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opentelemetry-java-instrumentation
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Fix race condition on loading SDK (#142)

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Trask Stalnaker 2020-02-06 19:05:34 -08:00 committed by GitHub
parent 7599e2f0c9
commit a20b444d49
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1 changed files with 8 additions and 0 deletions
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8
agent-tooling/src/main/java/io/opentelemetry/auto/tooling/AgentInstaller.java
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@ -10,6 +10,7 @@ import static net.bytebuddy.matcher.ElementMatchers.named;
import static net.bytebuddy.matcher.ElementMatchers.none;
import static net.bytebuddy.matcher.ElementMatchers.not;
import io.opentelemetry.OpenTelemetry;
import io.opentelemetry.auto.config.Config;
import java.lang.instrument.Instrumentation;
import java.util.ArrayList;
@ -52,6 +53,13 @@ public class AgentInstaller {
*/
public static ResettableClassFileTransformer installBytebuddyAgent(
final Instrumentation inst, final AgentBuilder.Listener... listeners) {
// need to trigger loading of OpenTelemetry SDK before instrumentation can possibly cause
// io.opentelemetry.OpenTelemetry to be loaded, since as soon as io.opentelemetry.OpenTelemetry,
// it looks up implementation via SPI, and if it doesn't find one, it loads the No-op
// implementation and it cannot be replaced later
OpenTelemetry.getTracerFactory();
INSTRUMENTATION = inst;
AgentBuilder agentBuilder =