dsmiley commented on code in PR #1854:
URL: https://github.com/apache/solr/pull/1854#discussion_r1300892286
##########
solr/core/src/test/org/apache/solr/util/tracing/TestSimplePropagatorDistributedTracing.java:
##########
@@ -114,6 +115,26 @@ public void test() throws IOException, SolrServerException
{
}
}
+ @Test
+ public void testApacheClient() throws Exception {
+ // call api that uses apache client impl
Review Comment:
where is the Apache Client used? Keep in mind that over time we'll get rid
of that client so it'll be mysterious looking at this test later.
##########
solr/core/src/java/org/apache/solr/util/stats/InstrumentedHttpRequestExecutor.java:
##########
@@ -147,6 +152,13 @@ public HttpResponse execute(HttpRequest request,
HttpClientConnection conn, Http
}
}
+ private static final TextMapSetter<HttpRequest> TRACE_INJECTOR = (r, k, v)
-> r.setHeader(k, v);
+
+ private static void injectContextIntoRequest(HttpRequest request) {
+ TextMapPropagator textMapPropagator = TraceUtils.getTextMapPropagator();
+ textMapPropagator.inject(Context.current(), request, TRACE_INJECTOR);
+ }
+
Review Comment:
Is declaring TRACE_INJECTOR useful for a performance perspective? It kinda
makes me sad to not see a trivial lambda used as such.
##########
solr/core/src/java/org/apache/solr/util/stats/InstrumentedHttpRequestExecutor.java:
##########
@@ -147,6 +152,13 @@ public HttpResponse execute(HttpRequest request,
HttpClientConnection conn, Http
}
}
+ private static final TextMapSetter<HttpRequest> TRACE_INJECTOR = (r, k, v)
-> r.setHeader(k, v);
+
+ private static void injectContextIntoRequest(HttpRequest request) {
+ TextMapPropagator textMapPropagator = TraceUtils.getTextMapPropagator();
+ textMapPropagator.inject(Context.current(), request, TRACE_INJECTOR);
+ }
+
Review Comment:
Worthy of it's own JIRA issue IMO.
Also, I suggest putting the word "trace" into this method name instead of
"Context" which is overly general.
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