NIFI-7392: Add ValidateJson processor to standard bundle

[r65535]

Summary

NIFI-7392

This PR adds a ValidateJson processor to the standard bundle. It validates flowfiles against a JSON schema.

Tracking

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Issue Tracking

• [x] Apache NiFi Jira issue created

Pull Request Tracking

• [x] Pull Request title starts with Apache NiFi Jira issue number, such as NIFI-00000
• [x] Pull Request commit message starts with Apache NiFi Jira issue number, as such NIFI-00000

Pull Request Formatting

• [x] Pull Request based on current revision of the main branch
• [x] Pull Request refers to a feature branch with one commit containing changes

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Build

• [x] Build completed using mvn clean install -P contrib-check
  • [x] JDK 8
  • [ ] JDK 11
  • [ ] JDK 17

Licensing

• [x] New dependencies are compatible with the Apache License 2.0 according to the License Policy
• [x] New dependencies are documented in applicable LICENSE and NOTICE files

Documentation

• [x] Documentation formatting appears as expected in rendered files

[r65535]

Thanks for submitting a new pull request for this processor @r65535!

Before reviewing the details, there appears to be a test failure in the automated build on Windows.

Fixed - the JSON library supports French and English validation output, and my unit tests were validating the English content. My bad!

[r65535]

@exceptionfactory - do you mind taking a look at this PR? I'm keen to get it merged into the nifi code base, if possible!

[dan-s1]

@r65535 Can I help in anyway? As I mentioned before I am excited to see the development of this processor as this is exactly what we need for some of our flows. I know you did the lion's share of the work. If there is anything I can assist with please do not hesitate to reach out. Thanks!

[exceptionfactory]

@r65535 Do you have any questions on the feedback provided?

[dan-s1]

@exceptionfactory When you get a chance can you please review the changes I made? Thanks!

[r65535]

@dan-s1 - thanks for making the changes to this PR! 🥳

@exceptionfactory - do you think we could get this merged in for the 1.19.0 release?

[exceptionfactory]

Thanks for the work on this @r65535, and thanks for the updates @dan-s1. I will take a look at the updates today, it appears close to completion.

[r65535]

Thanks for helping us get this over the line @exceptionfactory!

[dan-s1]

@exceptionfactory Thanks again for all the suggestions you made for reviewing and approving!