Adding delayed stop. Elegant shutdown so swarm can properly remove it during shutdown

Author: davezuckerman

Gemfile

@@ -10,6 +10,7 @@ gem 'berkeley_library-docker', '~> 0.2.0'
 gem 'berkeley_library-logging', '~> 0.3.0'
 gem 'berkeley_library-marc', '~> 0.3.2'
 gem 'berkeley_library-util', '~> 0.3.0'
+gem 'puma-plugin-delayed_stop', '~> 0.1.2'
 gem 'cssbundling-rails'
 gem 'csv'
 gem 'dotiw', '~> 5.3.3'

Gemfile.lock

@@ -287,6 +287,8 @@ GEM
     public_suffix (7.0.2)
     puma (7.2.0)
       nio4r (~> 2.0)
+    puma-plugin-delayed_stop (0.1.2)
+      puma (>= 5.0, < 8)
     racc (1.8.1)
     rack (3.2.5)
     rack-protection (4.2.1)
@@ -505,6 +507,7 @@ DEPENDENCIES
   pg (~> 1.2)
   pg_search (~> 2.3)
   puma (~> 7.2)
+  puma-plugin-delayed_stop (~> 0.1.2)
   rails (~> 8.0.4)
   rspec (~> 3.10)
   rspec-rails (~> 8.0)

config/puma.rb

@@ -33,6 +33,10 @@
 # Allow puma to be restarted by `bin/rails restart` command.
 plugin :tmp_restart
 
+# Adds a drain period during shutdown so swarm can elegantly remove it from 
+# the routing mesh
+plugin :delayed_stop
+
 # Run the Solid Queue supervisor inside of Puma for single-server deployments
 plugin :solid_queue if ENV['SOLID_QUEUE_IN_PUMA']