feat: add File Upload node functionality and related components

- Implemented File Upload node with support for uploading files to the sandbox.
- Added necessary UI components including node panel and default configurations.
- Enhanced workflow constants and enums to include File Upload.
- Updated error handling for file upload operations.
- Integrated File Upload into existing workflow structure, ensuring compatibility with variable handling and output management.
- Added translations for new File Upload features in workflow.json.

api/core/app/apps/advanced_chat/app_generator.py

@@ -505,22 +505,25 @@ class AdvancedChatAppGenerator(MessageBasedAppGenerator):
             sandbox_provider = SandboxProviderService.get_sandbox_provider(
                 application_generate_entity.app_config.tenant_id
             )
-            if workflow.version == Workflow.VERSION_DRAFT:
+            try:
-                sandbox = SandboxService.create_draft(
+                if workflow.version == Workflow.VERSION_DRAFT:
-                    tenant_id=application_generate_entity.app_config.tenant_id,
+                    sandbox = SandboxService.create_draft(
-                    app_id=application_generate_entity.app_config.app_id,
+                        tenant_id=application_generate_entity.app_config.tenant_id,
-                    user_id=application_generate_entity.user_id,
+                        app_id=application_generate_entity.app_config.app_id,
-                    sandbox_provider=sandbox_provider,
+                        user_id=application_generate_entity.user_id,
-                )
+                        sandbox_provider=sandbox_provider,
-            else:
+                    )
-                sandbox = SandboxService.create(
+                else:
-                    tenant_id=application_generate_entity.app_config.tenant_id,
+                    sandbox = SandboxService.create(
-                    app_id=application_generate_entity.app_config.app_id,
+                        tenant_id=application_generate_entity.app_config.tenant_id,
-                    user_id=application_generate_entity.user_id,
+                        app_id=application_generate_entity.app_config.app_id,
-                    sandbox_id=conversation.id,
+                        user_id=application_generate_entity.user_id,
-                    sandbox_provider=sandbox_provider,
+                        sandbox_id=conversation.id,
-                )
+                        sandbox_provider=sandbox_provider,
-            graph_layers.append(SandboxLayer(sandbox))
+                    )
+                graph_layers.append(SandboxLayer(sandbox))
+            except ValueError as e:
+                queue_manager.publish_error(e, PublishFrom.APPLICATION_MANAGER)
 
         # new thread with request context and contextvars
         context = contextvars.copy_context()

api/core/app/apps/workflow/app_generator.py

@@ -321,22 +321,25 @@ class WorkflowAppGenerator(BaseAppGenerator):
             sandbox_provider = SandboxProviderService.get_sandbox_provider(
                 application_generate_entity.app_config.tenant_id
             )
-            if workflow.version == Workflow.VERSION_DRAFT:
+            try:
-                sandbox = SandboxService.create_draft(
+                if workflow.version == Workflow.VERSION_DRAFT:
-                    tenant_id=application_generate_entity.app_config.tenant_id,
+                    sandbox = SandboxService.create_draft(
-                    app_id=application_generate_entity.app_config.app_id,
+                        tenant_id=application_generate_entity.app_config.tenant_id,
-                    user_id=application_generate_entity.user_id,
+                        app_id=application_generate_entity.app_config.app_id,
-                    sandbox_provider=sandbox_provider,
+                        user_id=application_generate_entity.user_id,
-                )
+                        sandbox_provider=sandbox_provider,
-            else:
+                    )
-                sandbox = SandboxService.create(
+                else:
-                    tenant_id=application_generate_entity.app_config.tenant_id,
+                    sandbox = SandboxService.create(
-                    app_id=application_generate_entity.app_config.app_id,
+                        tenant_id=application_generate_entity.app_config.tenant_id,
-                    user_id=application_generate_entity.user_id,
+                        app_id=application_generate_entity.app_config.app_id,
-                    sandbox_id=application_generate_entity.workflow_execution_id,
+                        user_id=application_generate_entity.user_id,
-                    sandbox_provider=sandbox_provider,
+                        sandbox_id=application_generate_entity.workflow_execution_id,
-                )
+                        sandbox_provider=sandbox_provider,
-            graph_layers.append(SandboxLayer(sandbox=sandbox))
+                    )
+                graph_layers.append(SandboxLayer(sandbox=sandbox))
+            except ValueError as e:
+                queue_manager.publish_error(e, PublishFrom.APPLICATION_MANAGER)
 
         # new thread with request context and contextvars
         context = contextvars.copy_context()

api/core/sandbox/initializer/dify_cli_initializer.py

@@ -38,6 +38,7 @@ class DifyCliInitializer(AsyncSandboxInitializer):
 
     def initialize(self, sandbox: Sandbox) -> None:
         vm = sandbox.vm
+        # FIXME(Mairuis): should be more robust, effectively.
         binary = self._locator.resolve(vm.metadata.os, vm.metadata.arch)
 
         pipeline(vm).add(

api/core/workflow/enums.py

@@ -64,6 +64,7 @@ class NodeType(StrEnum):
     TRIGGER_PLUGIN = "trigger-plugin"
     HUMAN_INPUT = "human-input"
     COMMAND = "command"
+    FILE_UPLOAD = "file-upload"
     GROUP = "group"
 
