import aws from "../../aws.app.mjs";
import { axios } from "@pipedream/platform";
import {
RDSClient,
DescribeEventCategoriesCommand,
CreateEventSubscriptionCommand,
DeleteEventSubscriptionCommand,
} from "@aws-sdk/client-rds";
import {
SNSClient,
ListTopicsCommand,
SubscribeCommand,
UnsubscribeCommand,
} from "@aws-sdk/client-sns";
export default {
key: "aws-rds-new-event",
name: "New Update to AWS RDS Database (Instant)",
description: "Emit new event when there is an update to an AWS RDS Database.",
version: "0.0.2",
type: "source",
dedupe: "unique",
props: {
aws,
db: "$.service.db",
http: {
type: "$.interface.http",
customResponse: true,
},
region: {
propDefinition: [
aws,
"region",
],
},
topic: {
type: "string",
label: "SNS Topic",
description: "The ARN of the SNS Topic",
async options({ prevContext }) {
const response = await this._clientSns().send(new ListTopicsCommand({
NextToken: prevContext.nextToken,
}));
return {
options: response.Topics.map((topic) => topic.TopicArn),
context: {
nextToken: response.NextToken,
},
};
},
},
name: {
type: "string",
label: "Subscription Name",
description: "The name of the subscription",
},
sourceType: {
type: "string",
label: "Source Type",
description: "The type of source that is generating the events. If this value isn't specified, all events are returned.",
async options() {
const eventCategoriesList = await this._describeEventCategories();
return eventCategoriesList.map(({ SourceType: type }) => type);
},
},
eventCategories: {
type: "string[]",
label: "Event Categories",
description: "A list of event categories that you want to subscribe to",
async options() {
if (!this.sourceType) {
return [];
}
const eventCategoriesList = await this._describeEventCategories();
const sourceType = eventCategoriesList
.find(({ SourceType: type }) => type === this.sourceType);
return sourceType.EventCategories;
},
},
},
hooks: {
async activate() {
await this._clientRds().send(new CreateEventSubscriptionCommand({
SnsTopicArn: this.topic,
SubscriptionName: this.name,
Enabled: true,
SourceType: this.sourceType,
EventCategories: this.eventCategories,
}));
await this._clientSns().send(new SubscribeCommand({
TopicArn: this.topic,
Protocol: "https",
Endpoint: this.http.endpoint,
}));
},
async deactivate() {
await this._clientRds().send(new DeleteEventSubscriptionCommand({
SubscriptionName: this.name,
}));
const subscriptionArn = this._getSubscriptionArn();
await this._clientSns().send(new UnsubscribeCommand({
SubscriptionArn: subscriptionArn,
}));
},
},
methods: {
_getSubscriptionArn() {
return this.db.get("subscriptionArn");
},
_setSubscriptionArn(subscriptionArn) {
this.db.set("subscriptionArn", subscriptionArn);
},
_clientRds() {
return this.aws.getAWSClient(RDSClient, this.region);
},
_clientSns() {
return this.aws.getAWSClient(SNSClient, this.region);
},
async _describeEventCategories() {
const { EventCategoriesMapList: list } = await this._clientRds()
.send(new DescribeEventCategoriesCommand());
return list;
},
_isSubscriptionConfirmationEvent(body = {}) {
const { Type: type } = body;
return type === "SubscriptionConfirmation";
},
async _confirmSubscription({
SubscribeURL: callbackUrl,
TopicArn: topicArn,
}) {
console.log(`Confirming subscription to SNS topic '${topicArn}'`);
const data = await axios(this, {
url: callbackUrl,
});
const subscriptionArn = data
.ConfirmSubscriptionResponse
.ConfirmSubscriptionResult
.SubscriptionArn;
console.log(`Subscribed to SNS topic '${topicArn}'`);
return subscriptionArn;
},
generateMeta(body) {
const message = JSON.parse(body.Message);
return {
id: body.MessageId,
summary: message["Event Message"],
ts: Date.parse(body.Timestamp),
};
},
},
async run(event) {
const { body } = event;
if (this._isSubscriptionConfirmationEvent(body)) {
const subscriptionArn = await this._confirmSubscription(body);
this._setSubscriptionArn(subscriptionArn);
return;
}
const meta = this.generateMeta(body);
this.$emit(body, meta);
},
};
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