lib/spectator/meter_id.rb in netflix-spectator-rb-0.2.2 vs lib/spectator/meter_id.rb in netflix-spectator-rb-0.3.0

@@ -1,9 +1,10 @@
 module Spectator
   # Identifier for a meter or Measure
   class MeterId
     attr_reader :name, :tags
+
     def initialize(name, maybe_tags = nil)
       tags = maybe_tags.nil? ? {} : maybe_tags
       @name = name.to_sym
       @tags = {}
       tags.each { |k, v| @tags[k.to_sym] = v.to_sym }
@@ -16,12 +17,32 @@
       new_tags = @tags.dup
       new_tags[key] = value
       MeterId.new(@name, new_tags)
     end
 
+    # Create a new MeterId adding the given tags
+    def with_tags(additional_tags)
+      new_tags = @tags.dup
+      additional_tags.each do |k, v|
+        new_tags[k] = v
+      end
+      MeterId.new(@name, new_tags)
+    end
+
     # Create a new MeterId with key=statistic and the given value
     def with_stat(stat_value)
       with_tag(:statistic, stat_value)
+    end
+
+    # Get a MeterId with a statistic tag. If the current MeterId
+    # already includes statistic then just return it, otherwise create
+    # a new one
+    def with_default_stat(stat_value)
+      if tags.key?(:statistic)
+        self
+      else
+        with_tag(:statistic, stat_value)
+      end
     end
 
     # lazyily compute a key to be used in hashes for efficiency
     def key
       @key ||= begin