REST API Batch Delete -- Delete All Schemas

[bas-kirill]

Problematic

Hey, I have ~200 schemas at Schema Registry and I need to delete them all. Now I need to write bash script for it:

for subject in $(curl -s http://localhost:8081/subjects | jq -r '.[]'); do
  echo "Deleteing '$subject'"
  curl -X DELETE "http://localhost:8081/subjects/$subject?permanent=true"
done

It is pretty uncomfortable, because it is not possible to run it in Postman / Insomnia (REST Clients). So I suppose to create a new REST API endpoint for it

Goal

• As a developer, I need an option to delete all schemas by one REST API call, to reduce time on managing Schema Registry

Solution

• Create a new REST API endpoint to delete all schemas by one REST API call
• It must support soft and hard deletes
• Possible API: curl -X DELETE "http://localhost:8081/subjects[?permanent=true]"

Sources

• Confluent: Delete Schemas in Confluent, 10th April 2025
• GitHub Issue: Api to delete all subjects at one go in confluent schema registry #3228

[javrish]

Hey! I would like to work on this feature and open a PR to add a new endpoint for deleting all subjects, supporting both soft and hard deletes. Please let me know if there is any guidance or preferences I should be aware of before I start.

[bas-kirill]

Hey, I think not, so we only need a soft and hard delete of all subjects by one endpoint

[javrish]

Hi @bas-kirill

I'm currently contributing to this schema-registry issue and have been able to get most of the environment set up and started working through the changes locally.

However, I'm hitting a blocker while trying to build the common module — specifically:

Failed to execute goal io.confluent:resolver-maven-plugin:0.6.0:resolve-kafka-range
MojoExecutionException: Could not find any ccs-kafka artifacts.

It seems the resolver-maven-plugin is trying to pull in internal ccs-kafka artifacts that aren't publicly resolvable.

Is there an OSS-friendly build profile or a documented workaround to bypass this dependency, especially for external contributors?
Just looking to get past these steps so I can validate and test the changes I'm working on.

Appreciate any help!