2015-03-13 20:10:39 -04:00
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module Puma
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# The methods that are available for use inside the config file.
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#
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class DSL
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def self.load(options, path)
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new(options).tap do |obj|
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obj._load_from(path)
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end
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options
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end
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def initialize(options)
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@options = options
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end
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def _load_from(path)
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instance_eval(File.read(path), path, 1) if path
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end
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# Use +obj+ or +block+ as the Rack app. This allows a config file to
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# be the app itself.
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#
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def app(obj=nil, &block)
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obj ||= block
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raise "Provide either a #call'able or a block" unless obj
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@options[:app] = obj
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end
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# Start the Puma control rack app on +url+. This app can be communicated
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# with to control the main server.
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#
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def activate_control_app(url="auto", opts=nil)
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@options[:control_url] = url
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if opts
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2015-03-13 20:18:15 -04:00
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auth_token = opts[:auth_token]
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@options[:control_auth_token] = auth_token if auth_token
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2015-03-13 20:10:39 -04:00
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2015-03-13 20:18:15 -04:00
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@options[:control_auth_token] = :none if opts[:no_token]
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2015-03-13 20:10:39 -04:00
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end
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end
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# Bind the server to +url+. tcp:// and unix:// are the only accepted
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# protocols.
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#
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def bind(url)
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@options[:binds] << url
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end
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# Define the TCP port to bind to. Use +bind+ for more advanced options.
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#
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def port(port)
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@options[:binds] << "tcp://#{Configuration::DefaultTCPHost}:#{port}"
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end
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# Work around leaky apps that leave garbage in Thread locals
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# across requests
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#
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def clean_thread_locals(which=true)
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@options[:clean_thread_locals] = which
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end
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# Daemonize the server into the background. Highly suggest that
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# this be combined with +pidfile+ and +stdout_redirect+.
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def daemonize(which=true)
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@options[:daemon] = which
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end
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# When shutting down, drain the accept socket of pending
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# connections and proces them. This loops over the accept
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# socket until there are no more read events and then stops
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# looking and waits for the requests to finish.
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def drain_on_shutdown(which=true)
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@options[:drain_on_shutdown] = which
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end
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# Set the environment in which the Rack's app will run.
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def environment(environment)
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@options[:environment] = environment
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end
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# Code to run before doing a restart. This code should
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# close logfiles, database connections, etc.
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#
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# This can be called multiple times to add code each time.
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#
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def on_restart(&block)
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@options[:on_restart] << block
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end
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# Command to use to restart puma. This should be just how to
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# load puma itself (ie. 'ruby -Ilib bin/puma'), not the arguments
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# to puma, as those are the same as the original process.
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#
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def restart_command(cmd)
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@options[:restart_cmd] = cmd
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end
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# Store the pid of the server in the file at +path+.
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def pidfile(path)
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@options[:pidfile] = path
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end
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# Disable request logging.
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#
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def quiet
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@options[:quiet] = true
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end
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# Load +path+ as a rackup file.
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#
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def rackup(path)
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@options[:rackup] = path.to_s
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end
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# Redirect STDOUT and STDERR to files specified.
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def stdout_redirect(stdout=nil, stderr=nil, append=false)
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@options[:redirect_stdout] = stdout
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@options[:redirect_stderr] = stderr
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@options[:redirect_append] = append
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end
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# Configure +min+ to be the minimum number of threads to use to answer
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# requests and +max+ the maximum.
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#
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def threads(min, max)
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min = Integer(min)
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max = Integer(max)
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if min > max
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raise "The minimum (#{min}) number of threads must be less than the max (#{max})"
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end
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@options[:min_threads] = min
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@options[:max_threads] = max
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end
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def ssl_bind(host, port, opts)
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@options[:binds] << "ssl://#{host}:#{port}?cert=#{opts[:cert]}&key=#{opts[:key]}"
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2015-03-13 20:10:39 -04:00
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end
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# Use +path+ as the file to store the server info state. This is
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# used by pumactl to query and control the server.
