feat(ingest): Support protobuf description for enum field

[eunseokyang]

Checklist

• The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)
• Links to related issues (if applicable)
• Tests for the changes have been added/updated (if applicable)
• Docs related to the changes have been added/updated (if applicable). If a new feature has been added a Usage Guide has been added for the same.
• For any breaking change/potential downtime/deprecation/big changes an entry has been made in Updating DataHub

Summary

This PR introduces support for displaying descriptions for enum fields in Protobuf schemas during ingestion in DataHub. A new method has been added to ensure these descriptions are properly captured and shown.

Screenshots

enum TimestampUnitType {
  MILLISECOND = 0; // 10^-3 seconds
  MICROSECOND = 1; // 10^-6 seconds
  NANOSECOND = 2; // 10^-9 seconds
}

As-Is:

Enum field descriptions are not displayed during Protobuf ingestion.
To-Be:

Enum field descriptions are now correctly displayed.

Summary by CodeRabbit

• New Features
  • Introduced methods for enhanced enum handling in Protobuf definitions, allowing for easier retrieval of enum descriptors and values with comments.
• Refactor
  • Streamlined the visitField method for better clarity and modularity, resulting in improved code maintainability.
  • Added helper methods for creating schema fields and generating field descriptions, enhancing readability and separation of concerns.

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Walkthrough

The recent changes enhance the ProtobufField and ProtobufExtensionFieldVisitor classes, introducing new methods for handling enum types and streamlining existing logic. The updates improve code readability and maintainability by breaking down complex methods into smaller, focused units. This modular approach facilitates easier future modifications and clarifies the functionality of the code, particularly in managing field descriptions and tag associations.

Changes

Files	Change Summary
metadata-integration/java/datahub-protobuf/src/main/java/datahub/protobuf/model/ProtobufField.java	Added methods for handling enum types and refactored existing methods for better readability and maintainability.
metadata-integration/java/datahub-protobuf/src/main/java/datahub/protobuf/visitors/field/ProtobufExtensionFieldVisitor.java	Refactored visitField method, introducing helper methods for tag and glossary term processing, and abstracted SchemaField creation for clarity.

Poem

🐇 In the land where fields do play,
New methods hop in bright array.
Enums dance with comments near,
Code now sings, so crisp and clear!
With every change, a joyful leap,
Our Protobuf dreams, we’ll gladly keep! ✨

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[coderabbitai]

Actionable comments posted: 0

Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

Commits

Files that changed from the base of the PR and between a6eb1f4 and efb9c7a.

Files selected for processing (2)

• metadata-integration/java/datahub-protobuf/src/main/java/datahub/protobuf/model/ProtobufField.java (5 hunks)
• metadata-integration/java/datahub-protobuf/src/main/java/datahub/protobuf/visitors/field/ProtobufExtensionFieldVisitor.java (3 hunks)

Additional comments not posted (10)

metadata-integration/java/datahub-protobuf/src/main/java/datahub/protobuf/visitors/field/ProtobufExtensionFieldVisitor.java (6)

38-44: Refactored method improves readability and maintainability.

The visitField method has been refactored to call helper methods for tag and glossary term associations and to encapsulate the logic for creating a SchemaField. This improves readability and maintainability.

---

46-64: Well-structured method for creating SchemaField.

The createSchemaField method consolidates the logic for setting various properties of the SchemaField, improving code clarity and maintainability.

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66-78: Isolated logic for generating field descriptions.

The createFieldDescription method effectively isolates the logic for generating field descriptions, especially for enum types, improving readability and maintainability.

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80-93: Isolated logic for appending enum values and comments.

The appendEnumValues method effectively isolates the logic for appending enum values and their comments to the description string, improving readability and maintainability.

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95-108: Isolated logic for retrieving and processing tag associations.

The getTagAssociations method effectively isolates the logic for retrieving and processing tag associations, improving readability and maintainability.

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110-119: Isolated logic for retrieving and processing glossary term associations.

The getGlossaryTermAssociations method effectively isolates the logic for retrieving and processing glossary term associations, improving readability and maintainability.

metadata-integration/java/datahub-protobuf/src/main/java/datahub/protobuf/model/ProtobufField.java (4)

320-322: Correctly identifies enum fields.

The isEnum method correctly identifies if a field is of enum type by comparing the field's type to TYPE_ENUM.

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324-335: Correctly retrieves enum descriptor.

The getEnumDescriptor method correctly retrieves the enum descriptor for enum fields by extracting the short enum type name and finding the matching enum descriptor.

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337-341: Correctly retrieves enum values.

The getEnumValues method correctly retrieves the enum values for enum fields by calling getEnumDescriptor and getting the value list.

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343-369: Correctly retrieves enum values and comments.

The getEnumValuesWithComments method correctly retrieves the enum values and their associated comments for enum fields by mapping the enum values to their comments using the source code locations.

[david-leifker]

Very nice! Please add or update 1 unit test with an enum. Thanks!

[eunseokyang]

@david-leifker Thank you for your time and assistance. I added a test case for enum in proto, so please take another look! 9a76918

[david-leifker]

Thanks!