Metrics export pipeline + metrics stdout exporter

docs/opentelemetry.sdk.metrics.export.aggregate.rst

@@ -0,0 +1,7 @@
+opentelemetry.sdk.metrics.export.aggregate
+==========================================
+
+.. automodule:: opentelemetry.sdk.metrics.export.aggregate
+    :members:
+    :undoc-members:
+    :show-inheritance:

docs/opentelemetry.sdk.metrics.export.batcher.rst

@@ -0,0 +1,11 @@
+opentelemetry.sdk.metrics.export.batcher
+==========================================
+
+.. toctree::
+
+   opentelemetry.sdk.metrics.export
+
+.. automodule:: opentelemetry.sdk.metrics.export.batcher
+    :members:
+    :undoc-members:
+    :show-inheritance:

docs/opentelemetry.sdk.metrics.export.rst

@@ -0,0 +1,7 @@
+opentelemetry.sdk.metrics.export
+==========================================
+
+.. automodule:: opentelemetry.sdk.metrics.export
+    :members:
+    :undoc-members:
+    :show-inheritance:

docs/opentelemetry.sdk.metrics.rst

@@ -1,6 +1,14 @@
 opentelemetry.sdk.metrics package
 ==========================================
 
+Submodules
+----------
+
+.. toctree::
+
+   opentelemetry.sdk.metrics.export.aggregate
+   opentelemetry.sdk.metrics.export.batcher
+
 .. automodule:: opentelemetry.sdk.metrics
     :members:
     :undoc-members:

examples/opentelemetry-example-app/src/opentelemetry_example_app/metrics_example.py

@@ -18,8 +18,12 @@
 
 from opentelemetry import metrics
 from opentelemetry.sdk.metrics import Counter, Meter
+from opentelemetry.sdk.metrics.export import ConsoleMetricsExporter
+from opentelemetry.sdk.metrics.export.batcher import UngroupedBatcher
+from opentelemetry.sdk.metrics.export.controller import PushController
 
-metrics.set_preferred_meter_implementation(lambda _: Meter())
+batcher = UngroupedBatcher(True)
+metrics.set_preferred_meter_implementation(lambda _: Meter(batcher))
 meter = metrics.meter()
 counter = meter.create_metric(
     "available memory",
@@ -41,6 +45,6 @@
 
 # Record batch usage
 meter.record_batch(label_set, [(counter, 50)])
-print(counter_handle.data)
 
-# TODO: exporters
+exporter = ConsoleMetricsExporter()
+controller = PushController(meter, exporter, 5)

opentelemetry-api/src/opentelemetry/metrics/__init__.py

@@ -220,7 +220,7 @@ def create_metric(
         metric_type: Type[MetricT],
         label_keys: Sequence[str] = (),
         enabled: bool = True,
-        monotonic: bool = False,
+        alternate: bool = False,
     ) -> "Metric":
         """Creates a ``metric_kind`` metric with type ``value_type``.
 
@@ -232,7 +232,7 @@ def create_metric(
             metric_type: The type of metric being created.
             label_keys: The keys for the labels with dynamic values.
             enabled: Whether to report the metric by default.
-            monotonic: Whether to only allow non-negative values.
+            alternate: Whether to only allow non-negative values.
 
         Returns: A new ``metric_type`` metric with values of ``value_type``.
         """