182 lines
6.9 KiB
TypeScript
182 lines
6.9 KiB
TypeScript
import { ResetValue } from "../../common/options";
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import { CloudEvent, CloudFunction } from "../core";
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import { Expression } from "../../params";
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import * as options from "../options";
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import { SecretParam } from "../../params/types";
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/**
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* Google Cloud Pub/Sub is a globally distributed message bus that automatically scales as you need it.
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* You can create a function ({@link onMessagePublished}) that handles pub/sub events by using functions.pubsub.
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*
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* This function triggers whenever a new pub/sub message is sent to a specific topic.
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* You must specify the Pub/Sub topic name that you want to trigger your function, and set the event within the
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* onPublish() event handler.
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*
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* PubSub Topic:
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* <ul>
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* <li>A resource that you can publish messages to and then consume those messages via subscriptions.
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* <li>An isolated data stream for pub/sub messages.
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* <li>Messages are published to a topic.
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* <li>Messages are listened to via a subscription.
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* <li>Each subscription listens to the messages published to exactly one topic.
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*
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* Subscriptions - Resource that listens to the messages published by exactly one topic.
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*
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* [More info here](https://firebase.google.com/docs/functions/pubsub-events)
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*/
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/**
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* Interface representing a Google Cloud Pub/Sub message.
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*
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* @param data - Payload of a Pub/Sub message.
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* @typeParam T - Type representing `Message.data`'s JSON format
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*/
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export declare class Message<T> {
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/**
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* Autogenerated ID that uniquely identifies this message.
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*/
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readonly messageId: string;
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/**
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* Time the message was published
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*/
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readonly publishTime: string;
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/**
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* The data payload of this message object as a base64-encoded string.
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*/
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readonly data: string;
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/**
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* User-defined attributes published with the message, if any.
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*/
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readonly attributes: {
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[key: string]: string;
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};
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/**
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* User-defined key used to ensure ordering amongst messages with the same key.
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*/
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readonly orderingKey: string;
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/** @hidden */
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private _json;
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/**
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* @hidden
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* @alpha
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*/
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constructor(data: any);
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/**
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* The JSON data payload of this message object, if any.
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*/
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get json(): T;
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/**
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* Returns a JSON-serializable representation of this object.
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*
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* @returns A JSON-serializable representation of this object.
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*/
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toJSON(): any;
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}
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/**
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* The interface published in a Pub/Sub publish subscription.
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* @typeParam T - Type representing `Message.data`'s JSON format
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*/
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export interface MessagePublishedData<T = any> {
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/** Google Cloud Pub/Sub message. */
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readonly message: Message<T>;
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/** A subscription resource. */
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readonly subscription: string;
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}
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/** PubSubOptions extend EventHandlerOptions but must include a topic. */
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export interface PubSubOptions extends options.EventHandlerOptions {
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/** The Pub/Sub topic to watch for message events */
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topic: string;
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/**
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* If true, do not deploy or emulate this function.
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*/
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omit?: boolean | Expression<boolean>;
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/**
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* Region where functions should be deployed.
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*/
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region?: options.SupportedRegion | string | Expression<string> | ResetValue;
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/**
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* Amount of memory to allocate to a function.
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*/
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memory?: options.MemoryOption | Expression<number> | ResetValue;
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/**
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* Timeout for the function in seconds, possible values are 0 to 540.
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* HTTPS functions can specify a higher timeout.
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*
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* @remarks
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* The minimum timeout for a gen 2 function is 1s. The maximum timeout for a
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* function depends on the type of function: Event handling functions have a
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* maximum timeout of 540s (9 minutes). HTTPS and callable functions have a
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* maximum timeout of 3,600s (1 hour). Task queue functions have a maximum
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* timeout of 1,800s (30 minutes)
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*/
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timeoutSeconds?: number | Expression<number> | ResetValue;
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/**
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* Min number of actual instances to be running at a given time.
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*
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* @remarks
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* Instances will be billed for memory allocation and 10% of CPU allocation
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* while idle.
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*/
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minInstances?: number | Expression<number> | ResetValue;
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/**
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* Max number of instances to be running in parallel.
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*/
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maxInstances?: number | Expression<number> | ResetValue;
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/**
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* Number of requests a function can serve at once.
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*
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* @remarks
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* Can only be applied to functions running on Cloud Functions v2.
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* A value of null restores the default concurrency (80 when CPU >= 1, 1 otherwise).
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* Concurrency cannot be set to any value other than 1 if `cpu` is less than 1.
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* The maximum value for concurrency is 1,000.
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*/
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concurrency?: number | Expression<number> | ResetValue;
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/**
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* Fractional number of CPUs to allocate to a function.
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*
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* @remarks
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* Defaults to 1 for functions with <= 2GB RAM and increases for larger memory sizes.
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* This is different from the defaults when using the gcloud utility and is different from
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* the fixed amount assigned in Google Cloud Functions generation 1.
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* To revert to the CPU amounts used in gcloud or in Cloud Functions generation 1, set this
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* to the value "gcf_gen1"
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*/
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cpu?: number | "gcf_gen1";
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/**
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* Connect cloud function to specified VPC connector.
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*/
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vpcConnector?: string | Expression<string> | ResetValue;
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/**
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* Egress settings for VPC connector.
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*/
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vpcConnectorEgressSettings?: options.VpcEgressSetting | ResetValue;
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/**
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* Specific service account for the function to run as.
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*/
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serviceAccount?: string | Expression<string> | ResetValue;
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/**
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* Ingress settings which control where this function can be called from.
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*/
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ingressSettings?: options.IngressSetting | ResetValue;
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/**
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* User labels to set on the function.
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*/
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labels?: Record<string, string>;
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secrets?: (string | SecretParam)[];
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/** Whether failed executions should be delivered again. */
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retry?: boolean | Expression<boolean> | ResetValue;
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}
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/**
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* Handle a message being published to a Pub/Sub topic.
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* @param topic - The Pub/Sub topic to watch for message events.
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* @param handler - runs every time a Cloud Pub/Sub message is published
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* @typeParam T - Type representing `Message.data`'s JSON format
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*/
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export declare function onMessagePublished<T = any>(topic: string, handler: (event: CloudEvent<MessagePublishedData<T>>) => any | Promise<any>): CloudFunction<CloudEvent<MessagePublishedData<T>>>;
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/**
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* Handle a message being published to a Pub/Sub topic.
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* @param options - Option containing information (topic) for event
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* @param handler - runs every time a Cloud Pub/Sub message is published
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* @typeParam T - Type representing `Message.data`'s JSON format
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*/
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export declare function onMessagePublished<T = any>(options: PubSubOptions, handler: (event: CloudEvent<MessagePublishedData<T>>) => any | Promise<any>): CloudFunction<CloudEvent<MessagePublishedData<T>>>;
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