     @property

api/core/workflow/nodes/command/node.py

@@ -17,7 +17,8 @@ from core.workflow.nodes.command.exc import CommandExecutionError
 
 logger = logging.getLogger(__name__)
 
-COMMAND_NODE_TIMEOUT_SECONDS = 60
+# FIXME(Mairuis): The timeout value is currently hardcoded and should be made configurable in the future.
+COMMAND_NODE_TIMEOUT_SECONDS = 60 * 10
 
 
 class CommandNode(Node[CommandNodeData]):
@@ -71,8 +72,6 @@ class CommandNode(Node[CommandNodeData]):
                 error_type="CommandNodeError",
             )
 
-        timeout = COMMAND_NODE_TIMEOUT_SECONDS if COMMAND_NODE_TIMEOUT_SECONDS > 0 else None
-
         try:
             sandbox.wait_ready(timeout=SANDBOX_READY_TIMEOUT)
             with with_connection(sandbox.vm) as conn:
@@ -81,7 +80,7 @@ class CommandNode(Node[CommandNodeData]):
                 sandbox_debug("command_node", "command", command)
 
                 future = submit_command(sandbox.vm, conn, command, cwd=working_directory)
-                result = future.result(timeout=timeout)
+                result = future.result(timeout=COMMAND_NODE_TIMEOUT_SECONDS)
 
                 outputs: dict[str, Any] = {
                     "stdout": result.stdout.decode("utf-8", errors="replace"),

api/core/workflow/nodes/file_upload/__init__.py

@@ -0,0 +1,4 @@
+from .entities import FileUploadNodeData
+from .node import FileUploadNode
+
+__all__ = ["FileUploadNode", "FileUploadNodeData"]

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

@@ -0,0 +1,7 @@
+from collections.abc import Sequence
+
+from core.workflow.nodes.base import BaseNodeData
+
+
+class FileUploadNodeData(BaseNodeData):
+    variable_selector: Sequence[str]

api/core/workflow/nodes/file_upload/exc.py

@@ -0,0 +1,6 @@
+class FileUploadNodeError(ValueError):
+    """Base exception for errors related to the FileUploadNode."""
+
+
+class FileUploadDownloadError(FileUploadNodeError):
+    """Exception raised when preparing file download in sandbox fails."""

