Class: TingYun::Instrumentation::Support::EventedSubscriber
- Inherits:
-
Object
- Object
- TingYun::Instrumentation::Support::EventedSubscriber
show all
- Defined in:
- lib/ting_yun/instrumentation/support/evented_subscriber.rb
Class Method Summary
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Instance Method Summary
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Constructor Details
Returns a new instance of EventedSubscriber.
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# File 'lib/ting_yun/instrumentation/support/evented_subscriber.rb', line 6
def initialize
@queue_key = ['TingYun', self.class.name, object_id].join('-')
end
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Class Method Details
.subscribe(pattern) ⇒ Object
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# File 'lib/ting_yun/instrumentation/support/evented_subscriber.rb', line 16
def self.subscribe(pattern)
unless subscribed?
ActiveSupport::Notifications.subscribe(pattern, new)
end
end
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.subscribed? ⇒ Boolean
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# File 'lib/ting_yun/instrumentation/support/evented_subscriber.rb', line 10
def self.subscribed?
ActiveSupport::Notifications.notifier.instance_variable_get(:@subscribers) \
.find{|s| s.instance_variable_get(:@delegate).class == self }
end
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Instance Method Details
#event_stack ⇒ Object
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# File 'lib/ting_yun/instrumentation/support/evented_subscriber.rb', line 54
def event_stack
Thread.current[@queue_key] ||= Hash.new {|h,id| h[id] = [] }
end
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#finish(name, id, payload) ⇒ Object
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# File 'lib/ting_yun/instrumentation/support/evented_subscriber.rb', line 28
def finish(name, id, payload)
pop_event(id)
end
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#log_notification_error(error, name, event_type) ⇒ Object
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# File 'lib/ting_yun/instrumentation/support/evented_subscriber.rb', line 32
def log_notification_error(error, name, event_type)
TingYun::Agent.logger.error("Error during #{event_type} callback for event '#{name}':")
TingYun::Agent.logger.log_exception(:error, error)
end
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#pop_event(transaction_id) ⇒ Object
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# File 'lib/ting_yun/instrumentation/support/evented_subscriber.rb', line 48
def pop_event(transaction_id)
event = event_stack[transaction_id].pop
event.end = Time.now
event
end
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#push_event(event) ⇒ Object
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# File 'lib/ting_yun/instrumentation/support/evented_subscriber.rb', line 39
def push_event(event)
parent = event_stack[event.transaction_id].last
if parent && event.respond_to?(:parent=)
event.parent = parent
parent << event
end
event_stack[event.transaction_id].push event
end
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#start(name, id, payload) ⇒ Object
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# File 'lib/ting_yun/instrumentation/support/evented_subscriber.rb', line 22
def start(name, id, payload)
event = ActiveSupport::Notifications::Event.new(name, Time.now, nil, id, payload)
push_event(event)
event
end
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