Remote TGI/TGI services with OAuth Client Credentials authentication

[sgurunat]

Description

To support remote TGI/TEI endpoints instead of running it locally along with if these endpoints are protected with OAuth Client Credentials flow.

Issues

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)
• 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.)

Added get_access_token method in utils.py to get the OAuth Client Credentials flow by taking parameters clientid, clientsecret and tokenurl from environment variables. Using utils.py so that the fucntion can be reused in multiple places.

Added authentication i.e Authorization header to pass the token in multiple components like embedding, llm-faqgen, llm-sumarization, llm-text-generation and reranking files. These components uses the common get_access_token method from utils.

Dependencies

List the newly introduced 3rd party dependency if exists.

Tests

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[codecov]

Codecov Report

Attention: Patch coverage is 25.00000% with 9 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
comps/cores/mega/utils.py	25.00%	9 Missing ⚠️

Files with missing lines	Coverage Δ
comps/cores/mega/utils.py	24.42% <25.00%> (+0.05%)	⬆️

... and 3 files with indirect coverage changes