api/core/workflow/nodes/file_upload/node.py

@@ -0,0 +1,244 @@
+import logging
+import os
+import posixpath
+from collections.abc import Mapping, Sequence
+from pathlib import PurePosixPath
+from typing import Any, cast
+
+from core.file import File, FileTransferMethod
+from core.sandbox.bash.session import SANDBOX_READY_TIMEOUT
+from core.sandbox.services.asset_download_service import AssetDownloadItem
+from core.variables import ArrayFileSegment
+from core.variables.segments import ArrayStringSegment, FileSegment
+from core.virtual_environment.__base.command_future import CommandCancelledError, CommandTimeoutError
+from core.virtual_environment.__base.helpers import pipeline
+from core.workflow.enums import NodeType, WorkflowNodeExecutionStatus
+from core.workflow.node_events import NodeRunResult
+from core.workflow.nodes.base.node import Node
+
+from .entities import FileUploadNodeData
+from .exc import FileUploadDownloadError, FileUploadNodeError
+
+logger = logging.getLogger(__name__)
+
+
+class FileUploadNode(Node[FileUploadNodeData]):
+    """Upload workflow file variables into sandbox via presigned URLs.
+
+    The node intentionally avoids streaming file bytes through Dify workers. For local/tool
+    files, it generates storage-backed presigned URLs and lets sandbox download directly.
+    """
+
+    node_type = NodeType.FILE_UPLOAD
+
+    @classmethod
+    def version(cls) -> str:
+        return "1"
+
+    @classmethod
+    def get_default_config(cls, filters: Mapping[str, object] | None = None) -> Mapping[str, object]:
+        _ = filters
+        return {
+            "type": "file-upload",
+            "config": {
+                "variable_selector": [],
+            },
+        }
+
+    def _run(self) -> NodeRunResult:
+        sandbox = self.graph_runtime_state.sandbox
+        variable_selector = self.node_data.variable_selector
+        inputs: dict[str, Any] = {"variable_selector": variable_selector}
+        if sandbox is None:
+            return NodeRunResult(
+                status=WorkflowNodeExecutionStatus.FAILED,
+                error="Sandbox not available for FileUploadNode.",
+                error_type="SandboxNotInitializedError",
+                inputs=inputs,
+            )
+
+        variable = self.graph_runtime_state.variable_pool.get(variable_selector)
+        if variable is None:
+            return NodeRunResult(
+                status=WorkflowNodeExecutionStatus.FAILED,
+                error=f"File variable not found for selector: {variable_selector}",
+                error_type=FileUploadNodeError.__name__,
+                inputs=inputs,
+            )
+
+        if variable.value and not isinstance(variable, ArrayFileSegment | FileSegment):
+            return NodeRunResult(
+                status=WorkflowNodeExecutionStatus.FAILED,
+                error=f"Variable {variable_selector} is not a file or file array",
+                error_type=FileUploadNodeError.__name__,
+                inputs=inputs,
+            )
+
+        files = self._normalize_files(variable.value)
+        process_data: dict[str, Any] = {
+            "file_count": len(files),
+            "files": [file.to_dict() for file in files],
+        }
+        if not files:
+            return NodeRunResult(
+                status=WorkflowNodeExecutionStatus.SUCCEEDED,
+                error="Selected file variable is empty.",
+                error_type=FileUploadNodeError.__name__,
+                inputs=inputs,
+                process_data=process_data,
+            )
+
+        try:
+            sandbox.wait_ready(timeout=SANDBOX_READY_TIMEOUT)
+            download_items: list[AssetDownloadItem] = self._build_download_items(files)
+            sandbox_paths = self._upload(sandbox.vm, download_items)
+            file_names = [PurePosixPath(path).name for path in sandbox_paths]
+            process_data = {
+                **process_data,
+                "sandbox_paths": sandbox_paths,
+                "file_names": file_names,
+            }
+
+            outputs: dict[str, Any]
+            if len(sandbox_paths) == 1:
+                outputs = {
+                    "sandbox_path": sandbox_paths[0],
+                    "file_name": file_names[0],
+                }
+            else:
+                outputs = {
+                    "sandbox_path": ArrayStringSegment(value=sandbox_paths),
+                    "file_name": ArrayStringSegment(value=file_names),
+                }
+            return NodeRunResult(
+                status=WorkflowNodeExecutionStatus.SUCCEEDED,
+                inputs=inputs,
+                process_data=process_data,
+                outputs=outputs,
+            )
+
+        except CommandTimeoutError:
+            return NodeRunResult(
+                status=WorkflowNodeExecutionStatus.FAILED,
+                error="File upload timeout",
+                error_type=CommandTimeoutError.__name__,
+                inputs=inputs,
+                process_data=process_data,
+            )
+        except CommandCancelledError:
+            return NodeRunResult(
+                status=WorkflowNodeExecutionStatus.FAILED,
+                error="File upload command was cancelled",
+                error_type=CommandCancelledError.__name__,
+                inputs=inputs,
+                process_data=process_data,
+            )
+        except FileUploadNodeError as e:
+            return NodeRunResult(
+                status=WorkflowNodeExecutionStatus.FAILED,
+                error=str(e),
+                error_type=type(e).__name__,
+                inputs=inputs,
+                process_data=process_data,
+            )
+        except Exception as e:
+            logger.exception("File upload node %s failed", self.id)
+            return NodeRunResult(
+                status=WorkflowNodeExecutionStatus.FAILED,
+                error=str(e),
+                error_type=type(e).__name__,
+                inputs=inputs,
+                process_data=process_data,
+            )
+
+    @classmethod
+    def _extract_variable_selector_to_variable_mapping(
+        cls,
+        *,
+        graph_config: Mapping[str, Any],
+        node_id: str,
+        node_data: Mapping[str, Any],
+    ) -> Mapping[str, Sequence[str]]:
+        _ = graph_config
+        typed_node_data = FileUploadNodeData.model_validate(node_data)
+        return {node_id + ".files": typed_node_data.variable_selector}
+
+    @staticmethod
+    def _normalize_files(value: Any) -> list[File]:
+        if isinstance(value, File):
+            return [value]
+        if isinstance(value, list):
+            list_value = cast(list[object], value)
+            files: list[File] = []
+            for idx in range(len(list_value)):
+                candidate = list_value[idx]
+                if not isinstance(candidate, File):
+                    return []
+                files.append(candidate)
+            return files
+        return []
+
+    def _build_download_items(self, files: Sequence[File]) -> list[AssetDownloadItem]:
+        used_paths: set[str] = set()
+        items: list[AssetDownloadItem] = []
+        for index, file in enumerate(files):
+            file_url = self._get_download_url(file)
+
+            filename = (file.filename or "").strip()
+            if not filename or filename in {".", ".."}:
+                filename = f"file-{index + 1}{file.extension or ''}"
+            filename = os.path.basename(filename)
+
+            if filename in used_paths:
+                stem = PurePosixPath(filename).stem or f"file-{index + 1}"
+                suffix = PurePosixPath(filename).suffix
+                dedupe = 1
+                while filename in used_paths:
+                    filename = f"{stem}_{dedupe}{suffix}"
+                    dedupe += 1
+
+            used_paths.add(filename)
+            items.append(AssetDownloadItem(path=filename, url=file_url))
+        return items
+
+    @staticmethod
+    def _normalize_path(path: str) -> str:
+        normalized = posixpath.normpath(path.strip()) if path else "."
+        if normalized.startswith("/"):
+            normalized = normalized.lstrip("/")
+        return normalized or "."
+
+    def _upload(self, vm: Any, items: list[AssetDownloadItem]) -> list[str]:
+        p = pipeline(vm)
+        out_paths: list[str] = []
+        for item in items:
+            out_path = self._normalize_path(item.path)
+            if out_path in ("", "."):
+                raise FileUploadDownloadError("Download item path must point to a file")
+            out_paths.append(out_path)
+            p.add(["curl", "-fsSL", item.url, "-o", out_path], error_message="Failed to download file")
+
+        try:
+            p.execute(timeout=None, raise_on_error=True)
+        except Exception as exc:
+            raise FileUploadDownloadError(str(exc)) from exc
+
+        return out_paths
+
+    def _get_download_url(self, file: File) -> str:
+        if file.transfer_method == FileTransferMethod.REMOTE_URL:
+            if not file.remote_url:
+                raise FileUploadDownloadError("Remote file URL is missing")
+            return file.remote_url
+
+        if file.transfer_method in (
+            FileTransferMethod.LOCAL_FILE,
+            FileTransferMethod.TOOL_FILE,
+            FileTransferMethod.DATASOURCE_FILE,
+        ):
+            download_url = file.generate_url(for_external=True)
+            if not download_url:
+                raise FileUploadDownloadError("Unable to generate download URL for file")
+            return download_url
+
+        raise FileUploadDownloadError(f"Unsupported file transfer method: {file.transfer_method}")

