impl(v3): bigtable snippet clang-tidy

[scotthart]

This change is 

[gemini-code-assist]

Summary of Changes

Hello @scotthart, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request enhances the Bigtable example snippets by adopting C++ best practices for function parameter passing. The change specifically modifies BigtableTableAdminClient parameters to use constant references, which improves code efficiency by eliminating unnecessary object copies and clearly signals that the client object remains unmodified within the scope of the function or lambda.

Highlights

• Parameter Type Update: The BigtableTableAdminClient parameters in the WaitForConsistencyCheck function and an associated lambda have been updated to be passed by const& (constant reference) instead of by value.

Changelog

• google/cloud/bigtable/examples/table_admin_snippets.cc
  • Updated BigtableTableAdminClient parameters in WaitForConsistencyCheck and a lambda to const&.

Activity

• No activity has been recorded for this pull request yet.

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[gemini-code-assist]

Code Review

This pull request applies clang-tidy fixes to pass a BigtableTableAdminClient by const& instead of by value. While this avoids a copy, I've pointed out a more significant performance issue where the passed-in client is ignored and a new one is created, leading to unnecessary new connections. I've suggested a refactoring to use the passed-in client, which would be more efficient.

[gemini-code-assist]

The passed-in client is ignored here, and a new one is created on line 636. This is inefficient as it requires establishing a new connection. It would be better to use the passed-in client.

To fix this, WaitForConsistencyCheck should take its admin parameter by value (reverting the change on line 625). Then, this lambda could also take admin by value, and use it instead of creating a new client. This would make the code more efficient and consistent with other snippets in this file.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.80%. Comparing base (56d7714) to head (2adc396).
⚠️ Report is 2 commits behind head on prepare-for-v3.0.0.

Additional details and impacted files

@@                 Coverage Diff                 @@
##           prepare-for-v3.0.0   #15940   +/-   ##
===================================================
  Coverage               92.79%   92.80%           
===================================================
  Files                    2332     2332           
  Lines                  214327   214327           
===================================================
+ Hits                   198895   198909   +14     
+ Misses                  15432    15418   -14     

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[diegomarquezp]

@diegomarquezp reviewed all commit messages.
Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion (waiting on @diegomarquezp and @scotthart).