def create(self, request, workspace_id):
user = get_user_authentication(request)
workspace = get_object_or_404(WorkSpace, id=workspace_id)
if not user.is_staff and workspace.creator != user:
return HttpResponseForbidden()
# Gets all needed parameters from request
if 'json' in request.POST:
json = simplejson.loads(request.POST['json'])
else:
return HttpResponseBadRequest(_(u'JSON parameter expected'))
try:
new_channels = json['inOutList']
old_channels = InOut.objects.filter(
workspace_variable__workspace=workspace)
# Mapping between provisional ids and database-generated ids!!!
id_mapping = {}
# Hash for mapping External Channels URLs and IDs
rchannels_urls_to_ids = []
# A list of the channels removed by the user
# Initially, all channels are considered to be deleted, and they
# will be removed from this list if they appear in the inOuList
# argument
channelsDeletedByUser = old_channels[::1]
# Disconnect all channels in the workspace
for old_channel in old_channels:
# Deleting the old relationships between channels
# First delete the relationships where old_channel is the input
rel_old_channels = RelatedInOut.objects.filter(
in_inout=old_channel)
for channel_delete in rel_old_channels:
channel_delete.delete()
# And then the relationships where old_channel is the output
rel_old_channels = RelatedInOut.objects.filter(
out_inout=old_channel)
for channel_delete in rel_old_channels:
channel_delete.delete()
if old_channel.remote_subscription:
old_channel.remote_subscription.delete()
# Adding channels recreating JSON structure!
for channel_id in new_channels:
new_channel_data = new_channels[channel_id]
# Remote subscriptions!
remote_subscription = None
if new_channel_data.get('remote_subscription', None):
op_code = unicode(
new_channel_data['remote_subscription']['op_code'])
url = new_channel_data['remote_subscription']['url']
if op_code != '0':
remote_channel, created = RemoteChannel.objects.get_or_create(
url=url)
data = dict()
data['url'] = url
data['id'] = remote_channel.id
rchannels_urls_to_ids.append(data)
remote_subscription = RemoteSubscription(
operation_code=op_code,
remote_channel=remote_channel)
remote_subscription.save()
if new_channel_data.get('provisional_id', False):
# It's necessary to create a new channel from scratch
filter = None
filter_params = None
if new_channel_data.get('filter_id', ''):
filter = Filter.objects.get(
id=new_channel_data['filter_id'])
filter_params = new_channel_data['filter_params']
channel = createChannel(workspace,
new_channel_data['name'], filter,
filter_params, remote_subscription)
# A channel has been generated. It's necessary to correlate provisional and final ids!
id_mapping[new_channel_data['id']] = {
'new_id': channel.id,
'new_wv_id': channel.workspace_variable.id
}
else:
channel = InOut.objects.get(id=channel_id)
workspace_variable = channel.workspace_variable
workspace_variable.abstract_variable.name = new_channel_data[
'name']
workspace_variable.abstract_variable.save()
filter = None
filter_params = ''
if new_channel_data.get('filter', ''):
filter = Filter.objects.get(
id=new_channel_data['filter'])
filter_params = json_encode(
new_channel_data['filter_params'])
channel.remote_subscription = remote_subscription
channel.name = new_channel_data['name']
channel.filter = filter
channel.filter_param_values = filter_params
channel.friend_code = ""
channel.save()
channelsDeletedByUser.remove(channel)
# In connections
# InOut out connections will be created later
for inputId in new_channel_data.get('ins', []):
connectable = In.objects.get(id=inputId)
connectable.inouts.add(channel)
connectable.save()
# Out connections
# InOut out connections will be created later
for outputId in new_channel_data.get('outs', []):
connectable = Out.objects.get(id=outputId)
connectable.inouts.add(channel)
connectable.save()
# Now it is time to recreate channel to channel connections
for channel_id in new_channels:
new_channel_data = new_channels[channel_id]
inout_id = new_channel_data['id']
if new_channel_data['provisional_id']:
