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# frozen_string_literal: true
require 'puma/const'
require "puma/null_io"
require 'stringio'
module Puma
# The default implement of an event sink object used by Server
# for when certain kinds of events occur in the life of the server.
#
# The methods available are the events that the Server fires.
#
class Events
class DefaultFormatter
def call(str)
str
end
end
class PidFormatter
def call(str)
"[#{$$}] #{str}"
end
end
include Const
# Create an Events object that prints to +stdout+ and +stderr+.
#
def initialize(stdout, stderr)
@formatter = DefaultFormatter.new
@stdout = stdout.dup
@stderr = stderr.dup
@stdout.sync = true
@stderr.sync = true
@debug = ENV.key? 'PUMA_DEBUG'
@hooks = Hash.new { |h,k| h[k] = [] }
end
attr_reader :stdout, :stderr
attr_accessor :formatter
# Fire callbacks for the named hook
#
def fire(hook, *args)
@hooks[hook].each { |t| t.call(*args) }
end
# Register a callback for a given hook
#
def register(hook, obj=nil, &blk)
if obj and blk
raise "Specify either an object or a block, not both"
end
h = obj || blk
@hooks[hook] << h
h
end
# Write +str+ to +@stdout+
#
def log(str)
@stdout.puts format(str)
end
def write(str)
@stdout.write format(str)
end
def debug(str)
log("% #{str}") if @debug
end
# Write +str+ to +@stderr+
#
def error(str)
@stderr.puts format("ERROR: #{str}")
exit 1
end
def format(str)
formatter.call(str)
end
# An HTTP parse error has occurred.
# +server+ is the Server object, +env+ the request, and +error+ a
# parsing exception.
#
def parse_error(server, env, error)
@stderr.puts "#{Time.now}: HTTP parse error, malformed request " \
"(#{env[HTTP_X_FORWARDED_FOR] || env[REMOTE_ADDR]}#{env[REQUEST_PATH]}): " \
"#{error.inspect}" \
"\n---\n"
end
# An SSL error has occurred.
# +server+ is the Server object, +peeraddr+ peer address, +peercert+
# any peer certificate (if present), and +error+ an exception object.
#
def ssl_error(server, peeraddr, peercert, error)
subject = peercert ? peercert.subject : nil
@stderr.puts "#{Time.now}: SSL error, peer: #{peeraddr}, peer cert: #{subject}, #{error.inspect}"
end
# An unknown error has occurred.
# +server+ is the Server object, +error+ an exception object,
# +kind+ some additional info, and +env+ the request.
#
def unknown_error(server, error, kind="Unknown", env=nil)
if error.respond_to? :render
error.render "#{Time.now}: #{kind} error", @stderr
else
if env
string_block = [ "#{Time.now}: #{kind} error handling request { #{env['REQUEST_METHOD']} #{env['PATH_INFO']} }" ]
string_block << error.inspect
else
string_block = [ "#{Time.now}: #{kind} error: #{error.inspect}" ]
end
string_block << error.backtrace
@stderr.puts string_block.join("\n")
end
end
def on_booted(&block)
register(:on_booted, &block)
end
def fire_on_booted!
fire(:on_booted)
end
DEFAULT = new(STDOUT, STDERR)
# Returns an Events object which writes its status to 2 StringIO
# objects.
#
def self.strings
Events.new StringIO.new, StringIO.new
end
def self.stdio
Events.new $stdout, $stderr
end
def self.null
n = NullIO.new
Events.new n, n
end
end
end
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