io.grpc.internal.AbstractSubchannel Maven / Gradle / Ivy
/*
* Copyright 2016, gRPC Authors All rights reserved.
*
* 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;
import com.google.common.annotations.VisibleForTesting;
import io.grpc.LoadBalancer;
import io.grpc.internal.Channelz.ChannelStats;
import javax.annotation.Nullable;
/**
* The base interface of the Subchannels returned by {@link
* io.grpc.LoadBalancer.Helper#createSubchannel}.
*/
abstract class AbstractSubchannel extends LoadBalancer.Subchannel {
/**
* Same as {@link InternalSubchannel#obtainActiveTransport}.
*/
@Nullable
abstract ClientTransport obtainActiveTransport();
/**
* Returns the InternalSubchannel as an {@code Instrumented} for the sole purpose of channelz
* unit tests.
*/
@VisibleForTesting
abstract Instrumented getInternalSubchannel();
}