dify/api/configs/app_config.py

from pydantic import computed_field
from pydantic_settings import BaseSettings, SettingsConfigDict

from configs.deploy import DeploymentConfig
from configs.enterprise import EnterpriseFeatureConfig
from configs.extra import ExtraServiceConfig
from configs.feature import FeatureConfig
from configs.middleware import MiddlewareConfig
from configs.packaging import PackagingInfo


# TODO: Both `BaseModel` and `BaseSettings` has `model_config` attribute but they are in different types.
# This inheritance is depends on the order of the classes.
# It is better to use `BaseSettings` as the base class.
class DifyConfig(
    # based on pydantic-settings
    BaseSettings,

    # Packaging info
    PackagingInfo,

    # Deployment configs
    DeploymentConfig,

    # Feature configs
    FeatureConfig,

    # Middleware configs
    MiddlewareConfig,

    # Extra service configs
    ExtraServiceConfig,

    # Enterprise feature configs
    # **Before using, please contact business@dify.ai by email to inquire about licensing matters.**
    EnterpriseFeatureConfig,
):

    model_config = SettingsConfigDict(
        # read from dotenv format config file
        env_file='.env',
        env_file_encoding='utf-8',

        # ignore extra attributes
        extra='ignore',
    )

    CODE_MAX_NUMBER: int = 9223372036854775807
    CODE_MIN_NUMBER: int = -9223372036854775808
    CODE_MAX_STRING_LENGTH: int = 80000
    CODE_MAX_STRING_ARRAY_LENGTH: int = 30
    CODE_MAX_OBJECT_ARRAY_LENGTH: int = 30
    CODE_MAX_NUMBER_ARRAY_LENGTH: int = 1000

    HTTP_REQUEST_MAX_CONNECT_TIMEOUT: int = 300
    HTTP_REQUEST_MAX_READ_TIMEOUT: int = 600
    HTTP_REQUEST_MAX_WRITE_TIMEOUT: int = 600
    HTTP_REQUEST_NODE_MAX_BINARY_SIZE: int = 1024 * 1024 * 10

    @computed_field
    def HTTP_REQUEST_NODE_READABLE_MAX_BINARY_SIZE(self) -> str:
        return f'{self.HTTP_REQUEST_NODE_MAX_BINARY_SIZE / 1024 / 1024:.2f}MB'

    HTTP_REQUEST_NODE_MAX_TEXT_SIZE: int = 1024 * 1024

    @computed_field
    def HTTP_REQUEST_NODE_READABLE_MAX_TEXT_SIZE(self) -> str:
        return f'{self.HTTP_REQUEST_NODE_MAX_TEXT_SIZE / 1024 / 1024:.2f}MB'

    SSRF_PROXY_HTTP_URL: str | None = None
    SSRF_PROXY_HTTPS_URL: str | None = None