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/*
 * Copyright 2014, Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
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 *
 *    * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above
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 * in the documentation and/or other materials provided with the
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 *
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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package org.glowroot.agent.shaded.grpc;

import javax.annotation.Nullable;
import javax.annotation.concurrent.ThreadSafe;

/**
 * Mutable base class of {@link HandlerRegistry}. Used by server implementations
 * that need to bind and unbind services that are exposed to remote clients.
 *
 * @see MutableHandlerRegistryImpl
 */
@ThreadSafe
@ExperimentalApi("https://github.com/grpc/grpc-java/issues/933")
public abstract class MutableHandlerRegistry extends HandlerRegistry {
  /**
   * Returns {@code null}, or previous service if {@code service} replaced an existing service.
   */
  @Nullable
  public abstract ServerServiceDefinition addService(ServerServiceDefinition service);

  /**
   * Returns {@code false} if {@code service} was not registered.
   */
  public abstract boolean removeService(ServerServiceDefinition service);
}