web/app/components/workflow/block-icon.tsx

@@ -58,6 +58,7 @@ const DEFAULT_ICON_MAP: Record<BlockEnum, React.ComponentType<{ className: strin
   [BlockEnum.LLM]: Llm,
   [BlockEnum.Code]: Code,
   [BlockEnum.Command]: WindowCursor,
+  [BlockEnum.FileUpload]: DocsExtractor,
   [BlockEnum.End]: End,
   [BlockEnum.IfElse]: IfElse,
   [BlockEnum.HttpRequest]: Http,
@@ -100,6 +101,7 @@ const ICON_CONTAINER_BG_COLOR_MAP: Record<string, string> = {
   [BlockEnum.LLM]: 'bg-util-colors-indigo-indigo-500',
   [BlockEnum.Code]: 'bg-util-colors-blue-blue-500',
   [BlockEnum.Command]: 'bg-util-colors-blue-blue-500',
+  [BlockEnum.FileUpload]: 'bg-util-colors-green-green-500',
   [BlockEnum.End]: 'bg-util-colors-warning-warning-500',
   [BlockEnum.IfElse]: 'bg-util-colors-cyan-cyan-500',
   [BlockEnum.Iteration]: 'bg-util-colors-cyan-cyan-500',

web/app/components/workflow/block-selector/constants.tsx

@@ -152,6 +152,11 @@ export const BLOCKS = [
     type: BlockEnum.Command,
     title: 'Command',
   },
+  {
+    classification: BlockClassificationEnum.Utilities,
+    type: BlockEnum.FileUpload,
+    title: 'File Upload',
+  },
   {
     classification: BlockClassificationEnum.Default,
     type: BlockEnum.Agent,

web/app/components/workflow/constants.ts

@@ -118,6 +118,7 @@ export const SUPPORT_OUTPUT_VARS_NODE = [
   BlockEnum.Code,
   BlockEnum.TemplateTransform,
   BlockEnum.Command,
+  BlockEnum.FileUpload,
   BlockEnum.HttpRequest,
   BlockEnum.Tool,
   BlockEnum.VariableAssigner,
@@ -216,6 +217,17 @@ export const COMMAND_OUTPUT_STRUCT: Var[] = [
   },
 ]
 
+export const FILE_UPLOAD_OUTPUT_STRUCT: Var[] = [
+  {
+    variable: 'sandbox_path',
+    type: VarType.string,
+  },
+  {
+    variable: 'file_name',
+    type: VarType.string,
+  },
+]
+
 export const QUESTION_CLASSIFIER_OUTPUT_STRUCT = [
   {
     variable: 'class_name',

web/app/components/workflow/constants/node.ts

@@ -2,9 +2,10 @@ import agentDefault from '@/app/components/workflow/nodes/agent/default'
 import assignerDefault from '@/app/components/workflow/nodes/assigner/default'
 import codeDefault from '@/app/components/workflow/nodes/code/default'
 import commandDefault from '@/app/components/workflow/nodes/command/default'
-
 import documentExtractorDefault from '@/app/components/workflow/nodes/document-extractor/default'
 
+import fileUploadDefault from '@/app/components/workflow/nodes/file-upload/default'
+
 import httpRequestDefault from '@/app/components/workflow/nodes/http/default'
 import humanInputDefault from '@/app/components/workflow/nodes/human-input/default'
 import ifElseDefault from '@/app/components/workflow/nodes/if-else/default'
@@ -36,6 +37,7 @@ export const WORKFLOW_COMMON_NODES = [
   loopEndDefault,
   codeDefault,
   commandDefault,
+  fileUploadDefault,
   templateTransformDefault,
   variableAggregatorDefault,
   documentExtractorDefault,

web/app/components/workflow/nodes/_base/components/variable/utils.ts

@@ -4,6 +4,7 @@ import type { CodeNodeType } from '../../../code/types'
 import type { CommandNodeType } from '../../../command/types'
 import type { DocExtractorNodeType } from '../../../document-extractor/types'
 import type { EndNodeType } from '../../../end/types'
+import type { FileUploadNodeType } from '../../../file-upload/types'
 import type { HttpNodeType } from '../../../http/types'
 import type { IfElseNodeType } from '../../../if-else/types'
 import type { IterationNodeType } from '../../../iteration/types'
@@ -42,6 +43,7 @@ import {
   AGENT_OUTPUT_STRUCT,
   COMMAND_OUTPUT_STRUCT,
   FILE_STRUCT,
+  FILE_UPLOAD_OUTPUT_STRUCT,
   getGlobalVars,
   HTTP_REQUEST_OUTPUT_STRUCT,
   HUMAN_INPUT_OUTPUT_STRUCT,
@@ -471,6 +473,22 @@ const formatItem = (
       break
     }
 
