PackageKitGlib example

#!/usr/bin/python

from gi.repository import PackageKitGlib

# this fails in install_packages(), as the Epson archive is not actually signed
#repo = 'deb http://download.ebz.epson.net/dsc/op/stable/debian lsb3.2 main'
#repo_gpg_id = '8AA65D56'
#package = 'epson-inkjet-printer-px-402a'

# this works
repo = 'deb http://ppa.launchpad.net/picsaw-team/ppa/ubuntu/ quantal main'
repo_gpg_id = '220B9F10'
package = 'picsaw'

# progress callback
# http://www.packagekit.org/gtk-doc/PkProgress.html
def progress(progress, type, user_data):
    print '  ', type.value_name, 'package:', progress.props.package_id, ':', progress.props.percentage, '%'

# get PackageKit client
pk = PackageKitGlib.Client()

# install repository key
res = pk.install_signature(PackageKitGlib.SigTypeEnum.GPG, repo_gpg_id, '',
                           None, progress, None)
print '----------- install_signature result code:', res.get_exit_code()
assert res.get_exit_code() == PackageKitGlib.ExitEnum.SUCCESS

# add repository; see
# http://www.packagekit.org/gtk-doc/PackageKit-pk-client-sync.html#pk-client-repo-enable
res = pk.repo_enable(repo, True, None, progress, None)
print '----------- repo_enable result code:', res.get_exit_code()
assert res.get_exit_code() == PackageKitGlib.ExitEnum.SUCCESS

# download/update the indexes
res = pk.refresh_cache(False, None, progress, None)
print '----------- refresh_cache result code:', res.get_exit_code()
assert res.get_exit_code() == PackageKitGlib.ExitEnum.SUCCESS

# map package name to PackageKit ID; do not print progress here, it's fast
res = pk.resolve(PackageKitGlib.FilterEnum.NONE, [package],
                 None, lambda p, t, d: True, None)
print '----------- resolve result code:', res.get_exit_code()
assert res.get_exit_code() == PackageKitGlib.ExitEnum.SUCCESS
package_ids = res.get_package_array()
assert len(package_ids) > 0

# install the first match
package_id = package_ids[0].get_id()
print '-------- installing:', package_id

# install package
res = pk.install_packages(True, [package_id], None, progress, None)
print '----------- install_packages result code:', res.get_exit_code()
assert res.get_exit_code() == PackageKitGlib.ExitEnum.SUCCESS