WIP - add mini profiler gem

.lando.yml

@@ -21,6 +21,9 @@ services:
   orangelight_database:
     type: postgres:13
     portforward: true
+  orangelight_redis:
+    type: redis:4.0.9
+    portforward: true
 proxy:
   orangelight_test_solr:
     - orangelight.test.solr.lndo.site:8983

Gemfile

@@ -52,6 +52,9 @@ gem 'lograge'
 gem 'logstash-event'
 gem 'mail_form'
 gem 'matrix'
+# For memory profiling
+# See https://github.com/MiniProfiler/rack-mini-profiler#memory-profiling for usage
+gem 'memory_profiler'
 # Modernizr.js library
 gem 'modernizr-rails'
 gem 'net-imap', require: false
@@ -65,7 +68,11 @@ gem 'openurl', '~> 1.0'
 # Use postgresql as the database for Active Record
 gem 'pg'
 gem 'puma', '~> 6.0'
+# For profiling
+gem 'rack-mini-profiler'
 gem 'rake'
+# Needed for 
+gem 'redis'
 # Interact with Solr
 gem 'rsolr'
 # Should this be in the test, development group?
@@ -76,6 +83,8 @@ gem 'sass-rails', '~> 6.0'
 gem 'simple_form'
 gem 'sneakers'
 gem 'sprockets-es6'
+# For call-stack profiling flamegraphs
+gem 'stackprof'
 gem 'stringex', git: 'https://github.com/pulibrary/stringex.git', tag: 'vpton.2.5.2.2'
 gem 'string_rtl'
 gem 'terser', '~> 1.1'

Gemfile.lock

@@ -194,6 +194,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     concurrent-ruby (1.2.2)
+    connection_pool (2.4.1)
     coveralls_reborn (0.25.0)
       simplecov (>= 0.18.1, < 0.22.0)
       term-ansicolor (~> 1.6)
@@ -339,6 +340,7 @@ GEM
       marc (~> 1.0)
     marcel (1.0.2)
     matrix (0.4.2)
+    memory_profiler (1.0.1)
     method_source (1.0.0)
     mini_mime (1.1.2)
     mini_portile2 (2.8.1)
@@ -400,6 +402,8 @@ GEM
       nio4r (~> 2.0)
     racc (1.6.2)
     rack (2.2.6.4)
+    rack-mini-profiler (3.1.0)
+      rack (>= 1.2.0)
     rack-proxy (0.7.4)
       rack
     rack-test (2.1.0)
@@ -437,6 +441,10 @@ GEM
     rainbow (3.1.1)
     rake (13.0.6)
     rbtree (0.4.6)
+    redis (5.0.6)
+      redis-client (>= 0.9.0)
+    redis-client (0.14.1)
+      connection_pool
     regexp_parser (2.6.1)
     request_store (1.5.1)
       rack (>= 1.4)
@@ -557,6 +565,7 @@ GEM
     sshkit (1.21.3)
       net-scp (>= 1.1.2)
       net-ssh (>= 2.8.0)
+    stackprof (0.2.25)
     string_rtl (0.1.0)
     sync (0.5.0)
     term-ansicolor (1.7.1)
@@ -686,6 +695,7 @@ DEPENDENCIES
   logstash-event
   mail_form
   matrix
+  memory_profiler
   modernizr-rails
   net-imap
   net-ldap
@@ -697,9 +707,11 @@ DEPENDENCIES
   pg
   pry-byebug
   puma (~> 6.0)
+  rack-mini-profiler
   rails (~> 6.1, >= 6.1.7.1)
   rails-controller-testing
   rake
+  redis
   rsolr
   rspec-rails
   rspec_junit_formatter
@@ -709,6 +721,7 @@ DEPENDENCIES
   sneakers
   solargraph
   sprockets-es6
+  stackprof
   string_rtl
   stringex!
   terser (~> 1.1)

app/controllers/application_controller.rb

@@ -65,4 +65,10 @@ def verify_admin!
       authenticate_user!
       head :forbidden unless current_user.admin?
     end
+
+    before_action do
+      if (current_user && current_user.admin?)
+        Rack::MiniProfiler.authorize_request
+      end
+    end
 end

config/initializers/mini_profiler.rb

@@ -0,0 +1,4 @@
+# frozen_string_literal: true
+
+Rack::MiniProfiler.config.storage_options = { host: '127.0.0.1', port: '55212' }
+Rack::MiniProfiler.config.storage = Rack::MiniProfiler::RedisStore