inout_id = id_mapping[inout_id]['new_id']
channel = InOut.objects.get(id=inout_id)
for inout_to_add in new_channel_data.get('inouts', []):
inout_id = inout_to_add['id']
# search final id if needed
if inout_to_add['provisional_id']:
inout_id = id_mapping[inout_id]['new_id']
relationship = RelatedInOut(
in_inout=channel,
out_inout=InOut.objects.get(id=inout_id))
relationship.save()
# Erasing variables associated with channels deleted explicitly by the user
for deleted_channel_id in channelsDeletedByUser:
# Removing workspace_variable and abstract_variable of channels deleted explicitly by user
deleteChannel(deleted_channel_id)
json_result = {'ids': id_mapping, 'urls': rchannels_urls_to_ids}
return HttpResponse(json_encode(json_result),
mimetype='application/json; charset=UTF-8')
except Exception, e:
msg = _('connectables cannot be saved: %(exc)s') % {'exc': e}
raise TracedServerError(e, json, request, msg)
def update(self, request, workspace_id):
user = get_user_authentication(request)
# Gets all needed parameters from request
if 'json' in request.POST:
json = simplejson.loads(request.POST['json'])
else:
return HttpResponseBadRequest(_(u'JSON parameter expected'))
workspace = get_object_or_404(WorkSpace, id=workspace_id)
if not user.is_staff and workspace.creator != user:
return HttpResponseForbidden()
id_mapping = {}
# Phase 1: Additions
channels_to_add = json['channelsToAdd']
for new_channel in channels_to_add:
# Creating the abstract variable for this channel
new_abstract_variable = AbstractVariable(type="WORKSPACE",
name=new_channel['name'])
new_abstract_variable.save()
# Creating the variable value entry for this channel
new_variable_value = VariableValue(
user=user, value="", abstract_variable=new_abstract_variable)
new_variable_value.save()
# And the workspace variable
new_ws_variable = WorkSpaceVariable(
workspace=workspace,
abstract_variable=new_abstract_variable,
aspect="CHANNEL")
new_ws_variable.save()
channel = InOut(name="",
workspace_variable=new_ws_variable,
filter=None,
filter_param_values=None,
friend_code="")
channel.save()
id_mapping[new_channel['id']] = {
'cid': channel.id,
'wvid': new_ws_variable.id
}
# Phase 2: Updates
channels_to_update = json['channelsToUpdate']
for current_channel_data in channels_to_update:
current_channel_id = current_channel_data['id']
# search final id if needed
if current_channel_data['provisional_id']:
current_channel_id = id_mapping[current_channel_id]['cid']
current_channel = InOut.objects.get(id=current_channel_data['id'])
for input_to_add in current_channel_data['inputsToRemove']:
connectable = In.objects.get(id=input_to_add['id'])
connectable.inouts.add(current_channel)
connectable.save()
for input_to_remove in current_channel_data['inputsToRemove']:
connectable = In.objects.get(id=input_to_add['id'])
connectable.inouts.remove(current_channel)
connectable.save()
for output_to_add in current_channel_data['outputsToRemove']:
connectable = Out.objects.get(id=output_to_add['id'])
connectable.inouts.add(current_channel)
connectable.save()
for output_to_remove in current_channel_data['outputsToRemove']:
connectable = Out.objects.get(id=output_to_add['id'])
connectable.inouts.remove(current_channel)
connectable.save()
for inout_to_add in current_channel_data['inoutsToRemove']:
inout_id = input_to_add['id']
# search final id if needed
if inout_to_add['provisional_id']:
inout_id = id_mapping[inout_id]['cid']
relationship = RelatedInOut(
in_inout=current_channel,
out_inout=InOut.objects.get(id=inout_id))
relationship.save()
for output_to_remove in current_channel_data['outputsToRemove']:
inout_id = input_to_add['id']
# search final id if needed
if inout_to_add['provisional_id']:
inout_id = id_mapping[inout_id]['cid']
relationship = RelatedInOut.objects.get(
in_inout=current_channel, out_inout=inout_id)
relationship.delete()
# Phase 3: Deletions
channels_to_remove = json['channelsToRemove']
for current_channel_data in channels_to_remove:
channel = InOut.objects.get(id=current_channel_data['id'])
deleteChannel(channel)
