on the crazy path to a better Kamon :D

1 files changed, 25 insertions, 7 deletions

diff --git a/kamon-core/src/main/resources/reference.conf b/kamon-core/src/main/resources/reference.conf
index f4d180ca..fd1c88c3 100644
--- a/kamon-core/src/main/resources/reference.conf
+++ b/kamon-core/src/main/resources/reference.conf
@@ -1,10 +1,14 @@
 kamon {
   environment {
-    application = ""
-    host = ""
-    instance = ""
+    host = "auto"
+    instance = "auto"
+    application = "kamon-application"
   }
 
+  # FQCN of the reporter instances that should be loaded when calling `Kamon.reporters.loadFromConfig()`.
+  # Example: `reporters = ["kamon.statsd.StatsD", "kamon.zipkin.Zipkin"]`.
+  reporters = []
+
   metric {
     tick-interval = 60 seconds
 
@@ -21,10 +25,6 @@ kamon {
 
     }
 
-    # FQCN of the reporter instances that should be loaded when calling `Kamon.reporters.loadFromConfig()`.
-    # Example: `reporters = ["kamon.statsd.StatsD", "kamon.zipkin.Zipkin"]`.
-    reporters = []
-
     # Thread pool size used by the metrics refresh scheduler. This pool is only used to periodically sampling
     # min-max-counter values.
     refresh-scheduler-pool-size = 2
@@ -74,4 +74,22 @@ kamon {
       }
     }
   }
+
+  trace {
+    # Configures a sample that decides which traces should be reported to the trace backends. The possible values are:
+    #   - always: report all traces.
+    #   - never:  don't report any trace.
+    #   - random: use the random tracer.
+    #
+    sampler = "random"
+
+    # The random sampler uses the "chance" setting and a random number to take a decision, if the random number is
+    # on the upper (chance * 100) percent of the number spectrum the trace will be sampled. E.g. a chance of 0.01 will
+    # hint that 1% of all traces should be reported.
+    sampler-random {
+
+      # Chance of a span being sampled. Must be a value between 0 and 1.
+      chance = 0.01
+    }
+  }
 }
\ No newline at end of file