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 com.datastax.oss.driver.internal.core.channel;
  
  import com.datastax.oss.protocol.internal.Frame;
  import java.util.ArrayDeque;
  import java.util.Queue;
  import java.util.function.Predicate;
  
  class MockResponseCallback implements ResponseCallback {
    private final Queue<Object> responses = new ArrayDeque<>();
    private final Predicate<Frame> isLastResponse;
  
    volatile int streamId = -1;
  
    MockResponseCallback() {
      this(f -> true);
    }
  
    MockResponseCallback(Predicate<Frame> isLastResponse) {
      this.isLastResponse = isLastResponse;
    }
  
    @Override
    public void onResponse(Frame responseFrame) {
      responses.offer(responseFrame);
    }
  
    @Override
    public void onFailure(Throwable error) {
      responses.offer(error);
    }
  
    @Override
    public boolean isLastResponse(Frame responseFrame) {
      return isLastResponse.test(responseFrame);
    }
  
    @Override
    public void onStreamIdAssigned(int streamId) {
      this.streamId = streamId;
    }
  
    Frame getLastResponse() {
      return (Frame) responses.poll();
    }
  
    Throwable getFailure() {
      return (Throwable) responses.poll();
    }
  }
  