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feat(NODE-3689): require hello command for connection handshake to use OP_MSG disallowing OP_QUERY #3938

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merged 17 commits into from
Dec 6, 2023

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alenakhineika
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@alenakhineika alenakhineika commented Nov 30, 2023

Description

Always perform the initial handshake as hello + OP_MSG in the load-balanced mode or when serverApi is specified.

What is changing?

  • The driver already sends the hello command in the load-balanced mode and when the server API is specified (see NODE-3881)
  • Previously we were checking only for the load-balanced topology to send the initial handshake as OP_MSG, now we also check for serverApi.version (see spec)
  • This PR adds integration tests for both the load-balanced mode and server API to verify that:
    • In the load-balanced mode, the initial handshake is always sent as OP_MSG
    • When the server API is specified, the initial handshake is always sent as OP_MSG
    • When neither load-balanced nor server API, the initial handshake is always sent as OP_QUERY, but eventually switched to OP_MSG
  • Change some clients to mocked servers configured with an API version to not set a serverApi, because mocked servers do not support OP_MSG and fail when run on latest_server_v1_api. There is the existing ticket to remove usage of mongodb mock server (NODE-3807).
Is there new documentation needed for these changes?

No

What is the motivation for this change?

NODE-3689

Double check the following

  • Ran npm run check:lint script
  • Self-review completed using the steps outlined here
  • PR title follows the correct format: type(NODE-xxxx)[!]: description
    • Example: feat(NODE-1234)!: rewriting everything in coffeescript
  • Changes are covered by tests
  • New TODOs have a related JIRA ticket

@alenakhineika alenakhineika marked this pull request as ready for review December 1, 2023 20:55
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@durran durran self-assigned this Dec 4, 2023
@durran durran added the Primary Review In Review with primary reviewer, not yet ready for team's eyes label Dec 4, 2023
@durran durran added Team Review Needs review from team and removed Primary Review In Review with primary reviewer, not yet ready for team's eyes labels Dec 5, 2023
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4 participants