json_result = {'id_mapping': id_mapping}
return HttpResponse(json_encode(json_result),
mimetype='application/json; charset=UTF-8')
def update(self, request, workspace_id):
user = get_user_authentication(request)
# Gets all needed parameters from request
if request.POST.has_key('json'):
json = simplejson.loads(request.POST['json'])
else:
return HttpResponseBadRequest (_(u'JSON parameter expected'))
try:
workspace = WorkSpace.objects.get(id=workspace_id)
except WorkSpace.DoesNotExist:
msg = _('referred workspace %(workspace_name)s does not exist.') % {'workspace_name': workspace_name}
raise TracedServerError(e, json, request, msg)
id_mapping = {}
# Pashe 1: Additions
channels_to_add = json['channelsToAdd']
for new_channel in channels_to_add:
# Creating the abstract variable for this channel
new_abstract_variable = AbstractVariable(type="WORKSPACE", name=new_channel_data['name'])
new_abstract_variable.save()
# Creating the variable value entry for this channel
new_variable_value = VariableValue(user=user, value="", abstract_variable=new_abstract_variable)
new_variable_value.save()
# And the workspace variable
new_ws_variable = WorkSpaceVariable(workspace=workspace, abstract_variable=new_abstract_variable, aspect="CHANNEL")
new_ws_variable.save()
channel = InOut(name="", workspace_variable=new_ws_variable, filter=None, filter_param_values=None, friend_code="")
channel.save()
id_mapping[new_channel['id']] = {'cid': channel.id, 'wvid': new_ws_variable.id}
# Pashe 2: Updates
channels_to_update = json['channelsToUpdate']
for current_channel_data in channels_to_update:
current_channel_id = current_channel_data['id']
# search final id if needed
if current_channel_data['provisional_id']:
current_channel_id = id_mapping[current_channel_id]['cid']
current_channel = InOut.objects.get(id=current_channel_data['id'])
for input_to_add in current_channel_data['inputsToRemove']:
connectable = In.objects.get(id=input_to_add['id'])
connectable.inouts.add(current_channel);
connectable.save()
for input_to_remove in current_channel_data['inputsToRemove']:
connectable = In.objects.get(id=input_to_add['id'])
connectable.inouts.remove(current_channel);
connectable.save()
for output_to_add in current_channel_data['outputsToRemove']:
connectable = Out.objects.get(id=output_to_add['id'])
connectable.inouts.add(current_channel);
connectable.save()
for output_to_remove in current_channel_data['outputsToRemove']:
connectable = Out.objects.get(id=output_to_add['id'])
connectable.inouts.remove(current_channel);
connectable.save()
for inout_to_add in current_channel_data['inoutsToRemove']:
inout_id = input_to_add['id']
# search final id if needed
if inout_to_add['provisional_id']:
inout_id = id_mapping[inout_id]['cid']
relationship = RelatedInOut(in_inout=current_channel, out_inout=InOut.objects.get(id=inout_id))
relationship.save()
for output_to_remove in current_channel_data['outputsToRemove']:
inout_id = input_to_add['id']
# search final id if needed
if inout_to_add['provisional_id']:
inout_id = id_mapping[inout_id]['cid']
relationship = RelatedInOut.objects.get(in_inout=current_channel, out_inout=inout_id)
relationship.delete()
# Pashe 3: Deletions
channels_to_remove = json['channelsToRemove']
for current_channel_data in channels_to_remove:
channel = InOut.objects.get(id=current_channel_data['id'])
abstract_variable = channel.workspace_variable.abstract_variable
VariableValue.objects.get(user=user, abstract_variable=abstract_variable).delete()
abstract_variable.delete()
channel.workspace_variable.delete()
channel.delete()
json_result = {'id_mapping': id_mapping}
return HttpResponse (json_encode(json_result), mimetype='application/json; charset=UTF-8')
def create(self, request, workspace_id):
user = get_user_authentication(request)
# Gets all needed parameters from request
if request.POST.has_key('json'):
json = simplejson.loads(request.POST['json'])
else:
return HttpResponseBadRequest (_(u'JSON parameter expected'))
try:
workspace = WorkSpace.objects.get(id=workspace_id)
