Class: Shaf::Upgrade::Package

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/shaf/upgrade/package.rb

Defined Under Namespace

Classes: BadChecksumError, ManifestNotFoundError, MissingFileError, UpgradeError, VersionConflictError, VersionNotFoundError

Constant Summary collapse

UPGRADE_FILES_PATH = 
File.join(Utils.gem_root, 'upgrades').freeze
MANIFEST_FILENAME = 
'manifest'.freeze
IGNORE_FILE_PATTERNS = 
[/.rej\z/, /.orig\z/]

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(version, manifest = nil, files = {}) ⇒ Package

Returns a new instance of Package.



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# File 'lib/shaf/upgrade/package.rb', line 59

def initialize(version, manifest = nil, files = {})
  @version = Version.new(version)
  @manifest = manifest
  @files = files
end

Instance Attribute Details

#manifest ⇒ Object (readonly)

Returns the value of attribute manifest.



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# File 'lib/shaf/upgrade/package.rb', line 57

def manifest
  @manifest
end

#version ⇒ Object (readonly)

Returns the value of attribute version.



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# File 'lib/shaf/upgrade/package.rb', line 57

def version
  @version
end

Class Method Details

.all ⇒ Object 



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# File 'lib/shaf/upgrade/package.rb', line 30

def all
  target_versions.map(&method(:new))
end

.load(version) ⇒ Object

Raises:



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# File 'lib/shaf/upgrade/package.rb', line 34

def load(version)
  v = strip_suffix(version)
  raise VersionNotFoundError unless target_versions.include? v
  new(v).tap(&:load)
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/shaf/upgrade/package.rb', line 77

def <=>(other)
  version = other.is_a?(String) ? other : other.version
  @version <=> version
end

#apply(dir = nil) ⇒ Object 



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# File 'lib/shaf/upgrade/package.rb', line 82

def apply(dir = nil)
  puts "\n ## Applying changes for Shaf version: #{version} ##"

  FT.transaction do
    result = [
      apply_patches(dir),
      apply_drops(dir),
      apply_additions,
      apply_substitutes(dir),
      print_messages,
    ]
    raise UpgradeError, 'Upgrade failed' unless result.all?
  end

  true
end

#load ⇒ Object 



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# File 'lib/shaf/upgrade/package.rb', line 65

def load
  File.open(tarball, 'rb') do |file|
    Zlib::GzipReader.wrap(file) do |gz|
      Gem::Package::TarReader.new(gz) do |tar|
        tar.each(&method(:add_tar_entry))
      end
    end
  end
  validate
  self
end

#to_s ⇒ Object 



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# File 'lib/shaf/upgrade/package.rb', line 99

def to_s
  str = "Shaf::Upgrade::Package for version #{version}"
  return str if manifest.nil?
  "#{str} (#{manifest.stats_str})"
end