Class: Y2Packager::ProductReader

Inherits:
Object
  • Object
show all
Includes:
Yast::Logger
Defined in:
library/packages/src/lib/y2packager/product_reader.rb

Overview

Read the product information from libzypp

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.installation_package_mapping ⇒ Hash<String,String>

Installation packages map

This map contains the correspondence between products and the installation package for each product.

The information is always read again. Reason is that that url can be invalid, but user fix it later. This way it cache invalid result. See bsc#1086840 ProductReader instance cache it properly, but caching for installation life-time should be prevented.

Returns:

  • (Hash<String,String>) —

    product name -> installation package name



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# File 'library/packages/src/lib/y2packager/product_reader.rb', line 39

def installation_package_mapping
  installation_packages = Yast::Pkg.PkgQueryProvides("system-installation()")
  log.info "Installation packages: #{installation_packages.inspect}"

  installation_package_mapping = {}
  installation_packages.each do |list|
    pkg_name = list.first
    # There can be more instances of same package in different version.
    # Prefer the selected or the available package, they should provide newer data
    # than the installed one.
    packages = Yast::Pkg.Resolvables({ name: pkg_name, kind: :package }, [:dependencies, :status])
    package = packages.find { |p| p["status"] == :selected } ||
      packages.find { |p| p["status"] == :available } ||
      packages.first

    dependencies = package["deps"]
    install_provides = dependencies.find_all do |d|
      d["provides"]&.match(/system-installation\(\)/)
    end

    # parse product name from provides. Format of provide is
    # `system-installation() = <product_name>`
    install_provides.each do |install_provide|
      product_name = install_provide["provides"][/system-installation\(\)\s*=\s*(\S+)/, 1]
      log.info "package #{pkg_name} install product #{product_name}"
      installation_package_mapping[product_name] = pkg_name
    end

  end

  installation_package_mapping
end

Instance Method Details

#all_installed_products ⇒ Array<Y2Packager::Product>

All installed products

Returns:



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# File 'library/packages/src/lib/y2packager/product_reader.rb', line 142

def all_installed_products
  installed_products.map do |p|
    Y2Packager::Product.from_resolvable(p, installation_package_mapping[p.name])
  end
end

#all_products(force_repos: false) ⇒ Array<Product>

Available products

Returns:

  • (Array<Product>) —

    Available products



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# File 'library/packages/src/lib/y2packager/product_reader.rb', line 76

def all_products(force_repos: false)
  linuxrc_special_products = if Yast::Linuxrc.InstallInf("specialproduct")
    linuxrc_string(Yast::Linuxrc.InstallInf("specialproduct")).split(",")
  else
    []
  end

  return @all_products if @all_products && !force_repos

  @all_products = []

  available_products.each do |prod|
    prod_pkg = product_package(prod.product_package)

    if prod_pkg
      # remove special products if they have not been defined in linuxrc
      prod_pkg.deps.find { |dep| dep["provides"] =~ /\Aspecialproduct\(\s*(.*?)\s*\)\z/ }
      special_product_tag = linuxrc_string(Regexp.last_match[1]) if Regexp.last_match
      if special_product_tag && !linuxrc_special_products.include?(special_product_tag)
        log.info "Special product #{prod.name} has not been defined via linuxrc. --> do not offer it"
        next
      end

      # Evaluating display order
      prod_pkg.deps.find { |dep| dep["provides"] =~ /\Adisplayorder\(\s*([0-9]+)\s*\)\z/ }
      displayorder = Regexp.last_match[1].to_i if Regexp.last_match
    end

    @all_products << Y2Packager::Product.from_resolvable(
      prod, installation_package_mapping[prod.name], displayorder
    )
  end

  @all_products
end

#available_base_products(force_repos: false) ⇒ Array<Y2Packager::Product>

In installation Read the available libzypp base products for installation

Returns:

  • (Array<Y2Packager::Product>) —

    the found available base products, the products are sorted by the 'displayorder' provides value



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# File 'library/packages/src/lib/y2packager/product_reader.rb', line 115

def available_base_products(force_repos: false)
  # If no product contains a 'system-installation()' tag but there is only 1 product,
  # we assume that it is the base one.
  products = all_products(force_repos: force_repos)
  if products.size == 1 && installation_package_mapping.empty?
    log.info "Assuming that #{products.inspect} is the base product."
    return products
  end

  log.info "all products #{products}"
  # only installable products
  products = products.select(&:installation_package).sort(&::Y2Packager::PRODUCT_SORTER)
  log.info "available base products #{products}"
  products
end

#installed_base_product ⇒ Y2Packager::Product?

Read the installed base product

Returns:



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# File 'library/packages/src/lib/y2packager/product_reader.rb', line 133

def installed_base_product
  base = base_product
  return nil unless base

  Y2Packager::Product.from_resolvable(base, installation_package_mapping[base.name])
end

#product_package(name, _repo_id = nil) ⇒ Object 



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# File 'library/packages/src/lib/y2packager/product_reader.rb', line 148

def product_package(name, _repo_id = nil)
  return nil unless name

  # find the highest version
  Y2Packager::Resolvable.find(kind: :package, name: name).reduce(nil) do |a, p|
    (!a || (Yast::Pkg.CompareVersions(a.version, p.version) < 0)) ? p : a
  end
end