Adding optional session parameter to Trace Exporters constructors

[ronnathaniel]

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

Currently, Trace Exporters are forced to instantiate their own Session object, taken from the requests module, on initalization.

This change will allow Users to specify Session objects for the Trace Exporters to use.

These specified Sessions will be passed in as optional paramaters to the Exporter's constructor.

requests is the only dependency, and is optional.

Fixes #2489

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)
• This change requires a documentation update

How Has This Been Tested?

Please describe the tests that you ran to verify your changes. Provide instructions so we can reproduce. Please also list any relevant details for your test configuration

• Test A

Updated all Unit Tests for session-utilizing exporters. These exporters include:

• opentelemetry-exporter-otlp-proto-http
• Span Exporter
• Log Exporter
• opentelemetry-exporter-zipkin-proto-http
• Span Exporter
• opentelemetry-exporter-zipkin-json
• Span Exporter

All Unit Tests have passed, as expected.

• Test B

Running Locally. As an optional parameter, I passed in an already-Instantiated
Session object, taken from the already-leveraged requests module.

Very Simply:

zipkin_exporter = ZipkinExporter(session=requests.Session())

And proceeded to export Spans and Traces to a local backend.

Does This PR Require a Contrib Repo Change?

Answer the following question based on these examples of changes that would require a Contrib Repo Change:

• The OTel specification has changed which prompted this PR to update the method interfaces of opentelemetry-api/ or opentelemetry-sdk/

• The method interfaces of test/util have changed

• Scripts in scripts/ that were copied over to the Contrib repo have changed

• Configuration files that were copied over to the Contrib repo have changed (when consistency between repositories is applicable) such as in

  • pyproject.toml
  • isort.cfg
  • .flake8

• When a new .github/CODEOWNER is added

• Major changes to project information, such as in:

  • README.md
  • CONTRIBUTING.md

• No.

Checklist:

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

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: ronnathaniel / name: Ron Nathaniel (962e9bc, 8024433, 85cd4ec, 5bf5f0e, 08c1fb2)

[srikanthccv]

LGTM

[ronnathaniel]

Unsure why all Jobs are stuck on Expected - Waiting for Status, re-requested approvals

[lzchen]

@ronnathaniel
Looks like the build is failing on actual tests?

[ronnathaniel]

@ronnathaniel Looks like the build is failing on actual tests?

Thanks for noticing. Should be fixed now. Waiting for tests to run to confirm

[lzchen]

@ronnathaniel
There's some lint errors failing the build. Please make sure to run and pass your tests locally by running tox.