n8n-nodes-base
Version:
Base nodes of n8n
211 lines • 9.45 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.AwsSnsTrigger = void 0;
const get_1 = __importDefault(require("lodash/get"));
const n8n_workflow_1 = require("n8n-workflow");
const GenericFunctions_1 = require("./GenericFunctions");
const utils_1 = require("./utils");
class AwsSnsTrigger {
description = {
displayName: 'AWS SNS Trigger',
subtitle: '={{$parameter["topic"].split(\':\')[5]}}',
name: 'awsSnsTrigger',
icon: 'file:sns.svg',
group: ['trigger'],
version: 1,
description: 'Handle AWS SNS events via webhooks',
defaults: {
name: 'AWS SNS Trigger',
},
inputs: [],
outputs: [n8n_workflow_1.NodeConnectionTypes.Main],
credentials: utils_1.awsNodeCredentials,
webhooks: [
{
name: 'default',
httpMethod: 'POST',
responseMode: 'onReceived',
path: 'webhook',
},
],
properties: [
utils_1.awsNodeAuthOptions,
{
displayName: 'Topic',
name: 'topic',
type: 'resourceLocator',
default: { mode: 'list', value: '' },
required: true,
modes: [
{
displayName: 'From List',
name: 'list',
type: 'list',
placeholder: 'Select a topic...',
typeOptions: {
searchListMethod: 'listTopics',
searchable: true,
},
},
{
displayName: 'By URL',
name: 'url',
type: 'string',
placeholder: 'https://us-east-1.console.aws.amazon.com/sns/v3/home?region=us-east-1#/topic/arn:aws:sns:us-east-1:777777777777:your_topic',
validation: [
{
type: 'regex',
properties: {
regex: 'https:\\/\\/[0-9a-zA-Z\\-_]+\\.console\\.aws\\.amazon\\.com\\/sns\\/v3\\/home\\?region\\=[0-9a-zA-Z\\-_]+\\#\\/topic\\/arn:aws:sns:[0-9a-zA-Z\\-_]+:[0-9]+:[0-9a-zA-Z\\-_]+(?:\\/.*|)',
errorMessage: 'Not a valid AWS SNS Topic URL',
},
},
],
extractValue: {
type: 'regex',
regex: 'https:\\/\\/[0-9a-zA-Z\\-_]+\\.console\\.aws\\.amazon\\.com\\/sns\\/v3\\/home\\?region\\=[0-9a-zA-Z\\-_]+\\#\\/topic\\/(arn:aws:sns:[0-9a-zA-Z\\-_]+:[0-9]+:[0-9a-zA-Z\\-_]+)(?:\\/.*|)',
},
},
{
displayName: 'ID',
name: 'id',
type: 'string',
validation: [
{
type: 'regex',
properties: {
regex: 'arn:aws:sns:[0-9a-zA-Z\\-_]+:[0-9]+:[0-9a-zA-Z\\-_]+',
errorMessage: 'Not a valid AWS SNS Topic ARN',
},
},
],
placeholder: 'arn:aws:sns:your-aws-region:777777777777:your_topic',
},
],
},
],
};
methods = {
listSearch: {
async listTopics(filter, paginationToken) {
const returnData = [];
const params = paginationToken ? `NextToken=${encodeURIComponent(paginationToken)}` : '';
const data = await GenericFunctions_1.awsApiRequestSOAP.call(this, 'sns', 'GET', '/?Action=ListTopics&' + params);
let topics = data.ListTopicsResponse.ListTopicsResult.Topics.member;
const nextToken = data.ListTopicsResponse.ListTopicsResult.NextToken;
if (nextToken) {
paginationToken = nextToken;
}
else {
paginationToken = undefined;
}
if (!Array.isArray(topics)) {
topics = [topics];
}
for (const topic of topics) {
const topicArn = topic.TopicArn;
const arnParsed = topicArn.split(':');
const topicName = arnParsed[5];
const awsRegion = arnParsed[3];
if (filter && !topicName.includes(filter)) {
continue;
}
returnData.push({
name: topicName,
value: topicArn,
url: `https://${awsRegion}.console.aws.amazon.com/sns/v3/home?region=${awsRegion}#/topic/${topicArn}`,
});
}
return { results: returnData, paginationToken };
},
},
};
webhookMethods = {
default: {
async checkExists() {
const webhookData = this.getWorkflowStaticData('node');
const topic = this.getNodeParameter('topic', undefined, {
extractValue: true,
});
if (webhookData.webhookId === undefined) {
return false;
}
const params = [`TopicArn=${topic}`, 'Version=2010-03-31'];
const data = await GenericFunctions_1.awsApiRequestSOAP.call(this, 'sns', 'GET', '/?Action=ListSubscriptionsByTopic&' + params.join('&'));
const subscriptions = (0, get_1.default)(data, 'ListSubscriptionsByTopicResponse.ListSubscriptionsByTopicResult.Subscriptions');
if (!subscriptions?.member) {
return false;
}
let subscriptionMembers = subscriptions.member;
if (!Array.isArray(subscriptionMembers)) {
subscriptionMembers = [subscriptionMembers];
}
for (const subscription of subscriptionMembers) {
if (webhookData.webhookId === subscription.SubscriptionArn) {
return true;
}
}
return false;
},
async create() {
const webhookData = this.getWorkflowStaticData('node');
const webhookUrl = this.getNodeWebhookUrl('default');
const topic = this.getNodeParameter('topic', undefined, {
extractValue: true,
});
if (webhookUrl.includes('%20')) {
throw new n8n_workflow_1.NodeOperationError(this.getNode(), 'The name of the SNS Trigger Node is not allowed to contain any spaces!');
}
const params = [
`TopicArn=${topic}`,
`Endpoint=${webhookUrl}`,
`Protocol=${webhookUrl?.split(':')[0]}`,
'ReturnSubscriptionArn=true',
'Version=2010-03-31',
];
const { SubscribeResponse } = await GenericFunctions_1.awsApiRequestSOAP.call(this, 'sns', 'GET', '/?Action=Subscribe&' + params.join('&'));
webhookData.webhookId = SubscribeResponse.SubscribeResult.SubscriptionArn;
return true;
},
async delete() {
const webhookData = this.getWorkflowStaticData('node');
const params = [`SubscriptionArn=${webhookData.webhookId}`, 'Version=2010-03-31'];
try {
await GenericFunctions_1.awsApiRequestSOAP.call(this, 'sns', 'GET', '/?Action=Unsubscribe&' + params.join('&'));
}
catch (error) {
return false;
}
delete webhookData.webhookId;
return true;
},
},
};
async webhook() {
const req = this.getRequestObject();
const topic = this.getNodeParameter('topic', undefined, {
extractValue: true,
});
const body = (0, n8n_workflow_1.jsonParse)(req.rawBody.toString());
if (body.Type === 'SubscriptionConfirmation' && body.TopicArn === topic) {
const { Token } = body;
const params = [`TopicArn=${topic}`, `Token=${Token}`, 'Version=2010-03-31'];
await GenericFunctions_1.awsApiRequestSOAP.call(this, 'sns', 'GET', '/?Action=ConfirmSubscription&' + params.join('&'));
return {
noWebhookResponse: true,
};
}
if (body.Type === 'UnsubscribeConfirmation') {
return {};
}
//TODO verify message signature
return {
workflowData: [this.helpers.returnJsonArray(body)],
};
}
}
exports.AwsSnsTrigger = AwsSnsTrigger;
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