dify/api/config.py

import os

import dotenv

dotenv.load_dotenv()

DEFAULTS = {
    'EDITION': 'SELF_HOSTED',
    'DB_USERNAME': 'postgres',
    'DB_PASSWORD': '',
    'DB_HOST': 'localhost',
    'DB_PORT': '5432',
    'DB_DATABASE': 'dify',
    'DB_CHARSET': '',
    'REDIS_HOST': 'localhost',
    'REDIS_PORT': '6379',
    'REDIS_DB': '0',
    'REDIS_USE_SSL': 'False',
    'OAUTH_REDIRECT_PATH': '/console/api/oauth/authorize',
    'OAUTH_REDIRECT_INDEX_PATH': '/',
    'CONSOLE_WEB_URL': 'https://cloud.dify.ai',
    'CONSOLE_API_URL': 'https://cloud.dify.ai',
    'SERVICE_API_URL': 'https://api.dify.ai',
    'APP_WEB_URL': 'https://udify.app',
    'FILES_URL': '',
    'FILES_ACCESS_TIMEOUT': 300,
    'S3_ADDRESS_STYLE': 'auto',
    'STORAGE_TYPE': 'local',
    'STORAGE_LOCAL_PATH': 'storage',
    'CHECK_UPDATE_URL': 'https://updates.dify.ai',
    'DEPLOY_ENV': 'PRODUCTION',
    'SQLALCHEMY_DATABASE_URI_SCHEME': 'postgresql',
    'SQLALCHEMY_POOL_SIZE': 30,
    'SQLALCHEMY_MAX_OVERFLOW': 10,
    'SQLALCHEMY_POOL_RECYCLE': 3600,
    'SQLALCHEMY_POOL_PRE_PING': 'False',
    'SQLALCHEMY_ECHO': 'False',
    'SENTRY_TRACES_SAMPLE_RATE': 1.0,
    'SENTRY_PROFILES_SAMPLE_RATE': 1.0,
    'WEAVIATE_GRPC_ENABLED': 'True',
    'WEAVIATE_BATCH_SIZE': 100,
    'QDRANT_CLIENT_TIMEOUT': 20,
    'QDRANT_GRPC_ENABLED': 'False',
    'QDRANT_GRPC_PORT': '6334',
    'CELERY_BACKEND': 'database',
    'LOG_LEVEL': 'INFO',
    'LOG_FILE': '',
    'LOG_FORMAT': '%(asctime)s.%(msecs)03d %(levelname)s [%(threadName)s] [%(filename)s:%(lineno)d] - %(message)s',
    'LOG_DATEFORMAT': '%Y-%m-%d %H:%M:%S',
    'HOSTED_OPENAI_QUOTA_LIMIT': 200,
    'HOSTED_OPENAI_TRIAL_ENABLED': 'False',
    'HOSTED_OPENAI_TRIAL_MODELS': 'gpt-3.5-turbo,gpt-3.5-turbo-1106,gpt-3.5-turbo-instruct,gpt-3.5-turbo-16k,gpt-3.5-turbo-16k-0613,gpt-3.5-turbo-0613,gpt-3.5-turbo-0125,text-davinci-003',
    'HOSTED_OPENAI_PAID_ENABLED': 'False',
    'HOSTED_OPENAI_PAID_MODELS': 'gpt-4,gpt-4-turbo-preview,gpt-4-turbo-2024-04-09,gpt-4-1106-preview,gpt-4-0125-preview,gpt-3.5-turbo,gpt-3.5-turbo-16k,gpt-3.5-turbo-16k-0613,gpt-3.5-turbo-1106,gpt-3.5-turbo-0613,gpt-3.5-turbo-0125,gpt-3.5-turbo-instruct,text-davinci-003',
    'HOSTED_AZURE_OPENAI_ENABLED': 'False',
    'HOSTED_AZURE_OPENAI_QUOTA_LIMIT': 200,
    'HOSTED_ANTHROPIC_QUOTA_LIMIT': 600000,
    'HOSTED_ANTHROPIC_TRIAL_ENABLED': 'False',
    'HOSTED_ANTHROPIC_PAID_ENABLED': 'False',
    'HOSTED_MODERATION_ENABLED': 'False',
    'HOSTED_MODERATION_PROVIDERS': '',
    'HOSTED_FETCH_APP_TEMPLATES_MODE': 'remote',
    'HOSTED_FETCH_APP_TEMPLATES_REMOTE_DOMAIN': 'https://tmpl.dify.ai',
    'CLEAN_DAY_SETTING': 30,
    'UPLOAD_FILE_SIZE_LIMIT': 15,
    'UPLOAD_FILE_BATCH_LIMIT': 5,
    'UPLOAD_IMAGE_FILE_SIZE_LIMIT': 10,
    'OUTPUT_MODERATION_BUFFER_SIZE': 300,
    'MULTIMODAL_SEND_IMAGE_FORMAT': 'base64',
    'INVITE_EXPIRY_HOURS': 72,
    'BILLING_ENABLED': 'False',
    'CAN_REPLACE_LOGO': 'False',
    'MODEL_LB_ENABLED': 'False',
    'ETL_TYPE': 'dify',
    'KEYWORD_STORE': 'jieba',
    'BATCH_UPLOAD_LIMIT': 20,
    'CODE_EXECUTION_ENDPOINT': 'http://sandbox:8194',
    'CODE_EXECUTION_API_KEY': 'dify-sandbox',
    'TOOL_ICON_CACHE_MAX_AGE': 3600,
    'MILVUS_DATABASE': 'default',
    'KEYWORD_DATA_SOURCE_TYPE': 'database',
    'INNER_API': 'False',
    'ENTERPRISE_ENABLED': 'False',
    'INDEXING_MAX_SEGMENTATION_TOKENS_LENGTH': 1000,
    'WORKFLOW_MAX_EXECUTION_STEPS': 500,
    'WORKFLOW_MAX_EXECUTION_TIME': 1200,
    'WORKFLOW_CALL_MAX_DEPTH': 5,
}


