def info_name(package_name, useinstalldb=False):
"""Fetch package information for the given package."""
installdb = pisilinux.db.installdb.InstallDB()
packagedb = pisilinux.db.packagedb.PackageDB()
if useinstalldb:
package = installdb.get_package(package_name)
repo = None
else:
package, repo = packagedb.get_package_repo(package_name)
metadata = pisilinux.metadata.MetaData()
metadata.package = package
#FIXME: get it from sourcedb if available
metadata.source = None
#TODO: fetch the files from server if possible (wow, you maniac -- future exa)
if useinstalldb and installdb.has_package(package.name):
try:
files = installdb.get_files(package.name)
except pisilinux.Error as e:
ctx.ui.warning(e)
files = None
else:
files = None
return metadata, files, repo
def snapshot():
"""
Takes snapshot of the system packages. The snapshot is only a record of which packages are currently
installed. The record is kept by pisilinux history mechanism as it works automatically on install, remove
and upgrade operations.
"""
installdb = pisilinux.db.installdb.InstallDB()
historydb = pisilinux.db.historydb.HistoryDB()
historydb.create_history("snapshot")
li = installdb.list_installed()
progress = ctx.ui.Progress(len(li))
processed = 0
for name in installdb.list_installed():
package = installdb.get_package(name)
historydb.add_package(pkgBefore=package, operation="snapshot")
# Save changed config files of the package in snapshot
for f in installdb.get_files(name).list:
if f.type == "config" and pisilinux.util.config_changed(f):
fpath = pisilinux.util.join_path(ctx.config.dest_dir(), f.path)
historydb.save_config(name, fpath)
processed += 1
ctx.ui.display_progress(operation = "snapshot",
percent = progress.update(processed),
info = _("Taking snapshot of the system"))
historydb.update_history()