config: added a puma config file

This config file is meant to be used either for development purposes, or
production environments (e.g. inside of a Docker container).

Signed-off-by: Miquel Sabaté Solà <[email protected]>

config/puma.rb

@@ -0,0 +1,33 @@
+#!/usr/bin/env puma
+
+# Workers and connections.
+threads 1, (ENV["PORTUS_PUMA_MAX_THREADS"] || 1)
+workers (ENV["PORTUS_PUMA_WORKERS"] || 1)
+
+# If specified, use the given host:port. Otherwise, we will use a local
+# deployment through a UNIX socket.
+if ENV["PORTUS_PUMA_HOST"]
+  bind "tcp://#{ENV["PORTUS_PUMA_HOST"]}"
+else
+  bind "unix://#{File.join(Dir.pwd, "tmp/sockets/puma.sock")}"
+end
+
+# Daemon config. It will save the pid to tmp/pids/puma.pid. All the output
+# from both stdout and stderr will be redirected to logs/puma.log.
+#
+# You should not set this when running in a Docker container.
+if ENV["PORTUS_PUMA_DAEMONIZE"] == "yes"
+  log_file = File.join(Dir.pwd, "log/puma.log")
+  stdout_redirect log_file, log_file, true
+  pidfile File.join(Dir.pwd, "tmp/pids/puma.pid")
+  daemonize
+end
+
+# Copy on write.
+preload_app!
+
+on_worker_boot do
+  ActiveSupport.on_load(:active_record) do
+    ActiveRecord::Base.establish_connection
+  end
+end