# Mapping between provisional ids and database-generated ids!!!
id_mapping = {}
# Erasing variables associated with channels deleted explicitly by the user
channelsDeletedByUser = json['channelsForRemoving']
for deleted_channel_id in channelsDeletedByUser:
#Removing workspace_variable and abstract_variable of channels deleted explicitly by user
deleted_channel = InOut.objects.get(id=deleted_channel_id)
#Remove the related In and Out values
related_ins = deleted_channel.in_set.all()
for rel_in in related_ins:
varValue = VariableValue.objects.get(user=user, abstract_variable=rel_in.variable.abstract_variable)
varValue.value = None
varValue.save()
related_outs = deleted_channel.out_set.all()
for rel_out in related_outs:
varValue = VariableValue.objects.get(user=user, abstract_variable=rel_out.abstract_variable)
varValue.value = None
varValue.save()
abstract_variable = deleted_channel.workspace_variable.abstract_variable
VariableValue.objects.get(user=user, abstract_variable=abstract_variable).delete()
abstract_variable.delete()
deleted_channel.workspace_variable.delete()
if deleted_channel.remote_subscription:
deleted_channel.remote_subscription.delete()
# Erasing all channels of the workspace!!
old_channels = InOut.objects.filter(workspace_variable__workspace=workspace)
old_channels_info = {}
for old_channel in old_channels:
# Deleting the old relationships between channels
# First delete the relationships where old_channel is the input
rel_old_channels = RelatedInOut.objects.filter(in_inout=old_channel)
for channel_delete in rel_old_channels:
channel_delete.delete()
# And then the relationships where old_channel is the output
rel_old_channels = RelatedInOut.objects.filter(out_inout=old_channel)
for channel_delete in rel_old_channels:
channel_delete.delete()
if old_channel.remote_subscription:
old_channel.remote_subscription.delete()
#adding its info to the list of old channels
channel_info = {}
old_ins_aux = old_channel.in_set.all()
channel_info["ins"] = []
for in_aux in old_ins_aux:
channel_info["ins"].append(in_aux.id)
old_outs_aux = old_channel.out_set.all()
channel_info["outs"] = []
for out_aux in old_outs_aux:
channel_info["outs"].append(out_aux.id)
old_channels_info[old_channel.id] = channel_info
# Now delete the current channel
old_channel.delete()
# Adding channels recreating JSON structure!
new_channels = json['inOutList']
for new_channel_data in new_channels:
channel_info = None
# Remote subscriptions!
remote_subscription = None
if new_channel_data['remote_subscription']:
op_code = unicode(new_channel_data['remote_subscription']['op_code'])
url = new_channel_data['remote_subscription']['url']
if op_code != '0':
remote_subscription = RemoteSubscription(operation_code=op_code, url=url)
remote_subscription.save()
if (new_channel_data['provisional_id']):
#It's necessary to create all objects!
#Creating abstract variable
new_abstract_variable = AbstractVariable(type="WORKSPACE", name=new_channel_data['name'])
new_abstract_variable.save()
#Creating variable value
new_variable_value = VariableValue(user=user, value="", abstract_variable=new_abstract_variable)
new_variable_value.save()
new_ws_variable = WorkSpaceVariable(workspace=workspace, abstract_variable=new_abstract_variable, aspect="CHANNEL")
new_ws_variable.save()
filter = None
fparam_values = None
if new_channel_data['filter']:
try:
filter = Filter.objects.get(id=new_channel_data['filter'])
fparam_values = json_encode(new_channel_data['filter_params'])
except Filter.DoesNotExist:
pass
channel = InOut(name=new_channel_data['name'], remote_subscription=remote_subscription, workspace_variable=new_ws_variable, filter=filter, filter_param_values=fparam_values, friend_code="")
channel.save()
# A channel has been generated. It's necessary to correlate provisional and definitive ids!
id_mapping[new_channel_data['id']] = {'new_id': channel.id, 'new_wv_id': new_ws_variable.id}
channel_info = None
else:
#WorkSpaceVariable objects is still in database, it's only necessary to link it!
