def wrap_in_union_fs_func(project, *args, **kwargs):
"""
Wrap the func in the UnionFS mount stack.
We make sure that the mount points all exist and stack up the
directories for the unionfs. All directories outside of the default
build environment are tracked for deletion.
"""
container = project.container
if container is None or in_container():
return func(project, *args, **kwargs)
build_dir = local.path(project.builddir)
LOG.debug("UnionFS - Project builddir: %s", project.builddir)
if __unionfs_is_active(root=build_dir):
LOG.debug(
"UnionFS already active in %s, nesting not supported.",
build_dir)
return func(project, *args, **kwargs)
ro_dir = local.path(container.local)
rw_dir = build_dir / rw
un_dir = build_dir / union
LOG.debug("UnionFS - RW: %s", rw_dir)
unionfs_cmd = __unionfs_set_up(ro_dir, rw_dir, un_dir)
project_builddir_bak = project.builddir
project.builddir = un_dir
proc = unionfs_cmd.popen()
while (not __unionfs_is_active(root=un_dir)) and \
(proc.poll() is None):
pass
ret = None
if proc.poll() is None:
try:
with local.cwd(un_dir):
ret = func(project, *args, **kwargs)
finally:
project.builddir = project_builddir_bak
from signal import SIGINT
is_running = proc.poll() is None
while __unionfs_is_active(root=un_dir) and is_running:
try:
proc.send_signal(SIGINT)
proc.wait(timeout=3)
except subprocess.TimeoutExpired:
proc.kill()
is_running = False
LOG.debug("Unionfs shut down.")
if __unionfs_is_active(root=un_dir):
raise UnmountError()
return ret
def __str__(self, indent=0):
sub_actns = [a.__str__(indent + 1) for a in self.actions]
sub_actns = "\n".join(sub_actns)
if container.in_container():
return textwrap.indent("* Running inside container:\n" + sub_actns,
indent * " ")
if self.requires_redirect():
return textwrap.indent(
"* Continue inside container:\n" + sub_actns, indent * " ")
return textwrap.indent("* Running without container:\n" + sub_actns,
indent * " ")
def requires_redirect(self):
project = self.obj
return not container.in_container() and (project.container is not None)