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/*
 * Copyright 2015 The gRPC Authors
 *
 * 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.grpc.internal;

/**
 * An allocator of buffers provided by the transport implementation to {@link MessageFramer} so
 * it can send chunks of data to the transport in a form that the transport can directly serialize.
 */
public interface WritableBufferAllocator {

  /**
   * Request a new {@link WritableBuffer} with the given {@code capacityHint}. The allocator is
   * free to return a buffer with a greater or lesser capacity.
   */
  WritableBuffer allocate(int capacityHint);
}