From 3baefc129d027cb0556118c80e3a0ac7e43abb67 Mon Sep 17 00:00:00 2001
From: Colin Surprenant <colin.surprenant@gmail.com>
Date: Wed, 6 Jun 2018 10:51:16 -0400
Subject: [PATCH 1/2] enable periodic flushing

---
 lib/logstash/filters/elapsed.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/logstash/filters/elapsed.rb b/lib/logstash/filters/elapsed.rb
index 9540c11..b270b16 100644
--- a/lib/logstash/filters/elapsed.rb
+++ b/lib/logstash/filters/elapsed.rb
@@ -109,6 +109,10 @@ class LogStash::Filters::Elapsed < LogStash::Filters::Base
   # to the "end event"; if it's set to `true` a new "match event" is created.
   config :new_event_on_match, :validate => :boolean, :required => false, :default => false
 
+  # This filter must have its flush function called periodically to be able to purge
+  # expired stored start events.
+  config :periodic_flush, :validate => :boolean, :default => true
+
   public
   def register
     @mutex = Mutex.new

From 94fd5b4c2e7c2e6edbaa4ceaede29c5889b439a7 Mon Sep 17 00:00:00 2001
From: Colin Surprenant <colin.surprenant@gmail.com>
Date: Thu, 7 Jun 2018 10:26:10 -0400
Subject: [PATCH 2/2] bump version to 4.0.5

---
 CHANGELOG.md                    | 3 +++
 CONTRIBUTORS                    | 1 +
 logstash-filter-elapsed.gemspec | 2 +-
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 86dad34..e715cee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 4.0.5
+  - Fixed default to true for the periodic_flush option in order for the caching expiration to work [#36](https://github.com/logstash-plugins/logstash-filter-elapsed/pull/36) 
+
 ## 4.0.4
   - Update gemspec summary
 
diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 3f87191..a3c3bbe 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -9,6 +9,7 @@ Contributors:
 * Suyog Rao (suyograo)
 * karsaroth
 * Pere Urbón (purbon)
+* Colin Surprenant (colinsurprenant)
 
 Note: If you've sent us patches, bug reports, or otherwise contributed to
 Logstash, and you aren't on the list above and want to be, please let us know
diff --git a/logstash-filter-elapsed.gemspec b/logstash-filter-elapsed.gemspec
index 60d7ac9..7898ec8 100644
--- a/logstash-filter-elapsed.gemspec
+++ b/logstash-filter-elapsed.gemspec
@@ -1,7 +1,7 @@
 Gem::Specification.new do |s|
 
   s.name            = 'logstash-filter-elapsed'
-  s.version         = '4.0.4'
+  s.version         = '4.0.5'
   s.licenses        = ['Apache License (2.0)']
   s.summary         = "Calculates the elapsed time between a pair of events"
   s.description     = "This gem is a Logstash plugin required to be installed on top of the Logstash core pipeline using $LS_HOME/bin/logstash-plugin install gemname. This gem is not a stand-alone program"