[英]OpenTracing inject/extract in Jaeger
I'm new to OpenTracing.我是 OpenTracing 的新手。 Until now I was mainly working in house tracing tool.
到目前为止,我主要从事房屋追踪工具的工作。 The server is not able to extract the span context.
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);
}
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))
You seem to be trying to extract a context based on a map containing only a key named deviceKey
.您似乎试图根据仅包含名为
deviceKey
的键的地图提取上下文。 Unless you are using a custom tracer, you should really be passing all HTTP headers to the #extract()
method.除非您使用自定义跟踪器,否则您真的应该将所有 HTTP 标头传递给
#extract()
方法。
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