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Versions: 13
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Contents
module Rpush
module Daemon
class SignalHandler
extend Loggable
class << self
attr_reader :thread
end
def self.start
return unless trap_signals?
read_io, @write_io = IO.pipe
start_handler(read_io)
%w(INT TERM HUP USR2).each do |signal|
Signal.trap(signal) { @write_io.puts(signal) }
end
end
def self.stop
@write_io.puts('break') if @write_io
@thread.join if @thread
rescue StandardError => e
log_error(e)
reflect(:error, e)
ensure
@thread = nil
end
def self.start_handler(read_io)
@thread = Thread.new do
while readable_io = IO.select([read_io]) # rubocop:disable Lint/AssignmentInCondition
signal = readable_io.first[0].gets.strip
begin
case signal
when 'HUP'
handle_hup
when 'USR2'
handle_usr2
when 'INT', 'TERM'
Thread.new { Rpush::Daemon.shutdown }
break
when 'break'
break
else
Rpush.logger.error("Unhandled signal: #{signal}")
end
rescue StandardError => e
Rpush.logger.error("Error raised when handling signal '#{signal}'")
Rpush.logger.error(e)
end
end
end
end
def self.handle_hup
Rpush.logger.reopen
Rpush.logger.info('Received HUP signal.')
Rpush::Daemon.store.reopen_log
Synchronizer.sync
Feeder.wakeup
end
def self.handle_usr2
Rpush.logger.info('Received USR2 signal.')
AppRunner.debug
end
def self.trap_signals?
!Rpush.config.embedded
end
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems