85 lines
3.4 KiB
Ruby
85 lines
3.4 KiB
Ruby
# frozen_string_literal: true
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# This configuration file will be evaluated by Puma. The top-level methods that
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# are invoked here are part of Puma's configuration DSL. For more information
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# about methods provided by the DSL, see https://puma.io/puma/Puma/DSL.html.
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# Puma can serve each request in a thread from an internal thread pool.
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# The `threads` method setting takes two numbers: a minimum and maximum.
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# Any libraries that use thread pools should be configured to match
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# the maximum value specified for Puma. Default is set to 5 threads for minimum
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# and maximum; this matches the default thread size of Active Record.
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max_threads_count = ENV.fetch('RAILS_MAX_THREADS', 5)
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min_threads_count = ENV.fetch('RAILS_MIN_THREADS', max_threads_count)
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threads min_threads_count, max_threads_count
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# Specifies that the worker count should equal the number of processors in production.
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if %w[production staging].include? ENV['RAILS_ENV']
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require 'concurrent-ruby'
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worker_count = Integer(ENV.fetch('WEB_CONCURRENCY') { Concurrent.physical_processor_count })
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workers worker_count if worker_count > 1
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end
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# Specifies the `worker_timeout` threshold that Puma will use to wait before
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# terminating a worker in development environments.
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worker_timeout 3600 if ENV.fetch('RAILS_ENV', 'development') == 'development'
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# Specifies the `port` that Puma will listen on to receive requests; default is 7000.
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port ENV.fetch('PORT', 7000)
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# Specifies the `environment` that Puma will run in.
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environment ENV.fetch('RAILS_ENV', 'development')
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# Specifies the `pidfile` that Puma will use.
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pidfile ENV.fetch('PIDFILE', 'tmp/pids/server.pid')
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# Allow puma to be restarted by `bin/rails restart` command.
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plugin :tmp_restart
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##########################
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##### CUSTOM OPTIONS #####
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##########################
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# Specifies the `state_path` that Pumactl will use.
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state_path 'tmp/pids/puma.state'
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# Activate control app for Pumactl.
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activate_control_app 'unix://tmp/sockets/pumactl.sock'
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# Only bind to systemd activated sockets, ignoring other binds.
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# If no systemd activated sockets are given, regular binds apply.
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bind_to_activated_sockets 'only'
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# Refresh Gemfile during phased-restarts.
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prune_bundler
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# Fork all workers from worker 0 to reduce memory footprint and allow phased restarts.
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# For successful phased restarts, we need at least 3 workers (see doc).
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# See https://github.com/puma/puma/blob/master/docs/fork_worker.md.
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# Passing `0` will disable automatic reforking, which currently breaks with SdNotify.
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# See https://github.com/puma/puma/issues/3273.
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fork_worker 0
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# Disable explicit preloading of our app.
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# With `fork_worker`, we will have an implicit preloading.
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preload_app! false
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# Disable automatic tagging of the service.
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tag ''
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# Specifies the output redirection that Puma will use.
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# Params: stdout, stderr, append?
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stdout_redirect 'log/puma_access.log', 'log/puma_error.log', true if %w[production staging].include? ENV['RAILS_ENV']
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# Before performing a hot restart (not on phased restarts), send another watchdog message
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# TODO: Consider `on_booted` as well, which currently breaks with Pumactl.
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on_restart do
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require 'puma/sd_notify'
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Puma::SdNotify.watchdog
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end
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# Note on Phased Restarts:
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# - Phased Restarts are only supported in cluster mode with multiple workers (i.e., not in development).
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# - The Puma binary won't be upgraded on phased restarts, but since we have the unattended-upgrades, this is not a major issue.
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# - See https://github.com/casperisfine/puma/blob/master/docs/restart.md.
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