Apache Kafka

Manage topics, consumer groups, and messages via the Confluent REST Proxy.

List topics

curl -s "http://localhost:8082/topics" | jq '.[]'

Get topic details

curl -s "http://localhost:8082/topics/TOPIC_NAME" | jq '{name, partitions: (.partitions | length), configs}'

Produce message

curl -s -X POST -H "Content-Type: application/vnd.kafka.json.v2+json" \
  "http://localhost:8082/topics/TOPIC_NAME" \
  -d '{"records":[{"key":"key1","value":{"message":"hello"}}]}' | jq '.offsets[]'

Create consumer

curl -s -X POST -H "Content-Type: application/vnd.kafka.v2+json" \
  "http://localhost:8082/consumers/my-group" \
  -d '{"name":"my-consumer","format":"json","auto.offset.reset":"earliest"}' | jq '{instance_id, base_uri}'

Consume messages

curl -s -H "Accept: application/vnd.kafka.json.v2+json" \
  "http://localhost:8082/consumers/my-group/instances/my-consumer/records" | jq '.[] | {topic, key, value, offset}'

Notes

• Requires Confluent REST Proxy running (default port 8082).
• Always confirm before producing messages.