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ForwardingServerBuilder.java
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ForwardingServerBuilder.java
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/*
* Copyright 2020 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;
import com.google.common.base.MoreObjects;
import com.google.errorprone.annotations.DoNotCall;
import java.io.File;
import java.io.InputStream;
import java.util.concurrent.Executor;
import java.util.concurrent.TimeUnit;
import javax.annotation.Nullable;
/**
* A {@link ServerBuilder} that delegates all its builder methods to another builder by default.
*
* @param <T> The type of the subclass extending this abstract class.
* @since 1.34.0
*/
@ExperimentalApi("https://github.com/grpc/grpc-java/issues/7393")
public abstract class ForwardingServerBuilder<T extends ServerBuilder<T>> extends ServerBuilder<T> {
/** The default constructor. */
protected ForwardingServerBuilder() {}
/**
* This method serves to force sub classes to "hide" this static factory.
*/
@DoNotCall("Unsupported")
public static ServerBuilder<?> forPort(int port) {
throw new UnsupportedOperationException("Subclass failed to hide static factory");
}
/**
* Returns the delegated {@code ServerBuilder}.
*/
protected abstract ServerBuilder<?> delegate();
@Override
public T directExecutor() {
delegate().directExecutor();
return thisT();
}
@Override
public T executor(@Nullable Executor executor) {
delegate().executor(executor);
return thisT();
}
@Override
public T callExecutor(ServerCallExecutorSupplier executorSupplier) {
delegate().callExecutor(executorSupplier);
return thisT();
}
@Override
public T addService(ServerServiceDefinition service) {
delegate().addService(service);
return thisT();
}
@Override
public T addService(BindableService bindableService) {
delegate().addService(bindableService);
return thisT();
}
@Override
public T intercept(ServerInterceptor interceptor) {
delegate().intercept(interceptor);
return thisT();
}
@Override
public T addTransportFilter(ServerTransportFilter filter) {
delegate().addTransportFilter(filter);
return thisT();
}
@Override
public T addStreamTracerFactory(ServerStreamTracer.Factory factory) {
delegate().addStreamTracerFactory(factory);
return thisT();
}
@Override
public T fallbackHandlerRegistry(@Nullable HandlerRegistry fallbackRegistry) {
delegate().fallbackHandlerRegistry(fallbackRegistry);
return thisT();
}
@Override
public T useTransportSecurity(File certChain, File privateKey) {
delegate().useTransportSecurity(certChain, privateKey);
return thisT();
}
@Override
public T useTransportSecurity(InputStream certChain, InputStream privateKey) {
delegate().useTransportSecurity(certChain, privateKey);
return thisT();
}
@Override
public T decompressorRegistry(@Nullable DecompressorRegistry registry) {
delegate().decompressorRegistry(registry);
return thisT();
}
@Override
public T compressorRegistry(@Nullable CompressorRegistry registry) {
delegate().compressorRegistry(registry);
return thisT();
}
@Override
public T handshakeTimeout(long timeout, TimeUnit unit) {
delegate().handshakeTimeout(timeout, unit);
return thisT();
}
@Override
public T keepAliveTime(long keepAliveTime, TimeUnit timeUnit) {
delegate().keepAliveTime(keepAliveTime, timeUnit);
return thisT();
}
@Override
public T keepAliveTimeout(long keepAliveTimeout, TimeUnit timeUnit) {
delegate().keepAliveTimeout(keepAliveTimeout, timeUnit);
return thisT();
}
@Override
public T maxConnectionIdle(long maxConnectionIdle, TimeUnit timeUnit) {
delegate().maxConnectionIdle(maxConnectionIdle, timeUnit);
return thisT();
}
@Override
public T maxConnectionAge(long maxConnectionAge, TimeUnit timeUnit) {
delegate().maxConnectionAge(maxConnectionAge, timeUnit);
return thisT();
}
@Override
public T maxConnectionAgeGrace(long maxConnectionAgeGrace, TimeUnit timeUnit) {
delegate().maxConnectionAgeGrace(maxConnectionAgeGrace, timeUnit);
return thisT();
}
@Override
public T permitKeepAliveTime(long keepAliveTime, TimeUnit timeUnit) {
delegate().permitKeepAliveTime(keepAliveTime, timeUnit);
return thisT();
}
@Override
public T permitKeepAliveWithoutCalls(boolean permit) {
delegate().permitKeepAliveWithoutCalls(permit);
return thisT();
}
@Override
public T maxInboundMessageSize(int bytes) {
delegate().maxInboundMessageSize(bytes);
return thisT();
}
@Override
public T maxInboundMetadataSize(int bytes) {
delegate().maxInboundMetadataSize(bytes);
return thisT();
}
@Override
public T setBinaryLog(BinaryLog binaryLog) {
delegate().setBinaryLog(binaryLog);
return thisT();
}
/**
* Returns the {@link Server} built by the delegate by default. Overriding method can return
* different value.
*/
@Override
public Server build() {
return delegate().build();
}
@Override
public String toString() {
return MoreObjects.toStringHelper(this).add("delegate", delegate()).toString();
}
/**
* Returns the correctly typed version of the builder.
*/
private T thisT() {
@SuppressWarnings("unchecked")
T thisT = (T) this;
return thisT;
}
}