def get_env(key):
    return os.environ.get(key, DEFAULTS.get(key))


def get_bool_env(key):
    value = get_env(key)
    return value.lower() == 'true' if value is not None else False


def get_cors_allow_origins(env, default):
    cors_allow_origins = []
    if get_env(env):
        for origin in get_env(env).split(','):
            cors_allow_origins.append(origin)
    else:
        cors_allow_origins = [default]

    return cors_allow_origins


class Config:
    """Application configuration class."""

    def __init__(self):
        # ------------------------
        # General Configurations.
        # ------------------------
        self.CURRENT_VERSION = "0.6.9"
        self.COMMIT_SHA = get_env('COMMIT_SHA')
        self.EDITION = get_env('EDITION')
        self.DEPLOY_ENV = get_env('DEPLOY_ENV')
        self.TESTING = False
        self.LOG_LEVEL = get_env('LOG_LEVEL')
        self.LOG_FILE = get_env('LOG_FILE')
        self.LOG_FORMAT = get_env('LOG_FORMAT')
        self.LOG_DATEFORMAT = get_env('LOG_DATEFORMAT')
        self.API_COMPRESSION_ENABLED = get_bool_env('API_COMPRESSION_ENABLED')

        # The backend URL prefix of the console API.
        # used to concatenate the login authorization callback or notion integration callback.
        self.CONSOLE_API_URL = get_env('CONSOLE_API_URL')

        # The front-end URL prefix of the console web.
        # used to concatenate some front-end addresses and for CORS configuration use.
        self.CONSOLE_WEB_URL = get_env('CONSOLE_WEB_URL')

        # WebApp Url prefix.
        # used to display WebAPP API Base Url to the front-end.
        self.APP_WEB_URL = get_env('APP_WEB_URL')

        # Service API Url prefix.
        # used to display Service API Base Url to the front-end.
        self.SERVICE_API_URL = get_env('SERVICE_API_URL')

        # File preview or download Url prefix.
        # used to display File preview or download Url to the front-end or as Multi-model inputs;
        # Url is signed and has expiration time.
        self.FILES_URL = get_env('FILES_URL') if get_env('FILES_URL') else self.CONSOLE_API_URL

        # File Access Time specifies a time interval in seconds for the file to be accessed.
        # The default value is 300 seconds.
        self.FILES_ACCESS_TIMEOUT = int(get_env('FILES_ACCESS_TIMEOUT'))

        # Your App secret key will be used for securely signing the session cookie
        # Make sure you are changing this key for your deployment with a strong key.
        # You can generate a strong key using `openssl rand -base64 42`.
        # Alternatively you can set it with `SECRET_KEY` environment variable.
        self.SECRET_KEY = get_env('SECRET_KEY')

        # Enable or disable the inner API.
        self.INNER_API = get_bool_env('INNER_API')
        # The inner API key is used to authenticate the inner API.
        self.INNER_API_KEY = get_env('INNER_API_KEY')

