Set SOLID_QUEUE_IN_PUMA if present

lib/generators/dockerfile_generator.rb

@@ -336,7 +336,7 @@ def generate_app
         force: File.exist?("fly.toml")
     end
 
-    if using_solidq? && deploy_database == "sqlite3" && File.exist?("config/puma.rb")
+    if solidq_launcher == :puma && !File.read("config/puma.rb").include?(":solid_queue")
       append_to_file "config/puma.rb", "\n# Run the Solid Queue's supervisor\nplugin :solid_queue\n"
     end
 
@@ -431,6 +431,10 @@ def generate_app
           env["HTTP_PORT"] = "8080"
         end
 
+        if solidq_launcher == :env && !dockerfile.include?("SOLID_QUEUE_IN_PUMA")
+          env["SOLID_QUEUE_IN_PUMA"] = "true"
+        end
+
         unless env.empty?
           toml = IO.read("fly.toml")
           if !toml.include?("[[env]]")
@@ -550,6 +554,22 @@ def using_solidq?
     @gemfile.include?("solid_queue") and includes_jobs?
   end
 
+  def solidq_launcher
+    if !using_solidq?
+      :none
+    elsif deploy_database != "sqlite3"
+      :process
+    elsif File.exist? "config/puma.rb"
+      if File.read("config/puma.rb").include?("SOLID_QUEUE_IN_PUMA")
+        File.exist?("fly.toml") ? :env : :none
+      else
+        :puma
+      end
+    else
+      :procfile
+    end
+  end
+
   def parallel?
     (using_node? || using_bun?) && options.parallel
   end
@@ -990,6 +1010,10 @@ def deploy_env
       env.merge! @@args["deploy"].to_h { |key, value| [key, "$#{key}"] }
     end
 
+    if solidq_launcher == :env
+      env["SOLID_QUEUE_IN_PUMA"] = "true"
+    end
+
     env.merge! @@vars["deploy"] if @@vars["deploy"]
 
     env.map { |key, value| "#{key}=#{value.inspect}" }.sort
@@ -1216,23 +1240,29 @@ def dbprep_command
 
   def procfile
     if using_passenger?
-      {
+      base = {
         nginx: "nginx"
       }
     elsif options.nginx?
-      {
+      base = {
         nginx: '/usr/sbin/nginx -g "daemon off;"',
         rails: "./bin/rails server -p 3001"
       }
     elsif using_thruster?
-      {
+      base = {
         rails: "bundle exec thrust ./bin/rails server"
       }
     else
-      {
+      base = {
         rails: "./bin/rails server"
       }
     end
+
+    if solidq_launcher == :procfile
+      base["solidq"] = "bundle exec rake solid_queue:start"
+    end
+
+    base
   end
 
   def using_thruster?

test/results/solid_queue_sqlite3/Dockerfile

@@ -61,7 +61,8 @@ RUN groupadd --system --gid 1000 rails && \
 USER 1000:1000
 
 # Deployment options
-ENV DATABASE_URL="sqlite3:///data/production.sqlite3"
+ENV DATABASE_URL="sqlite3:///data/production.sqlite3" \
+    SOLID_QUEUE_IN_PUMA="true"
 
 # Entrypoint prepares the database.
 ENTRYPOINT ["/rails/bin/docker-entrypoint"]

test/results/solid_queue_sqlite3/puma.rb

@@ -39,6 +39,3 @@
 # Specify the PID file. Defaults to tmp/pids/server.pid in development.
 # In other environments, only set the PID file if requested.
 pidfile ENV["PIDFILE"] if ENV["PIDFILE"]
-
-# Run the Solid Queue's supervisor
-plugin :solid_queue