n8n/packages/nodes-base/nodes/Amqp/AmqpTrigger.node.ts

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import type { ContainerOptions, EventContext, Message, ReceiverOptions } from 'rhea';
import { create_container } from 'rhea';
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import type { ITriggerFunctions } from 'n8n-core';
import type { IDataObject, INodeType, INodeTypeDescription, ITriggerResponse } from 'n8n-workflow';
import { deepCopy, jsonParse, NodeOperationError } from 'n8n-workflow';
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export class AmqpTrigger implements INodeType {
description: INodeTypeDescription = {
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displayName: 'AMQP Trigger',
name: 'amqpTrigger',
refactor: Apply more `eslint-plugin-n8n-nodes-base` rules (#3534) * :zap: Update `lintfix` script * :zap: Run baseline `lintfix` * :fire: Remove unneeded exceptions (#3538) * :fire: Remove exceptions for `node-param-default-wrong-for-simplify` * :fire: Remove exceptions for `node-param-placeholder-miscased-id` * :zap: Update version * :shirt: Apply `node-param-placeholder-missing` (#3542) * :shirt: Apply `filesystem-wrong-cred-filename` (#3543) * :shirt: Apply `node-param-description-missing-from-dynamic-options` (#3545) Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply `node-class-description-empty-string` (#3546) * :shirt: Apply `node-class-description-icon-not-svg` (#3548) * :shirt: Apply `filesystem-wrong-node-filename` (#3549) Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Expand lintings to credentials (#3550) * :shirt: Apply `node-param-multi-options-type-unsorted-items` (#3552) * :zap: fix * :zap: Minor fixes Co-authored-by: Michael Kret <michael.k@radency.com> * :shirt: Apply `node-param-description-wrong-for-dynamic-multi-options` (#3541) * :zap: Add new lint rule, node-param-description-wrong-for-dynamic-multi-options * :zap: Fix with updated linting rules * :zap: Minor fixes Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply `node-param-description-boolean-without-whether` (#3553) * :zap: fix * Update packages/nodes-base/nodes/Clockify/ProjectDescription.ts Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply node-param-display-name-wrong-for-dynamic-multi-options (#3537) * :shirt: Add exceptions * :shirt: Add exception * :pencil2: Alphabetize rules * :zap: Restore `lintfix` command Co-authored-by: agobrech <45268029+agobrech@users.noreply.github.com> Co-authored-by: Omar Ajoue <krynble@gmail.com> Co-authored-by: Michael Kret <michael.k@radency.com> Co-authored-by: brianinoa <54530642+brianinoa@users.noreply.github.com> Co-authored-by: Michael Kret <88898367+michael-radency@users.noreply.github.com>
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// eslint-disable-next-line n8n-nodes-base/node-class-description-icon-not-svg
icon: 'file:amqp.png',
group: ['trigger'],
version: 1,
description: 'Listens to AMQP 1.0 Messages',
defaults: {
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name: 'AMQP Trigger',
},
inputs: [],
outputs: ['main'],
credentials: [
{
name: 'amqp',
required: true,
},
],
properties: [
// Node properties which the user gets displayed and
// can change on the node.
{
displayName: 'Queue / Topic',
name: 'sink',
type: 'string',
default: '',
placeholder: 'topic://sourcename.something',
refactor: Apply more `eslint-plugin-n8n-nodes-base` autofixable rules (#3432) * :zap: Update `lintfix` script * :shirt: Remove unneeded lint exceptions * :shirt: Run baseline `lintfix` * :shirt: Apply `node-param-description-miscased-url` (#3441) * :shirt: Apply `rule node-param-placeholder-miscased-id` (#3443) Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply `node-param-option-name-wrong-for-upsert` (#3446) * :shirt: Apply `node-param-min-value-wrong-for-limit` (#3442) Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * Apply `node-param-display-name-wrong-for-dynamic-options` (#3454) * :hammer: fix * :zap: Fix `Assigned To` fields Co-authored-by: Michael Kret <michael.k@radency.com> * :shirt: Apply `rule node-param-default-wrong-for-number` (#3453) * :shirt: Apply `node-param-default-wrong-for-string` (#3452) Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * Apply `node-param-display-name-miscased` (#3449) * :hammer: fix * :hammer: exceptions * :zap: review fixes * :shirt: Apply `node-param-description-lowercase-first-char` (#3451) * :zap: fix * :zap: review fixes * :zap: fix Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply `node-param-description-wrong-for-dynamic-options` (#3456) * Rule working as intended * Add rule * :fire: Remove repetitions * :shirt: Add exceptions Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Small fix for `node-param-description-wrong-for-dynamic-options` * :shirt: Apply `node-param-default-wrong-for-fixed-collection` (#3460) * :shirt: Apply `node-param-description-line-break-html-tag` (#3462) * :shirt: Run baseline `lintfix` * :shirt: Apply `node-param-options-type-unsorted-items` (#3459) * :zap: fix * :hammer: exceptions * Add exception for Salesmate and Zoom Co-authored-by: Michael Kret <michael.k@radency.com> Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :zap: Restore `lintfix` command Co-authored-by: Omar Ajoue <krynble@gmail.com> Co-authored-by: Michael Kret <88898367+michael-radency@users.noreply.github.com> Co-authored-by: agobrech <45268029+agobrech@users.noreply.github.com> Co-authored-by: Michael Kret <michael.k@radency.com> Co-authored-by: brianinoa <54530642+brianinoa@users.noreply.github.com>
