feat(trigger): enhance trigger debugging with polling API and new subscription retrieval

- Refactored DraftWorkflowTriggerNodeApi and DraftWorkflowTriggerRunApi to implement polling for trigger events instead of listening, improving responsiveness and reliability.
- Introduced TriggerSubscriptionBuilderGetApi to retrieve subscription instances for trigger providers, enhancing the API's capabilities.
- Removed deprecated trigger event classes and streamlined event handling in TriggerDebugService, ensuring a cleaner architecture.
- Updated Queue and Stream entities to reflect the changes in trigger event handling, improving overall clarity and maintainability.

These enhancements significantly improve the trigger debugging experience and API usability.

api/core/app/entities/queue_entities.py

@@ -51,11 +51,6 @@ class QueueEvent(StrEnum):
     PING = "ping"
     STOP = "stop"
     RETRY = "retry"
-    TRIGGER_LISTENING_STARTED = "trigger_listening_started"
-    TRIGGER_TRIGGERED = "trigger_triggered"
-    TRIGGER_NODE_FINISHED = "trigger_node_finished"
-    TRIGGER_LISTENING_TIMEOUT = "trigger_listening_timeout"
-
 
 class AppQueueEvent(BaseModel):
     """
@@ -722,54 +717,6 @@ class QueueParallelBranchRunSucceededEvent(AppQueueEvent):
     """loop id if node is in loop"""
 
 
-class QueueTriggerListeningStartedEvent(AppQueueEvent):
-    """
-    QueueTriggerListeningStartedEvent entity
-    """
-
-    event: QueueEvent = QueueEvent.TRIGGER_LISTENING_STARTED
-    session_id: str
-    webhook_url: str
-    timeout: int
-
-
-class QueueTriggerTriggeredEvent(AppQueueEvent):
-    """
-    QueueTriggerTriggeredEvent entity
-    """
-
-    event: QueueEvent = QueueEvent.TRIGGER_TRIGGERED
-    subscription_id: str
-    triggers: list[str]
-    request_id: str
-    timestamp: float
-
-
-class QueueTriggerNodeFinishedEvent(AppQueueEvent):
-    """
-    QueueTriggerNodeFinishedEvent entity
-    """
-
-    event: QueueEvent = QueueEvent.TRIGGER_NODE_FINISHED
-    id: str
-    node_id: str
-    node_type: str
-    status: str
-    outputs: Optional[Mapping[str, Any]] = None
-    error: Optional[str] = None
-    elapsed_time: Optional[float] = None
-    execution_metadata: Optional[Mapping[str, Any]] = None
-
-
-class QueueTriggerListeningTimeoutEvent(AppQueueEvent):
-    """
-    QueueTriggerListeningTimeoutEvent entity
-    """
-
-    event: QueueEvent = QueueEvent.TRIGGER_LISTENING_TIMEOUT
-    error: str = "Timeout waiting for trigger"
-
-
 class QueueParallelBranchRunFailedEvent(AppQueueEvent):
     """
     QueueParallelBranchRunFailedEvent entity

api/core/app/entities/task_entities.py

@@ -82,11 +82,6 @@ class StreamEvent(Enum):
     TEXT_CHUNK = "text_chunk"
     TEXT_REPLACE = "text_replace"
     AGENT_LOG = "agent_log"
-    # Trigger debug events
-    TRIGGER_LISTENING_STARTED = "trigger_listening_started"
-    TRIGGER_LISTENING_TIMEOUT = "trigger_listening_timeout"
-    TRIGGER_TRIGGERED = "trigger_triggered"
-    TRIGGER_NODE_FINISHED = "trigger_node_finished"
 
 
 class StreamResponse(BaseModel):
@@ -842,52 +837,3 @@ class AgentLogStreamResponse(StreamResponse):
 
     event: StreamEvent = StreamEvent.AGENT_LOG
     data: Data
-
-
-# Trigger Debug Stream Responses
-class TriggerListeningStartedResponse(StreamResponse):
-    """
-    TriggerListeningStartedResponse entity
-    """
-
-    event: StreamEvent = StreamEvent.TRIGGER_LISTENING_STARTED
-    session_id: str
-    webhook_url: str
-    timeout: int
-
-
-class TriggerTriggeredResponse(StreamResponse):
-    """
-    TriggerTriggeredResponse entity
-    """
-
-    event: StreamEvent = StreamEvent.TRIGGER_TRIGGERED
-    subscription_id: str
-    triggers: list[str]
-    request_id: str
-    timestamp: float
-
-
-class TriggerNodeFinishedResponse(StreamResponse):
-    """
-    TriggerNodeFinishedResponse entity
-    """
-
-    event: StreamEvent = StreamEvent.TRIGGER_NODE_FINISHED
-    id: str
-    node_id: str
-    node_type: str
-    status: str
-    outputs: Optional[Mapping[str, Any]] = None
-    error: Optional[str] = None
-    elapsed_time: float
-    execution_metadata: Optional[Mapping[str, Any]] = None
-
-
-class TriggerListeningTimeoutResponse(StreamResponse):
-    """
-    TriggerListeningTimeoutResponse entity
-    """
-
-    event: StreamEvent = StreamEvent.TRIGGER_LISTENING_TIMEOUT
-    error: str = "Timeout waiting for trigger"

api/core/trigger/entities/entities.py

@@ -269,15 +269,6 @@ class TriggerInputs(BaseModel):
     trigger_name: str
     subscription_id: str
 
-    @classmethod
-    def from_trigger_data(cls, trigger_data: TriggerEventData) -> "TriggerInputs":
-        """Create from debug event data."""
-        return cls(
-            request_id=trigger_data.request_id,
-            trigger_name=trigger_data.triggers[0] if trigger_data.triggers else "",
-            subscription_id=trigger_data.subscription_id,
-        )
-
     @classmethod
     def from_trigger_entity(cls, request_id: str, subscription_id: str, trigger: TriggerEntity) -> "TriggerInputs":
         """Create from trigger entity (for production)."""

api/core/workflow/nodes/enums.py

@@ -29,6 +29,15 @@ class NodeType(StrEnum):
     TRIGGER_SCHEDULE = "trigger-schedule"
     TRIGGER_PLUGIN = "trigger-plugin"
 
+    @property
+    def is_start_node(self) -> bool:
+        return self in [
+            NodeType.START,
+            NodeType.TRIGGER_WEBHOOK,
+            NodeType.TRIGGER_SCHEDULE,
+            NodeType.TRIGGER_PLUGIN,
+        ]
+
 
 class ErrorStrategy(StrEnum):
     FAIL_BRANCH = "fail-branch"