def _AutoSave(self):
"""For each follower that has enabled auto-save for this viewpoint, trigger save_photos
operation that will save the shared photos to their default viewpoint.
"""
# Get ids of all the source episodes that will be provided to save_photos.
source_ep_ids = [ep_dict['new_episode_id'] for ep_dict in self._ep_dicts]
for follower in self._followers:
# Skip follower if he did not mark this viewpoint for auto-saving.
if not follower.ShouldAutoSave():
continue
# Skip follower if he is removed from the conversation.
if follower.IsRemoved():
continue
follower_user = yield gen.Task(User.Query, self._client, follower.user_id, None)
# Skip follower if he is the sharer, and is sharing only episodes from his default viewpoint.
if follower_user.user_id == self._user_id:
if all(source_episode.viewpoint_id == follower_user.private_vp_id
for source_episode, posts in self._source_ep_posts_list):
continue
# Allocate ids for save_photos operation and activity.
first_id = yield gen.Task(User.AllocateAssetIds, self._client, follower.user_id, 2)
op_id = Operation.ConstructOperationId(follower_user.webapp_dev_id, first_id)
activity_id = Activity.ConstructActivityId(self._act_dict['timestamp'],
follower_user.webapp_dev_id,
first_id + 1)
# Generate ids for any target episodes that don't already exist.
target_ep_ids = yield ViewfinderOperation._AllocateTargetEpisodeIds(self._client,
follower.user_id,
follower_user.webapp_dev_id,
follower_user.private_vp_id,
source_ep_ids)
# Create target episode dicts expected by the SavePhotos op.
target_eps_list = []
for ep_dict, target_ep_id in zip(self._ep_dicts, target_ep_ids):
target_eps_list.append({'existing_episode_id': ep_dict['new_episode_id'],
'new_episode_id': target_ep_id,
'photo_ids': ep_dict['photo_ids']})
save_photos_dict = {'headers': {'op_id': op_id, 'op_timestamp': self._op.timestamp},
'user_id': follower.user_id,
'activity': {'activity_id': activity_id, 'timestamp': self._act_dict['timestamp']},
'episodes': target_eps_list}
# Create the save_photos op for this user. Use the raw DBClient instance since self._client
# is wrapped with OpMgrDBClient.
yield gen.Task(Operation.CreateAndExecute,
DBClient.Instance(),
follower.user_id,
follower_user.webapp_dev_id,
'SavePhotosOperation.Execute',
save_photos_dict)
def _AutoSave(self):
"""For each follower that has enabled auto-save for this viewpoint, trigger save_photos
operation that will save the shared photos to their default viewpoint.
"""
# Get ids of all the source episodes that will be provided to save_photos.
source_ep_ids = [
ep_dict['new_episode_id'] for ep_dict in self._ep_dicts
]
for follower in self._followers:
# Skip follower if he did not mark this viewpoint for auto-saving.
if not follower.ShouldAutoSave():
continue
# Skip follower if he is removed from the conversation.
if follower.IsRemoved():
continue
follower_user = yield gen.Task(User.Query, self._client,
follower.user_id, None)
# Skip follower if he is the sharer, and is sharing only episodes from his default viewpoint.
if follower_user.user_id == self._user_id:
if all(source_episode.viewpoint_id ==
follower_user.private_vp_id for source_episode, posts in
self._source_ep_posts_list):
continue
# Allocate ids for save_photos operation and activity.
first_id = yield gen.Task(User.AllocateAssetIds, self._client,
follower.user_id, 2)
op_id = Operation.ConstructOperationId(follower_user.webapp_dev_id,
first_id)
activity_id = Activity.ConstructActivityId(
self._act_dict['timestamp'], follower_user.webapp_dev_id,
first_id + 1)
# Generate ids for any target episodes that don't already exist.
target_ep_ids = yield ViewfinderOperation._AllocateTargetEpisodeIds(
self._client, follower.user_id, follower_user.webapp_dev_id,
follower_user.private_vp_id, source_ep_ids)
