def api_clone(self, request, id):
wf = self.get_object_or_404(Workflow, id=id)
# Get all clone names
m = 0
for d in Workflow._get_collection().find(
{
"name": {
"$regex": re.compile(
r"^%s\(Copy #\d+\)$" % re.escape(wf.name))
}
},
{
"_id": 0,
"name": 1
},
):
match = self.rx_clone_name.search(d["name"])
if match:
n = int(match.group(1))
if n > m:
m = n
# Generate name
name = "%s (Copy #%d)" % (wf.name, m + 1)
# Clone workflow
new_wf = deepcopy(wf)
new_wf.name = name
new_wf.id = None
new_wf.bi_id = None
new_wf.save()
# Clone states
smap = {} # old id -> new state
for state in State.objects.filter(workflow=wf.id):
new_state = deepcopy(state)
new_state.workflow = new_wf
new_state.id = None
new_state.bi_id = None
new_state.save()
smap[state.id] = new_state
# Clone transitions
for transition in Transition.objects.filter(workflow=wf.id):
new_transition = deepcopy(transition)
new_transition.workflow = new_wf
new_transition.from_state = smap[transition.from_state.id]
new_transition.to_state = smap[transition.to_state.id]
new_transition.id = None
new_transition.bi_id = None
new_transition.save()
#
return {"id": str(new_wf.id)}
def api_save_config(self, request, id, name, description, states,
transitions, **kwargs):
if id == self.NEW_ID:
wf = Workflow()
else:
wf = self.get_object_or_404(Workflow, id=id)
# Update workflow
wf.name = name
wf.description = description
wf.save()
# Get current state
current_states = {} # str(id) -> state
for st in State.objects.filter(workflow=wf.id):
current_states[str(st.id)] = st
# Synchronize states
seen_states = set()
state_names = {} # name -> state
for s in states:
state = None
if s["id"]:
# Existing state
seen_states.add(s["id"])
state = current_states.get(s["id"])
if not hasattr(s, "workflow"):
s["workflow"] = wf.id
# Update state attributes
if not state:
state = State()
changed = True
else:
changed = False
for k in s:
if k in ("id", "bi_id"):
continue
if getattr(state, k) != s[k]:
setattr(state, k, s[k])
changed = True
if changed:
state.save()
state_names[state.name] = state
# Get current transitions
current_transitions = {} # str(id) -> transition
for ct in Transition.objects.filter(workflow=wf.id):
current_transitions[str(ct.id)] = ct
# Synchronize transitions
seen_transitions = set()
for t in transitions:
transition = None
if t["id"]:
# Existing transitions
seen_transitions.add(t["id"])
transition = current_transitions.get(t["id"])
# Update transition attributes
if not transition:
transition = Transition(workflow=wf)
changed = True
else:
changed = False
for k in t:
if k in ("id", "bi_id"):
continue
elif k in ("from_state", "to_state"):
t[k] = state_names[t[k]]
elif k == "vertices":
t[k] = [
TransitionVertex(x=vx["x"], y=vx["y"]) for vx in t[k]
]
old = getattr(transition, k)
if old != t[k]:
setattr(transition, k, t[k])
changed = True
if changed:
transition.save()
# Delete hanging transitions
for tid in set(current_transitions) - seen_transitions:
current_transitions[tid].delete()
# Delete hanging state
for sid in set(current_states) - seen_states:
current_states[sid].delete()