Class: Rx::ScheduledObserver
Instance Method Summary
collapse
#dispose, #fail, #on_completed, #on_error, #on_next
Methods included from Observer
allow_reentrancy, #as_observer, #checked, configure, create, from_notifier, #notify_on, prevent_reentrancy, #to_notifier
Constructor Details
#initialize(scheduler, observer) ⇒ ScheduledObserver
Returns a new instance of ScheduledObserver.
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# File 'lib/rx/core/scheduled_observer.rb', line 11
def initialize(scheduler, observer)
@scheduler = scheduler
@observer = observer
@gate = Monitor.new
@queue = []
@subscriber = SerialSubscription.new
@acquired = false
@faulted = false
config = ObserverConfiguration.new
config.on_next(&method(:on_next_core))
config.on_error(&method(:on_error_core))
config.on_completed(&method(:on_completed_core))
super(config)
end
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Instance Method Details
#ensure_active(n = 0) ⇒ Object
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# File 'lib/rx/core/scheduled_observer.rb', line 40
def ensure_active(n=0)
owner = false
@gate.synchronize do
if !@faulted && @queue.length > 0
owner = !@acquired
@acquired = true
end
end
@subscriber.subscription = @scheduler.schedule_recursive_with_state(nil, method(:run)) if owner
end
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#on_completed_core ⇒ Object
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# File 'lib/rx/core/scheduled_observer.rb', line 36
def on_completed_core
@gate.synchronize { @queue.push(lambda { @observer.on_completed }) }
end
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#on_error_core(error) ⇒ Object
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# File 'lib/rx/core/scheduled_observer.rb', line 32
def on_error_core(error)
@gate.synchronize { @queue.push(lambda { @observer.on_error error }) }
end
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#on_next_core(value) ⇒ Object
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# File 'lib/rx/core/scheduled_observer.rb', line 28
def on_next_core(value)
@gate.synchronize { @queue.push(lambda { @observer.on_next value }) }
end
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#run(state, recurse) ⇒ Object
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# File 'lib/rx/core/scheduled_observer.rb', line 53
def run(state, recurse)
work = nil
@gate.synchronize do
if @queue.length > 0
work = @queue.shift
else
@acquired = false
return
end
end
begin
work.call
rescue => e
@queue = []
@faulted = true
raise e
end
recurse.call state
end
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#unsubscribe ⇒ Object
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# File 'lib/rx/core/scheduled_observer.rb', line 76
def unsubscribe
super
@subscriber.unsubscribe
end
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