOG.md

 # v2.14.13
+
+* **bugfix**: A RUNTIME parent does not display DEBUG child's metric

docs/instrumentation/metrics.rst

@@ -35,6 +35,9 @@ INHERIT is the default state for all other metrics than root,
 for root the default is RUNTIME. Root metric cannot be set to INHERIT,
 as it would not make sense.
 
+Also, if parent is RUNTIME and child is DEBUG, the metrics reported by the child won't be included
+in parent metric data.
+
 You can switch the metric anytime by assigning a correct value to
 it's ``level`` property, or by specifying it's metric level during a call to ``getMetric()``.
 

satella/__init__.py

-__version__ = '2.14.13_a1'
+__version__ = '2.14.13'

satella/instrumentation/metrics/metric_types/base.py

@@ -117,7 +117,8 @@ class Metric:
     def to_metric_data(self) -> MetricDataCollection:
         output = MetricDataCollection()
         for child in self.children:
-            output += child.to_metric_data()
+            if child.level <= self.level:
+                output += child.to_metric_data()
         output.prefix_with(self.name)
 
         if self.enable_timestamp:
@@ -219,7 +220,8 @@ class EmbeddedSubmetrics(LeafMetric):
         if self.embedded_submetrics_enabled:
             v = MetricDataCollection()
             for child in self.children:
-                v = v + child.to_metric_data()
+                if child.level <= self.level:
+                    v = v + child.to_metric_data()
             return v
         else:
             return super().to_metric_data()
@@ -239,3 +241,7 @@ class EmbeddedSubmetrics(LeafMetric):
 
         return self.__class__(self.name, self, MetricLevel.INHERIT, *self.args, labels=labels,
                               **self.kwargs)
+
+
+from .registry import register_metric
+register_metric(Metric)

tests/test_instrumentation/test_metrics/test_metrics.py

@@ -20,6 +20,15 @@ def choose(postfix: str, mdc: MetricDataCollection, labels=None) -> MetricData:
 
 class TestMetric(unittest.TestCase):
 
+    def test_child_metrics(self):
+        """A RUNTIME parent does not display DEBUG child's metric"""
+        parent = getMetric('test.child.metric', metric_level=MetricLevel.RUNTIME)
+        child = getMetric('test.child.metric.kid', 'int', metric_level=MetricLevel.DEBUG)
+        child.runtime(2)
+        data = parent.to_metric_data()
+        kid = choose('.kid', data)
+        self.assertIsNone(kid)
+
     def test_uptime_metric(self):
         up_metric = getMetric('uptime.metric', 'uptime')
         time.sleep(1)
@@ -250,6 +259,8 @@ class TestMetric(unittest.TestCase):
             counter.to_metric_data()))
 
     def test_base_metric(self):
+        root_metric = getMetric()
+        root_metric.level = MetricLevel.DEBUG
         metric2 = getMetric('root.test.FloatValue', 'float', MetricLevel.DEBUG, enable_timestamp=False)
         metric2.runtime(2.0)
         metric2.debug(1.0)