janhoy commented on code in PR #1168:
URL: https://github.com/apache/solr/pull/1168#discussion_r1044217897
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solr/modules/opentelemetry/src/java/org/apache/solr/opentelemetry/OtelTracerConfigurator.java:
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@@ -0,0 +1,29 @@
+package org.apache.solr.opentelemetry;
+
+import io.opentelemetry.opentracingshim.OpenTracingShim;
+import io.opentelemetry.sdk.autoconfigure.AutoConfiguredOpenTelemetrySdk;
+import io.opentracing.Tracer;
+import org.apache.solr.core.TracerConfigurator;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.lang.invoke.MethodHandles;
+
+public class OtelTracerConfigurator extends TracerConfigurator {
+ private static final Logger log =
LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
+
+ @Override
+ public Tracer getTracer() {
+ // TODO: Find better way to set defaults
+ System.setProperty("OTEL_SERVICE_NAME", "solr");
+ System.setProperty("OTEL_EXPORTER_OTLP_PROTOCOL", "grpc");
+ System.setProperty("OTEL_TRACES_SAMPLER", "parentbased_always_on");
+ System.setProperty("OTEL_TRACES_EXPORTER", "otlp");
+ // Need to disable the exporters for metrics and logs
+ System.setProperty("OTEL_METRICS_EXPORTER", "none");
+ System.setProperty("OTEL_LOGS_EXPORTER", "none");
+ log.info("Configuring tracer {}...", getClass().getName());
Review Comment:
I'm keeping it for now. Could be that it could be moved to CoreContainer,
but there will ever only be one tracer configured at a time, so not less code..
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