[SEARCH] Added a template for Elasticsearch application initializer

The `elasticsearch_url` variable is set in the "secret/rubygems" data bag,
similar to setting PostgreSQL host, etc.

Alternatively, an environment variable `ELASTICSEARCH_URL` could be used.

Related: rubygems/rubygems.org#455

chef/site-cookbooks/rubygems/recipes/rails.rb

@@ -86,7 +86,7 @@
   notifies :restart, "service[rg_delayed_job]"
 end
 
-# logrotate for application
+# Logrotate for application
 template "/etc/logrotate.d/#{app_env}" do
   source "logrotate-application.erb"
   owner  "root"
@@ -96,7 +96,7 @@
   variables(service_name: app_env, rails_root: rails_root)
 end
 
-# logrotate for application
+# Rails initializer for secret
 template "#{node["application"]["rails_root"]}/current/config/secret.rb" do
   source "secret.rb.erb"
   owner  "deploy"
@@ -106,6 +106,16 @@
   variables(s3_key: s3_key, s3_secret: s3_secret, secret_token: secret_token, bundler_token: bundler_token, bundler_api_url: bundler_api_url, new_relic_license_key: new_relic_license_key, new_relic_app_name: new_relic_app_name)
 end
 
+# Rails initializer for Elasticsearch
+template "#{node["application"]["rails_root"]}/current/config/initializers/tire.rb" do
+  source "tire.rb.erb"
+  owner  "deploy"
+  group  "deploy"
+  mode   "0600"
+  action :create
+  variables(elasticsearch_url: rubygems_settings["elasticsearch_url"])
+end
+
 # Simplest thing that works: setup the worker; logs will be in the
 # rails_root/shared/log/rg_delayed_job
 directory "#{node['application']['rails_root']}/shared/log/rg_delayed_job" do

chef/site-cookbooks/rubygems/templates/default/tire.rb.erb

@@ -0,0 +1,3 @@
+Tire.configure do
+  url "<%= @elasticsearch_url %>"
+end