+    case BlockEnum.FileUpload: {
+      res.vars = (data as FileUploadNodeType).is_array_file
+        ? [
+            {
+              variable: 'sandbox_path',
+              type: VarType.arrayString,
+            },
+            {
+              variable: 'file_name',
+              type: VarType.arrayString,
+            },
+          ]
+        : FILE_UPLOAD_OUTPUT_STRUCT
+      break
+    }
+
     case BlockEnum.QuestionClassifier: {
       res.vars = QUESTION_CLASSIFIER_OUTPUT_STRUCT
       break
@@ -1538,6 +1556,11 @@ export const getNodeUsedVars = (node: Node): ValueSelector[] => {
       ])
       break
     }
+    case BlockEnum.FileUpload: {
+      const payload = data as FileUploadNodeType
+      res = [payload.variable_selector]
+      break
+    }
     case BlockEnum.QuestionClassifier: {
       const payload = data as QuestionClassifierNodeType
       res = [payload.query_variable_selector]
@@ -1933,6 +1956,12 @@ export const updateNodeVars = (
         )
         break
       }
+      case BlockEnum.FileUpload: {
+        const payload = data as FileUploadNodeType
+        if (payload.variable_selector.join('.') === oldVarSelector.join('.'))
+          payload.variable_selector = newVarSelector
+        break
+      }
       case BlockEnum.QuestionClassifier: {
         const payload = data as QuestionClassifierNodeType
         if (
@@ -2232,6 +2261,17 @@ export const getNodeOutputVars = (
       break
     }
 
+    case BlockEnum.FileUpload: {
+      if ((data as FileUploadNodeType).is_array_file) {
+        res.push([id, 'sandbox_path'])
+        res.push([id, 'file_name'])
+      }
+      else {
+        varsToValueSelectorList(FILE_UPLOAD_OUTPUT_STRUCT, [id], res)
+      }
+      break
+    }
+
     case BlockEnum.QuestionClassifier: {
       varsToValueSelectorList(QUESTION_CLASSIFIER_OUTPUT_STRUCT, [id], res)
       break

web/app/components/workflow/nodes/_base/components/workflow-panel/last-run/use-last-run.ts

@@ -20,6 +20,7 @@ import useAgentSingleRunFormParams from '@/app/components/workflow/nodes/agent/u
 import useVariableAssignerSingleRunFormParams from '@/app/components/workflow/nodes/assigner/use-single-run-form-params'
 import useCodeSingleRunFormParams from '@/app/components/workflow/nodes/code/use-single-run-form-params'
 import useDocExtractorSingleRunFormParams from '@/app/components/workflow/nodes/document-extractor/use-single-run-form-params'
+import useFileUploadSingleRunFormParams from '@/app/components/workflow/nodes/file-upload/use-single-run-form-params'
 import useHttpRequestSingleRunFormParams from '@/app/components/workflow/nodes/http/use-single-run-form-params'
 import useHumanInputSingleRunFormParams from '@/app/components/workflow/nodes/human-input/hooks/use-single-run-form-params'
 import useIfElseSingleRunFormParams from '@/app/components/workflow/nodes/if-else/use-single-run-form-params'
@@ -51,6 +52,7 @@ const singleRunFormParamsHooks: Record<BlockEnum, any> = {
   [BlockEnum.KnowledgeRetrieval]: useKnowledgeRetrievalSingleRunFormParams,
   [BlockEnum.Code]: useCodeSingleRunFormParams,
   [BlockEnum.Command]: undefined,
+  [BlockEnum.FileUpload]: useFileUploadSingleRunFormParams,
   [BlockEnum.TemplateTransform]: useTemplateTransformSingleRunFormParams,
   [BlockEnum.QuestionClassifier]: useQuestionClassifierSingleRunFormParams,
   [BlockEnum.HttpRequest]: useHttpRequestSingleRunFormParams,
@@ -93,6 +95,7 @@ const getDataForCheckMoreHooks: Record<BlockEnum, any> = {
   [BlockEnum.KnowledgeRetrieval]: undefined,
   [BlockEnum.Code]: undefined,
   [BlockEnum.Command]: undefined,
+  [BlockEnum.FileUpload]: undefined,
   [BlockEnum.TemplateTransform]: undefined,
   [BlockEnum.QuestionClassifier]: undefined,
   [BlockEnum.HttpRequest]: undefined,

