chore(bigtable): debug test timeouts

[shollyman]

DO NOT SUBMIT this is just trying to evaluate timings

[gemini-code-assist]

Summary of Changes

Hello @shollyman, 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 is a diagnostic change aimed at understanding and debugging test timeouts within the Bigtable integration environment setup. It introduces precise timing measurements around the initialization of both production and emulated Bigtable environments, logging these durations to identify potential bottlenecks. This change is explicitly marked as a temporary measure for evaluation and is not intended for submission.

Highlights

• Debugging Test Timeouts: This pull request introduces logging to measure the duration of Bigtable integration environment creation, specifically for NewProdEnv and NewEmulatedEnv calls, to help diagnose test timeouts.
• Logging Dependency: The github.com/apache/beam/sdks/v2/go/pkg/beam/log package has been imported to facilitate the new timing log statements.

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[gemini-code-assist]

Code Review

This pull request adds timing logs to debug test timeouts. While this is intended for debugging, there's an opportunity to refactor the new logic to avoid code duplication, making it cleaner and more maintainable, even for temporary code.

[gemini-code-assist]

To avoid repeating the logging and return logic, you could refactor this block. By using an if/else structure to determine which environment to create and then logging and returning once at the end, the code becomes more concise and easier to maintain.

	var env IntegrationEnv
	var err error
	var name string
	if integrationConfig.UseProd {
		if c.Table == "" {
			c.Table = fmt.Sprintf("it-table-%d", time.Now().Unix())
		}
		env, err = NewProdEnv(*c)
		name = "NewProdEnv"
	} else {
		env, err = NewEmulatedEnv(*c)
		name = "NewEmulatedEnv"
	}
	log.Infof("%s: %s", name, time.Since(start))
	return env, err