Class: APMInsight::Agent::SequenceBook

Inherits:
Object
  • Object
show all
Defined in:
lib/agent/handler/sequence_book.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ SequenceBook

Returns a new instance of SequenceBook.



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# File 'lib/agent/handler/sequence_book.rb', line 8

def initialize
  @rootTracker = createDummyTracker()
  @closedTracker = @rootTracker
  @openTracker = nil
  
  @trackerCount = 0
  @closedTrackerCount = 0
  @listenFlag = -1
#        @exceptionBag = Array.new
end

Instance Attribute Details

#closedTracker ⇒ Object (readonly)

Returns the value of attribute closedTracker.



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# File 'lib/agent/handler/sequence_book.rb', line 6

def closedTracker
  @closedTracker
end

#closedTrackerCount ⇒ Object (readonly)

Returns the value of attribute closedTrackerCount.



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# File 'lib/agent/handler/sequence_book.rb', line 6

def closedTrackerCount
  @closedTrackerCount
end

#exceptionBag ⇒ Object (readonly)

Returns the value of attribute exceptionBag.



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# File 'lib/agent/handler/sequence_book.rb', line 6

def exceptionBag
  @exceptionBag
end

#listenFlag ⇒ Object (readonly)

Returns the value of attribute listenFlag.



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# File 'lib/agent/handler/sequence_book.rb', line 6

def listenFlag
  @listenFlag
end

#openTracker ⇒ Object (readonly)

Returns the value of attribute openTracker.



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# File 'lib/agent/handler/sequence_book.rb', line 6

def openTracker
  @openTracker
end

#rootTracker ⇒ Object (readonly)

Returns the value of attribute rootTracker.



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# File 'lib/agent/handler/sequence_book.rb', line 6

def rootTracker
  @rootTracker
end

#trackerCount ⇒ Object (readonly)

Returns the value of attribute trackerCount.



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# File 'lib/agent/handler/sequence_book.rb', line 6

def trackerCount
  @trackerCount
end

Instance Method Details

#addExceptionInfo(exception) ⇒ Object 



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# File 'lib/agent/handler/sequence_book.rb', line 89

def addExceptionInfo(exception)
  begin
    if @exceptionBag == nil
      @exceptionBag = Set.new
    end
    if (@exceptionBag.size() < 10)
      exceptionRecord = ::APMInsight::Errors::ExceptionRecord.new(exception)
      @exceptionBag.add(exceptionRecord)
    end
  rescue Exception=>e
  end
end

#attachTracker(tracker) ⇒ Object 



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# File 'lib/agent/handler/sequence_book.rb', line 19

def attachTracker tracker
  if tracker == nil
    return nil
  end
  
  # If RootTracker is not set, check type and set
  if @rootTracker == @closedTracker
    if !tracker.is_a?(ManageEngine::Tracker::RootTracker)
      closeSequence()
      return nil
    end
    @rootTracker = tracker
    
    updateListenFlag()
  end
  
  
  # Attach tracker as Sibling or Child and set nominee
  if @closedTracker != nil
    tracker.sibling = @closedTracker
    @closedTracker.sibling = tracker # Nominee - if dropped/corrupted, defaults to this tracker
    @openTracker = tracker
    @closedTracker = nil
  else
    if tracker.equal?(@openTracker)
      return nil
    end
    
    @openTracker.child = tracker
    tracker.sibling = @openTracker
    @openTracker = tracker
  end
  
  checkAndArrestSequence()
  
  return tracker
end

#checkAndArrestSequence ⇒ Object 



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# File 'lib/agent/handler/sequence_book.rb', line 110

def checkAndArrestSequence
  @trackerCount += 1
  if @trackerCount == 1000
    @listenFlag = 1
  end
  
  ## Can check for timeout
end

#closeSequence ⇒ Object 



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# File 'lib/agent/handler/sequence_book.rb', line 81

def closeSequence
  @rootTracker = nil
  @openTracker = @closedTracker = nil
  @trackerCount = 0
  @closedTrackerCount = 0
  Thread.current[:apminsight] = nil
end

#closeTracker(tracker) ⇒ Object 



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# File 'lib/agent/handler/sequence_book.rb', line 57

def closeTracker tracker
  @closedTrackerCount += 1
  @closedTracker = tracker
  tracker.sibling = nil
  @openTracker = nil
  
  # Marks end of transaction
  if @rootTracker == tracker
    if @listenFlag < 1 || (@listenFlag >= 1 && @trackerCount > 1)
      # if some trackers are not closed, while processing the metrics, it may go into infinite loop
      if (@closedTrackerCount - @trackerCount) == 0
        sequenceBag = Hash.new
        sequenceBag["roottracker"] = @rootTracker
        sequenceBag["exceptions"] = @exceptionBag
        
        ManageEngine::APMObjectHolder.instance.collector.updateTransaction(@rootTracker.url, sequenceBag)
      else
        ManageEngine::APMObjectHolder.instance.log.warn "Some trackers are not closed, dropping the metrics for #{@rootTracker.url}"
      end
    end
    closeSequence()
  end
end

#createDummyTracker ⇒ Object 



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# File 'lib/agent/handler/sequence_book.rb', line 119

def createDummyTracker
  return ManageEngine::Tracker::DefaultTracker.new("dummy")
end

#updateListenFlag ⇒ Object 



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# File 'lib/agent/handler/sequence_book.rb', line 102

def updateListenFlag
  if !ManageEngine::APMObjectHolder.instance.txn_util.listen?(@rootTracker.url())
    @listenFlag = 1
  end
  
  ## Check for sampling factor & for bg txn chk if enabled
end