web/app/components/workflow/nodes/_base/hooks/use-one-step-run.ts

@@ -24,6 +24,7 @@ import { getNodeInfoById, isConversationVar, isENV, isSystemVar, toNodeOutputVar
 import Assigner from '@/app/components/workflow/nodes/assigner/default'
 import CodeDefault from '@/app/components/workflow/nodes/code/default'
 import DocumentExtractorDefault from '@/app/components/workflow/nodes/document-extractor/default'
+import FileUploadDefault from '@/app/components/workflow/nodes/file-upload/default'
 import HTTPDefault from '@/app/components/workflow/nodes/http/default'
 import HumanInputDefault from '@/app/components/workflow/nodes/human-input/default'
 import IfElseDefault from '@/app/components/workflow/nodes/if-else/default'
@@ -70,6 +71,7 @@ const { checkValid: checkAssignerValid } = Assigner
 const { checkValid: checkParameterExtractorValid } = ParameterExtractorDefault
 const { checkValid: checkIterationValid } = IterationDefault
 const { checkValid: checkDocumentExtractorValid } = DocumentExtractorDefault
+const { checkValid: checkFileUploadValid } = FileUploadDefault
 const { checkValid: checkLoopValid } = LoopDefault
 const { checkValid: checkHumanInputValid } = HumanInputDefault
 
@@ -88,6 +90,7 @@ const checkValidFns: Partial<Record<BlockEnum, Function>> = {
   [BlockEnum.ParameterExtractor]: checkParameterExtractorValid,
   [BlockEnum.Iteration]: checkIterationValid,
   [BlockEnum.DocExtractor]: checkDocumentExtractorValid,
+  [BlockEnum.FileUpload]: checkFileUploadValid,
   [BlockEnum.Loop]: checkLoopValid,
   [BlockEnum.HumanInput]: checkHumanInputValid,
 }

web/app/components/workflow/nodes/components.ts

@@ -16,6 +16,8 @@ import DocExtractorNode from './document-extractor/node'
 import DocExtractorPanel from './document-extractor/panel'
 import EndNode from './end/node'
 import EndPanel from './end/panel'
+import FileUploadNode from './file-upload/node'
+import FileUploadPanel from './file-upload/panel'
 import GroupNode from './group/node'
 import GroupPanel from './group/panel'
 import HttpNode from './http/node'
@@ -83,6 +85,7 @@ export const NodeComponentMap: Record<string, ComponentType<any>> = {
   [BlockEnum.TriggerWebhook]: TriggerWebhookNode,
   [BlockEnum.TriggerPlugin]: TriggerPluginNode,
   [BlockEnum.Command]: CommandNode,
+  [BlockEnum.FileUpload]: FileUploadNode,
   [BlockEnum.Group]: GroupNode,
 }
 
@@ -114,5 +117,6 @@ export const PanelComponentMap: Record<string, ComponentType<any>> = {
   [BlockEnum.TriggerWebhook]: TriggerWebhookPanel,
   [BlockEnum.TriggerPlugin]: TriggerPluginPanel,
   [BlockEnum.Command]: CommandPanel,
+  [BlockEnum.FileUpload]: FileUploadPanel,
   [BlockEnum.Group]: GroupPanel,
 }

web/app/components/workflow/nodes/file-upload/default.ts

@@ -0,0 +1,35 @@
+import type { NodeDefault } from '../../types'
+import type { FileUploadNodeType } from './types'
+import { BlockClassificationEnum } from '@/app/components/workflow/block-selector/types'
+import { BlockEnum } from '@/app/components/workflow/types'
+import { genNodeMetaData } from '@/app/components/workflow/utils'
+
+const i18nPrefix = 'errorMsg'
+
+const metaData = genNodeMetaData({
+  classification: BlockClassificationEnum.Utilities,
+  sort: 3,
+  type: BlockEnum.FileUpload,
+})
+
+const nodeDefault: NodeDefault<FileUploadNodeType> = {
+  metaData,
+  defaultValue: {
+    variable_selector: [],
+    is_array_file: false,
+  },
+  checkValid(payload: FileUploadNodeType, t: (key: string, options?: Record<string, unknown>) => string) {
+    let errorMessages = ''
+    const { variable_selector: variable } = payload
+
+    if (!errorMessages && !variable?.length)
+      errorMessages = t(`${i18nPrefix}.fieldRequired`, { ns: 'workflow', field: t(`${i18nPrefix}.fields.fileVariable`, { ns: 'workflow' }) })
+
+    return {
+      isValid: !errorMessages,
+      errorMessage: errorMessages,
+    }
+  },
+}
+
+export default nodeDefault

web/app/components/workflow/nodes/file-upload/node.tsx

@@ -0,0 +1,12 @@
+import type { FC } from 'react'
+import type { FileUploadNodeType } from './types'
+import type { NodeProps } from '@/app/components/workflow/types'
+import * as React from 'react'
+
+const Node: FC<NodeProps<FileUploadNodeType>> = () => {
+  return (
+    <div></div>
+  )
+}
+
+export default React.memo(Node)

