com.navercorp.pinpoint.grpc.client.SocketIdClientInterceptor Maven / Gradle / Ivy
/*
* Copyright 2019 NAVER Corp.
*
* 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.navercorp.pinpoint.grpc.client;
import com.navercorp.pinpoint.grpc.Header;
import io.grpc.CallOptions;
import io.grpc.Channel;
import io.grpc.ClientCall;
import io.grpc.ClientInterceptor;
import io.grpc.ForwardingClientCall.SimpleForwardingClientCall;
import io.grpc.Metadata;
import io.grpc.MethodDescriptor;
import java.util.concurrent.atomic.AtomicLong;
/**
* @author Woonduk Kang(emeroad)
*/
public class SocketIdClientInterceptor implements ClientInterceptor {
private final AtomicLong socketIdAllocator = new AtomicLong();
@Override
public ClientCall interceptCall(MethodDescriptor method, CallOptions callOptions, Channel next) {
final ClientCall clientCall = next.newCall(method, callOptions);
final ClientCall forwardClientCall = new SimpleForwardingClientCall(clientCall) {
@Override
public void start(Listener responseListener, Metadata headers) {
final String socketId = nextSocketId();
headers.put(Header.SOCKET_ID, socketId);
super.start(responseListener, headers);
}
};
return forwardClientCall;
}
private String nextSocketId() {
return String.valueOf(socketIdAllocator.incrementAndGet());
}
}