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require 'puppet/provider/package'
Puppet::Type.type(:package).provide :dpkg, :parent => Puppet::Provider::Package do
desc "Package management via ``dpkg``. Because this only uses ``dpkg``
and not ``apt``, you must specify the source of any packages you want
to manage."
has_feature :holdable
commands :dpkg => "/usr/bin/dpkg"
commands :dpkg_deb => "/usr/bin/dpkg-deb"
commands :dpkgquery => "/usr/bin/dpkg-query"
def self.instances
packages = []
# list out all of the packages
cmd = "#{command(:dpkgquery)} -W --showformat '${Status} ${Package} ${Version}\\n'"
Puppet.debug "Executing '%s'" % cmd
execpipe(cmd) do |process|
# our regex for matching dpkg output
regex = %r{^(\S+) +(\S+) +(\S+) (\S+) (\S*)$}
fields = [:desired, :error, :status, :name, :ensure]
hash = {}
# now turn each returned line into a package object
process.each { |line|
if hash = parse_line(line)
packages << new(hash)
end
}
end
return packages
end
self::REGEX = %r{^(\S+) +(\S+) +(\S+) (\S+) (\S*)$}
self::FIELDS = [:desired, :error, :status, :name, :ensure]
def self.parse_line(line)
if match = self::REGEX.match(line)
hash = {}
self::FIELDS.zip(match.captures) { |field,value|
hash[field] = value
}
hash[:provider] = self.name
if hash[:status] == 'not-installed'
hash[:ensure] = :purged
elsif ['config-files', 'half-installed', 'unpacked', 'half-configured'].include?(hash[:status])
hash[:ensure] = :absent
end
if hash[:desired] == 'hold'
hash[:ensure] = :held
end
else
Puppet.warning "Failed to match dpkg-query line %s" % line.inspect
return nil
end
return hash
end
def install
unless file = @resource[:source]
raise ArgumentError, "You cannot install dpkg packages without a source"
end
args = []
# We always unhold when installing to remove any prior hold.
self.unhold
if @resource[:configfiles] == :keep
args << '--force-confold'
else
args << '--force-confnew'
end
args << '-i' << file
dpkg(*args)
end
def update
self.install
end
# Return the version from the package.
def latest
output = dpkg_deb "--show", @resource[:source]
matches = /^(\S+)\t(\S+)$/.match(output).captures
unless matches[0].match( Regexp.escape(@resource[:name]) )
warning "source doesn't contain named package, but %s" % matches[0]
end
matches[1]
end
def query
packages = []
fields = [:desired, :error, :status, :name, :ensure]
hash = {}
# list out our specific package
begin
output = dpkgquery("-W", "--showformat",
'${Status} ${Package} ${Version}\\n', @resource[:name]
)
rescue Puppet::ExecutionFailure
# dpkg-query exits 1 if the package is not found.
return {:ensure => :purged, :status => 'missing',
:name => @resource[:name], :error => 'ok'}
end
hash = self.class.parse_line(output) || {:ensure => :absent, :status => 'missing', :name => @resource[:name], :error => 'ok'}
if hash[:error] != "ok"
raise Puppet::Error.new(
"Package %s, version %s is in error state: %s" %
[hash[:name], hash[:ensure], hash[:error]]
)
end
return hash
end
def uninstall
dpkg "-r", @resource[:name]
end
def purge
dpkg "--purge", @resource[:name]
end
def hold
self.install
begin
Tempfile.open('puppet_dpkg_set_selection') { |tmpfile|
tmpfile.write("#{@resource[:name]} hold\n")
tmpfile.flush
execute([:dpkg, "--set-selections"], :stdinfile => tmpfile.path.to_s)
}
end
end
def unhold
begin
Tempfile.open('puppet_dpkg_set_selection') { |tmpfile|
tmpfile.write("#{@resource[:name]} install\n")
tmpfile.flush
execute([:dpkg, "--set-selections"], :stdinfile => tmpfile.path.to_s)
}
end
end
end
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