feat: introduce trigger functionality (#27644)

Signed-off-by: lyzno1 <yuanyouhuilyz@gmail.com>
Co-authored-by: Stream <Stream_2@qq.com>
Co-authored-by: lyzno1 <92089059+lyzno1@users.noreply.github.com>
Co-authored-by: zhsama <torvalds@linux.do>
Co-authored-by: Harry <xh001x@hotmail.com>
Co-authored-by: lyzno1 <yuanyouhuilyz@gmail.com>
Co-authored-by: yessenia <yessenia.contact@gmail.com>
Co-authored-by: hjlarry <hjlarry@163.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>
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api/controllers/trigger/__init__.py

@@ -0,0 +1,12 @@
+from flask import Blueprint
+
+# Create trigger blueprint
+bp = Blueprint("trigger", __name__, url_prefix="/triggers")
+
+# Import routes after blueprint creation to avoid circular imports
+from . import trigger, webhook
+
+__all__ = [
+    "trigger",
+    "webhook",
+]

api/controllers/trigger/trigger.py

@@ -0,0 +1,43 @@
+import logging
+import re
+
+from flask import jsonify, request
+from werkzeug.exceptions import NotFound
+
+from controllers.trigger import bp
+from services.trigger.trigger_service import TriggerService
+from services.trigger.trigger_subscription_builder_service import TriggerSubscriptionBuilderService
+
+logger = logging.getLogger(__name__)
+
+UUID_PATTERN = r"^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$"
+UUID_MATCHER = re.compile(UUID_PATTERN)
+
+
+@bp.route("/plugin/<string:endpoint_id>", methods=["GET", "POST", "PUT", "PATCH", "DELETE", "HEAD", "OPTIONS"])
+def trigger_endpoint(endpoint_id: str):
+    """
+    Handle endpoint trigger calls.
+    """
+    # endpoint_id must be UUID
+    if not UUID_MATCHER.match(endpoint_id):
+        raise NotFound("Invalid endpoint ID")
+    handling_chain = [
+        TriggerService.process_endpoint,
+        TriggerSubscriptionBuilderService.process_builder_validation_endpoint,
+    ]
+    response = None
+    try:
+        for handler in handling_chain:
+            response = handler(endpoint_id, request)
+            if response:
+                break
+        if not response:
+            logger.error("Endpoint not found for {endpoint_id}")
+            return jsonify({"error": "Endpoint not found"}), 404
+        return response
+    except ValueError as e:
+        return jsonify({"error": "Endpoint processing failed", "message": str(e)}), 400
+    except Exception:
+        logger.exception("Webhook processing failed for {endpoint_id}")
+        return jsonify({"error": "Internal server error"}), 500

api/controllers/trigger/webhook.py

@@ -0,0 +1,105 @@
+import logging
+import time
+
+from flask import jsonify
+from werkzeug.exceptions import NotFound, RequestEntityTooLarge
+
+from controllers.trigger import bp
+from core.trigger.debug.event_bus import TriggerDebugEventBus
+from core.trigger.debug.events import WebhookDebugEvent, build_webhook_pool_key
+from services.trigger.webhook_service import WebhookService
+
+logger = logging.getLogger(__name__)
+
+
+def _prepare_webhook_execution(webhook_id: str, is_debug: bool = False):
+    """Fetch trigger context, extract request data, and validate payload using unified processing.
+
+    Args:
+        webhook_id: The webhook ID to process
+        is_debug: If True, skip status validation for debug mode
+    """
+    webhook_trigger, workflow, node_config = WebhookService.get_webhook_trigger_and_workflow(
+        webhook_id, is_debug=is_debug
+    )
+
+    try:
+        # Use new unified extraction and validation
+        webhook_data = WebhookService.extract_and_validate_webhook_data(webhook_trigger, node_config)
+        return webhook_trigger, workflow, node_config, webhook_data, None
+    except ValueError as e:
+        # Fall back to raw extraction for error reporting
+        webhook_data = WebhookService.extract_webhook_data(webhook_trigger)
+        return webhook_trigger, workflow, node_config, webhook_data, str(e)
+
+
+@bp.route("/webhook/<string:webhook_id>", methods=["GET", "POST", "PUT", "PATCH", "DELETE", "HEAD", "OPTIONS"])
+def handle_webhook(webhook_id: str):
+    """
+    Handle webhook trigger calls.
+
+    This endpoint receives webhook calls and processes them according to the
+    configured webhook trigger settings.
+    """
+    try:
+        webhook_trigger, workflow, node_config, webhook_data, error = _prepare_webhook_execution(webhook_id)
+        if error:
+            return jsonify({"error": "Bad Request", "message": error}), 400
+
+        # Process webhook call (send to Celery)
+        WebhookService.trigger_workflow_execution(webhook_trigger, webhook_data, workflow)
+
+        # Return configured response
+        response_data, status_code = WebhookService.generate_webhook_response(node_config)
+        return jsonify(response_data), status_code
+
+    except ValueError as e:
+        raise NotFound(str(e))
+    except RequestEntityTooLarge:
+        raise
+    except Exception as e:
+        logger.exception("Webhook processing failed for %s", webhook_id)
+        return jsonify({"error": "Internal server error", "message": str(e)}), 500
+
+
+@bp.route("/webhook-debug/<string:webhook_id>", methods=["GET", "POST", "PUT", "PATCH", "DELETE", "HEAD", "OPTIONS"])
+def handle_webhook_debug(webhook_id: str):
+    """Handle webhook debug calls without triggering production workflow execution."""
+    try:
+        webhook_trigger, _, node_config, webhook_data, error = _prepare_webhook_execution(webhook_id, is_debug=True)
+        if error:
+            return jsonify({"error": "Bad Request", "message": error}), 400
+
+        workflow_inputs = WebhookService.build_workflow_inputs(webhook_data)
+
+        # Generate pool key and dispatch debug event
+        pool_key: str = build_webhook_pool_key(
+            tenant_id=webhook_trigger.tenant_id,
+            app_id=webhook_trigger.app_id,
+            node_id=webhook_trigger.node_id,
+        )
+        event = WebhookDebugEvent(
+            request_id=f"webhook_debug_{webhook_trigger.webhook_id}_{int(time.time() * 1000)}",
+            timestamp=int(time.time()),
+            node_id=webhook_trigger.node_id,
+            payload={
+                "inputs": workflow_inputs,
+                "webhook_data": webhook_data,
+                "method": webhook_data.get("method"),
+            },
+        )
+        TriggerDebugEventBus.dispatch(
+            tenant_id=webhook_trigger.tenant_id,
+            event=event,
+            pool_key=pool_key,
+        )
+        response_data, status_code = WebhookService.generate_webhook_response(node_config)
+        return jsonify(response_data), status_code
+
+    except ValueError as e:
+        raise NotFound(str(e))
+    except RequestEntityTooLarge:
+        raise
+    except Exception as e:
+        logger.exception("Webhook debug processing failed for %s", webhook_id)
+        return jsonify({"error": "Internal server error", "message": "An internal error has occurred."}), 500