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import logging
import uuid
from enum import StrEnum
from typing import Optional
from urllib.parse import urlparse
from uuid import uuid4
import yaml # type: ignore
from packaging import version
from pydantic import BaseModel
from sqlalchemy import select
from sqlalchemy.orm import Session
from core.helper import ssrf_proxy
from events.app_event import app_model_config_was_updated, app_was_created
from extensions.ext_redis import redis_client
from factories import variable_factory
from models import Account, App, AppMode
from models.model import AppModelConfig
from services.workflow_service import WorkflowService
logger = logging.getLogger(__name__)
IMPORT_INFO_REDIS_KEY_PREFIX = "app_import_info:"
IMPORT_INFO_REDIS_EXPIRY = 180 # 3 minutes
CURRENT_DSL_VERSION = "0.1.5"
class ImportMode(StrEnum):
YAML_CONTENT = "yaml-content"
YAML_URL = "yaml-url"
class ImportStatus(StrEnum):
COMPLETED = "completed"
COMPLETED_WITH_WARNINGS = "completed-with-warnings"
PENDING = "pending"
FAILED = "failed"
class Import(BaseModel):
id: str
status: ImportStatus
app_id: Optional[str] = None
current_dsl_version: str = CURRENT_DSL_VERSION
imported_dsl_version: str = ""
error: str = ""
def _check_version_compatibility(imported_version: str) -> ImportStatus:
"""Determine import status based on version comparison"""
try:
current_ver = version.parse(CURRENT_DSL_VERSION)
imported_ver = version.parse(imported_version)
except version.InvalidVersion:
return ImportStatus.FAILED
# Compare major version and minor version
if current_ver.major != imported_ver.major or current_ver.minor != imported_ver.minor:
return ImportStatus.PENDING
if current_ver.micro != imported_ver.micro:
return ImportStatus.COMPLETED_WITH_WARNINGS
return ImportStatus.COMPLETED
class PendingData(BaseModel):
import_mode: str
yaml_content: str
name: str | None
description: str | None
icon_type: str | None
icon: str | None
icon_background: str | None
app_id: str | None
class AppDslService:
def __init__(self, session: Session):
self._session = session
def import_app(
self,
*,
account: Account,
import_mode: str,
yaml_content: Optional[str] = None,
yaml_url: Optional[str] = None,
name: Optional[str] = None,
description: Optional[str] = None,
icon_type: Optional[str] = None,
icon: Optional[str] = None,
icon_background: Optional[str] = None,
app_id: Optional[str] = None,
) -> Import:
"""Import an app from YAML content or URL."""
import_id = str(uuid.uuid4())
# Validate import mode
try:
mode = ImportMode(import_mode)
except ValueError:
raise ValueError(f"Invalid import_mode: {import_mode}")
# Get YAML content
content: str = ""
if mode == ImportMode.YAML_URL:
if not yaml_url:
return Import(
id=import_id,
status=ImportStatus.FAILED,
error="yaml_url is required when import_mode is yaml-url",
)
try:
max_size = 10 * 1024 * 1024 # 10MB
parsed_url = urlparse(yaml_url)
if (
parsed_url.scheme == "https"
and parsed_url.netloc == "github.com"
and parsed_url.path.endswith((".yml", ".yaml"))
):
yaml_url = yaml_url.replace("https://github.com", "https://raw.githubusercontent.com")
yaml_url = yaml_url.replace("/blob/", "/")
response = ssrf_proxy.get(yaml_url.strip(), follow_redirects=True, timeout=(10, 10))
response.raise_for_status()
content = response.content.decode()
if len(content) > max_size:
return Import(
id=import_id,
status=ImportStatus.FAILED,
error="File size exceeds the limit of 10MB",
)
if not content:
return Import(
id=import_id,
status=ImportStatus.FAILED,
error="Empty content from url",
)
except Exception as e:
return Import(
id=import_id,
status=ImportStatus.FAILED,
error=f"Error fetching YAML from URL: {str(e)}",
)
elif mode == ImportMode.YAML_CONTENT:
if not yaml_content:
return Import(
id=import_id,
status=ImportStatus.FAILED,
error="yaml_content is required when import_mode is yaml-content",
)
content = yaml_content
# Process YAML content
try:
# Parse YAML to validate format
data = yaml.safe_load(content)
if not isinstance(data, dict):