web/app/components/workflow/nodes/file-upload/panel.tsx

@@ -0,0 +1,65 @@
+import type { FC } from 'react'
+import type { FileUploadNodeType } from './types'
+import type { NodePanelProps } from '@/app/components/workflow/types'
+import * as React from 'react'
+import { useTranslation } from 'react-i18next'
+import Field from '@/app/components/workflow/nodes/_base/components/field'
+import OutputVars, { VarItem } from '@/app/components/workflow/nodes/_base/components/output-vars'
+import Split from '@/app/components/workflow/nodes/_base/components/split'
+import VarReferencePicker from '@/app/components/workflow/nodes/_base/components/variable/var-reference-picker'
+import useConfig from './use-config'
+
+const i18nPrefix = 'nodes.fileUpload'
+
+const Panel: FC<NodePanelProps<FileUploadNodeType>> = ({
+  id,
+  data,
+}) => {
+  const { t } = useTranslation()
+  const {
+    readOnly,
+    inputs,
+    handleVarChanges,
+    filterVar,
+  } = useConfig(id, data)
+
+  return (
+    <div className="mt-2">
+      <div className="space-y-4 px-4 pb-4">
+        <Field
+          title={t(`${i18nPrefix}.inputVar`, { ns: 'workflow' })}
+          required
+        >
+          <VarReferencePicker
+            readonly={readOnly}
+            nodeId={id}
+            isShowNodeName
+            value={inputs.variable_selector || []}
+            onChange={handleVarChanges}
+            filterVar={filterVar}
+            typePlaceHolder="File | Array[File]"
+          />
+        </Field>
+      </div>
+      <Split />
+      <div>
+        <OutputVars>
+          <>
+            <VarItem
+              name="sandbox_path"
+              type={inputs.is_array_file ? 'array[string]' : 'string'}
+              description={t(`${i18nPrefix}.outputVars.sandboxPath`, { ns: 'workflow' })}
+            />
+            <VarItem
+              name="file_name"
+              type={inputs.is_array_file ? 'array[string]' : 'string'}
+              description={t(`${i18nPrefix}.outputVars.fileName`, { ns: 'workflow' })}
+            />
+          </>
+        </OutputVars>
+      </div>
+    </div>
+  )
+}
+
+export default React.memo(Panel)

web/app/components/workflow/nodes/file-upload/types.ts

@@ -0,0 +1,6 @@
+import type { CommonNodeType, ValueSelector } from '@/app/components/workflow/types'
+
+export type FileUploadNodeType = CommonNodeType & {
+  variable_selector: ValueSelector
+  is_array_file: boolean
+}

web/app/components/workflow/nodes/file-upload/use-config.ts

@@ -0,0 +1,65 @@
+import type { ValueSelector, Var } from '../../types'
+import type { FileUploadNodeType } from './types'
+import { produce } from 'immer'
+import { useCallback, useMemo } from 'react'
+import { useStoreApi } from 'reactflow'
+import {
+  useIsChatMode,
+  useNodesReadOnly,
+  useWorkflow,
+  useWorkflowVariables,
+} from '@/app/components/workflow/hooks'
+import useNodeCrud from '@/app/components/workflow/nodes/_base/hooks/use-node-crud'
+import { VarType } from '../../types'
+
+const useConfig = (id: string, payload: FileUploadNodeType) => {
+  const { nodesReadOnly: readOnly } = useNodesReadOnly()
+  const { inputs, setInputs } = useNodeCrud<FileUploadNodeType>(id, payload)
+
+  const filterVar = useCallback((varPayload: Var) => {
+    return varPayload.type === VarType.file || varPayload.type === VarType.arrayFile
+  }, [])
+
+  const isChatMode = useIsChatMode()
+  const store = useStoreApi()
+  const { getBeforeNodesInSameBranch } = useWorkflow()
+  const { getNodes } = store.getState()
+  const currentNode = getNodes().find(n => n.id === id)
+  const isInIteration = payload.isInIteration
+  const iterationNode = isInIteration ? getNodes().find(n => n.id === currentNode!.parentId) : null
+  const isInLoop = payload.isInLoop
+  const loopNode = isInLoop ? getNodes().find(n => n.id === currentNode!.parentId) : null
+
+  const availableNodes = useMemo(() => {
+    return getBeforeNodesInSameBranch(id)
+  }, [getBeforeNodesInSameBranch, id])
+
+  const { getCurrentVariableType } = useWorkflowVariables()
+  const getType = useCallback((variable?: ValueSelector) => {
+    const varType = getCurrentVariableType({
+      parentNode: isInIteration ? iterationNode : loopNode,
+      valueSelector: variable || [],
+      availableNodes,
+      isChatMode,
+      isConstant: false,
+    })
+    return varType
+  }, [getCurrentVariableType, isInIteration, iterationNode, loopNode, availableNodes, isChatMode])
+
+  const handleVarChanges = useCallback((variable: ValueSelector | string) => {
+    const newInputs = produce(inputs, (draft) => {
+      draft.variable_selector = variable as ValueSelector
+      draft.is_array_file = getType(draft.variable_selector) === VarType.arrayFile
+    })
+    setInputs(newInputs)
+  }, [inputs, setInputs, getType])
+
+  return {
+    readOnly,
+    inputs,
+    filterVar,
+    handleVarChanges,
+  }
+}
+
+export default useConfig

