feat: template transform

api/core/workflow/nodes/code/code_executor.py → api/core/helper/code_executor/code_executor.py

 from os import environ
+from typing import Literal
 
 from httpx import post
 from pydantic import BaseModel
 from yarl import URL
 
-from core.workflow.nodes.code.python_template import PythonTemplateTransformer
+from core.helper.code_executor.python_transformer import PythonTemplateTransformer
 
 # Code Executor
 CODE_EXECUTION_ENDPOINT = environ.get('CODE_EXECUTION_ENDPOINT', '')
@@ -24,7 +25,7 @@ class CodeExecutionResponse(BaseModel):
 
 class CodeExecutor:
     @classmethod
-    def execute_code(cls, language: str, code: str, inputs: dict) -> dict:
+    def execute_code(cls, language: Literal['python3', 'javascript', 'jina2'], code: str, inputs: dict) -> dict:
         """
         Execute code
         :param language: code language
@@ -32,7 +33,13 @@ class CodeExecutor:
         :param inputs: inputs
         :return:
         """
-        runner = PythonTemplateTransformer.transform_caller(code, inputs)
+        template_transformer = None
+        if language == 'python3':
+            template_transformer = PythonTemplateTransformer
+        else:
+            raise CodeExecutionException('Unsupported language')
+
+        runner = template_transformer.transform_caller(code, inputs)
 
         url = URL(CODE_EXECUTION_ENDPOINT) / 'v1' / 'sandbox' / 'run'
         headers = {
@@ -67,4 +74,4 @@ class CodeExecutor:
         if response.data.stderr:
             raise CodeExecutionException(response.data.stderr)
         
-        return PythonTemplateTransformer.transform_response(response.data.stdout)
\ No newline at end of file
+        return template_transformer.transform_response(response.data.stdout)
\ No newline at end of file

api/core/helper/code_executor/javascript_transformer.py

+# TODO
\ No newline at end of file

api/core/helper/code_executor/jina2_transformer.py

+# TODO
\ No newline at end of file

api/core/workflow/nodes/code/python_template.py → api/core/helper/code_executor/python_transformer.py

 import json
 import re
 
+from core.helper.code_executor.template_transformer import TemplateTransformer
+
 PYTHON_RUNNER = """# declare main function here
 {{code}}
 
@@ -19,7 +21,7 @@ print(result)
 """
 
 
-class PythonTemplateTransformer:
+class PythonTemplateTransformer(TemplateTransformer):
     @classmethod
     def transform_caller(cls, code: str, inputs: dict) -> str:
         """

api/core/helper/code_executor/template_transformer.py

+from abc import ABC, abstractmethod
+
+
+class TemplateTransformer(ABC):
+    @classmethod
+    @abstractmethod
+    def transform_caller(cls, code: str, inputs: dict) -> str:
+        """
+        Transform code to python runner
+        :param code: code
+        :param inputs: inputs
+        :return:
+        """
+        pass
+    
+    @classmethod
+    @abstractmethod
+    def transform_response(cls, response: str) -> dict:
+        """
+        Transform response to dict
+        :param response: response
+        :return:
+        """
+        pass
\ No newline at end of file

api/core/workflow/nodes/code/code_node.py

 from typing import Optional, Union, cast
 
+from core.helper.code_executor.code_executor import CodeExecutionException, CodeExecutor
 from core.workflow.entities.node_entities import NodeRunResult, NodeType
 from core.workflow.entities.variable_pool import VariablePool
 from core.workflow.nodes.base_node import BaseNode
-from core.workflow.nodes.code.code_executor import CodeExecutionException, CodeExecutor
 from core.workflow.nodes.code.entities import CodeNodeData
 from models.workflow import WorkflowNodeExecutionStatus
 

api/core/workflow/nodes/code/entities.py

@@ -16,6 +16,6 @@ class CodeNodeData(BaseNodeData):
 
     variables: list[VariableSelector]
     answer: str
-    code_language: str
+    code_language: Literal['python3', 'javascript']
     code: str
     outputs: dict[str, Output]

api/core/workflow/nodes/http_request/http_request_node.py

 from typing import cast
 
-from core.workflow.entities.base_node_data_entities import BaseNodeData
 from core.workflow.entities.node_entities import NodeRunResult, NodeType
 from core.workflow.entities.variable_pool import VariablePool
 from core.workflow.nodes.base_node import BaseNode

api/core/workflow/nodes/template_transform/entities.py

+from typing import Literal, Union
+
+from pydantic import BaseModel
+
+from core.workflow.entities.base_node_data_entities import BaseNodeData
+from core.workflow.entities.variable_entities import VariableSelector
+
+
+class TemplateTransformNodeData(BaseNodeData):
+    """
+    Code Node Data.
+    """
+    variables: list[VariableSelector]
+    template: str
\ No newline at end of file

api/core/workflow/nodes/template_transform/template_transform_node.py

-from typing import Optional
+from typing import Optional, cast
+from core.helper.code_executor.code_executor import CodeExecutionException, CodeExecutor
+from core.workflow.entities.base_node_data_entities import BaseNodeData
+from core.workflow.entities.node_entities import NodeRunResult, NodeType
+from core.workflow.entities.variable_pool import VariablePool
 
 from core.workflow.nodes.base_node import BaseNode
+from core.workflow.nodes.template_transform.entities import TemplateTransformNodeData
+from models.workflow import WorkflowNodeExecutionStatus
 
 
 class TemplateTransformNode(BaseNode):
+    _node_data_cls = TemplateTransformNodeData
+    _node_type = NodeType.TEMPLATE_TRANSFORM
+
     @classmethod
     def get_default_config(cls, filters: Optional[dict] = None) -> dict:
         """
@@ -23,3 +32,51 @@ class TemplateTransformNode(BaseNode):
                 "template": "{{ arg1 }}"
             }
         }
+
+    def _run(self, variable_pool: VariablePool) -> NodeRunResult:
+        """
+        Run node
+        """
+        node_data = self.node_data
+        node_data: TemplateTransformNodeData = cast(self._node_data_cls, node_data)
+
+        # Get variables
+        variables = {}
+        for variable_selector in node_data.variables:
+            variable = variable_selector.variable
+            value = variable_pool.get_variable_value(
+                variable_selector=variable_selector.value_selector
+            )
+
+            variables[variable] = value
+
+        # Run code
+        try:
+            result = CodeExecutor.execute_code(
+                language='jina2',
+                code=node_data.template,
+                inputs=variables
+            )
+        except CodeExecutionException as e:
+            return NodeRunResult(
+                inputs=variables,
+                status=WorkflowNodeExecutionStatus.FAILED,
+                error=str(e)
+            )
+
+        return NodeRunResult(
+            status=WorkflowNodeExecutionStatus.SUCCEEDED,
+            inputs=variables,
+            outputs=result['result']
+        )
+    
+    @classmethod
+    def _extract_variable_selector_to_variable_mapping(cls, node_data: TemplateTransformNodeData) -> dict[list[str], str]:
+        """
+        Extract variable selector to variable mapping
+        :param node_data: node data
+        :return:
+        """
+        return {
+            variable_selector.value_selector: variable_selector.variable for variable_selector in node_data.variables
+        }
\ No newline at end of file