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/*
 * Copyright © 2017 camunda services GmbH ([email protected])
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.camunda.zeebe.spring.client.actuator;

import io.camunda.zeebe.client.ZeebeClient;
import io.camunda.zeebe.client.api.response.Topology;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.actuate.health.AbstractHealthIndicator;
import org.springframework.boot.actuate.health.Health;

public class ZeebeClientHealthIndicator extends AbstractHealthIndicator {

  private final ZeebeClient client;

  @Autowired
  public ZeebeClientHealthIndicator(final ZeebeClient client) {
    this.client = client;
  }

  @Override
  protected void doHealthCheck(final Health.Builder builder) {
    final Topology topology = client.newTopologyRequest().send().join();
    if (topology.getBrokers().isEmpty()) {
      builder.down();
    } else {
      builder.up();
    }
  }
}