[chanduc-ux]

---

Description

As per the Customer request we have created the custom parser for the below Logtype.
Log_type:
CLOUDFLARE_GATEWAY_DNS_GUS

---

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---

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[gemini-code-assist]

Summary of Changes

Hello, 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 custom parser for Cloudflare Gateway DNS logs. The implementation enables the parsing of JSON-formatted logs into the Unified Data Model (UDM), facilitating better visibility and security analysis for this specific log source.

Highlights

• New Parser Implementation: Added a custom parser for the CLOUDFLARE_GATEWAY_DNS_GUS log type to support ingestion and normalization of Cloudflare Gateway DNS logs.
• Metadata and Test Data: Included the necessary metadata configuration and test datasets (raw logs and expected UDM events) to validate the new parser.

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[gemini-code-assist]

Code Review

This pull request introduces a new Logstash parser configuration, metadata, and test data for Cloudflare Gateway DNS logs. The review feedback highlights a critical syntax error in the parser configuration where equals signs (=) were used instead of hash rockets (=>) in replace blocks. Additionally, the log_type in metadata.json needs to be updated to match the parser directory name exactly. Finally, there are opportunities to simplify and optimize the configuration by directly accessing the first element of the QueryApplicationNames and ResolvedIPCountryCodes arrays instead of using loops.