/**
 * Copyright 2022 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/**
 * The event data when a message is published to a topic.
 */
export interface MessagePublishedData {
    /**
     * The message that was published.
     */
    message?: Message;
    /**
     * The resource name of the subscription for which this event was
     * generated. The format of the value is
     * `projects/{project-id}/subscriptions/{subscription-id}`.
     */
    subscription?: string;
}
/**
 * The message that was published.
 *
 * A message published to a topic.
 */
export interface Message {
    /**
     * Attributes for this message.
     */
    attributes?: {
        [key: string]: string;
    };
    /**
     * The binary data in the message.
     */
    data?: string;
    /**
     * ID of this message, assigned by the server when the message is published.
     * Guaranteed to be unique within the topic.
     */
    messageId?: string;
    /**
     * If non-empty, identifies related messages for which publish order should be
     * respected.
     */
    orderingKey?: string;
    /**
     * The time at which the message was published, populated by the server when
     * it receives the `Publish` call.
     */
    publishTime?: Date | string;
}
/**
 * Cast a raw JSON object to a typed event (useful for IDE autocompletion).
 * @param {object} json The JSON object
 * @return {MessagePublishedData} The object with type annotations
 */
export declare const toMessagePublishedData: (json: object) => MessagePublishedData;