Class: Teleport::Infer::Apt

Inherits:
Object
  • Object
show all
Includes:
Util
Defined in:
lib/teleport/infer.rb

Defined Under Namespace

Classes: Package

Constant Summary collapse

BLACKLIST = 
/^(linux-|grub-|cloud-init)/

Constants included from Util

Util::BLUE, Util::CYAN, Util::GREEN, Util::MAGENTA, Util::RED, Util::RESET, Util::YELLOW

Instance Method Summary collapse

Methods included from Util

#banner, #chmod, #chown, #copy_metadata, #copy_perms, #cp, #cp_if_necessary, #cp_with_mkdir, #different?, #fails?, #fatal, #gem_if_necessary, #gem_version, #ln, #ln_if_necessary, #md5sum, #mkdir, #mkdir_if_necessary, #mv, #mv_with_mkdir, #package_if_necessary, #package_is_installed?, #process_by_pid?, #rm, #rm_and_mkdir, #rm_if_necessary, #run, #run_capture, #run_capture_lines, #run_quietly, #run_verbose!, #shell, #shell_escape, #succeeds?, #warning, #whoami

Constructor Details

#initialize ⇒ Apt

Returns a new instance of Apt.



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# File 'lib/teleport/infer.rb', line 248

def initialize
  @packages = nil
  @map = nil
end

Instance Method Details

#[](name) ⇒ Object 



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# File 'lib/teleport/infer.rb', line 284

def [](name)
  if !@map
    @map = { }
    packages.each { |i| @map[i.name] = i }
  end
  @map[name]
end

#added ⇒ Object 



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# File 'lib/teleport/infer.rb', line 317

def added
  # calculate raw list
  ignored = Set.new(ignored_packages)
  list = packages.select do |i|
    i.status == "install ok installed" && !ignored.include?(i.name)
  end
  list = list.map(&:name)

  # now calculate parents
  roots = []
  check = list
  while !check.empty?
    check = check.map do |i|
      if pkg = self[i]
        if !pkg.parents.empty?
          pkg.parents
        else
          roots << pkg.name
          nil
        end
      end
    end
    check = check.compact.flatten.uniq.sort
    check -= list
    list += check
  end

  # blacklist
  roots = roots.reject { |i| i =~ BLACKLIST }

  roots.sort
end

#base_packages ⇒ Object 



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# File 'lib/teleport/infer.rb', line 292

def base_packages
  packages.select { |i| i.base }.map(&:name)
end

#dependencies(list) ⇒ Object 



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# File 'lib/teleport/infer.rb', line 302

def dependencies(list)
  check = list
  while !check.empty?
    check = check.map do |i|
      if pkg = self[i]
        pkg.deps
      end
    end
    check = check.compact.flatten.uniq.sort
    check -= list
    list += check
  end
  list.sort
end

#ignored_packages ⇒ Object 



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# File 'lib/teleport/infer.rb', line 296

def ignored_packages
  list = packages.select { |i| i.base }.map(&:name)
  list += %w(grub-pc installation-report language-pack-en language-pack-gnome-en linux-generic-pae linux-server os-prober ubuntu-desktop ubuntu-minimal ubuntu-standard wireless-crda)
  dependencies(list)
end

#packages ⇒ Object 



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# File 'lib/teleport/infer.rb', line 253

def packages
  if !@packages
    # run dpkg
    lines = run_capture_lines("dpkg-query '-f=${Package}\t${Status}\t${Pre-Depends},${Depends},${Recommends}\t${Essential}\t${Priority}\n' -W")
    @packages = lines.map do |line|
      name, status, deps, essential, priority = line.split("\t")
      deps = deps.gsub(/\([^)]+\)/, "")
      deps = deps.split(/[,|]/)
      deps = deps.map(&:strip).select { |i| !i.empty? }.sort
      base = false
      base = true if essential == "yes"
      base = true if priority =~ /^(important|required|standard)$/
      Package.new(name, status, deps, base, [])
    end

    # calculate ancestors
    @packages.each do |pkg|
      pkg.deps.each do |i|
        if d = self[i]
          d.parents << pkg.name
        end
      end
    end
    @packages.each do |pkg|
      pkg.parents = pkg.parents.sort.uniq
    end
  end

  @packages
end