workspace_variable = WorkSpaceVariable.objects.get(id=new_channel_data['var_id'])
workspace_variable.abstract_variable.name = new_channel_data['name']
workspace_variable.abstract_variable.save()
try:
filter = Filter.objects.get(id=new_channel_data['filter'])
fparam_values = json_encode(new_channel_data['filter_params'])
except Filter.DoesNotExist:
filter = None
fparam_values = None
channel = InOut(id=new_channel_data['id'], remote_subscription=remote_subscription, name=new_channel_data['name'], workspace_variable=workspace_variable, filter=filter, filter_param_values=fparam_values, friend_code="")
channel.save()
channel_info = old_channels_info[new_channel_data['id']]
# In connections
# InOut out connections will be created later
old_ins = None
if channel_info:
old_ins = channel_info["ins"]
ins = new_channel_data['ins']
for inputId in ins:
connectable = In.objects.get(id=inputId)
connectable.inouts.add(channel);
connectable.save()
if old_ins:
#clean the old_ins list
for old_in in old_ins:
if old_in == inputId:
old_ins.remove(old_in)
break
if old_ins:
#check if there is any old In not present now to initialize its value
for old_in in old_ins:
real_old_in = In.objects.get(id=old_in)
varValue = VariableValue.objects.get(user=user, abstract_variable=real_old_in.variable.abstract_variable)
varValue.value = None
varValue.save()
# Out connections
# InOut out connections will be created later
old_outs = None
if channel_info:
old_outs = channel_info["outs"]
outs = new_channel_data['outs']
for outputId in outs:
connectable = Out.objects.get(id=outputId)
connectable.inouts.add(channel);
connectable.save()
if old_outs:
#clean the old_ins list
for old_out in old_outs:
if old_out == outputId:
old_outs.remove(old_out)
break
if old_outs:
#check if there is any old Out not present now to initialize its value
for old_out in old_outs:
real_old_out = Out.objects.get(id=old_out)
varValue = VariableValue.objects.get(user=user, abstract_variable=real_old_out.abstract_variable)
varValue.value = ""
varValue.save()
# Now it is time to recreate channel to channel connections
for new_channel_data in new_channels:
channel = InOut(id=new_channel_data['id'])
inouts = new_channel_data['inouts']
for inout_to_add in inouts:
inout_id = inout_to_add['id']
# search final id if needed
if inout_to_add['provisional_id']:
inout_id = id_mapping[inout_id]['new_id']
relationship = RelatedInOut(in_inout=channel, out_inout=InOut.objects.get(id=inout_id))
relationship.save()
json_result = {'ids': id_mapping}
return HttpResponse (json_encode(json_result), mimetype='application/json; charset=UTF-8')
except WorkSpace.DoesNotExist, e:
msg = _('referred workspace (id: %(workspace_id)s) does not exist.') % {'workspace_id': workspace_id}
raise TracedServerError(e, json, request, msg)
def create(self, request, workspace_id):
user = get_user_authentication(request)
# Gets all needed parameters from request
if request.POST.has_key('json'):
json = simplejson.loads(request.POST['json'])
else:
return HttpResponseBadRequest(_(u'JSON parameter expected'))
try:
workspace = WorkSpace.objects.get(id=workspace_id)
# Mapping between provisional ids and database-generated ids!!!
id_mapping = {}
# Erasing variables associated with channels deleted explicitly by the user
channelsDeletedByUser = json['channelsForRemoving']
for deleted_channel_id in channelsDeletedByUser:
#Removing workspace_variable and abstract_variable of channels deleted explicitly by user
deleted_channel = InOut.objects.get(id=deleted_channel_id)
abstract_variable = deleted_channel.workspace_variable.abstract_variable
VariableValue.objects.get(
user=user, abstract_variable=abstract_variable).delete()
abstract_variable.delete()
deleted_channel.workspace_variable.delete()