return Import(
id=import_id,
status=ImportStatus.FAILED,
error="Invalid YAML format: content must be a mapping",
)
# Validate and fix DSL version
if not data.get("version"):
data["version"] = "0.1.0"
if not data.get("kind") or data.get("kind") != "app":
data["kind"] = "app"
imported_version = data.get("version", "0.1.0")
# check if imported_version is a float-like string
if not isinstance(imported_version, str):
raise ValueError(f"Invalid version type, expected str, got {type(imported_version)}")
status = _check_version_compatibility(imported_version)
# Extract app data
app_data = data.get("app")
if not app_data:
return Import(
id=import_id,
status=ImportStatus.FAILED,
error="Missing app data in YAML content",
)
# If app_id is provided, check if it exists
app = None
if app_id:
stmt = select(App).where(App.id == app_id, App.tenant_id == account.current_tenant_id)
app = self._session.scalar(stmt)
if not app:
return Import(
id=import_id,
status=ImportStatus.FAILED,
error="App not found",
)
if app.mode not in [AppMode.WORKFLOW.value, AppMode.ADVANCED_CHAT.value]:
return Import(
id=import_id,
status=ImportStatus.FAILED,
error="Only workflow or advanced chat apps can be overwritten",
)
# If major version mismatch, store import info in Redis
if status == ImportStatus.PENDING:
panding_data = PendingData(
import_mode=import_mode,
yaml_content=content,
name=name,
description=description,
icon_type=icon_type,
icon=icon,
icon_background=icon_background,
app_id=app_id,
)
redis_client.setex(
f"{IMPORT_INFO_REDIS_KEY_PREFIX}{import_id}",
IMPORT_INFO_REDIS_EXPIRY,
panding_data.model_dump_json(),
)
return Import(
id=import_id,
status=status,
app_id=app_id,
imported_dsl_version=imported_version,
)
# Create or update app
app = self._create_or_update_app(
app=app,
data=data,
account=account,
name=name,
description=description,
icon_type=icon_type,
icon=icon,
icon_background=icon_background,
)
return Import(
id=import_id,
status=status,
app_id=app.id,
imported_dsl_version=imported_version,
)
except yaml.YAMLError as e:
return Import(
id=import_id,
status=ImportStatus.FAILED,
error=f"Invalid YAML format: {str(e)}",
)
except Exception as e:
logger.exception("Failed to import app")
return Import(
id=import_id,
status=ImportStatus.FAILED,
error=str(e),
)
def confirm_import(self, *, import_id: str, account: Account) -> Import:
"""
Confirm an import that requires confirmation
"""
redis_key = f"{IMPORT_INFO_REDIS_KEY_PREFIX}{import_id}"
pending_data = redis_client.get(redis_key)
if not pending_data:
return Import(
id=import_id,
status=ImportStatus.FAILED,
error="Import information expired or does not exist",
)
try:
if not isinstance(pending_data, str | bytes):
return Import(
id=import_id,
status=ImportStatus.FAILED,
error="Invalid import information",
)
pending_data = PendingData.model_validate_json(pending_data)
data = yaml.safe_load(pending_data.yaml_content)
app = None
if pending_data.app_id:
stmt = select(App).where(App.id == pending_data.app_id, App.tenant_id == account.current_tenant_id)
app = self._session.scalar(stmt)
# Create or update app
app = self._create_or_update_app(
app=app,
data=data,
account=account,
name=pending_data.name,
description=pending_data.description,
icon_type=pending_data.icon_type,
icon=pending_data.icon,
icon_background=pending_data.icon_background,
)
# Delete import info from Redis
redis_client.delete(redis_key)
return Import(
id=import_id,
status=ImportStatus.COMPLETED,
app_id=app.id,
current_dsl_version=CURRENT_DSL_VERSION,
imported_dsl_version=data.get("version", "0.1.0"),
)
except Exception as e:
logger.exception("Error confirming import")
return Import(
id=import_id,
status=ImportStatus.FAILED,
error=str(e),
)
def _create_or_update_app(
self,
*,
app: Optional[App],
data: dict,
account: Account,
name: Optional[str] = None,
description: Optional[str] = None,
icon_type: Optional[str] = None,
icon: Optional[str] = None,
icon_background: Optional[str] = None,
) -> App:
"""Create a new app or update an existing one."""
