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

Inherits:
Chef::Provider::Package show all
Includes:
Mixin::GetSourceFromPackage
Defined in:
lib/chef/provider/package/yum.rb

Defined Under Namespace

Classes: RPMDb, RPMDbPackage, RPMDependency, RPMPackage, RPMProvide, RPMRequire, RPMUtils, RPMVersion, YumCache

Constant Summary

Constants included from Mixin::ShellOut

Mixin::ShellOut::DEPRECATED_OPTIONS

Instance Attribute Summary

Attributes inherited from Chef::Provider::Package

#candidate_version

Attributes inherited from Chef::Provider

#action, #cookbook_name, #current_resource, #new_resource, #recipe_name, #run_context

Instance Method Summary collapse

Methods inherited from Chef::Provider::Package

#action_install, #action_purge, #action_reconfig, #action_remove, #as_array, #define_resource_requirements, #expand_options, #get_preseed_file, #have_any_matching_version?, #preseed_package, #preseed_resource, #reconfig_package, #removing_package?, #target_version_already_installed?, #whyrun_supported?

Methods included from Mixin::ShellOut

#run_command_compatible_options, #shell_out, #shell_out!, #shell_out_with_systems_locale, #shell_out_with_systems_locale!

Methods included from Mixin::Command

#chdir_or_tmpdir, #handle_command_failures, #output_of_command, #run_command, #run_command_and_return_stdout_stderr, #run_command_with_systems_locale

Methods included from Mixin::Command::Windows

#popen4

Methods included from Mixin::Command::Unix

#popen4

Methods inherited from Chef::Provider

#action_nothing, #cleanup_after_converge, #converge_by, #define_resource_requirements, #events, #node, node_map, #process_resource_requirements, provides, provides?, #requirements, #resource_collection, #resource_updated?, #run_action, #set_updated_status, supports?, #whyrun_mode?, #whyrun_supported?

Methods included from Mixin::DescendantsTracker

#descendants, descendants, direct_descendants, #direct_descendants, find_descendants_by_name, #find_descendants_by_name, #inherited, store_inherited

Constructor Details

#initialize(new_resource, run_context) ⇒ Yum

Returns a new instance of Yum.



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# File 'lib/chef/provider/package/yum.rb', line 952

def initialize(new_resource, run_context)
  super

  @yum = YumCache.instance
end

Instance Method Details

#action_upgrade ⇒ Object

Keep upgrades from trying to install an older candidate version. Can happen when a new version is installed then removed from a repository, now the older available version shows up as a viable install candidate.

Can be done in upgrade_package but an upgraded from->to log message slips out

Hacky - better overall solution? Custom compare in Package provider?



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# File 'lib/chef/provider/package/yum.rb', line 1203

def action_upgrade
  # Could be uninstalled or have no candidate
  if @current_resource.version.nil? || !candidate_version_array.any?
    super
  elsif candidate_version_array.zip(current_version_array).any? do |c, i|
          RPMVersion.parse(c) > RPMVersion.parse(i)
        end
    super
  else
    Chef::Log.debug("#{@new_resource} is at the latest version - nothing to do")
  end
end

#arch ⇒ Object

Extra attributes



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# File 'lib/chef/provider/package/yum.rb', line 961

def arch
  if @new_resource.respond_to?("arch")
    @new_resource.arch
  else
    nil
  end
end

#flush_cache ⇒ Object 



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# File 'lib/chef/provider/package/yum.rb', line 969

def flush_cache
  if @new_resource.respond_to?("flush_cache")
    @new_resource.flush_cache
  else
    { :before => false, :after => false }
  end
end

#install_package(name, version) ⇒ Object 



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# File 'lib/chef/provider/package/yum.rb', line 1182

def install_package(name, version)
  if @new_resource.source
    yum_command("yum -d0 -e0 -y#{expand_options(@new_resource.options)} localinstall #{@new_resource.source}")
  else
    install_remote_package(name, version)
  end

  if flush_cache[:after]
    @yum.reload
  else
    @yum.reload_installed
  end
end