        # cors settings
        self.CONSOLE_CORS_ALLOW_ORIGINS = get_cors_allow_origins(
            'CONSOLE_CORS_ALLOW_ORIGINS', self.CONSOLE_WEB_URL)
        self.WEB_API_CORS_ALLOW_ORIGINS = get_cors_allow_origins(
            'WEB_API_CORS_ALLOW_ORIGINS', '*')

        # check update url
        self.CHECK_UPDATE_URL = get_env('CHECK_UPDATE_URL')

        # ------------------------
        # Database Configurations.
        # ------------------------
        db_credentials = {
            key: get_env(key) for key in
            ['DB_USERNAME', 'DB_PASSWORD', 'DB_HOST', 'DB_PORT', 'DB_DATABASE', 'DB_CHARSET']
        }
        self.SQLALCHEMY_DATABASE_URI_SCHEME = get_env('SQLALCHEMY_DATABASE_URI_SCHEME')

        db_extras = f"?client_encoding={db_credentials['DB_CHARSET']}" if db_credentials['DB_CHARSET'] else ""

        self.SQLALCHEMY_DATABASE_URI = f"{self.SQLALCHEMY_DATABASE_URI_SCHEME}://{db_credentials['DB_USERNAME']}:{db_credentials['DB_PASSWORD']}@{db_credentials['DB_HOST']}:{db_credentials['DB_PORT']}/{db_credentials['DB_DATABASE']}{db_extras}"
        self.SQLALCHEMY_ENGINE_OPTIONS = {
            'pool_size': int(get_env('SQLALCHEMY_POOL_SIZE')),
            'max_overflow': int(get_env('SQLALCHEMY_MAX_OVERFLOW')),
            'pool_recycle': int(get_env('SQLALCHEMY_POOL_RECYCLE')),
            'pool_pre_ping': get_bool_env('SQLALCHEMY_POOL_PRE_PING'),
            'connect_args': {'options': '-c timezone=UTC'},
        }

        self.SQLALCHEMY_ECHO = get_bool_env('SQLALCHEMY_ECHO')

        # ------------------------
        # Redis Configurations.
        # ------------------------
        self.REDIS_HOST = get_env('REDIS_HOST')
        self.REDIS_PORT = get_env('REDIS_PORT')
        self.REDIS_USERNAME = get_env('REDIS_USERNAME')
        self.REDIS_PASSWORD = get_env('REDIS_PASSWORD')
        self.REDIS_DB = get_env('REDIS_DB')
        self.REDIS_USE_SSL = get_bool_env('REDIS_USE_SSL')

        # ------------------------
        # Celery worker Configurations.
        # ------------------------
        self.CELERY_BROKER_URL = get_env('CELERY_BROKER_URL')
        self.CELERY_BACKEND = get_env('CELERY_BACKEND')
        self.CELERY_RESULT_BACKEND = 'db+{}'.format(self.SQLALCHEMY_DATABASE_URI) \
            if self.CELERY_BACKEND == 'database' else self.CELERY_BROKER_URL
        self.BROKER_USE_SSL = self.CELERY_BROKER_URL.startswith('rediss://')

        # ------------------------
        # Code Execution Sandbox Configurations.
        # ------------------------
        self.CODE_EXECUTION_ENDPOINT = get_env('CODE_EXECUTION_ENDPOINT')
        self.CODE_EXECUTION_API_KEY = get_env('CODE_EXECUTION_API_KEY')

        # ------------------------
        # File Storage Configurations.
        # ------------------------
        self.STORAGE_TYPE = get_env('STORAGE_TYPE')
        self.STORAGE_LOCAL_PATH = get_env('STORAGE_LOCAL_PATH')

        # S3 Storage settings
        self.S3_ENDPOINT = get_env('S3_ENDPOINT')
        self.S3_BUCKET_NAME = get_env('S3_BUCKET_NAME')
        self.S3_ACCESS_KEY = get_env('S3_ACCESS_KEY')
        self.S3_SECRET_KEY = get_env('S3_SECRET_KEY')
        self.S3_REGION = get_env('S3_REGION')
        self.S3_ADDRESS_STYLE = get_env('S3_ADDRESS_STYLE')

        # Azure Blob Storage settings
        self.AZURE_BLOB_ACCOUNT_NAME = get_env('AZURE_BLOB_ACCOUNT_NAME')
        self.AZURE_BLOB_ACCOUNT_KEY = get_env('AZURE_BLOB_ACCOUNT_KEY')
        self.AZURE_BLOB_CONTAINER_NAME = get_env('AZURE_BLOB_CONTAINER_NAME')
        self.AZURE_BLOB_ACCOUNT_URL = get_env('AZURE_BLOB_ACCOUNT_URL')