app_data = data.get("app", {})
app_mode = app_data.get("mode")
if not app_mode:
raise ValueError("loss app mode")
app_mode = AppMode(app_mode)
# Set icon type
icon_type_value = icon_type or app_data.get("icon_type")
if icon_type_value in ["emoji", "link"]:
icon_type = icon_type_value
else:
icon_type = "emoji"
icon = icon or str(app_data.get("icon", ""))
if app:
# Update existing app
app.name = name or app_data.get("name", app.name)
app.description = description or app_data.get("description", app.description)
app.icon_type = icon_type
app.icon = icon
app.icon_background = icon_background or app_data.get("icon_background", app.icon_background)
app.updated_by = account.id
else:
if account.current_tenant_id is None:
raise ValueError("Current tenant is not set")
# Create new app
app = App()
app.id = str(uuid4())
app.tenant_id = account.current_tenant_id
app.mode = app_mode.value
app.name = name or app_data.get("name", "")
app.description = description or app_data.get("description", "")
app.icon_type = icon_type
app.icon = icon
app.icon_background = icon_background or app_data.get("icon_background", "#FFFFFF")
app.enable_site = True
app.enable_api = True
app.use_icon_as_answer_icon = app_data.get("use_icon_as_answer_icon", False)
app.created_by = account.id
app.updated_by = account.id
self._session.add(app)
self._session.commit()
app_was_created.send(app, account=account)
# Initialize app based on mode
if app_mode in {AppMode.ADVANCED_CHAT, AppMode.WORKFLOW}:
workflow_data = data.get("workflow")
if not workflow_data or not isinstance(workflow_data, dict):
raise ValueError("Missing workflow data for workflow/advanced chat app")
environment_variables_list = workflow_data.get("environment_variables", [])
environment_variables = [
variable_factory.build_environment_variable_from_mapping(obj) for obj in environment_variables_list
]
conversation_variables_list = workflow_data.get("conversation_variables", [])
conversation_variables = [
variable_factory.build_conversation_variable_from_mapping(obj) for obj in conversation_variables_list
]
workflow_service = WorkflowService()
current_draft_workflow = workflow_service.get_draft_workflow(app_model=app)
if current_draft_workflow:
unique_hash = current_draft_workflow.unique_hash
else:
unique_hash = None
workflow_service.sync_draft_workflow(
app_model=app,
graph=workflow_data.get("graph", {}),
features=workflow_data.get("features", {}),
unique_hash=unique_hash,
account=account,
environment_variables=environment_variables,
conversation_variables=conversation_variables,
)
elif app_mode in {AppMode.CHAT, AppMode.AGENT_CHAT, AppMode.COMPLETION}:
# Initialize model config
model_config = data.get("model_config")
if not model_config or not isinstance(model_config, dict):
raise ValueError("Missing model_config for chat/agent-chat/completion app")
# Initialize or update model config
if not app.app_model_config:
app_model_config = AppModelConfig().from_model_config_dict(model_config)
app_model_config.id = str(uuid4())
app_model_config.app_id = app.id
app_model_config.created_by = account.id
app_model_config.updated_by = account.id
app.app_model_config_id = app_model_config.id
self._session.add(app_model_config)
app_model_config_was_updated.send(app, app_model_config=app_model_config)
else:
raise ValueError("Invalid app mode")
return app
@classmethod
def export_dsl(cls, app_model: App, include_secret: bool = False) -> str:
"""
Export app
:param app_model: App instance
:return:
"""
app_mode = AppMode.value_of(app_model.mode)
export_data = {
"version": CURRENT_DSL_VERSION,
"kind": "app",
"app": {
"name": app_model.name,
"mode": app_model.mode,
"icon": "🤖" if app_model.icon_type == "image" else app_model.icon,
"icon_background": "#FFEAD5" if app_model.icon_type == "image" else app_model.icon_background,
"description": app_model.description,
"use_icon_as_answer_icon": app_model.use_icon_as_answer_icon,
},
}
if app_mode in {AppMode.ADVANCED_CHAT, AppMode.WORKFLOW}:
cls._append_workflow_export_data(
export_data=export_data, app_model=app_model, include_secret=include_secret
)
else:
cls._append_model_config_export_data(export_data, app_model)
return yaml.dump(export_data, allow_unicode=True) # type: ignore
@classmethod
def _append_workflow_export_data(cls, *, export_data: dict, app_model: App, include_secret: bool) -> None:
"""
Append workflow export data
:param export_data: export data
:param app_model: App instance
"""
workflow_service = WorkflowService()
workflow = workflow_service.get_draft_workflow(app_model)
if not workflow:
raise ValueError("Missing draft workflow configuration, please check.")
export_data["workflow"] = workflow.to_dict(include_secret=include_secret)
@classmethod
def _append_model_config_export_data(cls, export_data: dict, app_model: App) -> None:
"""
Append model config export data
:param export_data: export data
:param app_model: App instance
"""
app_model_config = app_model.app_model_config
if not app_model_config:
raise ValueError("Missing app configuration, please check.")
export_data["model_config"] = app_model_config.to_dict()
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