Class: Mool::Disk

Inherits:
Base
  • Object
show all
Defined in:
lib/mool/disk.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#attrs

Constructor Details

#initialize(devname, path = nil) ⇒ Disk

Returns a new instance of Disk.



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# File 'lib/mool/disk.rb', line 24

def initialize(devname, path = nil)
  @unity = Mool::BYTES
  @devname = devname

  @path = if path.nil?
            Mool::Disk.proc_partitions_hash(@devname)[:path]
          else
            path
          end

  raise "Does't exist #{devname} on #{@path}" if @path.nil? || @devname.nil?
  lname = Mool::Command.logical_name(@path)
  @logical_name = lname.blank? ? @devname : lname
  read_uevent
  capacity
end

Instance Attribute Details

#block_free ⇒ Object

Returns the value of attribute block_free.



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# File 'lib/mool/disk.rb', line 3

def block_free
  @block_free
end

#block_used ⇒ Object

Returns the value of attribute block_used.



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# File 'lib/mool/disk.rb', line 3

def block_used
  @block_used
end

#devname ⇒ Object

Returns the value of attribute devname.



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# File 'lib/mool/disk.rb', line 3

def devname
  @devname
end

#devtype ⇒ Object

Returns the value of attribute devtype.



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# File 'lib/mool/disk.rb', line 3

def devtype
  @devtype
end

#file_system ⇒ Object

Returns the value of attribute file_system.



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# File 'lib/mool/disk.rb', line 3

def file_system
  @file_system
end

#free_size ⇒ Object

Returns the value of attribute free_size.



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# File 'lib/mool/disk.rb', line 3

def free_size
  @free_size
end

#logical_name ⇒ Object

Returns the value of attribute logical_name.



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# File 'lib/mool/disk.rb', line 3

def logical_name
  @logical_name
end

#major ⇒ Object

Returns the value of attribute major.



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# File 'lib/mool/disk.rb', line 3

def major
  @major
end

#minor ⇒ Object

Returns the value of attribute minor.



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# File 'lib/mool/disk.rb', line 3

def minor
  @minor
end

#mount_point ⇒ Object

Returns the value of attribute mount_point.



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# File 'lib/mool/disk.rb', line 3

def mount_point
  @mount_point
end

#partitions ⇒ Object

Returns the value of attribute partitions.



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# File 'lib/mool/disk.rb', line 3

def partitions
  @partitions
end

#path ⇒ Object

Returns the value of attribute path.



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# File 'lib/mool/disk.rb', line 3

def path
  @path
end

#percentage_used ⇒ Object

Returns the value of attribute percentage_used.



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# File 'lib/mool/disk.rb', line 3

def percentage_used
  @percentage_used
end

#size ⇒ Object

Returns the value of attribute size.



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# File 'lib/mool/disk.rb', line 3

def size
  @size
end

#slaves ⇒ Object

Returns the value of attribute slaves.



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# File 'lib/mool/disk.rb', line 3

def slaves
  @slaves
end

#swap ⇒ Object

Returns the value of attribute swap.



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# File 'lib/mool/disk.rb', line 3

def swap
  @swap
end

#total_block ⇒ Object

Returns the value of attribute total_block.



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# File 'lib/mool/disk.rb', line 3

def total_block
  @total_block
end

#total_size ⇒ Object

Returns the value of attribute total_size.



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# File 'lib/mool/disk.rb', line 3

def total_size
  @total_size
end

#unity ⇒ Object

Returns the value of attribute unity.



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# File 'lib/mool/disk.rb', line 3

def unity
  @unity
end

#used_size ⇒ Object

Returns the value of attribute used_size.



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# File 'lib/mool/disk.rb', line 3

def used_size
  @used_size
end

Class Method Details

.all ⇒ Object 



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# File 'lib/mool/disk.rb', line 238

def self.all
  disks = []

  proc_partitions_hash.each do |disk_name, disk_opts|
    all_partitions = []
    disk = Mool::Disk.new(disk_name, disk_opts[:path])

    disk_opts[:partitions].map do |partition_name, partition_opts|
      partition = Mool::Disk.new(
        partition_name,
        partition_opts[:path]
      )

      all_partitions << partition

      partition.slaves = partition_opts[:slaves].map do |slave_name, slave_opts|
        Mool::Disk.new(
          slave_name,
          slave_opts[:path]
        )
      end
    end

    disk.partitions = all_partitions

    disk.slaves = disk_opts[:slaves].map do |slave_name, slave_opts|
      Mool::Disk.new(
        slave_name,
        slave_opts[:path]
      )
    end

    disks << disk
  end

  disks.each do |disk|
    disk.partitions.each do |partition|
      partition.slaves.each do |slave|
        partition.total_size += slave.total_size
        partition.used_size += slave.used_size
        partition.free_size += slave.free_size
        partition.block_free += slave.block_free
        partition.block_used += slave.block_used
        partition.total_block += slave.total_block
      end
      disk.total_size += partition.total_size
      disk.used_size += partition.used_size
      disk.free_size += partition.free_size
      disk.block_free += partition.block_free
      disk.block_used += partition.block_used
      disk.total_block += partition.total_block
    end
  end

  disks
end

.find_especific_devname(obj, key) ⇒ Object 



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# File 'lib/mool/disk.rb', line 204

def self.find_especific_devname(obj, key)
  if obj.respond_to?(:key?) && obj.key?(key)
    obj[key]
  elsif obj.respond_to?(:each)
    r = nil
    obj.find { |*a| r = find_especific_devname(a.last, key) }
    r
  end
end

