/*
* Copyright 2008-2009 the original author or authors.
*
* 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 net.hasor.registry.trace;
import net.hasor.rsf.RsfFilter;
import net.hasor.rsf.RsfFilterChain;
import net.hasor.rsf.RsfRequest;
import net.hasor.rsf.RsfResponse;
import net.hasor.rsf.utils.StringUtils;
/**
* 优先检查本地是否有服务提供（优先本地服务提供者的调用）。
* @version : 2014年11月30日
* @author 赵永春(zyc@hasor.net)
*/
public class TraceFilter implements RsfFilter {
private static class InnerTraceUtil extends TraceUtil {
public static void updateTraceID(String oldTreaceID) {
TraceUtil.updateTraceID(oldTreaceID);
}
}
//
public void doFilter(RsfRequest request, RsfResponse response, RsfFilterChain chain) throws Throwable {
String traceID = request.getOption(InnerTraceUtil.KEY);
if (!StringUtils.isBlank(traceID)) {
InnerTraceUtil.updateTraceID(traceID);
} else {
traceID = InnerTraceUtil.getTraceID();
}
request.addOption(InnerTraceUtil.KEY, traceID);
response.addOption(InnerTraceUtil.KEY, traceID);
chain.doFilter(request, response);
}
}