Metrics measurement adjustment (#511)

The total difficulty of mainnet is larger than a signed long, so we need to adjust the way we get the number.
PegaSysEng · Jan 7, 2019 · 77d4bf6 · 77d4bf6
1 parent f576c52
commit 77d4bf6
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/ethereum/core/src/main/java/tech/pegasys/pantheon/ethereum/db/DefaultMutableBlockchain.java b/ethereum/core/src/main/java/tech/pegasys/pantheon/ethereum/db/DefaultMutableBlockchain.java
@@ -32,6 +32,7 @@
 import tech.pegasys.pantheon.metrics.MetricCategory;
 import tech.pegasys.pantheon.metrics.MetricsSystem;
 import tech.pegasys.pantheon.util.Subscribers;
+import tech.pegasys.pantheon.util.bytes.BytesValues;
 import tech.pegasys.pantheon.util.uint.UInt256;
 
 import java.util.ArrayList;
@@ -69,7 +70,9 @@ public DefaultMutableBlockchain(
         MetricCategory.BLOCKCHAIN,
         "difficulty_total",
         "Total difficulty of the chainhead",
-        () -> (double) this.getChainHead().getTotalDifficulty().toLong());
+        () ->
+            BytesValues.asUnsignedBigInteger(this.getChainHead().getTotalDifficulty().getBytes())
+                .doubleValue());
   }
 
   @Override