export declare type LoggerLevel = 'debug' | 'info' | 'notice' | 'warning' | 'error' | 'crit';
export declare class IslandEnvironments {
    static getInstance(): IslandEnvironments;
    private static _instance;
    ISLAND_SERVICE_NAME: string;
    ISLAND_HOST_NAME: string;
    ISLAND_USE_DEV_MODE: boolean;
    ISLAND_SERIALIZE_FORMAT_PUSH: string;
    ISLAND_EVENT_PREFETCH: number;
    ISLAND_RPC_PREFETCH: number;
    ISLAND_RPC_EXEC_TIMEOUT: string;
    ISLAND_RPC_EXEC_TIMEOUT_MS: number;
    ISLAND_RPC_MESSAGE_TTL: string;
    ISLAND_RPC_MESSAGE_TTL_MS: number;
    ISLAND_RPC_REPLY_MARGIN_TIME: string;
    ISLAND_RPC_REPLY_MARGIN_TIME_MS: number;
    ISLAND_LOGGER_LEVEL: string;
    ISLAND_LOGGER_TYPE: string;
    ISLAND_RPC_RES_NOACK: boolean;
    ISLAND_NO_REVIVER: boolean;
    ISLAND_USE_REVIVER: boolean;
    ISLAND_STATUS_EXPORT: boolean;
    ISLAND_STATUS_EXPORT_TIME: string;
    ISLAND_STATUS_EXPORT_TIME_MS: number;
    ISLAND_STATUS_FILE_NAME: string;
    ISLAND_STATUS_EXPORT_TYPE: string;
    ISLAND_STATUS_EXPORT_UDP_HOST: string;
    ISLAND_STATUS_EXPORT_UDP_PORT: number;
    ISLAND_TRACEMQ_HOST: string;
    ISLAND_TRACEMQ_QUEUE: string;
    ISLAND_TRACE_HEADER_LOG: boolean;
    ISLAND_ENDPOINT_SESSION_GROUP: string;
    ISLAND_CONSUL_HOST: string;
    ISLAND_CONSUL_PORT: string;
    ISLAND_CONSUL_NAMESPACE: string;
    ISLAND_CONSUL_TOKEN: string;
    ISLAND_RABBITMQ_HOST: string;
    ISLAND_RABBITMQ_PUSH_HOST: string;
    ISLAND_RABBITMQ_RPC_HOST: string;
    ISLAND_RABBITMQ_EVENT_HOST: string;
    ISLAND_RABBITMQ_POOLSIZE: number;
    ISLAND_REDIS_AUTH: string;
    ISLAND_REDIS_HOST: string;
    ISLAND_REDIS_PORT: number;
    ISLAND_MONGO_HOST: string;
    ISLAND_RPC_DISTRIB_SIZE: number;
    ISLAND_USE_CIRCUIT_BREAK: boolean;
    ISLAND_CIRCUIT_BREAK_TIME: string;
    ISLAND_CIRCUIT_BREAK_TIME_MS: number;
    ISLAND_CIRCUIT_BREAK_FAILRATE_THRESHOLD: number;
    ISLAND_CIRCUIT_BREAK_REQUEST_THRESHOLD: number;
    ISLAND_FLOWMODE_DELAY_TIME: string;
    ISLAND_FLOWMODE_DELAY: number;
    ISLAND_MAX_INITIALIZATION_TIME: string;
    ISLAND_MAX_INITIALIZATION_TIME_MS: number;
    VERSION: string;
    ISLAND_EVENT_ALLOWED_ARRIVAL_TIME: string;
    ISLAND_EVENT_ALLOWED_ARRIVAL_TIME_MS: number;
    ISLAND_FLOW_CONTROL_DELAY_CHECK_TIME: string;
    ISLAND_FLOW_CONTROL_DELAY_CHECK_TIME_MS: number;
    ISLAND_RPC_SERVICE_INVOKE_DEBUG: boolean;
    constructor();
    isDevMode(): boolean;
    getHostName(): string | undefined;
    getServiceName(): string;
    getIslandVersion(): string;
    getEventPrefetch(): number;
    getRpcPrefetch(): number;
    getSerializeFormatPush(): string;
    getIslandRpcExecTimeoutMs(): number;
    isIslandRpcResNoack(): boolean;
    isUseReviver(): boolean;
    getIslandLoggerLevel(): LoggerLevel;
    isStatusExport(): boolean;
    getStatusExportTimeMs(): number;
    getStatusFileName(): string | undefined;
    getStatusExportType(): string;
    getUdpOption(): {
        host: string;
        port: number;
    };
    getIslandTracemqHost(): string | undefined;
    getIslandTracemqQueue(): string;
    isUsingTraceHeaderLog(): boolean;
    getIgnoreEventLogRegexp(): string;
    getEndpointSessionGroup(): string | undefined;
    refreshEnvForDebug(): void;
    logProperties(): void;
    getRpcDistribSize(): number;
    getFlowModeDelay(): number;
    private setIslandInfoFromPackageJson;
    private getExecPath;
}
export declare const Environments: IslandEnvironments;