Add SaveFindingsToGcs output proto conversion sample for DLP

[patrickmoy]

Description

Fixes: N/A
Note: Before submitting a pull request, please open an issue for discussion if you are not associated with Google.

Checklist

• I have followed Sample Format Guide
• pom.xml parent set to latest shared-configuration
• Appropriate changes to README are included in PR
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• Tests pass: mvn clean verify required
• Lint passes: mvn -P lint checkstyle:check required
• Static Analysis: mvn -P lint clean compile pmd:cpd-check spotbugs:check advisory only
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• Please merge this PR for me once it is approved

[snippet-bot]

Here is the summary of changes.

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• dlp/snippets/src/main/java/dlp/snippets/ProcessInspectFindingsSavedToGcs.java:19, tag dlp_process_inspect_findings_saved_to_gcs

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[gemini-code-assist]

Summary of Changes

Hello @patrickmoy, 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 introduces a new sample for Google Cloud DLP, specifically demonstrating how to process and parse findings that have been saved to Google Cloud Storage in a protobuf text format. This sample provides a practical example for developers to convert the SaveToGcsFindingsOutput proto into a usable format, enabling them to extract and analyze individual DLP findings. It also includes necessary dependency updates and a corresponding test case.

Highlights

• New DLP Sample: I've added a new Java sample, ProcessInspectFindingsSavedToGcs.java, which demonstrates how to process and parse DLP findings that have been saved to Google Cloud Storage in a protobuf text format. This sample reads a local file containing the proto output and extracts individual Finding details.
• Dependency Updates: To support the new sample's functionality, I've updated the google-cloud Bill of Materials (BOM) version in pom.xml and explicitly added the protobuf-java dependency, which is essential for parsing protobuf messages.
• New Test Case and Sample Data: A new test method, testProcessInspectFindingsSavedToGcs, has been added to InspectTests.java to validate the correctness of the new sample. This test utilizes a new resource file, save_to_gcs_findings.txt, which contains a representative sample of DLP findings in protobuf text format.

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[gemini-code-assist]

Code Review

This pull request introduces a new Java sample for DLP, demonstrating how to parse findings that have been saved to a file from a GCS inspection job. The implementation is straightforward and a corresponding test is included. My review focuses on improving correctness, maintainability, and code clarity in the new sample file. I've identified a critical resource leak and suggested a fix that also improves memory efficiency. Other recommendations include removing unused code and imports, clarifying a Javadoc comment, and updating the copyright header to be more precise. These changes will make the sample more robust and easier to understand.