com.navercorp.pinpoint.grpc.server.HeaderPropagationInterceptor 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.server;
import com.navercorp.pinpoint.grpc.Header;
import com.navercorp.pinpoint.grpc.HeaderReader;
import io.grpc.Context;
import io.grpc.Contexts;
import io.grpc.Metadata;
import io.grpc.ServerCall;
import io.grpc.ServerCallHandler;
import io.grpc.ServerInterceptor;
import io.grpc.Status;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Objects;
/**
* @author Woonduk Kang(emeroad)
*/
public class HeaderPropagationInterceptor implements ServerInterceptor {
private final Logger logger = LoggerFactory.getLogger(this.getClass());
private final HeaderReader headerReader;
private final Context.Key contextKey;
public HeaderPropagationInterceptor(HeaderReader headerReader) {
this(headerReader, ServerContext.getAgentInfoKey());
}
public HeaderPropagationInterceptor(HeaderReader headerReader, Context.Key contextKey) {
this.headerReader = Objects.requireNonNull(headerReader, "headerReader");
this.contextKey = Objects.requireNonNull(contextKey, "contextKey");
}
@Override
public ServerCall.Listener interceptCall(final ServerCall call, Metadata headers, ServerCallHandler next) {
Header headerObject;
try {
headerObject = headerReader.extract(headers);
} catch (Exception e) {
if (logger.isInfoEnabled()) {
logger.info("Header extract fail cause={}, method={} headers={}, attr={}",
e.getMessage(), call.getMethodDescriptor().getFullMethodName(), headers, call.getAttributes(), e);
}
call.close(Status.INVALID_ARGUMENT.withDescription(e.getMessage()), new Metadata());
return new ServerCall.Listener() {
};
}
final Context currentContext = Context.current();
final Context newContext = currentContext.withValue(contextKey, headerObject);
if (logger.isDebugEnabled()) {
logger.debug("headerPropagation method={}, headers={}, attr={}", call.getMethodDescriptor().getFullMethodName(), headers, call.getAttributes());
}
ServerCall.Listener contextPropagateInterceptor = Contexts.interceptCall(newContext, call, headers, next);
return contextPropagateInterceptor;
}
}