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import os
import subprocess
from devbot import config
from devbot import distro
from devbot import state
from devbot import utils
from devbot import xvfb
_checkers = {}
def check(remove=False, update=False, test=False, interactive=True,
lazy=False):
if lazy:
if state.system_check_is_unchanged():
return True
package_manager = \
distro.get_package_manager(test=test, interactive=interactive)
distro.print_distro_info()
distro_name = distro.get_distro_info().name
packages = config.load_packages()
checks = config.load_prerequisites()
if not _run_checks(package_manager, checks, packages):
return False
xvfb_proc, orig_display = xvfb.start()
if not _run_checks(package_manager, config.load_checks(), packages):
return False
xvfb.stop(xvfb_proc, orig_display)
print "All the required dependencies are installed."
if update:
package_manager.update()
if remove:
_remove_packages(package_manager, packages)
state.system_check_touch()
return True
def _check_binary(check):
return subprocess.call(["which", check],
stdout=utils.devnull,
stderr=subprocess.STDOUT)
_checkers["binary"] = _check_binary
def _check_pkgconfig(check):
return subprocess.call(["pkg-config", "--exists", check]) == 1
_checkers["pkgconfig"] = _check_pkgconfig
def _check_python(check):
return subprocess.call(["python", "-c", check],
stdout=utils.devnull,
stderr=subprocess.STDOUT) == 1
_checkers["python"] = _check_python
def _check_gtkmodule(check):
# Not sure we can do better than this, the gtkmodule stuff is private
missing = True
for libdir in config.system_lib_dirs:
if os.path.exists("%s/gtk-2.0/modules/lib%s.so" % (libdir, check)):
missing = False
return missing
_checkers["gtkmodule"] = _check_gtkmodule
def _check_include(check):
return not os.path.exists(os.path.join("/usr/include/", check))
_checkers["include"] = _check_include
def _check_dbus(check):
return not os.path.exists("/usr/share/dbus-1/services/%s.service" % check)
_checkers["dbus"] = _check_dbus
def _check_metacity_theme(check):
theme = "/usr/share/themes/%s/metacity-1/metacity-theme-3.xml"
return not os.path.exists(theme % check)
_checkers["metacity-theme"] = _check_metacity_theme
def _check_gstreamer(check, version):
missing = True
for libdir in config.system_lib_dirs:
if os.path.exists("%s/gstreamer-%s/libgst%s.so" %
(libdir, version, check)):
missing = False
return missing
def _check_gstreamer_0_10(check):
return _check_gstreamer(check, "0.10")
_checkers["gstreamer-0.10"] = _check_gstreamer_0_10
def _check_gstreamer_1_0(check):
return _check_gstreamer(check, "1.0")
_checkers["gstreamer-1.0"] = _check_gstreamer_1_0
def _print_checks(checks):
for check in checks:
print "[%s] %s" % (check["checker"], check["check"])
def _eval_check_if(check):
if "check_if" not in check:
return True
distro_info = distro.get_distro_info()
globals = {"distro": "%s-%s" % (distro_info.name, distro_info.version)}
print eval(check["check_if"], globals)
return eval(check["check_if"], globals) == "True"
def _run_checks(package_manager, checks, packages):
distro_info = distro.get_distro_info()
failed_checks = []
packages_not_found = []
to_install = []
for check in checks:
if not _eval_check_if(check):
continue
checker = _checkers[check["checker"]]
if checker(check["check"]):
try:
packages_for_check = packages[check["name"]][distro_info.name]
except KeyError:
packages_for_check = []
packages_not_found.append(check)
for package in packages_for_check:
if package not in to_install:
to_install.append(package)
failed_checks.append(check)
if distro_info.supported:
if packages_not_found:
print "\nPackages not found for"
_print_checks(packages_not_found)
return False
if to_install:
package_manager.install_packages(to_install)
elif failed_checks:
print "Failed checks\n"
_print_checks(failed_checks)
if to_install:
print "\nYou might try to install the following packages\n"
print " ".join(to_install)
return False
return True
def _remove_packages(package_manager, packages):
distro_name = distro.get_distro_info().name
to_keep = []
for package_info in packages.values():
if distro_name in package_info:
for package in package_info[distro_name]:
if package not in to_keep:
to_keep.append(package)
try:
to_keep = package_manager.find_with_deps(to_keep)
except NotImplementedError:
return
all = package_manager.find_all()
to_remove = []
for package in all:
if package not in to_keep:
to_remove.append(package)
if to_remove:
package_manager.remove_packages(to_remove)
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