def set_up_new_course(request):
# type: (http.HttpRequest) -> http.HttpResponse
if request.method == "POST":
form = CourseCreationForm(request.POST)
if form.is_valid():
new_course = form.save(commit=False)
from course.content import get_course_repo_path
repo_path = get_course_repo_path(new_course)
try:
import os
os.makedirs(repo_path)
repo = None
try:
with transaction.atomic():
repo = Repo.init(repo_path)
client, remote_path = \
get_dulwich_client_and_remote_path_from_course(
new_course)
remote_refs = client.fetch(remote_path, repo)
if remote_refs is None:
raise RuntimeError(
_("No refs found in remote repository"
" (i.e. no master branch, no HEAD). "
"This looks very much like a blank repository. "
"Please create course.yml in the remote "
"repository before creating your course."))
transfer_remote_refs(repo, remote_refs)
new_sha = repo[b"HEAD"] = remote_refs[b"HEAD"]
vrepo = repo
if new_course.course_root_path:
from course.content import SubdirRepoWrapper
vrepo = SubdirRepoWrapper(
vrepo, new_course.course_root_path)
from course.validation import validate_course_content
validate_course_content( # type: ignore
vrepo, new_course.course_file,
new_course.events_file, new_sha)
del vrepo
new_course.active_git_commit_sha = new_sha.decode()
new_course.save()
# {{{ set up a participation for the course creator
part = Participation()
part.user = request.user
part.course = new_course
part.status = participation_status.active
part.save()
part.roles.set([
# created by signal handler for course creation
ParticipationRole.objects.get(
course=new_course, identifier="instructor")
])
# }}}
messages.add_message(
request, messages.INFO,
_("Course content validated, creation "
"succeeded."))
except:
# Don't coalesce this handler with the one below. We only want
# to delete the directory if we created it. Trust me.
# Work around read-only files on Windows.
# https://docs.python.org/3.5/library/shutil.html#rmtree-example
import os
import stat
import shutil
# Make sure files opened for 'repo' above are actually closed.
if repo is not None: # noqa
repo.close() # noqa
def remove_readonly(func, path, _): # noqa
"Clear the readonly bit and reattempt the removal"
os.chmod(path, stat.S_IWRITE)
func(path)
try:
shutil.rmtree(repo_path, onerror=remove_readonly)
except OSError:
messages.add_message(
request, messages.WARNING,
ugettext("Failed to delete unused "
"repository directory '%s'.") % repo_path)
raise
except Exception as e:
from traceback import print_exc
print_exc()
messages.add_message(
request, messages.ERROR,
string_concat(_("Course creation failed"),
": %(err_type)s: %(err_str)s") % {
"err_type": type(e).__name__,
"err_str": str(e)
})
else:
return redirect("relate-course_page", new_course.identifier)
else:
form = CourseCreationForm()
return render(request, "generic-form.html", {
"form_description": _("Set up new course"),
"form": form
})
def set_up_new_course(request):
if not request.user.is_staff:
raise PermissionDenied(_("only staff may create courses"))
if request.method == "POST":
form = CourseCreationForm(request.POST)
if form.is_valid():
new_course = form.save(commit=False)
from course.content import get_course_repo_path
repo_path = get_course_repo_path(new_course)
try:
import os
os.makedirs(repo_path)
try:
with transaction.atomic():
from dulwich.repo import Repo
repo = Repo.init(repo_path)
client, remote_path = \
get_dulwich_client_and_remote_path_from_course(
new_course)
remote_refs = client.fetch(remote_path, repo)
new_sha = repo["HEAD"] = remote_refs["HEAD"]
vrepo = repo
if new_course.course_root_path:
from course.content import SubdirRepoWrapper
vrepo = SubdirRepoWrapper(
vrepo, new_course.course_root_path)
from course.validation import validate_course_content
validate_course_content(vrepo, new_course.course_file,
new_course.events_file,
new_sha)
del repo
del vrepo
new_course.valid = True
new_course.active_git_commit_sha = new_sha
new_course.save()
# {{{ set up a participation for the course creator
part = Participation()
part.user = request.user
part.course = new_course
part.role = participation_role.instructor
part.status = participation_status.active
part.save()
# }}}
messages.add_message(
request, messages.INFO,
_("Course content validated, creation "
"succeeded."))
except:
# Don't coalesce this handler with the one below. We only want
# to delete the directory if we created it. Trust me.
# Work around read-only files on Windows.
# https://docs.python.org/3.5/library/shutil.html#rmtree-example
import os
import stat
import shutil
# Make sure files opened for 'repo' above are actually closed.
import gc
gc.collect()
def remove_readonly(func, path, _): # noqa
"Clear the readonly bit and reattempt the removal"
os.chmod(path, stat.S_IWRITE)
func(path)
try:
shutil.rmtree(repo_path, onerror=remove_readonly)
except OSError:
messages.add_message(
request, messages.WARNING,
ugettext("Failed to delete unused "
"repository directory '%s'.") % repo_path)
raise
except Exception as e:
from traceback import print_exc
print_exc()
messages.add_message(
request, messages.ERROR,
string_concat(_("Course creation failed"),
": %(err_type)s: %(err_str)s") % {
"err_type": type(e).__name__,
"err_str": str(e)
})
else:
return redirect("relate-course_page", new_course.identifier)
else:
form = CourseCreationForm()
return render(request, "generic-form.html", {
"form_description": _("Set up new course"),
"form": form
})