#install_remote_package(name, version) ⇒ Object 



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# File 'lib/chef/provider/package/yum.rb', line 1116

def install_remote_package(name, version)
  # Work around yum not exiting with an error if a package doesn't exist
  # for CHEF-2062
  all_avail = as_array(name).zip(as_array(version)).any? do |n, v|
    @yum.version_available?(n, v, arch)
  end
  method = log_method = nil
  methods = []
  if all_avail
    # More Yum fun:
    #
    # yum install of an old name+version will exit(1)
    # yum install of an old name+version+arch will exit(0) for some reason
    #
    # Some packages can be installed multiple times like the kernel
    as_array(name).zip(as_array(version)).each do |n, v|
      method = "install"
      log_method = "installing"
      idx = package_name_array.index(n)
      unless @yum.allow_multi_install.include?(n)
        if RPMVersion.parse(current_version_array[idx]) > RPMVersion.parse(v)
          # We allow downgrading only in the evenit of single-package
          # rules where the user explicitly allowed it
          if allow_downgrade
            method = "downgrade"
            log_method = "downgrading"
          else
            # we bail like yum when the package is older
            raise Chef::Exceptions::Package, "Installed package #{n}-#{current_version_array[idx]} is newer " +
                                             "than candidate package #{n}-#{v}"
          end
        end
      end
      # methods don't count for packages we won't be touching
      next if RPMVersion.parse(current_version_array[idx]) == RPMVersion.parse(v)
      methods << method
    end

    # We could split this up into two commands if we wanted to, but
    # for now, just don't support this.
    if methods.uniq.length > 1
      raise Chef::Exceptions::Package, "Multipackage rule #{name} has a mix of upgrade and downgrade packages. Cannot proceed."
    end

    repos = []
    pkg_string_bits = []
    index = 0
    as_array(name).zip(as_array(version)).each do |n, v|
      s = ''
      unless v == current_version_array[index]
        s = "#{n}-#{v}#{yum_arch}"
        repo = @yum.package_repository(n, v, arch)
        repos << "#{s} from #{repo} repository"
        pkg_string_bits << s
      end
      index += 1
    end
    pkg_string = pkg_string_bits.join(' ')
    Chef::Log.info("#{@new_resource} #{log_method} #{repos.join(' ')}")
    yum_command("yum -d0 -e0 -y#{expand_options(@new_resource.options)} #{method} #{pkg_string}")
  else
    raise Chef::Exceptions::Package, "Version #{version} of #{name} not found. Did you specify both version " +
                                     "and release? (version-release, e.g. 1.84-10.fc6)"
  end
end

#load_current_resource ⇒ Object

Standard Provider methods for Parent



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# File 'lib/chef/provider/package/yum.rb', line 1017

def load_current_resource
  if flush_cache[:before]
    @yum.reload
  end

  if @new_resource.options
    repo_control = []
    @new_resource.options.split.each do |opt|
      if opt =~ %r{--(enable|disable)repo=.+}
        repo_control << opt
      end
    end

    if repo_control.size > 0
      @yum.enable_extra_repo_control(repo_control.join(" "))
    else
      @yum.disable_extra_repo_control
    end
  else
    @yum.disable_extra_repo_control
  end

  # At this point package_name could be:
  #
  # 1) a package name, eg: "foo"
  # 2) a package name.arch, eg: "foo.i386"
  # 3) or a dependency, eg: "foo >= 1.1"

  # Check if we have name or name+arch which has a priority over a dependency
  package_name_array.each_with_index do |n, index|
    unless @yum.package_available?(n)
      # If they aren't in the installed packages they could be a dependency
      dep = parse_dependency(n, new_version_array[index])
      if dep
        if @new_resource.package_name.is_a?(Array)
          @new_resource.package_name(package_name_array - [n] + [dep.first])
          @new_resource.version(new_version_array - [new_version_array[index]] + [dep.last]) if dep.last
        else
          @new_resource.package_name(dep.first)
          @new_resource.version(dep.last) if dep.last
        end
      end
    end
  end

  # Don't overwrite an existing arch
  unless arch
    parse_arch
  end

  @current_resource = Chef::Resource::Package.new(@new_resource.name)
  @current_resource.package_name(@new_resource.package_name)

  installed_version = []
  @candidate_version = []
  if @new_resource.source
    unless ::File.exists?(@new_resource.source)
      raise Chef::Exceptions::Package, "Package #{@new_resource.name} not found: #{@new_resource.source}"
    end

