Class: Chef::Provider::Package::Yum::RPMDb

Inherits:
Object
  • Object
show all
Defined in:
lib/chef/provider/package/yum.rb

Overview

Simple storage for RPMPackage objects - keeps them unique and sorted

Instance Method Summary collapse

Constructor Details

#initialize ⇒ RPMDb

Returns a new instance of RPMDb.



513
514
515
516
517
518
519
520
521
522
523
524
 
# File 'lib/chef/provider/package/yum.rb', line 513

def initialize
  # package name => [ RPMPackage, RPMPackage ] of different versions
  @rpms = Hash.new
  # package nevra => RPMPackage for lookups
  @index = Hash.new
  # provide name (aka feature) => [RPMPackage, RPMPackage] each providing this feature
  @provides = Hash.new
  # RPMPackages listed as available
  @available = Set.new
  # RPMPackages listed as installed
  @installed = Set.new
end

Instance Method Details

#<<(*args) ⇒ Object 



584
585
586
 
# File 'lib/chef/provider/package/yum.rb', line 584

def <<(*args)
  self.push(args)
end

#[](package_name) ⇒ Object 



526
527
528
 
# File 'lib/chef/provider/package/yum.rb', line 526

def [](package_name)
  self.lookup(package_name)
end

#available?(package) ⇒ Boolean

Returns:

  • (Boolean) 


617
618
619
 
# File 'lib/chef/provider/package/yum.rb', line 617

def available?(package)
  @available.include?(package)
end

#available_size ⇒ Object 



609
610
611
 
# File 'lib/chef/provider/package/yum.rb', line 609

def available_size
  @available.size
end

#clear ⇒ Object 



588
589
590
591
592
593
594
 
# File 'lib/chef/provider/package/yum.rb', line 588

def clear
  @rpms.clear
  @index.clear
  @provides.clear
  clear_available
  clear_installed
end

#clear_available ⇒ Object 



596
597
598
 
# File 'lib/chef/provider/package/yum.rb', line 596

def clear_available
  @available.clear
end

#clear_installed ⇒ Object 



600
601
602
 
# File 'lib/chef/provider/package/yum.rb', line 600

def clear_installed
  @installed.clear
end

#installed?(package) ⇒ Boolean

Returns:

  • (Boolean) 


621
622
623
 
# File 'lib/chef/provider/package/yum.rb', line 621

def installed?(package)
  @installed.include?(package)
end

#installed_size ⇒ Object 



613
614
615
 
# File 'lib/chef/provider/package/yum.rb', line 613

def installed_size
  @installed.size
end

#lookup(package_name) ⇒ Object

Lookup package_name and return a descending array of package objects



531
532
533
534
535
536
537
538
 
# File 'lib/chef/provider/package/yum.rb', line 531

def lookup(package_name)
  pkgs = @rpms[package_name]
  if pkgs
    return pkgs.sort.reverse
  else
    return nil
  end
end

#lookup_provides(provide_name) ⇒ Object 



540
541
542
 
# File 'lib/chef/provider/package/yum.rb', line 540

def lookup_provides(provide_name)
  @provides[provide_name]
end

#push(*args) ⇒ Object

Using the package name as a key, and nevra for an index, keep a unique list of packages. The available/installed state can be overwritten for existing packages.



546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
 
# File 'lib/chef/provider/package/yum.rb', line 546

def push(*args)
  args.flatten.each do |new_rpm|
    unless new_rpm.kind_of?(RPMDbPackage)
      raise ArgumentError, "Expecting an RPMDbPackage object"
    end

    @rpms[new_rpm.n] ||= Array.new

    # we may already have this one, like when the installed list is refreshed
    idx = @index[new_rpm.nevra]
    if idx
      # grab the existing package if it's not
      curr_rpm = idx
    else
      @rpms[new_rpm.n] << new_rpm

      new_rpm.provides.each do |provide|
        @provides[provide.name] ||= Array.new
        @provides[provide.name] << new_rpm
      end

      curr_rpm = new_rpm
    end

    # Track the nevra -> RPMPackage association to avoid having to compare versions
    # with @rpms[new_rpm.n] on the next round
    @index[new_rpm.nevra] = curr_rpm

    # these are overwritten for existing packages
    if new_rpm.available
      @available << curr_rpm
    end
    if new_rpm.installed
      @installed << curr_rpm
    end
  end
end

#size ⇒ Object Also known as: length 



604
605
606
 
# File 'lib/chef/provider/package/yum.rb', line 604

def size
  @rpms.size
end

#whatprovides(rpmdep) ⇒ Object 



625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
 
# File 'lib/chef/provider/package/yum.rb', line 625

def whatprovides(rpmdep)
  unless rpmdep.kind_of?(RPMDependency)
    raise ArgumentError, "Expecting an RPMDependency object"
  end

  what = []

  packages = lookup_provides(rpmdep.name)
  if packages
    packages.each do |pkg|
      pkg.provides.each do |provide|
        if provide.satisfy?(rpmdep)
          what << pkg
        end
      end
    end
  end

  return what
end