def update_tree(self,tree_dict):
try:
tree_dict = self.merged_tree(tree_dict)
except:
return False, ['invalid_parameters']
if tree_dict['tree_name'] is None:
return False, ['tree_not_found']
if tree_dict['moderatorname'] is None:
return False, ['unauthenticated']
author_info = UserInfo.get_by_username(tree_dict['moderatorname'])
if author_info is None or not self.is_user_info_current(author_info):
return False, ['unauthenticated']
if author_info.username is None:
return False, ['invalid_user']
tree = Tree.get_by_name(tree_dict['tree_name'])
tree.conventions = tree_dict['conventions']
tree.link_moderator_only = tree_dict['link_moderator_only']
tree.link_max = tree_dict['link_max']
tree.link_prompt = tree_dict['link_prompt']
tree.content_moderator_only = tree_dict['content_moderator_only']
tree.content_max = tree_dict['content_max']
tree.content_prompt = tree_dict['content_prompt']
tree.single_thread = tree_dict['single_thread']
tree.branch_max = tree_dict['branch_max']
tree.put()
notification = Notification()
notification.from_username = tree.moderatorname
#only set the to_username when a different user is performing the action
notification.notification_type = 'edit_tree'
notification.tree_name = tree_dict['tree_name']
notification.put()
return True, tree
def delete_branch(self,authorname,urlsafe_key):
userinfo = UserInfo.get_by_username(authorname)
if userinfo is None or not self.is_user_info_current(userinfo):
return False, [ 'unauthenticated' ]
branch = ndb.Key(urlsafe=urlsafe_key).get()
if len(branch.children()) != 0:
return False, [ 'not_empty' ]
tree = Tree.get_by_name(branch.tree_name)
if branch.authorname != authorname and tree.moderatorname != authorname:
return False, [ 'not_author' ]
branch.detached_parent_branch = branch.parent_branch
branch.parent_branch = None
branch.put();
branch.detached_parent_branch.get().empty_children_cache()
return True, None
def save_branch(self,authorname,parent_urlsafe_key,link,content):
userinfo = UserInfo.get_by_username(authorname)
if userinfo is None or not self.is_user_info_current(userinfo):
return False, [ 'unauthenticated' ]
branch = Branch()
branch.authorname = authorname
parent_key = ndb.Key(urlsafe=parent_urlsafe_key)
parent_branch = parent_key.get()
if parent_branch is None:
return False, ['parent_branch_not_found']
branch.tree_name = parent_branch.tree_name
tree = Tree.get_by_name(parent_branch.tree_name)
if tree is None:
return False, ['tree_not_found']
if tree.moderatorname == authorname or not tree.link_moderator_only:
branch.link = link
else:
branch.link = ""
if tree.moderatorname == authorname or not tree.content_moderator_only:
branch.content = content
else:
branch.content = ""
errors = self.validate_branch(tree, branch,authorname)
#currently there is a db lock on unique links
#eventually we should have a memcache lcok
authored_branch_count = 0
branchs = parent_branch.children()
if tree.single_thread and parent_branch.authorname == authorname:
errors.append('has_single_thread_parent_branch')
if tree.single_thread and len(branchs) > 0:
errors.append('has_single_thread_branch')
for branch_branch in branchs:
if branch_branch.link == branch.link:
errors.append('has_identical_link')
if branch_branch.authorname == authorname:
authored_branch_count += 1
if tree.branch_max > 0 and tree.branch_max <= authored_branch_count:
errors.append('has_branches')
if len(errors) == 0:
branch.revision = 0
branch.parent_branch = parent_key
branch.parent_branch_authorname = parent_branch.authorname
branch.put()
self.create_branch_version(branch)
parent_branch.append_child(branch)
notification = Notification()
notification.from_username = branch.authorname
if branch.authorname != parent_branch.authorname:
notification.to_username = parent_branch.authorname
notification.notification_type = 'new_branch'
notification.branch = branch.key
notification.branch_link = branch.link
notification.tree_name = branch.tree_name
notification.put()
return True, branch
else:
return False, errors
def update_branch(self,authorname,urlsafe_key,link,content):
userinfo = UserInfo.get_by_username(authorname)
if userinfo is None or not self.is_user_info_current(userinfo):
return False, [ 'unauthenticated' ]
branch = ndb.Key(urlsafe=urlsafe_key).get()
tree = Tree.get_by_name(branch.tree_name)
if tree is None:
return False, [ 'tree_not_found' ]
if branch.authorname != authorname and tree.moderatorname != authorname:
return False, [ 'not_author' ]
if tree.moderatorname == authorname or not tree.link_moderator_only:
branch.link = link
if tree.moderatorname == authorname or not tree.content_moderator_only:
branch.content = content
errors = self.validate_branch(tree, branch,authorname)
#Comment on thread safety:
#Branch creation will be a VERY frequent operation. Multiple branchs with identical links
#Isn't an application error, just an annoyance for the user. So we allow this to occur
#without a lock in place
parent_branch = None
if branch.parent_branch is not None:
parent_branch = branch.parent_branch.get();
branchs = parent_branch.children()
for branch_branch in branchs:
if branch_branch.link == branch.link and branch.key != branch_branch.key:
errors.append('has_identical_link')
if len(errors) == 0:
if branch.revision is None:
branch.revision = 1
else:
branch.revision = branch.revision + 1
branch.put()
self.create_branch_version(branch)
if parent_branch is not None:
parent_branch.update_child(branch)
notification = Notification()
notification.from_username = authorname
#only set the to_username when a different user is performing the action
if branch.authorname != authorname:
notification.to_username = branch.authorname
notification.notification_type = 'edit_branch'
notification.branch = branch.key
notification.branch_link = branch.link
notification.tree_name = branch.tree_name
notification.put()
return True, branch
else:
return False, errors
