= datadog: force the decimal format to use dot (.) as decimal point

1 files changed, 9 insertions, 4 deletions

diff --git a/kamon-datadog/src/main/scala/kamon/datadog/DatadogMetricsSender.scala b/kamon-datadog/src/main/scala/kamon/datadog/DatadogMetricsSender.scala
index 5b7ca471..0d33ba1d 100644
--- a/kamon-datadog/src/main/scala/kamon/datadog/DatadogMetricsSender.scala
+++ b/kamon-datadog/src/main/scala/kamon/datadog/DatadogMetricsSender.scala
@@ -23,16 +23,21 @@ import akka.util.ByteString
 import kamon.metrics.Subscriptions.TickMetricSnapshot
 import kamon.metrics.MetricSnapshot.Measurement
 import kamon.metrics.InstrumentTypes.{ Counter, Gauge, Histogram, InstrumentType }
-import java.text.DecimalFormat
+import java.text.{DecimalFormatSymbols, DecimalFormat}
 import kamon.metrics.{ MetricIdentity, MetricGroupIdentity }
+import java.util.Locale
 
 class DatadogMetricsSender(remote: InetSocketAddress, maxPacketSizeInBytes: Long) extends Actor with UdpExtensionProvider {
 
   import context.system
 
   val appName = context.system.settings.config.getString("kamon.datadog.application-name")
-  val samplingRateFormat = new DecimalFormat()
-  samplingRateFormat.setMaximumFractionDigits(128) // Absurdly high, let the other end loss precision if it needs to.
+  val symbols = DecimalFormatSymbols.getInstance(Locale.US)
+  symbols.setDecimalSeparator('.') // Just in case there is some weird locale config we are not aware of.
+
+
+  // Absurdly high number of decimal digits, let the other end lose precision if it needs to.
+  val samplingRateFormat = new DecimalFormat("#.################################################################", symbols)
 
   udpExtension ! Udp.SimpleSender
 
@@ -49,7 +54,7 @@ class DatadogMetricsSender(remote: InetSocketAddress, maxPacketSizeInBytes: Long
     val dataBuilder = new MetricDataPacketBuilder(maxPacketSizeInBytes, udpSender, remote)
 
     for {
-      (groupIdentity, groupSnapshot) ← tick.metrics;
+      (groupIdentity, groupSnapshot) ← tick.metrics
       (metricIdentity, metricSnapshot) ← groupSnapshot.metrics
     } {