Files
ragflow/agent/component/loop.py
2026-06-26 16:29:08 +08:00

106 lines
3.5 KiB
Python

#
# 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 abc import ABC
from agent.component.base import ComponentBase, ComponentParamBase
class LoopParam(ComponentParamBase):
"""
Define the Loop component parameters.
"""
def __init__(self):
super().__init__()
self.loop_variables = []
self.loop_termination_condition=[]
self.maximum_loop_count = 0
def get_input_form(self) -> dict[str, dict]:
return {
"items": {
"type": "json",
"name": "Items"
}
}
def check(self):
return True
class Loop(ComponentBase, ABC):
component_name = "Loop"
@staticmethod
def _is_missing_required_field(value):
if value is None:
return True
if isinstance(value, str):
return value == ""
return False
@classmethod
def _is_incomplete_loop_variable(cls, item):
if any(
[
cls._is_missing_required_field(item.get("variable")),
cls._is_missing_required_field(item.get("input_mode")),
cls._is_missing_required_field(item.get("type")),
]
):
return True
input_mode = item.get("input_mode")
if input_mode == "variable":
return cls._is_missing_required_field(item.get("value"))
if input_mode == "constant":
return item.get("value") is None
return True
def get_start(self):
for cid in self._canvas.components.keys():
if self._canvas.get_component(cid)["obj"].component_name.lower() != "loopitem":
continue
if self._canvas.get_component(cid)["parent_id"] == self._id:
return cid
def _invoke(self, **kwargs):
if self.check_if_canceled("Loop processing"):
return
for item in self._param.loop_variables:
if self._is_incomplete_loop_variable(item):
raise ValueError("Loop Variable is not complete.")
if item["input_mode"]=="variable":
self.set_output(item["variable"],self._canvas.get_variable_value(item["value"]))
elif item["input_mode"]=="constant":
self.set_output(item["variable"],item["value"])
else:
if item["type"] == "number":
self.set_output(item["variable"], 0)
elif item["type"] == "string":
self.set_output(item["variable"], "")
elif item["type"] == "boolean":
self.set_output(item["variable"], False)
elif item["type"].startswith("object"):
self.set_output(item["variable"], {})
elif item["type"].startswith("array"):
self.set_output(item["variable"], [])
else:
self.set_output(item["variable"], "")
def thoughts(self) -> str:
return "Loop from canvas."