/*
 * Copyright 2022 Confluent Inc.
 *
 * Licensed under the Confluent Community License (the "License"); you may not use
 * this file except in compliance with the License.  You may obtain a copy of the
 * License at
 *
 * http://www.confluent.io/confluent-community-license
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OF ANY KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations under the License.
 */

package io.confluent.ksql.internal;

import static org.apache.kafka.streams.KafkaStreams.State;

import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
import io.confluent.ksql.engine.QueryEventListener;
import io.confluent.ksql.engine.TransientQueryCleanupService;
import io.confluent.ksql.util.QueryMetadata;
import io.confluent.ksql.util.TransientQueryMetadata;

public class TransientQueryCleanupListener implements QueryEventListener {
  private final TransientQueryCleanupService cleanupService;

  @SuppressFBWarnings(value = "EI_EXPOSE_REP2")
  public TransientQueryCleanupListener(
        final TransientQueryCleanupService cleanupService) {
    this.cleanupService = cleanupService;
  }

  @Override
  public void onStateChange(final QueryMetadata query,
                     final State before,
                     final State after) {
    if (query instanceof TransientQueryMetadata && before.isRunningOrRebalancing()) {
      final String applicationId = query.getQueryApplicationId();
      cleanupService.registerRunningQuery(applicationId);
    }
  }
}
