<NME> noop.rb
<BEF> ADDFILE
<MSG> - Add a timer metric to all filters. Tracks how long we spend in each
  filter. This required some small internal changes to wrap the
  'filter' method invoked on each filter.
- Add a noop filter for testing

<DFF> @@ -0,0 +1,20 @@
+require "logstash/filters/base"
+require "logstash/namespace"
+
+# No-op filter. This is used generally for internal/dev testing.
+class LogStash::Filters::NOOP < LogStash::Filters::Base
+  config_name "noop"
+  plugin_status "beta"
+
+  public
+  def register
+    # Nothing
+  end # def register
+
+  public
+  def filter(event)
+    return unless filter?(event)
+    # Nothing to do
+    filter_matched(event)
+  end # def filter
+end # class LogStash::Filters::NOOP

- Add a timer metric to all filters. Tracks how long we spend in each   filter. This required some small internal changes to wrap the   'filter' method invoked on each filter. - Add a noop filter for testing