app/concerns/liquid_interpolatable.rb

@@ -14,6 +14,10 @@ module LiquidInterpolatable

                     duped_options
              

                   end
              

                 
              

                +  def interpolate_string string, payload
              

                +    Liquid::Template.parse(string).render(payload)
              

                +  end
              

                +
              

                   require 'uri'
              

                   # Percent encoding for URI conforming to RFC 3986.
              

                   # Ref: http://tools.ietf.org/html/rfc3986#page-12
              

app/models/agents/event_formatting_agent.rb

@@ -43,7 +43,7 @@ module Agents

                           {
              

                             "matchers": [
              

                               {
              

                -                "path": "$.date.pretty",
              

                +                "path": "{{date.pretty}}",
              

                                 "regexp": "\\A(?<time>\\d\\d:\\d\\d [AP]M [A-Z]+)",
              

                                 "to": "pretty_date",
              

                               }
              
@@ -162,7 +162,7 @@ module Agents

                             re = Regexp.new(regexp)
              

                             proc { |hash|
              

                               mhash = {}
              

                -              value = Utils.value_at(hash, path)
              

                +              value = interpolate_string(path, hash)
              

                               if value.is_a?(String) && (m = re.match(value))
              

                                 m.to_a.each_with_index { |s, i|
              

                                   mhash[i.to_s] = s
              

spec/models/agents/event_formatting_agent_spec.rb

@@ -12,7 +12,7 @@ describe Agents::EventFormattingAgent do

                             :mode => "clean",
              

                             :matchers => [
              

                                 {
              

                -                    :path => "$.date.pretty",
              

                +                    :path => "{{date.pretty}}",
              

                                     :regexp => "\\A(?<time>\\d\\d:\\d\\d [AP]M [A-Z]+)",
              

                                     :to => "pretty_date",
              

                                 },
              

spec/models/concerns/liquid_interpolatable.rb

@@ -27,5 +27,10 @@ shared_examples_for LiquidInterpolatable do

                           "escape" => "This should be Hello+world"
              

                       }
              

                     end
              

                +
              

                +    it "should work for strings" do
              

                +      @checker.send(:interpolate_string, "{{variable}}", @event.payload).should == "hello"
              

                +      @checker.send(:interpolate_string, "{{variable}} you", @event.payload).should == "hello you"
              

                +    end
              

                   end
              

                 end