import { Storage, StoreItems } from 'botbuilder';
export interface Host {
    /**
     * Primary host address.
     */
    primaryHost: string;
    /**
     * Secondary host address.
     */
    secondaryHost: string;
}
/**
 * Settings for configuring an instance of `BlobStorage`.
 */
export interface BlobStorageSettings {
    /**
     * Root container name to use.
     */
    containerName: string;
    /**
     * The storage account or the connection string. If this is the storage account, the storage access key must be provided.
     */
    storageAccountOrConnectionString: string;
    /**
     * The storage access key.
     */
    storageAccessKey?: string;
    /**
     * (Optional) azure storage host.
     */
    host?: string | Host;
}
/**
 * Middleware that implements a BlobStorage based storage provider for a bot.
 *
 * @remarks
 * The BlobStorage implements its storage using a single Azure Storage Blob Container. Each entity
 * is serialized into a JSON string and stored in an individual text blob. Each blob
 * is named after the key which is encoded and ensure it conforms a valid blob name.
 *
 * @deprecated This class is deprecated in favor of [BlobsStorage](xref:botbuilder-azure-blobs.BlobsStorage)
 */
export declare class BlobStorage implements Storage {
    private settings;
    private client;
    private useEmulator;
    /**
     * Creates a new BlobStorage instance.
     *
     * @param settings Settings for configuring an instance of BlobStorage.
     */
    constructor(settings: BlobStorageSettings);
    /**
     * Retrieve entities from the configured blob container.
     *
     * @param keys An array of entity keys.
     * @returns The read items.
     */
    read(keys: string[]): Promise<StoreItems>;
    /**
     * Store a new entity in the configured blob container.
     *
     * @param changes The changes to write to storage.
     */
    write(changes: StoreItems): Promise<void>;
    /**
     * Delete entity blobs from the configured container.
     *
     * @param keys An array of entity keys.
     */
    delete(keys: string[]): Promise<void>;
    /**
     * Get a blob name validated representation of an entity to be used as a key.
     *
     * @param key The key used to identify the entity.
     */
    private sanitizeKey;
    /**
     * Check if a container name is valid.
     *
     * @param container String representing the container name to validate.
     * @returns A boolean value that indicates whether or not the name is valid.
     */
    private checkContainerName;
    /**
     * Delay Container creation if it does not exist.
     */
    private ensureContainerExists;
    /**
     * Create a Blob Service.
     *
     * @param storageAccountOrConnectionString Azure CloudStorageAccount instance or Connection String.
     * @param storageAccessKey Blob Service Access Key.
     * @param host Blob Service Host.
     * @returns The blob services created.
     */
    private createBlobService;
    /**
     * @private
     * Turn a cb based azure method into a Promisified one.
     */
    private denodeify;
}
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