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# frozen_string_literal: true
require 'puma/runner'
require 'puma/detect'
require 'puma/plugin'
module Puma
# This class is instantiated by the `Puma::Launcher` and used
# to boot and serve a Ruby application when no puma "workers" are needed
# i.e. only using "threaded" mode. For example `$ puma -t 1:5`
#
# At the core of this class is running an instance of `Puma::Server` which
# gets created via the `start_server` method from the `Puma::Runner` class
# that this inherits from.
class Single < Runner
def stats
b = @server.backlog || 0
r = @server.running || 0
t = @server.pool_capacity || 0
m = @server.max_threads || 0
%Q!{ "started_at": "#{@started_at.utc.iso8601}", "backlog": #{b}, "running": #{r}, "pool_capacity": #{t}, "max_threads": #{m} }!
end
def restart
@server.begin_restart
end
def stop
@server.stop(false) if @server
end
def halt
@server.halt
end
def stop_blocked
log "- Gracefully stopping, waiting for requests to finish"
@control.stop(true) if @control
@server.stop(true) if @server
end
def jruby_daemon?
daemon? and Puma.jruby?
end
def jruby_daemon_start
require 'puma/jruby_restart'
JRubyRestart.daemon_start(@restart_dir, @launcher.restart_args)
end
def run
already_daemon = false
if jruby_daemon?
require 'puma/jruby_restart'
if JRubyRestart.daemon?
# load and bind before redirecting IO so errors show up on stdout/stderr
load_and_bind
redirect_io
end
already_daemon = JRubyRestart.daemon_init
end
output_header "single"
if jruby_daemon?
if already_daemon
JRubyRestart.perm_daemonize
else
pid = nil
Signal.trap "SIGUSR2" do
log "* Started new process #{pid} as daemon..."
# Must use exit! so we don't unwind and run the ensures
# that will be run by the new child (such as deleting the
# pidfile)
exit!(true)
end
Signal.trap "SIGCHLD" do
log "! Error starting new process as daemon, exiting"
exit 1
end
jruby_daemon_start
sleep
end
else
if daemon?
log "* Daemonizing..."
Process.daemon(true)
redirect_io
end
load_and_bind
end
Plugins.fire_background
@launcher.write_state
start_control
@server = server = start_server
unless daemon?
log "Use Ctrl-C to stop"
redirect_io
end
@launcher.events.fire_on_booted!
begin
server.run.join
rescue Interrupt
# Swallow it
end
end
end
end
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