Merge branch 'main' into main

CONTRIBUTING.md

@@ -45,15 +45,7 @@ during their normal contribution hours.
 
 ## Development
 
-To quickly get up and running, you can use the `scripts/eachdist.py` tool that
-ships with this project. First create a virtualenv and activate it.
-Then run `python scripts/eachdist.py develop` to install all required packages
-as well as the project's packages themselves (in `--editable` mode).
-
-You can then run `scripts/eachdist.py test` to test everything or
-`scripts/eachdist.py lint` to lint everything (fixing anything that is auto-fixable).
-
-Additionally, this project uses [tox](https://tox.readthedocs.io) to automate
+This project uses [tox](https://tox.readthedocs.io) to automate
 some aspects of development, including testing against multiple Python versions.
 To install `tox`, run:
 
@@ -104,8 +96,6 @@ The continuation integration overrides that environment variable with as per the
 
 ### Benchmarks
 
-Performance progression of benchmarks for packages distributed by OpenTelemetry Python can be viewed as a [graph of throughput vs commit history](https://opentelemetry-python.readthedocs.io/en/latest/performance/benchmarks.html). From the linked page, you can download a JSON file with the performance results.
-
 Running the `tox` tests also runs the performance tests if any are available. Benchmarking tests are done with `pytest-benchmark` and they output a table with results to the console.
 
 To write benchmarks, simply use the [pytest benchmark fixture](https://pytest-benchmark.readthedocs.io/en/latest/usage.html#usage) like the following:

docs/examples/views/README.rst

@@ -0,0 +1,35 @@
+View common scenarios
+=====================
+
+These examples show how to customize the metrics that are output by the SDK using Views. There are multiple examples:
+
+* change_aggregation: Shows how to configure to change the default aggregation for an instrument.
+* change_name: Shows how to change the name of a metric.
+* limit_num_of_attrs: Shows how to limit the number of attributes that are output for a metric.
+
+The source files of these examples are available :scm_web:`here <docs/examples/views/>`.
+
+
+Installation
+------------
+
+.. code-block:: sh
+
+    pip install -r requirements.txt
+
+Run the Example
+---------------
+
+.. code-block:: sh
+
+    python <example_name>.py
+
+The output will be shown in the console.
+
+Useful links
+------------
+
+- OpenTelemetry_
+- :doc:`../../api/metrics`
+
+.. _OpenTelemetry: https://github.com/open-telemetry/opentelemetry-python/

docs/examples/views/change_aggregation.py

@@ -0,0 +1,53 @@
+# Copyright The OpenTelemetry Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import random
+import time
+
+from opentelemetry.metrics import get_meter_provider, set_meter_provider
+from opentelemetry.sdk.metrics import MeterProvider
+from opentelemetry.sdk.metrics.export import (
+    ConsoleMetricExporter,
+    PeriodicExportingMetricReader,
+)
+from opentelemetry.sdk.metrics.view import SumAggregation, View
+
+# Create a view matching the histogram instrument name `http.client.request.latency`
+# and configure the `SumAggregation` for the result metrics stream
+hist_to_sum_view = View(
+    instrument_name="http.client.request.latency", aggregation=SumAggregation()
+)
+
+# Use console exporter for the example
+exporter = ConsoleMetricExporter()
+
+# Create a metric reader with stdout exporter
+reader = PeriodicExportingMetricReader(exporter, export_interval_millis=1_000)
+provider = MeterProvider(
+    metric_readers=[
+        reader,
+    ],
+    views=[
+        hist_to_sum_view,
+    ],
+)
+set_meter_provider(provider)
+
+meter = get_meter_provider().get_meter("view-change-aggregation", "0.1.2")
+
+histogram = meter.create_histogram("http.client.request.latency")
+
+while 1:
+    histogram.record(99.9)
+    time.sleep(random.random())