        # Aliyun Storage settings
        self.ALIYUN_OSS_BUCKET_NAME = get_env('ALIYUN_OSS_BUCKET_NAME')
        self.ALIYUN_OSS_ACCESS_KEY = get_env('ALIYUN_OSS_ACCESS_KEY')
        self.ALIYUN_OSS_SECRET_KEY = get_env('ALIYUN_OSS_SECRET_KEY')
        self.ALIYUN_OSS_ENDPOINT = get_env('ALIYUN_OSS_ENDPOINT')
        self.ALIYUN_OSS_REGION = get_env('ALIYUN_OSS_REGION')
        self.ALIYUN_OSS_AUTH_VERSION = get_env('ALIYUN_OSS_AUTH_VERSION')

        # Google Cloud Storage settings
        self.GOOGLE_STORAGE_BUCKET_NAME = get_env('GOOGLE_STORAGE_BUCKET_NAME')
        self.GOOGLE_STORAGE_SERVICE_ACCOUNT_JSON_BASE64 = get_env('GOOGLE_STORAGE_SERVICE_ACCOUNT_JSON_BASE64')

        # ------------------------
        # Vector Store Configurations.
        # Currently, only support: qdrant, milvus, zilliz, weaviate, relyt, pgvector
        # ------------------------
        self.VECTOR_STORE = get_env('VECTOR_STORE')
        self.KEYWORD_STORE = get_env('KEYWORD_STORE')

        # qdrant settings
        self.QDRANT_URL = get_env('QDRANT_URL')
        self.QDRANT_API_KEY = get_env('QDRANT_API_KEY')
        self.QDRANT_CLIENT_TIMEOUT = get_env('QDRANT_CLIENT_TIMEOUT')
        self.QDRANT_GRPC_ENABLED = get_env('QDRANT_GRPC_ENABLED')
        self.QDRANT_GRPC_PORT = get_env('QDRANT_GRPC_PORT')

        # milvus / zilliz setting
        self.MILVUS_HOST = get_env('MILVUS_HOST')
        self.MILVUS_PORT = get_env('MILVUS_PORT')
        self.MILVUS_USER = get_env('MILVUS_USER')
        self.MILVUS_PASSWORD = get_env('MILVUS_PASSWORD')
        self.MILVUS_SECURE = get_env('MILVUS_SECURE')
        self.MILVUS_DATABASE = get_env('MILVUS_DATABASE')

        # weaviate settings
        self.WEAVIATE_ENDPOINT = get_env('WEAVIATE_ENDPOINT')
        self.WEAVIATE_API_KEY = get_env('WEAVIATE_API_KEY')
        self.WEAVIATE_GRPC_ENABLED = get_bool_env('WEAVIATE_GRPC_ENABLED')
        self.WEAVIATE_BATCH_SIZE = int(get_env('WEAVIATE_BATCH_SIZE'))

        # relyt settings
        self.RELYT_HOST = get_env('RELYT_HOST')
        self.RELYT_PORT = get_env('RELYT_PORT')
        self.RELYT_USER = get_env('RELYT_USER')
        self.RELYT_PASSWORD = get_env('RELYT_PASSWORD')
        self.RELYT_DATABASE = get_env('RELYT_DATABASE')

        # pgvecto rs settings
        self.PGVECTO_RS_HOST = get_env('PGVECTO_RS_HOST')
        self.PGVECTO_RS_PORT = get_env('PGVECTO_RS_PORT')
        self.PGVECTO_RS_USER = get_env('PGVECTO_RS_USER')
        self.PGVECTO_RS_PASSWORD = get_env('PGVECTO_RS_PASSWORD')
        self.PGVECTO_RS_DATABASE = get_env('PGVECTO_RS_DATABASE')

        # pgvector settings
        self.PGVECTOR_HOST = get_env('PGVECTOR_HOST')
        self.PGVECTOR_PORT = get_env('PGVECTOR_PORT')
        self.PGVECTOR_USER = get_env('PGVECTOR_USER')
        self.PGVECTOR_PASSWORD = get_env('PGVECTOR_PASSWORD')
        self.PGVECTOR_DATABASE = get_env('PGVECTOR_DATABASE')

