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package io.grpc.examples.helloworld; | |
import io.grpc.ManagedChannel; | |
import io.grpc.ManagedChannelBuilder; | |
import io.grpc.StatusRuntimeException; | |
import io.grpc.stub.StreamObserver; | |
import java.util.concurrent.TimeUnit; | |
import java.util.logging.Level; | |
import java.util.logging.Logger; | |
public class HelloWorldClient { | |
private static final Logger logger = Logger.getLogger(HelloWorldClient.class.getName()); | |
private final GreeterGrpc.GreeterStub stub; | |
/** Construct client for accessing HelloWorld server using the existing channel. */ | |
public HelloWorldClient(ManagedChannel channel) { | |
stub = GreeterGrpc.newStub(channel); | |
} | |
/** Say hello to server. */ | |
public void greet(String name, StreamObserver<HelloReply> responseObserver) { | |
HelloRequest request = HelloRequest.newBuilder().setName(name).build(); | |
try { | |
stub.withDeadlineAfter(10, TimeUnit.MILLISECONDS).sayHello(request, responseObserver); | |
} catch (StatusRuntimeException e) { | |
logger.log(Level.WARNING, "RPC failed: {0}", e.getStatus()); | |
return; | |
} | |
} | |
public static void main(String[] args) throws Exception { | |
ManagedChannel channel = | |
ManagedChannelBuilder.forTarget("localhost:50051").usePlaintext().build(); | |
HelloWorldClient client = new HelloWorldClient(channel); | |
while (true) { | |
client.greet("a".repeat(100000), responseObserver); | |
Thread.sleep(1); | |
} | |
} | |
static StreamObserver<HelloReply> responseObserver = | |
new StreamObserver<HelloReply>() { | |
@Override | |
public void onNext(HelloReply reply) { | |
} | |
@Override | |
public void onError(Throwable t) { | |
logger.info(t.getMessage()); | |
} | |
@Override | |
public void onCompleted() { | |
} | |
}; | |
} |
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