io.grpc.internal.ForwardingNameResolver Maven / Gradle / Ivy
/*
* Copyright 2017 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;
import static com.google.common.base.Preconditions.checkNotNull;
import com.google.common.base.MoreObjects;
import io.grpc.NameResolver;
/**
* A forwarding class to ensure non overridden methods are forwarded to the delegate.
*/
abstract class ForwardingNameResolver extends NameResolver {
private final NameResolver delegate;
ForwardingNameResolver(NameResolver delegate) {
checkNotNull(delegate, "delegate can not be null");
this.delegate = delegate;
}
@Override
public String getServiceAuthority() {
return delegate.getServiceAuthority();
}
@Override
public void start(Listener listener) {
delegate.start(listener);
}
@Override
public void shutdown() {
delegate.shutdown();
}
@Override
public void refresh() {
delegate.refresh();
}
@Override
public String toString() {
return MoreObjects.toStringHelper(this).add("delegate", delegate).toString();
}
}