def get_package_requirements(packages):
"""
Returns a dict with two keys - systemRestart, serviceRestart - with package lists as their values
@param packages: list of package names -> list_of_strings
>>> lu = pisilinux.api.list_upgrades()
>>> requirements = pisilinux.api.get_package_requirements(lu)
>>> print requirements
>>> { "systemRestart":["kernel", "module-alsa-driver"], "serviceRestart":["mysql-server", "memcached", "postfix"] }
"""
actions = ("systemRestart", "serviceRestart")
requirements = dict((action, []) for action in actions)
installdb = pisilinux.db.installdb.InstallDB()
packagedb = pisilinux.db.packagedb.PackageDB()
for i_pkg in packages:
try:
pkg = packagedb.get_package(i_pkg)
except Exception: #FIXME: Should catch RepoItemNotFound exception
pass
version, release, build = installdb.get_version(i_pkg)
pkg_actions = pkg.get_update_actions(release)
for action_name in pkg_actions:
if action_name in actions:
requirements[action_name].append(pkg.name)
return requirements
def package_graph(A, packagedb, ignore_installed = False, reverse=False):
"""Construct a package relations graph.
Graph will contain all dependencies of packages A, if ignore_installed
option is True, then only uninstalled deps will be added.
"""
ctx.ui.debug('A = %s' % str(A))
# try to construct a pisilinux graph of packages to
# install / reinstall
G_f = pgraph.PGraph(packagedb) # construct G_f
# find the "install closure" graph of G_f by package
# set A using packagedb
for x in A:
G_f.add_package(x)
B = A
#state = {}
while len(B) > 0:
Bp = set()
for x in B:
pkg = packagedb.get_package(x)
#print pkg
if reverse:
for name,dep in packagedb.get_rev_deps(x):
if ignore_installed:
if dep.satisfied_by_installed():
continue
if not name in G_f.vertices():
Bp.add(name)
G_f.add_dep(name, dep)
else:
for dep in pkg.runtimeDependencies():
if ignore_installed:
if dep.satisfied_by_installed():
continue
if not dep.package in G_f.vertices():
Bp.add(str(dep.package))
G_f.add_dep(x, dep)
B = Bp
return G_f