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#
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def state_path(path)
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@options[:state] = path.to_s
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end
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# *Cluster mode only* How many worker processes to run.
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#
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def workers(count)
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@options[:workers] = count.to_i
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end
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# *Cluster mode only* Code to run immediately before a worker shuts
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# down (after it has finished processing HTTP requests). These hooks
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# can block if necessary to wait for background operations unknown
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# to puma to finish before the process terminates.
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#
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# This can be called multiple times to add hooks.
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#
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def on_worker_shutdown(&block)
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@options[:before_worker_shutdown] << block
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end
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# *Cluster mode only* Code to run when a worker boots to setup
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# the process before booting the app.
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#
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# This can be called multiple times to add hooks.
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#
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def on_worker_boot(&block)
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@options[:before_worker_boot] << block
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end
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# *Cluster mode only* Code to run when a master process is
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# about to create the worker by forking itself.
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#
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# This can be called multiple times to add hooks.
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#
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def on_worker_fork(&block)
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@options[:before_worker_fork] << block
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end
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# *Cluster mode only* Code to run when a worker boots to setup
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# the process after booting the app.
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#
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# This can be called multiple times to add hooks.
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#
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def after_worker_boot(&block)
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@options[:after_worker_boot] << block
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end
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# The directory to operate out of.
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def directory(dir)
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@options[:directory] = dir.to_s
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@options[:worker_directory] = dir.to_s
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end
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# Run the app as a raw TCP app instead of an HTTP rack app
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def tcp_mode
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@options[:mode] = :tcp
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end
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# *Cluster mode only* Preload the application before starting
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# the workers and setting up the listen ports. This conflicts
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# with using the phased restart feature, you can't use both.
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#
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def preload_app!(answer=true)
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@options[:preload_app] = answer
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end
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# Use +obj+ or +block+ as the low level error handler. This allows a config file to
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# change the default error on the server.
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#
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def lowlevel_error_handler(obj=nil, &block)
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obj ||= block
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raise "Provide either a #call'able or a block" unless obj
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@options[:lowlevel_error_handler] = obj
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end
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# This option is used to allow your app and its gems to be
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# properly reloaded when not using preload.
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#
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# When set, if puma detects that it's been invoked in the
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# context of Bundler, it will cleanup the environment and
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# re-run itself outside the Bundler environment, but directly
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# using the files that Bundler has setup.
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#
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# This means that puma is now decoupled from your Bundler
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# context and when each worker loads, it will be loading a
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# new Bundler context and thus can float around as the release
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# dictates.
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def prune_bundler(answer=true)
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@options[:prune_bundler] = answer
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end
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# Additional text to display in process listing
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def tag(string)
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@options[:tag] = string
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end
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# *Cluster mode only* Set the timeout for workers
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def worker_timeout(timeout)
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@options[:worker_timeout] = timeout
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end
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# *Cluster mode only* Set the timeout for worker shutdown
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def worker_shutdown_timeout(timeout)
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@options[:worker_shutdown_timeout] = timeout
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end
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# When set to true (the default), workers accept all requests
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# and queue them before passing them to the handlers.
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# When set to false, each worker process accepts exactly as
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# many requests as it is configured to simultaneously handle.
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#
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# Queueing requests generally improves performance. In some
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# cases, such as a single threaded application, it may be
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# better to ensure requests get balanced across workers.
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#
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# Note that setting this to false disables HTTP keepalive and
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# slow clients will occupy a handler thread while the request
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# is being sent. A reverse proxy, such as nginx, can handle
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# slow clients and queue requests before they reach puma.
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def queue_requests(answer=true)
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@options[:queue_requests] = answer
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end
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2015-04-11 01:52:38 -04:00
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# When a shutdown is requested, the backtraces of all the
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# threads will be written to $stdout. This can help figure
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# out why shutdown is hanging.
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def shutdown_debug(val=true)
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@options[:shutdown_debug] = val
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end
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2015-03-13 20:10:39 -04:00
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end
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end
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