Class: SystemdMon::StateChange

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/systemd_mon/state_change.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(original_state = nil) ⇒ StateChange

Returns a new instance of StateChange.



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# File 'lib/systemd_mon/state_change.rb', line 7

def initialize(original_state = nil)
  self.states = []
  states << original_state if original_state
end

Instance Attribute Details

#states ⇒ Object

Returns the value of attribute states.



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# File 'lib/systemd_mon/state_change.rb', line 5

def states
  @states
end

Instance Method Details

#<<(state) ⇒ Object 



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# File 'lib/systemd_mon/state_change.rb', line 20

def <<(state)
  self.states << state
  @diff = nil
end

#auto_restart? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/systemd_mon/state_change.rb', line 51

def auto_restart?
  first.ok? && last.ok? && changes.any? { |s| s.sub == "auto-restart" }
end

#changes ⇒ Object 



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# File 'lib/systemd_mon/state_change.rb', line 31

def changes
  states[1..-1]
end

#diff ⇒ Object 



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# File 'lib/systemd_mon/state_change.rb', line 89

def diff
  @diff ||= zipped.reject { |states|
    match = states.first.value
    states.all? { |s| s.value == match }
  }
end

#each ⇒ Object 



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# File 'lib/systemd_mon/state_change.rb', line 25

def each
  states.each do |state|
    yield state
  end
end

#fail? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/systemd_mon/state_change.rb', line 43

def fail?
  last.fail?
end

#important? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/systemd_mon/state_change.rb', line 81

def important?
  if length == 1
    first.fail?
  else
    diff.map(&:last).any?(&:important?)
  end
end

#last ⇒ Object 



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# File 'lib/systemd_mon/state_change.rb', line 12

def last
  states.last
end

#length ⇒ Object 



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# File 'lib/systemd_mon/state_change.rb', line 16

def length
  states.length
end

#ok? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/systemd_mon/state_change.rb', line 39

def ok?
  last.ok?
end

#recovery? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/systemd_mon/state_change.rb', line 35

def recovery?
  first.fail? && last.ok?
end

#reload? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/systemd_mon/state_change.rb', line 55

def reload?
  first.ok? && last.ok? && changes.any? { |s| s.active == "reloading" }
end

#restart? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/systemd_mon/state_change.rb', line 47

def restart?
  first.ok? && last.ok? && changes.any? { |s| s.active == "deactivating" }
end

#status_text ⇒ Object 



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# File 'lib/systemd_mon/state_change.rb', line 63

def status_text
  if recovery?
    "recovered"
  elsif auto_restart?
    "automatically restarted"
  elsif restart?
    "restarted"
  elsif reload?
    "reloaded"
  elsif still_fail?
    "still failed"
  elsif fail?
    "failed"
  else
    "started"
  end
end

#still_fail? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/systemd_mon/state_change.rb', line 59

def still_fail?
  length > 1 && first.fail? && last.fail?
end

#to_s ⇒ Object 



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# File 'lib/systemd_mon/state_change.rb', line 104

def to_s
  diff.inject("") { |s, (*states)|
    first = states.shift
    s << "#{first.name} state changed from #{first.value} to "
    s << states.map(&:value).join(" then ")
    s << "\n"
    s
  }
end

#zipped ⇒ Object 



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# File 'lib/systemd_mon/state_change.rb', line 96

def zipped
  if length == 1
    first.all_states
  else
    first.all_states.zip(*changes.map(&:all_states))
  end
end