.find_partitions(disk, all_partitions) ⇒ Object 



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# File 'lib/mool/disk.rb', line 184

def self.find_partitions(disk, all_partitions)
  parts = Mool::Command.partitions(disk)

  result = {}

  parts.each do |part|
    all_partitions.each do |partition|
      devname = partition[3]
      next unless part.include?(devname)
      all_partitions.delete(partition)
      result[devname] = {
        path: part,
        slaves: find_slaves(part, all_partitions)
      }
    end
  end

  result
end

.find_slaves(path, all_partitions) ⇒ Object 



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# File 'lib/mool/disk.rb', line 167

def self.find_slaves(path, all_partitions)
  slaves = Mool::Command.holders(path)

  result = {}

  slaves.each do |slave|
    all_partitions.each do |partition|
      devname = partition[3]
      next unless slave.include?(devname)
      all_partitions.delete(partition)
      result[devname] = { path: path + "/holders/#{slave}" }
    end
  end

  result
end

.proc_partitions_hash(especific_devname = nil) ⇒ Object 



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# File 'lib/mool/disk.rb', line 214

def self.proc_partitions_hash(especific_devname = nil)
  all_partitions = Mool::Command.all_partitions.scan(/(\d+)\s+(\d+)\s+(\d+)\s+(\S+)/)
  hash_disks = {}

  all_partitions.each do |partition|
    if partition[3].include?('ram') || partition[3].include?('sr')
      all_partitions.delete(partition)
      next
    end
    devname = partition[3]
    path = "/sys/block/#{devname}"
    next unless Mool::Command.root_block_device?(devname)
    all_partitions.delete(partition)
    hash_disks[devname] = {
      path: path,
      partitions: find_partitions(devname, all_partitions),
      slaves: find_slaves(path, all_partitions)
    }
  end

  return hash_disks if especific_devname.nil?
  find_especific_devname(hash_disks, especific_devname)
end

.swap ⇒ Object 



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# File 'lib/mool/disk.rb', line 162

def self.swap
  result = Mool::Command.swap.scan(%r{/.*\n\/dev\/(\S+)/}).flatten.first
  Mool::Disk.new(result) unless result.nil?
end

Instance Method Details

#capacity ⇒ Object 



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# File 'lib/mool/disk.rb', line 84

def capacity
  return if defined?(@total_block) && defined?(@block_used) && defined?(@block_free)
  result = Mool::Command.df.scan(
    /(#{@logical_name}|#{@devname})\s+(\d+)\s+(\d+)\s+(\d+)\s+(\S+)/
  ).flatten

  # @total_block = Mool::Command.capacity_partition_command(@path).chomp.to_f
  @total_block = result[1].to_f
  @total_size = result[1].to_f * Mool::BLOCK_SIZE
  @block_used  = result[2].to_f
  @block_free  = result[3].to_f
  @used_size = result[2].to_f * Mool::BLOCK_SIZE
  @free_size = result[3].to_f * Mool::BLOCK_SIZE
  return if result.empty?
  @percentage_used = result[4].delete('%')
end

#dev ⇒ Object 



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# File 'lib/mool/disk.rb', line 68

def dev
  @major + @minor
end

#disk? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mool/disk.rb', line 72

def disk?
  @devtype == 'disk'
end

#free_percent ⇒ Object 



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# File 'lib/mool/disk.rb', line 126

def free_percent
  @block_free / @total_block
end

#mounting_point ⇒ Object 



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# File 'lib/mool/disk.rb', line 41

def mounting_point
  @mount_point = nil
  Mool::Command.mount.include?(@devname) &&
    @mount_point ||= Mool::Command.mount.scan(
    /#{@devname} (\S+)/
  ).flatten.first
end

#partition? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mool/disk.rb', line 76

def partition?
  @devtype == 'partition'
end

#read_uevent ⇒ Object 



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# File 'lib/mool/disk.rb', line 58

def read_uevent
  @major,
  @minor,
  @devname,
  @devtype =
  Mool::Command.uevent(@path).split("\n").map do |result|
    result.split('=').last
  end
end

#to_b ⇒ Object 



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# File 'lib/mool/disk.rb', line 130

def to_b
  Mool.parse_to(self,
                ['@total_block',
                 '@block_used',
                 '@block_free'],
                Mool::BYTES)
end

#to_gb ⇒ Object 



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# File 'lib/mool/disk.rb', line 154

def to_gb
  Mool.parse_to(self,
                ['@total_block',
                 '@block_used',
                 '@block_free'],
                Mool::GBYTES)
end

#to_kb ⇒ Object 



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# File 'lib/mool/disk.rb', line 138

def to_kb
  Mool.parse_to(self,
                ['@total_block',
                 '@block_used',
                 '@block_free'],
                Mool::KBYTES)
end

#to_mb ⇒ Object 



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# File 'lib/mool/disk.rb', line 146

def to_mb
  Mool.parse_to(self,
                ['@total_block',
                 '@block_used',
                 '@block_free'],
                Mool::MBYTES)
end

#used_percent ⇒ Object 



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# File 'lib/mool/disk.rb', line 122

def used_percent
  @block_used / @total_block
end