org.glowroot.agent.shaded.grpc.internal.AbstractServerImplBuilder Maven / Gradle / Ivy
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package org.glowroot.agent.shaded.grpc.internal;
import org.glowroot.agent.shaded.google.common.base.Preconditions;
import org.glowroot.agent.shaded.grpc.HandlerRegistry;
import org.glowroot.agent.shaded.grpc.Internal;
import org.glowroot.agent.shaded.grpc.MutableHandlerRegistry;
import org.glowroot.agent.shaded.grpc.MutableHandlerRegistryImpl;
import org.glowroot.agent.shaded.grpc.ServerBuilder;
import org.glowroot.agent.shaded.grpc.ServerServiceDefinition;
import java.util.concurrent.Executor;
import javax.annotation.Nullable;
/**
* The base class for server builders.
*
* @param The concrete type for this builder.
*/
public abstract class AbstractServerImplBuilder>
extends ServerBuilder {
private final HandlerRegistry registry;
@Nullable
private Executor executor;
/**
* Constructs using a given handler registry.
*/
protected AbstractServerImplBuilder(HandlerRegistry registry) {
this.registry = Preconditions.checkNotNull(registry);
}
/**
* Constructs with a MutableHandlerRegistry created internally.
*/
protected AbstractServerImplBuilder() {
this.registry = new MutableHandlerRegistryImpl();
}
@Override
public final T executor(@Nullable Executor executor) {
this.executor = executor;
return thisT();
}
/**
* Adds a service implementation to the handler registry.
*
* This is supported only if the user didn't provide a handler registry, or the provided one is
* a {@link MutableHandlerRegistry}. Otherwise it throws an UnsupportedOperationException.
*/
@Override
public final T addService(ServerServiceDefinition service) {
if (registry instanceof MutableHandlerRegistry) {
((MutableHandlerRegistry) registry).addService(service);
return thisT();
}
throw new UnsupportedOperationException("Underlying HandlerRegistry is not mutable");
}
@Override
public ServerImpl build() {
org.glowroot.agent.shaded.grpc.internal.Server transportServer = buildTransportServer();
return new ServerImpl(executor, registry, transportServer);
}
/**
* Children of AbstractServerBuilder should override this method to provide transport specific
* information for the server. This method is mean for Transport implementors and should not be
* used by normal users.
*/
@Internal
protected abstract org.glowroot.agent.shaded.grpc.internal.Server buildTransportServer();
private T thisT() {
@SuppressWarnings("unchecked")
T thisT = (T) this;
return thisT;
}
}