/**
 * #### Introduction
 *
 * The Byte Stream API enables a client to read and write a stream of bytes to
 * and from a resource. Resources have names, and these names are supplied in
 * the API calls below to identify the resource that is being read from or
 * written to.
 *
 * All implementations of the Byte Stream API export the interface defined here:
 *
 * * `Read()`: Reads the contents of a resource.
 *
 * * `Write()`: Writes the contents of a resource. The client can call `Write()`
 *   multiple times with the same resource and can check the status of the write
 *   by calling `QueryWriteStatus()`.
 *
 * #### Service parameters and metadata
 *
 * The ByteStream API provides no direct way to access/modify any metadata
 * associated with the resource.
 *
 * #### Errors
 *
 * The errors returned by the service are in the Google canonical error space.
 *
 * @generated from service google.bytestream.ByteStream
 */
export declare const ByteStream: {
    readonly typeName: "google.bytestream.ByteStream";
    readonly methods: {
        /**
         * `Read()` is used to retrieve the contents of a resource as a sequence
         * of bytes. The bytes are returned in a sequence of responses, and the
         * responses are delivered as the results of a server-side streaming RPC.
         *
         * @generated from rpc google.bytestream.ByteStream.Read
         */
        readonly read: {
            readonly name: "Read";
            readonly I: any;
            readonly O: any;
            readonly kind: any;
        };
        /**
         * `Write()` is used to send the contents of a resource as a sequence of
         * bytes. The bytes are sent in a sequence of request protos of a client-side
         * streaming RPC.
         *
         * A `Write()` action is resumable. If there is an error or the connection is
         * broken during the `Write()`, the client should check the status of the
         * `Write()` by calling `QueryWriteStatus()` and continue writing from the
         * returned `committed_size`. This may be less than the amount of data the
         * client previously sent.
         *
         * Calling `Write()` on a resource name that was previously written and
         * finalized could cause an error, depending on whether the underlying service
         * allows over-writing of previously written resources.
         *
         * When the client closes the request channel, the service will respond with
         * a `WriteResponse`. The service will not view the resource as `complete`
         * until the client has sent a `WriteRequest` with `finish_write` set to
         * `true`. Sending any requests on a stream after sending a request with
         * `finish_write` set to `true` will cause an error. The client **should**
         * check the `WriteResponse` it receives to determine how much data the
         * service was able to commit and whether the service views the resource as
         * `complete` or not.
         *
         * @generated from rpc google.bytestream.ByteStream.Write
         */
        readonly write: {
            readonly name: "Write";
            readonly I: any;
            readonly O: any;
            readonly kind: any;
        };
        /**
         * `QueryWriteStatus()` is used to find the `committed_size` for a resource
         * that is being written, which can then be used as the `write_offset` for
         * the next `Write()` call.
         *
         * If the resource does not exist (i.e., the resource has been deleted, or the
         * first `Write()` has not yet reached the service), this method returns the
         * error `NOT_FOUND`.
         *
         * The client **may** call `QueryWriteStatus()` at any time to determine how
         * much data has been processed for this resource. This is useful if the
         * client is buffering data and needs to know which data can be safely
         * evicted. For any sequence of `QueryWriteStatus()` calls for a given
         * resource name, the sequence of returned `committed_size` values will be
         * non-decreasing.
         *
         * @generated from rpc google.bytestream.ByteStream.QueryWriteStatus
         */
        readonly queryWriteStatus: {
            readonly name: "QueryWriteStatus";
            readonly I: any;
            readonly O: any;
            readonly kind: any;
        };
    };
};