web/app/components/workflow/nodes/file-upload/use-single-run-form-params.ts

@@ -0,0 +1,66 @@
+import type { RefObject } from 'react'
+import type { FileUploadNodeType } from './types'
+import type { InputVar, Variable } from '@/app/components/workflow/types'
+import { useCallback, useMemo } from 'react'
+import { useTranslation } from 'react-i18next'
+import { InputVarType } from '@/app/components/workflow/types'
+
+const i18nPrefix = 'nodes.fileUpload'
+
+type Params = {
+  id: string
+  payload: FileUploadNodeType
+  runInputData: Record<string, unknown>
+  runInputDataRef: RefObject<Record<string, unknown>>
+  getInputVars: (textList: string[]) => InputVar[]
+  setRunInputData: (data: Record<string, unknown>) => void
+  toVarInputs: (variables: Variable[]) => InputVar[]
+}
+
+const useSingleRunFormParams = ({
+  payload,
+  runInputData,
+  setRunInputData,
+}: Params) => {
+  const { t } = useTranslation()
+  const files = runInputData.files
+
+  const setFiles = useCallback((newFiles: []) => {
+    setRunInputData({
+      ...runInputData,
+      files: newFiles,
+    })
+  }, [runInputData, setRunInputData])
+
+  const forms = useMemo(() => {
+    return [
+      {
+        inputs: [{
+          label: t(`${i18nPrefix}.inputVar`, { ns: 'workflow' })!,
+          variable: 'files',
+          type: payload.is_array_file ? InputVarType.multiFiles : InputVarType.singleFile,
+          required: true,
+        }],
+        values: { files },
+        onChange: (keyValue: Record<string, unknown>) => setFiles((keyValue.files as []) || []),
+      },
+    ]
+  }, [files, payload.is_array_file, setFiles, t])
+
+  const getDependentVars = () => {
+    return [payload.variable_selector]
+  }
+
+  const getDependentVar = (variable: string) => {
+    if (variable === 'files')
+      return payload.variable_selector
+  }
+
+  return {
+    forms,
+    getDependentVars,
+    getDependentVar,
+  }
+}
+
+export default useSingleRunFormParams

web/app/components/workflow/types.ts

@@ -59,6 +59,7 @@ export enum BlockEnum {
   TriggerWebhook = 'trigger-webhook',
   TriggerPlugin = 'trigger-plugin',
   Command = 'command',
+  FileUpload = 'file-upload',
 }
 
 export enum ControlMode {

web/app/components/workflow/utils/workflow.ts

@@ -21,6 +21,7 @@ export const canRunBySingle = (nodeType: BlockEnum, isChildNode: boolean) => {
     || nodeType === BlockEnum.KnowledgeRetrieval
     || nodeType === BlockEnum.Code
     || nodeType === BlockEnum.Command
+    || nodeType === BlockEnum.FileUpload
     || nodeType === BlockEnum.TemplateTransform
     || nodeType === BlockEnum.QuestionClassifier
     || nodeType === BlockEnum.HttpRequest

web/i18n/en-US/workflow.json

@@ -8,6 +8,7 @@
   "blocks.datasource-empty": "Empty Data Source",
   "blocks.document-extractor": "Doc Extractor",
   "blocks.end": "Output",
+  "blocks.file-upload": "File Upload",
   "blocks.group": "Group",
   "blocks.http-request": "HTTP Request",
   "blocks.human-input": "Human Input",
@@ -41,6 +42,7 @@
   "blocksAbout.datasource-empty": "Empty Data Source placeholder",
   "blocksAbout.document-extractor": "Used to parse uploaded documents into text content that is easily understandable by LLM.",
   "blocksAbout.end": "Define the output and result type of a workflow",
+  "blocksAbout.file-upload": "Download selected file variables into sandbox as local paths",
   "blocksAbout.group": "Group multiple nodes together for better organization",
   "blocksAbout.http-request": "Allow server requests to be sent over the HTTP protocol",
   "blocksAbout.human-input": "Ask for human to confirm before generating the next step",
@@ -341,6 +343,7 @@
   "errorMsg.fieldRequired": "{{field}} is required",
   "errorMsg.fields.code": "Code",
   "errorMsg.fields.command": "Command",
+  "errorMsg.fields.fileVariable": "File Variable",
   "errorMsg.fields.model": "Model",
   "errorMsg.fields.rerankModel": "A configured Rerank Model",
   "errorMsg.fields.variable": "Variable Name",
@@ -515,6 +518,9 @@
   "nodes.end.type.none": "None",
   "nodes.end.type.plain-text": "Plain Text",
   "nodes.end.type.structured": "Structured",
+  "nodes.fileUpload.inputVar": "File Variable",
+  "nodes.fileUpload.outputVars.fileName": "File name in sandbox",
+  "nodes.fileUpload.outputVars.sandboxPath": "Sandbox local file path",
   "nodes.http.api": "API",
   "nodes.http.apiPlaceholder": "Enter URL, type ‘/’ insert variable",
   "nodes.http.authorization.api-key": "API-Key",