    Chef::Log.debug("#{@new_resource} checking rpm status")
    shell_out!("rpm -qp --queryformat '%{NAME} %{VERSION}-%{RELEASE}\n' #{@new_resource.source}", :timeout => Chef::Config[:yum_timeout]).stdout.each_line do |line|
      case line
      when /([\w\d_.-]+)\s([\w\d_.-]+)/
        @current_resource.package_name($1)
        @new_resource.version($2)
      end
    end
    @candidate_version << @new_resource.version
    installed_version << @yum.installed_version(@current_resource.package_name, arch)
  else
    if @new_resource.version
      new_resource = "#{@new_resource.package_name}-#{@new_resource.version}#{yum_arch}"
    else
      new_resource = "#{@new_resource.package_name}#{yum_arch}"
    end

    Chef::Log.debug("#{@new_resource} checking yum info for #{new_resource}")

    package_name_array.each do |pkg|
      installed_version << @yum.installed_version(pkg, arch)
      @candidate_version << @yum.candidate_version(pkg, arch)
    end

  end

  if installed_version.size == 1
    @current_resource.version(installed_version[0])
    @candidate_version = @candidate_version[0]
  else
    @current_resource.version(installed_version)
  end

  Chef::Log.debug("#{@new_resource} installed version: #{installed_version || "(none)"} candidate version: " +
                  "#{@candidate_version || "(none)"}")

  @current_resource
end

#purge_package(name, version) ⇒ Object 



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# File 'lib/chef/provider/package/yum.rb', line 1237

def purge_package(name, version)
  remove_package(name, version)
end

#remove_package(name, version) ⇒ Object 



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# File 'lib/chef/provider/package/yum.rb', line 1220

def remove_package(name, version)
  if version
    remove_str = as_array(name).zip(as_array(version)).map do |x|
      "#{x.join('-')}#{yum_arch}"
    end.join(' ')
  else
    remove_str = as_array(name).map { |n| "#{n}#{yum_arch}" }.join(' ')
  end
  yum_command("yum -d0 -e0 -y#{expand_options(@new_resource.options)} remove #{remove_str}")

  if flush_cache[:after]
    @yum.reload
  else
    @yum.reload_installed
  end
end

#upgrade_package(name, version) ⇒ Object 



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# File 'lib/chef/provider/package/yum.rb', line 1216

def upgrade_package(name, version)
  install_package(name, version)
end

#yum_arch ⇒ Object

Helpers



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# File 'lib/chef/provider/package/yum.rb', line 980

def yum_arch
  arch ? ".#{arch}" : nil
end

#yum_command(command) ⇒ Object 



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# File 'lib/chef/provider/package/yum.rb', line 984

def yum_command(command)
  status = shell_out(command, {:timeout => Chef::Config[:yum_timeout]})

  # This is fun: rpm can encounter errors in the %post/%postun scripts which aren't
  # considered fatal - meaning the rpm is still successfully installed. These issue
  # cause yum to emit a non fatal warning but still exit(1). As there's currently no
  # way to suppress this behavior and an exit(1) will break a Chef run we make an
  # effort to trap these and re-run the same install command - it will either fail a
  # second time or succeed.
  #
  # A cleaner solution would have to be done in python and better hook into
  # yum/rpm to handle exceptions as we see fit.
  if status.exitstatus == 1
    status.stdout.each_line do |l|
      # rpm-4.4.2.3 lib/psm.c line 2182
      if l =~ %r{^error: %(post|postun)\(.*\) scriptlet failed, exit status \d+$}
        Chef::Log.warn("#{@new_resource} caught non-fatal scriptlet issue: \"#{l}\". Can't trust yum exit status " +
                       "so running install again to verify.")
        status = shell_out(command, {:timeout => Chef::Config[:yum_timeout]})
        break
      end
    end
  end

  if status.exitstatus > 0
    command_output = "STDOUT: #{status.stdout}\nSTDERR: #{status.stderr}"
    raise Chef::Exceptions::Exec, "#{command} returned #{status.exitstatus}:\n#{command_output}"
  end
end