# Erasing all channels of the workspace!!
old_channels = InOut.objects.filter(
workspace_variable__workspace=workspace)
if old_channels:
for old_channel in old_channels:
# Deleting the old relationships between channels
# First delete the relationships where old_channel is the input
rel_old_channels = RelatedInOut.objects.filter(
in_inout=old_channel)
if rel_old_channels:
rel_old_channels.delete()
# And then the relationships where old_channel is the output
rel_old_channels = RelatedInOut.objects.filter(
out_inout=old_channel)
if rel_old_channels:
rel_old_channels.delete()
old_channels.delete()
# Adding channels recreating JSON structure!
new_channels = json['inOutList']
for new_channel_data in new_channels:
if (new_channel_data['provisional_id']):
#It's necessary to create all objects!
#Creating abstract variable
new_abstract_variable = AbstractVariable(
type="WORKSPACE", name=new_channel_data['name'])
new_abstract_variable.save()
#Creating variable value
new_variable_value = VariableValue(
user=user,
value="",
abstract_variable=new_abstract_variable)
new_variable_value.save()
new_ws_variable = WorkSpaceVariable(
workspace=workspace,
abstract_variable=new_abstract_variable,
aspect="CHANNEL")
new_ws_variable.save()
filter = None
fparam_values = None
if new_channel_data['filter']:
try:
filter = Filter.objects.get(
id=new_channel_data['filter'])
fparam_values = new_channel_data['filter_params']
except Filter.DoesNotExist:
pass
channel = InOut(name=new_channel_data['name'],
workspace_variable=new_ws_variable,
filter=filter,
filter_param_values=fparam_values,
friend_code="")
channel.save()
# A channel has been generated. It's necessary to correlate provisional and definitive ids!
id_mapping[new_channel_data['id']] = {
'new_id': channel.id,
'new_wv_id': new_ws_variable.id
}
else:
#WorkSpaceVariable objects is still in database, it's only necessary to link it!
workspace_variable = WorkSpaceVariable.objects.get(
id=new_channel_data['var_id'])
workspace_variable.abstract_variable.name = new_channel_data[
'name']
workspace_variable.abstract_variable.save()
try:
filter = Filter.objects.get(
id=new_channel_data['filter'])
fparam_values = new_channel_data['filter_params']
except Filter.DoesNotExist:
filter = None
fparam_values = None
channel = InOut(id=new_channel_data['id'],
name=new_channel_data['name'],
workspace_variable=workspace_variable,
filter=filter,
filter_param_values=fparam_values,
friend_code="")
channel.save()
# In connections
# InOut out connections will be created later
ins = new_channel_data['ins']
for inputId in ins:
connectable = In.objects.get(id=inputId)
connectable.inouts.add(channel)
connectable.save()
# Out connections
# InOut out connections will be created later
outs = new_channel_data['outs']
for outputId in outs:
connectable = Out.objects.get(id=outputId)
connectable.inouts.add(channel)
connectable.save()
# Now it is time to recreate channel to channel connections
for new_channel_data in new_channels:
inouts = new_channel_data['inouts']
for inout_to_add in inouts:
inout_id = inout_to_add['id']
# search final id if needed
if inout_to_add['provisional_id']:
inout_id = id_mapping[inout_id]['new_id']
relationship = RelatedInOut(
in_inout=channel,
out_inout=InOut.objects.get(id=inout_id))
relationship.save()
# Saves all channels
#transaction.commit()
json_result = {'ids': id_mapping}
return HttpResponse(json_encode(json_result),
mimetype='application/json; charset=UTF-8')
except WorkSpace.DoesNotExist:
msg = _(
'referred workspace %(workspace_name)s does not exist.') % {
'workspace_name': workspace_name
}
raise TracedServerError(e, json, request, msg)
except Exception, e:
msg = _('connectables cannot be saved: %(exc)s') % {'exc': e}
raise TracedServerError(e, json, request, msg)
