module Fluent::PluginHelper::EventLoop
Constants
- EVENT_LOOP_RUN_DEFAULT_TIMEOUT
stop : [-] shutdown : detach all event watchers on event loop close : stop event loop terminate: initialize internal state
Attributes
_event_loop[R]
Public Class Methods
new()
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Calls superclass method
Fluent::PluginHelper::Thread.new
# File lib/fluent/plugin_helper/event_loop.rb, line 54 def initialize super @_event_loop = Coolio::Loop.new @_event_loop_running = false @_event_loop_mutex = Mutex.new # plugin MAY configure loop run timeout in #configure @_event_loop_run_timeout = EVENT_LOOP_RUN_DEFAULT_TIMEOUT end
Public Instance Methods
close()
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Calls superclass method
Fluent::PluginHelper::Thread#close
# File lib/fluent/plugin_helper/event_loop.rb, line 87 def close if @_event_loop_running begin @_event_loop.stop # we cannot check loop is running or not rescue RuntimeError => e raise unless e.message == 'loop not running' end end super end
event_loop_attach(watcher)
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# File lib/fluent/plugin_helper/event_loop.rb, line 36 def event_loop_attach(watcher) @_event_loop_mutex.synchronize do @_event_loop.attach(watcher) end end
event_loop_running?()
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# File lib/fluent/plugin_helper/event_loop.rb, line 50 def event_loop_running? @_event_loop_running end
event_loop_wait_until_start()
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# File lib/fluent/plugin_helper/event_loop.rb, line 42 def event_loop_wait_until_start sleep(0.1) until event_loop_running? end
event_loop_wait_until_stop()
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# File lib/fluent/plugin_helper/event_loop.rb, line 46 def event_loop_wait_until_stop sleep(0.1) while event_loop_running? end
shutdown()
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Calls superclass method
# File lib/fluent/plugin_helper/event_loop.rb, line 76 def shutdown @_event_loop_mutex.synchronize do @_event_loop.watchers.each {|w| w.detach if w.attached? } end while @_event_loop_running sleep 0.1 end super end
start()
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Calls superclass method
# File lib/fluent/plugin_helper/event_loop.rb, line 63 def start super # event loop does not run here, so mutex lock is not required thread_create :event_loop do default_watcher = DefaultWatcher.new @_event_loop.attach(default_watcher) @_event_loop_running = true @_event_loop.run(@_event_loop_run_timeout) # this method blocks @_event_loop_running = false end end
terminate()
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Calls superclass method
Fluent::PluginHelper::Thread#terminate
# File lib/fluent/plugin_helper/event_loop.rb, line 99 def terminate @_event_loop = nil @_event_loop_running = false @_event_loop_mutex = nil @_event_loop_run_timeout = nil super end