Added role checks in data source

[jaswanth8888]

Description

• Added role checks in data source
• Users with admin role can upload, delete documents
• user with user role can only view the existing file

Issues

List the issue or RFC link this PR is working on. If there is no such link, please mark it as n/a.

Type of change

List the type of change like below. Please delete options that are not relevant.

• [ ] Bug fix (non-breaking change which fixes an issue)
• [X] New feature (non-breaking change which adds new functionality)
• [ ] Breaking change (fix or feature that would break existing design and interface)
• [ ] Others (enhancement, documentation, validation, etc.)

Dependencies

List the newly introduced 3rd party dependency if exists.

Tests

Describe the tests that you ran to verify your changes.

[chensuyue]

Please check the CI issue, can you pass the test locally?

[xiguiw]

@jaswanth8888

This feature is useful. Are you still working on this?

[github-actions[bot]]

Dependency Review

✅ No vulnerabilities or license issues found.

Scanned Files

[chensuyue]

Known issue: https://github.com/opea-project/GenAIExamples/issues/1270

[xiguiw]

Known issue: #1270 1270: Let's wait for langserve 0.3.1 pypi release. https://pypi.org/project/langserve/#history

Now 1270 is released. Rerun CI to check now.