chore(obs): use Span instead of AppCentric prefix for tracing

[diegomarquezp]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @diegomarquezp, 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 undertakes a significant refactoring effort to standardize the naming conventions for tracing components within the gax-java library. The primary objective is to replace the 'AppCentric' prefix with 'Span' for relevant classes, enhancing clarity and consistency with widely accepted distributed tracing concepts. This change improves the readability and maintainability of the tracing implementation, making it more intuitive for developers familiar with OpenTelemetry and similar systems.

Highlights

• Class Renaming: The core tracing class AppCentricTracer has been renamed to SpanTracer to better align with standard observability terminology.
• Factory Renaming: The associated factory class AppCentricTracerFactory has been renamed to SpanTracerFactory.
• Codebase-Wide Updates: All references, instantiations, and test cases for the renamed classes have been updated across the gax-java and java-showcase modules.

Changelog

• gax-java/gax/src/main/java/com/google/api/gax/tracing/AppCentricTracer.java
  • Renamed to SpanTracer.java
  • Updated class name, constructor, and Javadoc comments to SpanTracer
• gax-java/gax/src/main/java/com/google/api/gax/tracing/AppCentricTracerFactory.java
  • Renamed to SpanTracerFactory.java
  • Updated class name, constructors, Javadoc, and internal instantiations to SpanTracerFactory and SpanTracer
• gax-java/gax/src/test/java/com/google/api/gax/tracing/AppCentricTracerFactoryTest.java
  • Renamed to SpanTracerFactoryTest.java
  • Updated class name and references to SpanTracerFactory and SpanTracer
• gax-java/gax/src/test/java/com/google/api/gax/tracing/AppCentricTracerTest.java
  • Renamed to SpanTracerTest.java
  • Updated class name and references to SpanTracer
• java-showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITOtelTracing.java
  • Updated import statements to use SpanTracer and SpanTracerFactory
  • Modified instantiations and attribute references to reflect the new class names

Activity

• No specific activity (comments, reviews, or progress updates) has been recorded for this pull request yet.

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[gemini-code-assist]

Code Review

This pull request successfully renames AppCentricTracer to SpanTracer and AppCentricTracerFactory to SpanTracerFactory, along with updating all corresponding references in the codebase, including tests and Javadoc. This change improves the clarity and consistency of the tracing components by aligning the naming with standard observability terminology. The refactoring is clean and does not introduce any functional regressions or new issues. All changes are consistent with the pull request's objective.

[sonarqubecloud]

Quality Gate passed for 'gapic-generator-java-root'

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
96.8% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[sonarqubecloud]

Quality Gate passed for 'java_showcase_integration_tests'

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
96.8% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud