Use Case

As a Node.js engineer
I want to remove the recalculation of namespaces
So that the driver doesn't perform unnecessary work

User Experience

• What is the desired/expected outcome for the user once this ticket is implemented?
  • No API change. Performance improves
• If bug: What is the number of impacted customers? How severe is the impact? Is anyone blocked or broken?
  • N/A

Dependencies

• MongoDBNamespace

Risks/Unknowns

• What could go wrong while implementing this change? (e.g., performance, inadvertent behavioral changes in adjacent functionality, existing tech debt, etc)
  • Not much, test coverage should be complete on this subject
• Is there an opportunity for better cross-driver alignment or testing in this area?
  • No
• Is there an opportunity to improve existing documentation on this subject?
  • No

Acceptance Criteria

Implementation Requirements

• Reduce reconstruction of MongoDBNamespace instances (remove "ns" util helper)
  • We should not split a string on dot more than once, and we should not allocate an object to multiple times to re-do that step.
  • The hello and auth commands can be hard coded to use dbName: admin, rather than parse "admin.$cmd" and construct a MongoDBNamespace.
  • Consider attaching dbName as a required parameter to the options after the operations.execute layer, commands do not need a collection name after that point (because it is in the command itself find: "collName")

Testing Requirements

• Check performance improvements.
• All tests pass.

Documentation Requirements

• None

Follow Up Requirements

• N/A