        # ------------------------
        # Mail Configurations.
        # ------------------------
        self.MAIL_TYPE = get_env('MAIL_TYPE')
        self.MAIL_DEFAULT_SEND_FROM = get_env('MAIL_DEFAULT_SEND_FROM')
        self.RESEND_API_KEY = get_env('RESEND_API_KEY')
        self.RESEND_API_URL = get_env('RESEND_API_URL')
        # SMTP settings
        self.SMTP_SERVER = get_env('SMTP_SERVER')
        self.SMTP_PORT = get_env('SMTP_PORT')
        self.SMTP_USERNAME = get_env('SMTP_USERNAME')
        self.SMTP_PASSWORD = get_env('SMTP_PASSWORD')
        self.SMTP_USE_TLS = get_bool_env('SMTP_USE_TLS')
        self.SMTP_OPPORTUNISTIC_TLS = get_bool_env('SMTP_OPPORTUNISTIC_TLS')

        # ------------------------
        # Workspace Configurations.
        # ------------------------
        self.INVITE_EXPIRY_HOURS = int(get_env('INVITE_EXPIRY_HOURS'))

        # ------------------------
        # Sentry Configurations.
        # ------------------------
        self.SENTRY_DSN = get_env('SENTRY_DSN')
        self.SENTRY_TRACES_SAMPLE_RATE = float(get_env('SENTRY_TRACES_SAMPLE_RATE'))
        self.SENTRY_PROFILES_SAMPLE_RATE = float(get_env('SENTRY_PROFILES_SAMPLE_RATE'))

        # ------------------------
        # Business Configurations.
        # ------------------------

        # multi model send image format, support base64, url, default is base64
        self.MULTIMODAL_SEND_IMAGE_FORMAT = get_env('MULTIMODAL_SEND_IMAGE_FORMAT')

        # Dataset Configurations.
        self.CLEAN_DAY_SETTING = get_env('CLEAN_DAY_SETTING')

        # File upload Configurations.
        self.UPLOAD_FILE_SIZE_LIMIT = int(get_env('UPLOAD_FILE_SIZE_LIMIT'))
        self.UPLOAD_FILE_BATCH_LIMIT = int(get_env('UPLOAD_FILE_BATCH_LIMIT'))
        self.UPLOAD_IMAGE_FILE_SIZE_LIMIT = int(get_env('UPLOAD_IMAGE_FILE_SIZE_LIMIT'))
        self.BATCH_UPLOAD_LIMIT = get_env('BATCH_UPLOAD_LIMIT')

        # RAG ETL Configurations.
        self.ETL_TYPE = get_env('ETL_TYPE')
        self.UNSTRUCTURED_API_URL = get_env('UNSTRUCTURED_API_URL')
        self.UNSTRUCTURED_API_KEY = get_env('UNSTRUCTURED_API_KEY')
        self.KEYWORD_DATA_SOURCE_TYPE = get_env('KEYWORD_DATA_SOURCE_TYPE')

        # Indexing Configurations.
        self.INDEXING_MAX_SEGMENTATION_TOKENS_LENGTH = get_env('INDEXING_MAX_SEGMENTATION_TOKENS_LENGTH')

        # Tool Configurations.
        self.TOOL_ICON_CACHE_MAX_AGE = get_env('TOOL_ICON_CACHE_MAX_AGE')

        self.WORKFLOW_MAX_EXECUTION_STEPS = int(get_env('WORKFLOW_MAX_EXECUTION_STEPS'))
        self.WORKFLOW_MAX_EXECUTION_TIME = int(get_env('WORKFLOW_MAX_EXECUTION_TIME'))
        self.WORKFLOW_CALL_MAX_DEPTH = int(get_env('WORKFLOW_CALL_MAX_DEPTH'))

        # Moderation in app Configurations.
        self.OUTPUT_MODERATION_BUFFER_SIZE = int(get_env('OUTPUT_MODERATION_BUFFER_SIZE'))

        # Notion integration setting
        self.NOTION_CLIENT_ID = get_env('NOTION_CLIENT_ID')
        self.NOTION_CLIENT_SECRET = get_env('NOTION_CLIENT_SECRET')
        self.NOTION_INTEGRATION_TYPE = get_env('NOTION_INTEGRATION_TYPE')
        self.NOTION_INTERNAL_SECRET = get_env('NOTION_INTERNAL_SECRET')
        self.NOTION_INTEGRATION_TOKEN = get_env('NOTION_INTEGRATION_TOKEN')

