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Merged
merged 5 commits into from
Jul 29, 2025
Merged

Adding metadata to events #38

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a68335d
removed unused imports
oEscal Jul 11, 2025
6a80846
event state now has all the information regarding its events and states
oEscal Jul 11, 2025
1f556e5
generating metadata for action events
oEscal Jul 28, 2025
5e46d8e
Merge branch 'main' of github.com:serverlessworkflow/sdk-python
oEscal Jul 28, 2025
8cd1e53
Merge branch 'main' into bug/action_events_metadata
oEscal Jul 28, 2025
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98 changes: 90 additions & 8 deletions serverlessworkflow/sdk/state_machine_generator.py
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,6 @@
from serverlessworkflow.sdk.transition_data_condition import TransitionDataCondition
from serverlessworkflow.sdk.end_data_condition import EndDataCondition

from transitions.extensions import HierarchicalMachine, GraphMachine
from transitions.extensions.nesting import NestedState
import warnings

Expand Down Expand Up @@ -260,7 +259,67 @@ def sleep_state_details(self):

def event_state_details(self):
if isinstance(self.current_state, EventState):
self.state_to_machine_state(["event_state", "state"])
state = self.state_to_machine_state(["event_state", "state"])
if self.get_actions:
if on_events := self.current_state.onEvents:
state.initial = [] if len(on_events) > 1 else on_events[0]
for i, oe in enumerate(on_events):
state.add_substate(
oe_state := self.state_machine.state_cls(
oe_name := f"onEvent {i}"
)
)

# define initial state
if i == 0 and len(on_events) > 1:
state.initial = [oe_state.name]
elif i == 0 and len(on_events) == 1:
state.initial = oe_state.name
else:
state.initial.append(oe_state.name)

event_names = []
for ie, event in enumerate(oe.eventRefs):
oe_state.add_substate(
ns := self.state_machine.state_cls(event)
)
ns.tags = ["event"]
self.get_action_event(state=ns, e_name=event)
event_names.append(event)

# define initial state
if ie == 0 and len(oe.eventRefs) > 1:
oe_state.initial = [event]
elif ie == 0 and len(oe.eventRefs) == 1:
oe_state.initial = event
else:
oe_state.initial.append(event)

if self.current_state.exclusive:
oe_state.add_substate(
ns := self.state_machine.state_cls(
action_name := f"action {ie}"
)
)
self.state_machine.add_transition(
trigger="",
source=f"{self.current_state.name}.{oe_name}.{event}",
dest=f"{self.current_state.name}.{oe_name}.{action_name}",
)
self.generate_actions_info(
machine_state=ns,
state_name=f"{self.current_state.name}.{oe_name}.{action_name}",
actions=oe.actions,
action_mode=oe.actionMode,
)
if not self.current_state.exclusive and oe.actions:
self.generate_actions_info(
machine_state=oe_state,
state_name=f"{self.current_state.name}.{oe_name}",
actions=oe.actions,
action_mode=oe.actionMode,
initial_states=event_names,
)

def foreach_state_details(self):
if isinstance(self.current_state, ForEachState):
Expand Down Expand Up @@ -353,6 +412,7 @@ def generate_actions_info(
state_name: str,
actions: List[Dict[str, Action]],
action_mode: str = "sequential",
initial_states: List[str] = [],
):
if self.get_actions:
parallel_states = []
Expand Down Expand Up @@ -387,7 +447,11 @@ def generate_actions_info(
ns := self.state_machine.state_cls(name)
)
ns.tags = ["event"]
self.get_action_event(state=ns, e_name=name)
self.get_action_event(
state=ns,
e_name=action.eventRef.triggerEventRef,
er_name=action.eventRef.resultEventRef,
)
if name:
if action_mode == "sequential":
if i < len(actions) - 1:
Expand Down Expand Up @@ -439,19 +503,36 @@ def generate_actions_info(
)
ns.tags = ["event"]
self.get_action_event(
state=ns, e_name=next_name
state=ns,
e_name=action.eventRef.triggerEventRef,
er_name=action.eventRef.resultEventRef,
)
self.state_machine.add_transition(
trigger="",
source=f"{state_name}.{name}",
dest=f"{state_name}.{next_name}",
)
if i == 0:
if i == 0 and not initial_states:
machine_state.initial = name
elif i == 0 and initial_states:
for init_s in initial_states:
self.state_machine.add_transition(
trigger="",
source=f"{state_name}.{init_s}",
dest=f"{state_name}.{name}",
)
elif action_mode == "parallel":
parallel_states.append(name)
if action_mode == "parallel":
if action_mode == "parallel" and not initial_states:
machine_state.initial = parallel_states
elif action_mode == "parallel" and initial_states:
for init_s in initial_states:
for ps in parallel_states:
self.state_machine.add_transition(
trigger="",
source=f"{state_name}.{init_s}",
dest=f"{state_name}.{ps}",
)

def get_action_function(self, state: NestedState, f_name: str):
if self.workflow.functions:
Expand All @@ -461,13 +542,14 @@ def get_action_function(self, state: NestedState, f_name: str):
state.metadata = {"function": current_function}
break

def get_action_event(self, state: NestedState, e_name: str):
def get_action_event(self, state: NestedState, e_name: str, er_name: str = ""):
if self.workflow.events:
for event in self.workflow.events:
current_event = event.serialize().__dict__
if current_event["name"] == e_name:
state.metadata = {"event": current_event}
break
if current_event["name"] == er_name:
state.metadata = {"result_event": current_event}

def subflow_state_name(self, action: Action, subflow: Workflow):
return (
Expand Down
3 changes: 0 additions & 3 deletions serverlessworkflow/sdk/state_machine_helper.py
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Original file line number Diff line number Diff line change
@@ -1,13 +1,10 @@
from typing import List
from serverlessworkflow.sdk.workflow import Workflow
from serverlessworkflow.sdk.state_machine_generator import StateMachineGenerator
from transitions.extensions.diagrams import HierarchicalGraphMachine, GraphMachine
from serverlessworkflow.sdk.state_machine_extensions import (
CustomGraphMachine,
CustomHierarchicalGraphMachine,
)
from transitions.extensions.nesting import NestedState
from transitions.extensions.diagrams_base import BaseGraph


class StateMachineHelper:
Expand Down
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