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.controller;
  
  import org.apache.kafka.common.errors.ThrottlingQuotaExceededException;
  import org.apache.kafka.common.message.RequestHeaderData;
  import org.apache.kafka.common.security.auth.KafkaPrincipal;
  import org.apache.kafka.common.utils.Time;
  import org.apache.kafka.server.authorizer.AuthorizableRequestContext;
  
  import java.util.OptionalLong;
  import java.util.function.Consumer;
  
  import static java.util.concurrent.TimeUnit.MILLISECONDS;
  import static java.util.concurrent.TimeUnit.NANOSECONDS;
  
  
  public class ControllerRequestContext {
  
      public static OptionalLong requestTimeoutMsToDeadlineNs(
          Time time,
          int millisecondsOffset
      ) {
          return OptionalLong.of(time.nanoseconds() + NANOSECONDS.convert(millisecondsOffset, MILLISECONDS));
      }
  
      private final KafkaPrincipal principal;
      private final OptionalLong deadlineNs;
      private final RequestHeaderData requestHeader;
  
      private final Consumer<Integer> partitionChangeQuotaApplier;
  
      public ControllerRequestContext(
          RequestHeaderData requestHeader,
          KafkaPrincipal principal,
          OptionalLong deadlineNs
      ) {
          this(requestHeader, principal, deadlineNs, __ -> { });
      }
  
      public ControllerRequestContext(
          RequestHeaderData requestHeader,
          KafkaPrincipal principal,
          OptionalLong deadlineNs,
          Consumer<Integer> partitionChangeQuotaApplier
      ) {
          this.requestHeader = requestHeader;
          this.principal = principal;
          this.deadlineNs = deadlineNs;
          this.partitionChangeQuotaApplier = partitionChangeQuotaApplier;
      }
  
      public ControllerRequestContext(
          AuthorizableRequestContext requestContext,
          OptionalLong deadlineNs
      ) {
          this(requestContext, deadlineNs, __ -> { });
      }
  
      public ControllerRequestContext(
          AuthorizableRequestContext requestContext,
          OptionalLong deadlineNs,
          Consumer<Integer> partitionChangeQuotaApplier
      ) {
          this(
              new RequestHeaderData()
                  .setRequestApiKey((short) requestContext.requestType())
                  .setRequestApiVersion((short) requestContext.requestVersion())
                  .setCorrelationId(requestContext.correlationId())
                  .setClientId(requestContext.clientId()),
              requestContext.principal(),
              deadlineNs,
              partitionChangeQuotaApplier
          );
      }
  
      public RequestHeaderData requestHeader() {
          return requestHeader;
      }
  
      public KafkaPrincipal principal() {
          return principal;
      }
  
      public OptionalLong deadlineNs() {
          return deadlineNs;
      }
  
      /**
       * Apply the partition change quota.
       *
       * @param requestedPartitionCount           The value to apply.
       * @throws ThrottlingQuotaExceededException If recording this value moves a metric beyond its configured
       *                                          maximum or minimum bound
       */
      public void applyPartitionChangeQuota(int requestedPartitionCount) {
          partitionChangeQuotaApplier.accept(requestedPartitionCount);
      }
  }
  