openapi: add more source api

[Ehco1996]

What problem does this PR solve?

part of subtask in #1982

What is changed and how it works?

as title, add more api about source

Check List

Tests

• Unit test
• Integration test

Code changes

• Has exported function/method change
• Has exported variable/fields change

Side effects

• Increased code complexity

Related changes

• Need to cherry-pick to the release branch

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• okJiang

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