feat: add opentelemetry-exporter-http-transport package

[herin049]

Description

Adds a common opentelemetry-exporter-http-transport package that will be utilized by multiple HTTP exporter packages (initially OTLP JSON) to abstract away and generalize underlying HTTP transport implementations and exporting with OTLP. Introducing this package will significantly reduce the amount of code duplication present in HTTP exporters and will allow for the usage of alternative HTTP client libraries.

Fixes #3439, #4171, #1003, #2990

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-http-transport

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

[codeboten]

This is really exciting. Thanks @herin049, just one question regarding the naming

[emdneto]

Thanks for the PR!

Just a heads-up: we no longer update CHANGELOG.md directly. The changelog is now generated from changelog fragments using Towncrier.

Please add the appropriate changelog fragment for this change instead of editing CHANGELOG.md manually. You can find the instructions and expected format in CONTRIBUTING.md.

[codeboten]

Is there already a branch somewhere showing how this package can be used inside some of the other http exporters?

[herin049]

Is there already a branch somewhere showing how this package can be used inside some of the other http exporters?

@codeboten I've opened #5219 which includes the full changes updating the OTLP Proto HTTP exporter to use this new package. I've also switched to start using urllib3 as the default transport backend, as long as the user doesn't specify otherwise. All of the changes in #5219 are designed to be fully backwards compatible.

[MikeGoldsmith]

I'm in favour of this change, it makes a lot of sense to have a shared package.

I've left some comments here, and will add to the on-going conversation around naming.

[Copilot]

Pull request overview

Adds a new opentelemetry-exporter-http-transport package intended to provide shared HTTP transport abstractions for exporter implementations, including optional requests and urllib3 backends.

Changes:

• Introduces base HTTP result/transport interfaces and concrete requests/urllib3 transport implementations.
• Adds package metadata, README, changelog, lockfile/workspace wiring, tox environments, and CI jobs.
• Adds unit tests and test requirements for both HTTP backend implementations.

Reviewed changes

Copilot reviewed 21 out of 22 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
.changelog/5194.added	Adds changelog fragment for the new package.
.github/workflows/lint.yml	Adds lint CI job for the new package.
.github/workflows/test.yml	Adds test CI jobs for the new package across Python/platform/version matrices.
dev-requirements.txt	Adds mocket for test/lint dependency resolution.
eachdist.ini	Registers the new package in prerelease distribution tooling.
exporter/opentelemetry-exporter-http-transport/LICENSE	Adds package license file.
exporter/opentelemetry-exporter-http-transport/README.rst	Documents installation and purpose of the new package.
exporter/opentelemetry-exporter-http-transport/pyproject.toml	Defines package metadata, extras, and build configuration.
exporter/opentelemetry-exporter-http-transport/src/opentelemetry/exporter/http/transport/__init__.py	Adds package namespace module.
exporter/opentelemetry-exporter-http-transport/src/opentelemetry/exporter/http/transport/_base.py	Adds abstract HTTP transport/result interfaces.
exporter/opentelemetry-exporter-http-transport/src/opentelemetry/exporter/http/transport/_requests.py	Adds requests-based HTTP transport/result implementation.
exporter/opentelemetry-exporter-http-transport/src/opentelemetry/exporter/http/transport/_urllib3.py	Adds urllib3-based HTTP transport/result implementation.
exporter/opentelemetry-exporter-http-transport/src/opentelemetry/exporter/http/transport/version/__init__.py	Adds package version module.
exporter/opentelemetry-exporter-http-transport/test-requirements.in	Defines test dependency inputs.
exporter/opentelemetry-exporter-http-transport/test-requirements.latest.txt	Adds compiled latest test dependencies.
exporter/opentelemetry-exporter-http-transport/test-requirements.oldest.txt	Adds compiled oldest test dependencies.
exporter/opentelemetry-exporter-http-transport/tests/__init__.py	Adds test package marker.
exporter/opentelemetry-exporter-http-transport/tests/test_requests_transport.py	Adds tests for the requests transport.
exporter/opentelemetry-exporter-http-transport/tests/test_urllib3_transport.py	Adds tests for the urllib3 transport.
pyproject.toml	Adds workspace and pyright wiring for the new package.
tox.ini	Adds tox test/lint environments and pyright dependency wiring.
uv.lock	Adds lockfile entries for the new workspace package and extras.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[MikeGoldsmith]

Thanks @herin049!

[codeboten]

🎉

[herin049]

@lzchen All conversations should be resolved.