docs/examples/views/change_name.py

@@ -0,0 +1,55 @@
+# Copyright The OpenTelemetry Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import random
+import time
+
+from opentelemetry.metrics import get_meter_provider, set_meter_provider
+from opentelemetry.sdk.metrics import Counter, MeterProvider
+from opentelemetry.sdk.metrics.export import (
+    ConsoleMetricExporter,
+    PeriodicExportingMetricReader,
+)
+from opentelemetry.sdk.metrics.view import View
+
+# Create a view matching the counter instrument `my.counter`
+# and configure the new name `my.counter.total` for the result metrics stream
+change_metric_name_view = View(
+    instrument_type=Counter,
+    instrument_name="my.counter",
+    name="my.counter.total",
+)
+
+# Use console exporter for the example
+exporter = ConsoleMetricExporter()
+
+# Create a metric reader with stdout exporter
+reader = PeriodicExportingMetricReader(exporter, export_interval_millis=1_000)
+provider = MeterProvider(
+    metric_readers=[
+        reader,
+    ],
+    views=[
+        change_metric_name_view,
+    ],
+)
+set_meter_provider(provider)
+
+meter = get_meter_provider().get_meter("view-name-change", "0.1.2")
+
+my_counter = meter.create_counter("my.counter")
+
+while 1:
+    my_counter.add(random.randint(1, 10))
+    time.sleep(random.random())

docs/examples/views/limit_num_of_attrs.py

@@ -0,0 +1,71 @@
+# Copyright The OpenTelemetry Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import random
+import time
+from typing import Iterable
+
+from opentelemetry.metrics import (
+    CallbackOptions,
+    Observation,
+    get_meter_provider,
+    set_meter_provider,
+)
+from opentelemetry.sdk.metrics import MeterProvider, ObservableGauge
+from opentelemetry.sdk.metrics.export import (
+    ConsoleMetricExporter,
+    PeriodicExportingMetricReader,
+)
+from opentelemetry.sdk.metrics.view import View
+
+# Create a view matching the observable gauge instrument `observable_gauge`
+# and configure the attributes in the result metric stream
+# to contain only the attributes with keys with `k_3` and `k_5`
+view_with_attributes_limit = View(
+    instrument_type=ObservableGauge,
+    instrument_name="observable_gauge",
+    attribute_keys={"k_3", "k_5"},
+)
+
+exporter = ConsoleMetricExporter()
+
+reader = PeriodicExportingMetricReader(exporter, export_interval_millis=1_000)
+provider = MeterProvider(
+    metric_readers=[
+        reader,
+    ],
+    views=[
+        view_with_attributes_limit,
+    ],
+)
+set_meter_provider(provider)
+
+meter = get_meter_provider().get_meter("reduce-cardinality-with-view", "0.1.2")
+
+
+def observable_gauge_func(options: CallbackOptions) -> Iterable[Observation]:
+    attrs = {}
+    for i in range(random.randint(1, 100)):
+        attrs[f"k_{i}"] = f"v_{i}"
+    yield Observation(1, attrs)
+
+
+# Async gauge
+observable_gauge = meter.create_observable_gauge(
+    "observable_gauge",
+    [observable_gauge_func],
+)
+
+while 1:
+    time.sleep(1)

docs/examples/views/requirements.txt

@@ -0,0 +1,6 @@
+Deprecated==1.2.13
+opentelemetry-api==1.12.0rc2
+opentelemetry-sdk==1.12.0rc2
+opentelemetry-semantic-conventions==0.32b0
+typing_extensions==4.3.0
+wrapt==1.14.1

opentelemetry-sdk/src/opentelemetry/sdk/resources/__init__.py

@@ -71,8 +71,9 @@
     OTEL_SERVICE_NAME,
 )
 from opentelemetry.semconv.resource import ResourceAttributes
+from opentelemetry.util.types import AttributeValue
 
-LabelValue = typing.Union[str, bool, int, float]
+LabelValue = AttributeValue
 Attributes = typing.Dict[str, LabelValue]
 logger = logging.getLogger(__name__)