        # ------------------------
        # Platform Configurations.
        # ------------------------
        self.GITHUB_CLIENT_ID = get_env('GITHUB_CLIENT_ID')
        self.GITHUB_CLIENT_SECRET = get_env('GITHUB_CLIENT_SECRET')
        self.GOOGLE_CLIENT_ID = get_env('GOOGLE_CLIENT_ID')
        self.GOOGLE_CLIENT_SECRET = get_env('GOOGLE_CLIENT_SECRET')
        self.OAUTH_REDIRECT_PATH = get_env('OAUTH_REDIRECT_PATH')

        self.HOSTED_OPENAI_API_KEY = get_env('HOSTED_OPENAI_API_KEY')
        self.HOSTED_OPENAI_API_BASE = get_env('HOSTED_OPENAI_API_BASE')
        self.HOSTED_OPENAI_API_ORGANIZATION = get_env('HOSTED_OPENAI_API_ORGANIZATION')
        self.HOSTED_OPENAI_TRIAL_ENABLED = get_bool_env('HOSTED_OPENAI_TRIAL_ENABLED')
        self.HOSTED_OPENAI_TRIAL_MODELS = get_env('HOSTED_OPENAI_TRIAL_MODELS')
        self.HOSTED_OPENAI_QUOTA_LIMIT = int(get_env('HOSTED_OPENAI_QUOTA_LIMIT'))
        self.HOSTED_OPENAI_PAID_ENABLED = get_bool_env('HOSTED_OPENAI_PAID_ENABLED')
        self.HOSTED_OPENAI_PAID_MODELS = get_env('HOSTED_OPENAI_PAID_MODELS')

        self.HOSTED_AZURE_OPENAI_ENABLED = get_bool_env('HOSTED_AZURE_OPENAI_ENABLED')
        self.HOSTED_AZURE_OPENAI_API_KEY = get_env('HOSTED_AZURE_OPENAI_API_KEY')
        self.HOSTED_AZURE_OPENAI_API_BASE = get_env('HOSTED_AZURE_OPENAI_API_BASE')
        self.HOSTED_AZURE_OPENAI_QUOTA_LIMIT = int(get_env('HOSTED_AZURE_OPENAI_QUOTA_LIMIT'))

        self.HOSTED_ANTHROPIC_API_BASE = get_env('HOSTED_ANTHROPIC_API_BASE')
        self.HOSTED_ANTHROPIC_API_KEY = get_env('HOSTED_ANTHROPIC_API_KEY')
        self.HOSTED_ANTHROPIC_TRIAL_ENABLED = get_bool_env('HOSTED_ANTHROPIC_TRIAL_ENABLED')
        self.HOSTED_ANTHROPIC_QUOTA_LIMIT = int(get_env('HOSTED_ANTHROPIC_QUOTA_LIMIT'))
        self.HOSTED_ANTHROPIC_PAID_ENABLED = get_bool_env('HOSTED_ANTHROPIC_PAID_ENABLED')

        self.HOSTED_MINIMAX_ENABLED = get_bool_env('HOSTED_MINIMAX_ENABLED')
        self.HOSTED_SPARK_ENABLED = get_bool_env('HOSTED_SPARK_ENABLED')
        self.HOSTED_ZHIPUAI_ENABLED = get_bool_env('HOSTED_ZHIPUAI_ENABLED')

        self.HOSTED_MODERATION_ENABLED = get_bool_env('HOSTED_MODERATION_ENABLED')
        self.HOSTED_MODERATION_PROVIDERS = get_env('HOSTED_MODERATION_PROVIDERS')

        # fetch app templates mode, remote, builtin, db(only for dify SaaS), default: remote
        self.HOSTED_FETCH_APP_TEMPLATES_MODE = get_env('HOSTED_FETCH_APP_TEMPLATES_MODE')
        self.HOSTED_FETCH_APP_TEMPLATES_REMOTE_DOMAIN = get_env('HOSTED_FETCH_APP_TEMPLATES_REMOTE_DOMAIN')

        # Model Load Balancing Configurations.
        self.MODEL_LB_ENABLED = get_bool_env('MODEL_LB_ENABLED')

        # Platform Billing Configurations.
        self.BILLING_ENABLED = get_bool_env('BILLING_ENABLED')

        # ------------------------
        # Enterprise feature Configurations.
        # **Before using, please contact business@dify.ai by email to inquire about licensing matters.**
        # ------------------------
        self.ENTERPRISE_ENABLED = get_bool_env('ENTERPRISE_ENABLED')
        self.CAN_REPLACE_LOGO = get_bool_env('CAN_REPLACE_LOGO')