# Create target episode dicts expected by the SavePhotos op.
target_eps_list = []
for ep_dict, target_ep_id in zip(self._ep_dicts, target_ep_ids):
target_eps_list.append({
'existing_episode_id':
ep_dict['new_episode_id'],
'new_episode_id':
target_ep_id,
'photo_ids':
ep_dict['photo_ids']
})
save_photos_dict = {
'headers': {
'op_id': op_id,
'op_timestamp': self._op.timestamp
},
'user_id': follower.user_id,
'activity': {
'activity_id': activity_id,
'timestamp': self._act_dict['timestamp']
},
'episodes': target_eps_list
}
# Create the save_photos op for this user. Use the raw DBClient instance since self._client
# is wrapped with OpMgrDBClient.
yield gen.Task(Operation.CreateAndExecute, DBClient.Instance(),
follower.user_id, follower_user.webapp_dev_id,
'SavePhotosOperation.Execute', save_photos_dict)
def _CreateSaveEpisodeDicts(self):
"""Creates a list of dicts describing the source and target episodes of the save. The
episode dicts passed in the save_photos request are combined with episodes in any of the
viewpoints passed in the save_photos request. Returns the list.
"""
# Query episode ids from viewpoints given in the request, but skip those that are already in the request.
vp_ep_ids = []
skip_vp_ep_ids = set(ep_dict['existing_episode_id'] for ep_dict in self._ep_dicts)
# Query photo_ids from viewpoint episodes.
ep_ph_ids = {}
@gen.coroutine
def _VisitPosts(photo_ids, post):
photo_ids.append(post.photo_id)
@gen.coroutine
def _VisitEpisodeKeys(episode_key):
episode_id = episode_key.hash_key
# Get list of episodes in the viewpoint that need a target episode id discovered/generated.
if episode_id not in skip_vp_ep_ids:
vp_ep_ids.append(episode_id)
# For each episode in the viewpoint, get the complete list of photo ids in that episode.
photo_ids = []
yield gen.Task(Post.VisitRange, self._client, episode_id, None, None, partial(_VisitPosts, photo_ids))
ep_ph_ids[episode_id] = photo_ids
tasks = []
for viewpoint_id in set(self._viewpoint_ids):
query_expr = ('episode.viewpoint_id={id}', {'id': viewpoint_id})
tasks.append(gen.Task(Episode.VisitIndexKeys, self._client, query_expr, _VisitEpisodeKeys))
yield tasks
# Allocate target ids for all episodes not given by the client.
target_ep_ids = yield ViewfinderOperation._AllocateTargetEpisodeIds(self._client,
self._user.user_id,
self._user.webapp_dev_id,
self._user.private_vp_id,
vp_ep_ids)
# Create save dicts for each of the viewpoint episodes to save.
save_ep_dicts = {}
for source_ep_id, target_ep_id in zip(vp_ep_ids, target_ep_ids):
save_ep_dicts[target_ep_id] = {'existing_episode_id': source_ep_id,
'new_episode_id': target_ep_id,
'photo_ids': ep_ph_ids[source_ep_id]}
# Now add the save dicts from the request, validating rules as we go.
for ep_dict in self._ep_dicts:
existing_ep_dict = save_ep_dicts.get(ep_dict['new_episode_id'], None)
if existing_ep_dict is not None:
if ep_dict['existing_episode_id'] != existing_ep_dict['existing_episode_id']:
raise InvalidRequestError('Cannot save episodes "%s" and "%s" to same target episode "%s".' %
(existing_ep_dict['existing_episode_id'],
ep_dict['existing_episode_id'],
ep_dict['new_episode_id']))
existing_ep_dict['photo_ids'].extend(ep_dict['photo_ids'])
existing_ep_dict['photo_ids'] = sorted(set(existing_ep_dict['photo_ids']))
else:
photo_ids = ep_dict['photo_ids']
if ep_dict['existing_episode_id'] in ep_ph_ids:
photo_ids.extend(ep_ph_ids[ep_dict['existing_episode_id']])
save_ep_dicts[ep_dict['new_episode_id']] = {'existing_episode_id': ep_dict['existing_episode_id'],
'new_episode_id': ep_dict['new_episode_id'],
'photo_ids': sorted(set(photo_ids))}
save_ep_dicts = [ep_dict for ep_dict in save_ep_dicts.itervalues()]
save_ep_dicts.sort(key=itemgetter('new_episode_id'))
raise gen.Return(save_ep_dicts)
