1 files changed, 36 insertions, 0 deletions
diff --git a/lib/gitlab/sherlock/line_sample.rb b/lib/gitlab/sherlock/line_sample.rb
new file mode 100644
index 00000000000..eb1948eb6d6
--- /dev/null
+++ b/lib/gitlab/sherlock/line_sample.rb
@@ -0,0 +1,36 @@
+module Gitlab
+  module Sherlock
+    class LineSample
+      attr_reader :duration, :events
+
+      # duration - The execution time in milliseconds.
+      # events - The amount of events.
+      def initialize(duration, events)
+        @duration = duration
+        @events = events
+      end
+
+      # Returns the sample duration percentage relative to the given duration.
+      #
+      # Example:
+      #
+      #     sample.duration            # => 150
+      #     sample.percentage_of(1500) # => 10.0
+      #
+      # total_duration - The total duration to compare with.
+      #
+      # Returns a float
+      def percentage_of(total_duration)
+        (duration.to_f / total_duration) * 100.0
+      end
+
+      # Returns true if the current sample takes up the majority of the given
+      # duration.
+      #
+      # total_duration - The total duration to compare with.
+      def majority_of?(total_duration)
+        percentage_of(total_duration) >= 30
+      end
+    end
+  end
+end