Class: ConfCtl::Generation::HostList

Inherits:
Object
  • Object
show all
Defined in:
lib/confctl/generation/host_list.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(host) ⇒ HostList

Returns a new instance of HostList.

Parameters:

  • host (String) 


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# File 'lib/confctl/generation/host_list.rb', line 64

def initialize(host)
  @host = host
  @generations = []
end

Instance Attribute Details

#host ⇒ String (readonly)

Returns:

  • (String) 


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# File 'lib/confctl/generation/host_list.rb', line 61

def host
  @host
end

Class Method Details

.fetch(machine, mc, profile:) ⇒ Generation::HostList

Parameters:

Returns:



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# File 'lib/confctl/generation/host_list.rb', line 7

def self.fetch(machine, mc, profile:)
  out, = mc.bash_script("    realpath \#{profile}\n\n    for generation in `ls -d -1 \#{profile}-*-link` ; do\n      echo -n \"$generation;\"\n      echo -n \"$(readlink $generation);\"\n      echo -n \"$(stat --format=%Y $generation);\"\n\n      for kernel_file in kernel bzImage ; do\n        [ -h \"$generation/$kernel_file\" ] && echo -n $(readlink \"$generation/$kernel_file\")\n      done\n\n      echo\n    done\n  END\n\n  list = new(machine.name)\n  lines = out.strip.split(\"\\n\")\n  current_path = lines.shift\n  id_rx = /^\#{Regexp.escape(profile)}-(\\d+)-link$/\n\n  lines.each do |line|\n    link, path, created_at, kernel = line.split(';')\n\n    if id_rx =~ link\n      id = ::Regexp.last_match(1).to_i\n    else\n      warn \"Invalid profile generation link '\#{link}'\"\n      next\n    end\n\n    kernel_version =\n      if kernel && %r{\\A/nix/store/[^-]+-linux-([^/]+)} =~ kernel\n        ::Regexp.last_match(1)\n      end\n\n    list << Generation::Host.new(\n      machine,\n      profile,\n      id,\n      path,\n      Time.at(created_at.to_i),\n      kernel_version,\n      current: path == current_path,\n      mc:\n    )\n  end\n\n  list.sort\n  list\nend\n")

Instance Method Details

#<<(generation) ⇒ Object

Parameters:



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# File 'lib/confctl/generation/host_list.rb', line 70

def <<(generation)
  generations << generation
end

#count ⇒ Integer

Returns:

  • (Integer) 


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# File 'lib/confctl/generation/host_list.rb', line 83

def count
  generations.length
end

#current ⇒ Generation::Host

Returns:



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# File 'lib/confctl/generation/host_list.rb', line 88

def current
  generations.detect(&:current)
end

#each ⇒ Object 



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# File 'lib/confctl/generation/host_list.rb', line 78

def each(&)
  generations.each(&)
end

#sort ⇒ Object 



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# File 'lib/confctl/generation/host_list.rb', line 74

def sort
  generations.sort! { |a, b| a.id <=> b.id }
end