opentelemetry-exporter-otlp-proto-grpc: fix incorrect default port for gRPC internal metrics

[herin049]

Description

Fix incorrect default port for OTLP gRPC exporter self-metrics

Internal SDK self-metrics recorded the wrong server.port for
OTLP/gRPC exporters and dropped server.address/server.port entirely for
scheme-less host:port endpoints (e.g. otlp.example.com:4317).

These changes also move the location of the exporter metrics utilities from the opentelemetry-exporter-otlp-proto-common package to the opentelemetry-exporter-otlp-common package for future work for adding exporter self-metrics to the OTLP JSON exporter.

Fixes #5651

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

uv run tox -e py314-test-opentelemetry-exporter-otlp-proto-grpc-latest

Does This PR Require a Contrib Repo Change?

• Yes. - Link to PR:
• No.

Checklist:

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been added
• Documentation has been updated

[Copilot]

🟢 Approval recommended

The focused implementation correctly covers scheme-less endpoints and transport-specific default ports with corresponding tests.

Pull request overview

Fixes OTLP exporter self-metrics endpoint attributes and relocates shared metrics utilities for reuse.

Changes:

• Corrects gRPC address parsing and default port reporting.
• Moves exporter metrics utilities into the transport-neutral OTLP common package.
• Updates dependencies, tests, and changelog.

File summaries

File	Description
uv.lock	Adds the OTLP common dependency.
exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/trace_exporter/__init__.py	Uses relocated metrics utilities.
exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/metric_exporter/__init__.py	Uses relocated metrics utilities.
exporter/opentelemetry-exporter-otlp-proto-http/src/opentelemetry/exporter/otlp/proto/http/_log_exporter/__init__.py	Uses relocated metrics utilities.
exporter/opentelemetry-exporter-otlp-proto-grpc/test-requirements.oldest.txt	Updates generated test dependencies.
exporter/opentelemetry-exporter-otlp-proto-grpc/test-requirements.latest.txt	Updates generated test dependencies.
exporter/opentelemetry-exporter-otlp-proto-grpc/test-requirements.in	Adds OTLP common test dependency.
exporter/opentelemetry-exporter-otlp-proto-grpc/src/opentelemetry/exporter/otlp/proto/grpc/exporter.py	Passes the effective gRPC endpoint to metrics.
exporter/opentelemetry-exporter-otlp-proto-grpc/pyproject.toml	Adds the runtime OTLP common dependency.
exporter/opentelemetry-exporter-otlp-proto-common/tests/test_exporter_metrics.py	Removes tests from the former location.
exporter/opentelemetry-exporter-otlp-common/tests/test_exporter_metrics.py	Adds relocated and expanded endpoint tests.
exporter/opentelemetry-exporter-otlp-common/src/opentelemetry/exporter/otlp/common/_exporter_metrics.py	Implements endpoint parsing and transport-specific ports.
docs/getting_started/tests/requirements.txt	Includes the new direct dependency.
.changelog/5668.fixed	Records the gRPC self-metrics fix.

Review details

• Files reviewed: 13/14 changed files
• Comments generated: 0
• Review effort level: Balanced

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Merged · refreshed 2026-09-22 07:23 UTC

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