content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 org.apache.kafka.server.metrics;
  
  import org.apache.kafka.common.requests.PushTelemetryRequest;
  import org.apache.kafka.common.requests.RequestContext;
  import org.apache.kafka.server.telemetry.ClientTelemetryReceiver;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  /**
   * Plugin to register client telemetry receivers and export metrics. This class is used by the Kafka
   * server to export client metrics to the registered receivers.
   */
  public class ClientMetricsReceiverPlugin {
  
      private final List<ClientTelemetryReceiver> receivers;
  
      public ClientMetricsReceiverPlugin() {
          this.receivers = Collections.synchronizedList(new ArrayList<>());
      }
  
      public boolean isEmpty() {
          return receivers.isEmpty();
      }
  
      public void add(ClientTelemetryReceiver receiver) {
          receivers.add(receiver);
      }
  
      public DefaultClientTelemetryPayload getPayLoad(PushTelemetryRequest request) {
          return new DefaultClientTelemetryPayload(request);
      }
  
      public void exportMetrics(RequestContext context, PushTelemetryRequest request) {
          DefaultClientTelemetryPayload payload = getPayLoad(request);
          for (ClientTelemetryReceiver receiver : receivers) {
              receiver.exportMetrics(context, payload);
          }
      }
  }
  