com.netflix.genie.web.agent.apis.rpc.servers.GRpcServerUtils Maven / Gradle / Ivy
/*
*
* Copyright 2019 Netflix, Inc.
*
* 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 com.netflix.genie.web.agent.apis.rpc.servers;
import io.grpc.Server;
import lombok.extern.slf4j.Slf4j;
import java.io.IOException;
/**
* Utilities for working with a gRPC {@link Server} instance.
*
* @author tgianos
* @since 4.0.0
*/
@Slf4j
@SuppressWarnings("FinalClass")
public class GRpcServerUtils {
/**
* Utility class.
*/
private GRpcServerUtils() {
}
/**
* Attempt to start a gRpc server on this node.
*
* @param server The server to start
* @return The port the server is running on.
* @throws IllegalStateException If we're unable to start the server
*/
public static int startServer(final Server server) throws IllegalStateException {
try {
server.start();
final int port = server.getPort();
log.info("Successfully started gRPC server on port {}", port);
return port;
} catch (final IllegalStateException ise) {
final int port = server.getPort();
log.info("Server already started on port {}", port);
return port;
} catch (final IOException ioe) {
throw new IllegalStateException("Unable to start gRPC server on port " + server.getPort(), ioe);
}
}
}