Support using puma if configured via USE_PUMA=true (multithreading)

Gemfile

@@ -171,6 +171,8 @@ gem 'sprockets', '~> 3.7.0'
 # also, better than thin since we can control worker concurrency.
 gem 'unicorn'
 
+gem 'puma', '~> 4.0.0' # used for development and optionally for production
+
 gem 'nokogiri', '~> 1.10.3'
 
 gem 'carrierwave', '~> 1.3.1'
@@ -256,7 +258,6 @@ group :development do
 end
 
 group :development, :test do
-  gem 'puma', '~> 3.12.0'
   gem 'thin', '~> 1.7.2'
 
   # Tracing and profiling gems

Gemfile.lock

@@ -649,7 +649,8 @@ GEM
       binding_of_caller (>= 0.7)
       pry (>= 0.9.11)
     public_suffix (3.0.3)
-    puma (3.12.0)
+    puma (4.0.0)
+      nio4r (~> 2.0)
     rabl (0.14.0)
       activesupport (>= 2.3.14)
     rack (2.0.6)
@@ -997,7 +998,7 @@ DEPENDENCIES
   pry-rails (~> 0.3.6)
   pry-rescue (~> 1.5.0)
   pry-stack_explorer (~> 0.4.9.2)
-  puma (~> 3.12.0)
+  puma (~> 4.0.0)
   rabl (~> 0.14.0)
   rack-attack (~> 5.4.2)
   rack-mini-profiler

Procfile

@@ -1,4 +1,4 @@
-web: bundle exec unicorn --config-file config/unicorn.rb --host ${HOST:="127.0.0.1"} --port ${PORT:="8080"} --env ${RAILS_ENV:="development"}
+web: ./packaging/scripts/web
 worker: bundle exec rake jobs:work
 backup: ./packaging/scripts/backup
 check: ./packaging/scripts/check

config/environments/production.rb

@@ -127,4 +127,14 @@ OpenProject::Application.configure do
 
 
   config.active_record.dump_schema_after_migration = false
+
+  if OpenProject::Configuration.enable_internal_assets_server?
+    config.public_file_server.enabled = true
+    config.public_file_server.headers = {
+      'Access-Control-Allow-Origin' => '*',
+      'Access-Control-Allow-Methods' => 'GET, OPTIONS, HEAD',
+      'Cache-Control' => 'public, s-maxage=31536000, max-age=15552000',
+      'Expires' => "#{1.year.from_now.to_formatted_s(:rfc822)}"
+    }
+  end
 end

config/puma.rb

@@ -3,8 +3,9 @@
 # Any libraries that use thread pools should be configured to match
 # the maximum value specified for Puma.
 #
-threads_count = ENV.fetch("RAILS_MAX_THREADS") { 16 }
+threads_min_count = ENV.fetch("RAILS_MIN_THREADS") { 4 }
-threads 0, threads_count
+threads_max_count = ENV.fetch("RAILS_MAX_THREADS") { 16 }
+threads threads_min_count, threads_max_count
 
 # Specifies the `port` that Puma will listen on to receive requests; default is 3000.
 #
@@ -30,4 +31,4 @@ workers ENV.fetch("WEB_CONCURRENCY") { 1 }
 preload_app! if ENV["RAILS_ENV"] == 'production'
 
 # Allow puma to be restarted by `rails restart` command.
-plugin :tmp_restart
+plugin :tmp_restart unless ENV["RAILS_ENV"] == 'production'

docker/web

@@ -8,15 +8,30 @@ MIN_INSTANCES="${PASSENGER_MIN_INSTANCES:=1}"
 MAX_INSTANCES="${PASSENGER_MAX_INSTANCES:=3}"
 SPAWN_METHOD="${PASSENGER_SPAWN_METHOD:=smart}"
 
+USE_PUMA="${USE_PUMA:="false"}"
+
+if [ "$RAILS_ENV" = "production" ] && [ "$USE_PUMA" = "true" ]; then
+	# @TODO Add apache config to serve the assets. Until then we have Puma serve
+	#       them which is slower. This is ok if an asset host is used (SaaS).
+	#       But for self-hosted installations we may want to fix that.
+	#       Passenger does include a config to have nginx serve the assets.
+	export OPENPROJECT_ENABLE__INTERNAL__ASSETS__SERVER=true
+fi
+
 if [ "$MIGRATE" = "true" ]; then
 	echo "Migrating database..."
 	bundle exec rake db:migrate
 fi
 
-exec bundle exec passenger start \
+if [ "$USE_PUMA" ]; then
+	# see `config/puma.rb` for configuration
+	bundle exec rails server puma -b $BIND -p $PORT
+else
+	exec bundle exec passenger start \
 		-p $PORT \
 		-a "${BIND}" \
 		--min-instances "$MIN_INSTANCES" \
 		--max-pool-size "$MAX_INSTANCES" \
 		--spawn-method "$SPAWN_METHOD" \
 		--max-preloader-idle-time 0
+fi

lib/open_project/configuration.rb

@@ -68,6 +68,8 @@ module OpenProject
       'rails_relative_url_root' => '',
       'rails_force_ssl' => false,
       'rails_asset_host' => nil,
+      # Enable internal asset server
+      'enable_internal_assets_server' => false,
 
       # Additional / overridden help links
       'force_help_link'         => nil,

packaging/scripts/web

@@ -0,0 +1,21 @@
+#!/bin/bash -e
+
+HOST="${HOST:=127.0.0.1}"
+PORT="${PORT:=8080}"
+RAILS_ENV="${RAILS_ENV:="development"}"
+
+USE_PUMA="${USE_PUMA:="false"}"
+
+if [ "$RAILS_ENV" = "production" ] && [ "$USE_PUMA" = "true" ]; then
+	# @TODO Add apache config to serve the assets. Until then we have Puma serve
+	#       them which is slower. This is ok if an asset host is used (SaaS).
+	#       But for self-hosted installations we may want to fix that.
+	#       Passenger does include a config to have nginx serve the assets.
+	export OPENPROJECT_ENABLE__INTERNAL__ASSETS__SERVER=true
+fi
+
+if [ "$USE_PUMA" = "true" ]; then
+  bundle exec rails server puma -b $HOST -p $PORT
+else
+  bundle exec unicorn --config-file config/unicorn.rb --host $HOST --port $PORT --env $RAILS_ENV
+fi