From 80da90fad81de8c2b53ff75908a4d31da7ee554c Mon Sep 17 00:00:00 2001
From: Anton Keks <anton@azib.net>
Date: Tue, 12 Jan 2016 22:56:13 +0200
Subject: [PATCH] report first stack frame element to GA in case of unexpected
 exceptions

---
 src/net/azib/ipscan/util/GoogleAnalytics.java      |  8 +++++++-
 test/net/azib/ipscan/util/GoogleAnalyticsTest.java | 14 ++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 test/net/azib/ipscan/util/GoogleAnalyticsTest.java

diff --git a/src/net/azib/ipscan/util/GoogleAnalytics.java b/src/net/azib/ipscan/util/GoogleAnalytics.java
index da9ed279..4eec45d2 100644
--- a/src/net/azib/ipscan/util/GoogleAnalytics.java
+++ b/src/net/azib/ipscan/util/GoogleAnalytics.java
@@ -48,7 +48,13 @@ public class GoogleAnalytics {
 	}
 
 	public void report(Throwable e) {
-		report("exception", e.toString());
+		report("exception", extractFirstStackFrame(e));
+	}
+
+	static String extractFirstStackFrame(Throwable e) {
+		StackTraceElement[] stackTrace = e.getStackTrace();
+		return e.toString() + (stackTrace.length == 0 ? "" : "\n" +
+			   stackTrace[0].getClassName() + "." + stackTrace[0].getMethodName() + ":" + stackTrace[0].getLineNumber());
 	}
 
 	public void asyncReport(final String screen) {
diff --git a/test/net/azib/ipscan/util/GoogleAnalyticsTest.java b/test/net/azib/ipscan/util/GoogleAnalyticsTest.java
new file mode 100644
index 00000000..1d82905b
--- /dev/null
+++ b/test/net/azib/ipscan/util/GoogleAnalyticsTest.java
@@ -0,0 +1,14 @@
+package net.azib.ipscan.util;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class GoogleAnalyticsTest {
+	@Test
+	public void extractFirstStackFrame() throws Exception {
+		assertEquals("java.lang.RuntimeException: Kaboom\n" +
+				"net.azib.ipscan.util.GoogleAnalyticsTest.extractFirstStackFrame:10",
+				GoogleAnalytics.extractFirstStackFrame(new RuntimeException("Kaboom")));
+	}
+}
\ No newline at end of file