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Versions: 11
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Contents
# frozen_string_literal: true
module Puma
# Puma::Launcher uses StateFile to write a yaml file for use with Puma::ControlCLI.
#
# In previous versions of Puma, YAML was used to read/write the state file.
# Since Puma is similar to Bundler/RubyGems in that it may load before one's app
# does, minimizing the dependencies that may be shared with the app is desired.
#
# At present, it only works with numeric and string values. It is still a valid
# yaml file, and the CI tests parse it with Psych.
#
class StateFile
ALLOWED_FIELDS = %w!control_url control_auth_token pid running_from!
# @deprecated 6.0.0
FIELDS = ALLOWED_FIELDS
def initialize
@options = {}
end
def save(path, permission = nil)
contents = "---\n".dup
@options.each do |k,v|
next unless ALLOWED_FIELDS.include? k
case v
when Numeric
contents << "#{k}: #{v}\n"
when String
next if v.strip.empty?
contents << (k == 'running_from' || v.to_s.include?(' ') ?
"#{k}: \"#{v}\"\n" : "#{k}: #{v}\n")
end
end
if permission
File.write path, contents, mode: 'wb:UTF-8'
else
File.write path, contents, mode: 'wb:UTF-8', perm: permission
end
end
def load(path)
File.read(path).lines.each do |line|
next if line.start_with? '#'
k,v = line.split ':', 2
next unless v && ALLOWED_FIELDS.include?(k)
v = v.strip
@options[k] =
case v
when '' then nil
when /\A\d+\z/ then v.to_i
when /\A\d+\.\d+\z/ then v.to_f
else v.gsub(/\A"|"\z/, '')
end
end
end
ALLOWED_FIELDS.each do |f|
define_method f do
@options[f]
end
define_method "#{f}=" do |v|
@options[f] = v
end
end
end
end
Version data entries
11 entries across 11 versions & 2 rubygems