From 110bb7349599efadf2bc039504a8c7bd38a3ccb8 Mon Sep 17 00:00:00 2001
From: Bogdan Drutu <bogdandrutu@gmail.com>
Date: Tue, 20 Aug 2024 15:01:37 -0700
Subject: [PATCH] Add ExponentialHistograms to data types supported (#4134)

---
 CHANGELOG.md                                                | 2 ++
 .../src/opentelemetry/sdk/metrics/_internal/point.py        | 6 ++++--
 .../src/opentelemetry/sdk/metrics/export/__init__.py        | 3 +++
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a97c38d812..4edac96900 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   ([#4103](https://github.com/open-telemetry/opentelemetry-python/pull/4103))
 - Update semantic conventions to version 1.27.0
   ([#4104](https://github.com/open-telemetry/opentelemetry-python/pull/4104))
+- Export ExponentialHistogram and ExponentialHistogramDataPoint
+  ([#4134](https://github.com/open-telemetry/opentelemetry-python/pull/4134))
 - Implement Client Key and Certificate File Support for All OTLP Exporters
   ([#4116](https://github.com/open-telemetry/opentelemetry-python/pull/4116))
 
diff --git a/opentelemetry-sdk/src/opentelemetry/sdk/metrics/_internal/point.py b/opentelemetry-sdk/src/opentelemetry/sdk/metrics/_internal/point.py
index 42420b9008..473b45ed6b 100644
--- a/opentelemetry-sdk/src/opentelemetry/sdk/metrics/_internal/point.py
+++ b/opentelemetry-sdk/src/opentelemetry/sdk/metrics/_internal/point.py
@@ -183,8 +183,10 @@ def to_json(self, indent=4) -> str:
 
 
 # pylint: disable=invalid-name
-DataT = Union[Sum, Gauge, Histogram]
-DataPointT = Union[NumberDataPoint, HistogramDataPoint]
+DataT = Union[Sum, Gauge, Histogram, ExponentialHistogram]
+DataPointT = Union[
+    NumberDataPoint, HistogramDataPoint, ExponentialHistogramDataPoint
+]
 
 
 @dataclass(frozen=True)
diff --git a/opentelemetry-sdk/src/opentelemetry/sdk/metrics/export/__init__.py b/opentelemetry-sdk/src/opentelemetry/sdk/metrics/export/__init__.py
index 97c31b97ec..478237cd17 100644
--- a/opentelemetry-sdk/src/opentelemetry/sdk/metrics/export/__init__.py
+++ b/opentelemetry-sdk/src/opentelemetry/sdk/metrics/export/__init__.py
@@ -43,6 +43,7 @@
 
 __all__ = [
     "AggregationTemporality",
+    "Buckets",
     "ConsoleMetricExporter",
     "InMemoryMetricReader",
     "MetricExporter",
@@ -51,6 +52,8 @@
     "PeriodicExportingMetricReader",
     "DataPointT",
     "DataT",
+    "ExponentialHistogram",
+    "ExponentialHistogramDataPoint",
     "Gauge",
     "Histogram",
     "HistogramDataPoint",