Feat: add webhook component. (#11033)

### What problem does this PR solve?

#10427

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

agent/canvas.py

@@ -277,6 +277,14 @@ class Canvas(Graph):
         for k, cpn in self.components.items():
             self.components[k]["obj"].reset(True)
 
+        if kwargs.get("webhook_payload"):
+            for k, cpn in self.components.items():
+                if self.components[k]["obj"].component_name.lower() == "webhook":
+                    for kk, vv in kwargs["webhook_payload"].items():
+                        self.components[k]["obj"].set_output(kk, vv)
+
+            self.components[k]["obj"].reset(True)
+
         for k in kwargs.keys():
             if k in ["query", "user_id", "files"] and kwargs[k]:
                 if k == "files":

agent/component/llm.py

@@ -216,7 +216,7 @@ class LLM(ComponentBase):
         error: str = ""
         output_structure=None
         try:
-            output_structure = None#self._param.outputs['structured']
+            output_structure = self._param.outputs['structured']
         except Exception:
             pass
         if output_structure:

agent/component/webhook.py

@@ -0,0 +1,38 @@
+#
+#  Copyright 2024 The InfiniFlow Authors. All Rights Reserved.
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+from agent.component.base import ComponentParamBase, ComponentBase
+
+
+class WebhookParam(ComponentParamBase):
+
+    """
+    Define the Begin component parameters.
+    """
+    def __init__(self):
+        super().__init__()
+
+    def get_input_form(self) -> dict[str, dict]:
+        return getattr(self, "inputs")
+
+
+class Webhook(ComponentBase):
+    component_name = "Webhook"
+
+    def _invoke(self, **kwargs):
+        pass
+
+    def thoughts(self) -> str:
+        return ""