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.bookkeeper.common.grpc.proxy;
  
  import io.grpc.Channel;
  import io.grpc.Metadata;
  import io.grpc.ServerCall;
  
  /**
   * Find a grpc {@link io.grpc.Channel} to route the requests.
   */
  public interface ChannelFinder {
  
      /**
       * Find a channel to route the server call.
       *
       * @param serverCall server call
       * @param headers request metadata
       * @return channel to route the server call.
       */
      Channel findChannel(ServerCall<?, ?> serverCall,
                          Metadata headers);
  
  }
  