From 41a9d104a83bfcf7ed388daf4724dcd7f68237ff Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juraci=20Paix=C3=A3o=20Kr=C3=B6hling?= <juraci@kroehling.de>
Date: Fri, 7 Sep 2018 12:41:18 +0200
Subject: [PATCH] Close tracer on JVM shutdown
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Signed-off-by: Juraci Paixão Kröhling <juraci@kroehling.de>
---
 .../main/java/io/jaegertracing/internal/JaegerTracer.java | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/jaeger-core/src/main/java/io/jaegertracing/internal/JaegerTracer.java b/jaeger-core/src/main/java/io/jaegertracing/internal/JaegerTracer.java
index 8d2a62452..c586bbb2c 100644
--- a/jaeger-core/src/main/java/io/jaegertracing/internal/JaegerTracer.java
+++ b/jaeger-core/src/main/java/io/jaegertracing/internal/JaegerTracer.java
@@ -120,6 +120,14 @@ protected JaegerTracer(JaegerTracer.Builder builder) {
     }
     this.ipv4 = ipv4;
     this.tags = Collections.unmodifiableMap(tags);
+
+    // register this tracer with a shutdown hook, to flush the spans before the VM shuts down
+    Runtime.getRuntime().addShutdownHook(new Thread() {
+      @Override
+      public void run() {
+        JaegerTracer.this.close();
+      }
+    });
   }
 
   public String getVersion() {