我是OpenTracing的新手。到目前为止,我主要从事房屋追踪工具。服务器无法提取跨度上下文。
MultivaluedMap<String, String> rawHeaders = httpHeaders.getRequestHeaders();
final HashMap<String, String> headers = new HashMap<String, String>();
for (String key : rawHeaders.keySet()) {
if(key.contentEquals("deviceKey"))
headers.put(key, rawHeaders.get(key).get(0));
}
Tracer.SpanBuilder spanBuilder;
try {
SpanContext parentSpanCtx = tracer.extract(Format.Builtin.HTTP_HEADERS, new TextMapExtractAdapter(headers));
if (parentSpanCtx == null) {
spanBuilder = tracer.buildSpan(operationName);
}
else {
spanBuilder = tracer.buildSpan(operationName).asChildOf(parentSpanCtx);
}
}
catch (IllegalArgumentException e) {
spanBuilder = tracer.buildSpan(operationName);
}
答案 0 :(得分:0)
final HashMap<String, String> headers = new HashMap<String, String>();
...
if(key.contentEquals("deviceKey"))
headers.put(key, rawHeaders.get(key).get(0));
...
tracer.extract(Format.Builtin.HTTP_HEADERS, new TextMapExtractAdapter(headers))
您似乎试图基于仅包含名为deviceKey
的键的映射提取上下文。除非您使用自定义跟踪器,否则您实际上应该将所有HTTP标头传递给#extract()
方法。