com.navercorp.pinpoint.grpc.server.MetadataServerTransportFilter 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 io.grpc.Attributes;
import io.grpc.ServerTransportFilter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Objects;
public class MetadataServerTransportFilter extends ServerTransportFilter {
public static final Attributes.Key LOG_ID = Attributes.Key.create("logId");
public static final Attributes.Key TRANSPORT_METADATA_KEY = Attributes.Key.create("transportMetadata");
private final Logger logger = LoggerFactory.getLogger(this.getClass());
private final TransportMetadataFactory transportMetadataFactory;
public MetadataServerTransportFilter(TransportMetadataFactory transportMetadataFactory) {
this.transportMetadataFactory = Objects.requireNonNull(transportMetadataFactory, "transportMetadataFactory");
}
@Override
public Attributes transportReady(Attributes attributes) {
final TransportMetadata transportMetadata = transportMetadataFactory.build(attributes);
if (logger.isDebugEnabled()) {
logger.debug("transportReady transportMetadata={}", transportMetadata);
}
Attributes.Builder builder = attributes.toBuilder();
builder.set(TRANSPORT_METADATA_KEY, transportMetadata);
return builder.build();
}
@Override
public void transportTerminated(Attributes transportAttrs) {
if (logger.isDebugEnabled()) {
logger.debug("transportTerminated attributes={}", transportAttrs);
}
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("MetadataServerTransportFilter{");
sb.append("transportMetadataFactory=").append(transportMetadataFactory);
sb.append('}');
return sb.toString();
}
}