Class: DiskHandler::Disk

Inherits:
Object
  • Object
show all
Defined in:
lib/disk_reporter/disk_handler.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(lsblk_line) ⇒ Disk

Returns a new instance of Disk.



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# File 'lib/disk_reporter/disk_handler.rb', line 19

def initialize lsblk_line
  attrs_from_line lsblk_line
  check_smart_capability!
  check_health! if smart_capable?
  parse_smart_info if smart_capable?
  populate_partitions
end

Instance Attribute Details

#id ⇒ Object

Returns the value of attribute id.



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# File 'lib/disk_reporter/disk_handler.rb', line 5

def id
  @id
end

#model ⇒ Object

Returns the value of attribute model.



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# File 'lib/disk_reporter/disk_handler.rb', line 5

def model
  @model
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/disk_reporter/disk_handler.rb', line 5

def name
  @name
end

#number ⇒ Object

Returns the value of attribute number.



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# File 'lib/disk_reporter/disk_handler.rb', line 5

def number
  @number
end

#partitions ⇒ Object

Returns the value of attribute partitions.



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# File 'lib/disk_reporter/disk_handler.rb', line 5

def partitions
  @partitions
end

#size ⇒ Object

Returns the value of attribute size.



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# File 'lib/disk_reporter/disk_handler.rb', line 5

def size
  @size
end

#state ⇒ Object

Returns the value of attribute state.



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# File 'lib/disk_reporter/disk_handler.rb', line 5

def state
  @state
end

#type ⇒ Object

Returns the value of attribute type.



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# File 'lib/disk_reporter/disk_handler.rb', line 5

def type
  @type
end

#version ⇒ Object

Returns the value of attribute version.



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# File 'lib/disk_reporter/disk_handler.rb', line 5

def version
  @version
end

Instance Method Details

#attrs_from_line(lsblk_line) ⇒ Object 



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# File 'lib/disk_reporter/disk_handler.rb', line 27

def attrs_from_line lsblk_line
  %w{NAME TYPE SIZE MODEL STATE}.each do |key|
    matches = lsblk_line.match(/#{key}="([^"]*)"/)
    self.send("#{key.downcase}=", matches[1]) if matches
  end
end

#check_health! ⇒ Object

Check the SMART health



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# File 'lib/disk_reporter/disk_handler.rb', line 46

def check_health!
  output = `sudo smartctl -H #{device_path}`
  @smart_healthy = !output.scan(/PASSED/).empty?
  @health_output = output
end

#check_smart_capability! ⇒ Object

Checks if disk is capable



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# File 'lib/disk_reporter/disk_handler.rb', line 62

def check_smart_capability!
  output = `sudo smartctl -i #{device_path}`
  @smart_available = !output.scan(/SMART support is: Available/).empty?
  @smart_enabled = !output.scan(/SMART support is: Enabled/).empty?
  @capability_output = output
end

#device_path ⇒ Object 



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# File 'lib/disk_reporter/disk_handler.rb', line 7

def device_path
  "/dev/#{name}"
end

#get_smart_info ⇒ Object 



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# File 'lib/disk_reporter/disk_handler.rb', line 34

def get_smart_info
  `smartctl -i /dev/#{name}`
end

#parse_smart_info ⇒ Object

Parses SMART drive info



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# File 'lib/disk_reporter/disk_handler.rb', line 54

def parse_smart_info
   %w{Id Number Version}.each do |key|
     matches = @capability_output.match(/#{key}:\s+([^\n]*)\n/)
     self.send("#{key.downcase}=", matches[1]) if matches
   end    
end

#populate_partitions ⇒ Object 



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# File 'lib/disk_reporter/disk_handler.rb', line 74

def populate_partitions
  self.partitions = []
  `ls #{device_path}[0-9]* 2>/dev/null`.each_line do |name|
     self.partitions << Partition.new(self, name)
  end
end

#serial_number ⇒ Object 



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# File 'lib/disk_reporter/disk_handler.rb', line 11

def serial_number
 number.strip
end

#smart_capable? ⇒ Boolean

Is the device SMART capable and enabled

Returns:

  • (Boolean) 


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# File 'lib/disk_reporter/disk_handler.rb', line 40

def smart_capable?
  @smart_available && @smart_enabled
end

#to_h ⇒ Object 



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# File 'lib/disk_reporter/disk_handler.rb', line 69

def to_h
  { name: name, size: size, model: model, smart_available: @smart_available, smart_enabled: @smart_enabled, wnn: wnn, serial: serial_number, version: version 
   }
end

#wnn ⇒ Object 



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# File 'lib/disk_reporter/disk_handler.rb', line 15

def wnn
  id.delete(' ')
end