Fix Enhance error handling in ChatMessageUtil and DataUrlUtil classes review

[isontheline]

Summary by CodeRabbit

• Bug Fixes
  • Improved error handling in the contentsListFrom method to prevent runtime errors from null inputs.
  • Enhanced the convertFileToDataImageBase64 method to use a default MIME type if the provided mimeType is null, ensuring reliability in image conversion.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

The recent changes enhance the robustness of two utility classes by improving error handling in specific methods. In ChatMessageUtil, a null check was added to the contentsListFrom method to prevent NullPointerException, ensuring safer iteration over its input. Similarly, in DataUrlUtil, the convertFileToDataImageBase64 method now includes a default MIME type when the input is null, increasing reliability in handling image conversion processes.

Changes

File Path	Change Summary
backend/src/main/java/ai/dragon/util/ChatMessageUtil.java	Added null check in contentsListFrom method to prevent NullPointerException.
backend/src/main/java/ai/dragon/util/DataUrlUtil.java	Added default MIME type handling in convertFileToDataImageBase64 method to ensure valid MIME type.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant ChatMessageUtil
    participant DataUrlUtil

    User->>ChatMessageUtil: Call contentsListFrom(content)
    alt content is not null
        ChatMessageUtil->>ChatMessageUtil: Process content items
    else content is null
        ChatMessageUtil->>User: Return empty list
    end

    User->>DataUrlUtil: Call convertFileToDataImageBase64(file)
    alt mimeType is valid
        DataUrlUtil->>DataUrlUtil: Convert file to Base64
    else mimeType is null
        DataUrlUtil->>DataUrlUtil: Use "application/octet-stream"
        DataUrlUtil->>DataUrlUtil: Convert file to Base64
    end

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[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

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

See analysis details on SonarCloud