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description: 'Name of the queue of topic to listen to',
},
{
displayName: 'Clientname',
name: 'clientname',
type: 'string',
default: '',
placeholder: 'for durable/persistent topic subscriptions, example: "n8n"',
description: 'Leave empty for non-durable topic subscriptions or queues',
},
{
displayName: 'Subscription',
name: 'subscription',
type: 'string',
default: '',
placeholder: 'for durable/persistent topic subscriptions, example: "order-worker"',
description: 'Leave empty for non-durable topic subscriptions or queues',
},
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{
displayName: 'Options',
name: 'options',
type: 'collection',
placeholder: 'Add Option',
default: {},
options: [
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{
displayName: 'Container ID',
name: 'containerId',
type: 'string',
default: '',
description: 'Will be used to pass to the RHEA Backend as container_id',
},
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{
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displayName: 'Convert Body To String',
name: 'jsonConvertByteArrayToString',
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type: 'boolean',
default: false,
description:
'Whether to convert JSON Body content (["body"]["content"]) from Byte Array to string. Needed for Azure Service Bus.',
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},
{
displayName: 'JSON Parse Body',
name: 'jsonParseBody',
type: 'boolean',
default: false,
refactor: Apply more `eslint-plugin-n8n-nodes-base` rules (#3534) * :zap: Update `lintfix` script * :zap: Run baseline `lintfix` * :fire: Remove unneeded exceptions (#3538) * :fire: Remove exceptions for `node-param-default-wrong-for-simplify` * :fire: Remove exceptions for `node-param-placeholder-miscased-id` * :zap: Update version * :shirt: Apply `node-param-placeholder-missing` (#3542) * :shirt: Apply `filesystem-wrong-cred-filename` (#3543) * :shirt: Apply `node-param-description-missing-from-dynamic-options` (#3545) Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply `node-class-description-empty-string` (#3546) * :shirt: Apply `node-class-description-icon-not-svg` (#3548) * :shirt: Apply `filesystem-wrong-node-filename` (#3549) Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Expand lintings to credentials (#3550) * :shirt: Apply `node-param-multi-options-type-unsorted-items` (#3552) * :zap: fix * :zap: Minor fixes Co-authored-by: Michael Kret <michael.k@radency.com> * :shirt: Apply `node-param-description-wrong-for-dynamic-multi-options` (#3541) * :zap: Add new lint rule, node-param-description-wrong-for-dynamic-multi-options * :zap: Fix with updated linting rules * :zap: Minor fixes Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply `node-param-description-boolean-without-whether` (#3553) * :zap: fix * Update packages/nodes-base/nodes/Clockify/ProjectDescription.ts Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply node-param-display-name-wrong-for-dynamic-multi-options (#3537) * :shirt: Add exceptions * :shirt: Add exception * :pencil2: Alphabetize rules * :zap: Restore `lintfix` command Co-authored-by: agobrech <45268029+agobrech@users.noreply.github.com> Co-authored-by: Omar Ajoue <krynble@gmail.com> Co-authored-by: Michael Kret <michael.k@radency.com> Co-authored-by: brianinoa <54530642+brianinoa@users.noreply.github.com> Co-authored-by: Michael Kret <88898367+michael-radency@users.noreply.github.com>
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description: 'Whether to parse the body to an object',
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},
{
displayName: 'Messages per Cicle',
name: 'pullMessagesNumber',
type: 'number',
default: 100,
description: 'Number of messages to pull from the bus for every cicle',
},
{
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displayName: 'Only Body',
name: 'onlyBody',
type: 'boolean',
default: false,
refactor: Apply more `eslint-plugin-n8n-nodes-base` rules (#3534) * :zap: Update `lintfix` script * :zap: Run baseline `lintfix` * :fire: Remove unneeded exceptions (#3538) * :fire: Remove exceptions for `node-param-default-wrong-for-simplify` * :fire: Remove exceptions for `node-param-placeholder-miscased-id` * :zap: Update version * :shirt: Apply `node-param-placeholder-missing` (#3542) * :shirt: Apply `filesystem-wrong-cred-filename` (#3543) * :shirt: Apply `node-param-description-missing-from-dynamic-options` (#3545) Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply `node-class-description-empty-string` (#3546) * :shirt: Apply `node-class-description-icon-not-svg` (#3548) * :shirt: Apply `filesystem-wrong-node-filename` (#3549) Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Expand lintings to credentials (#3550) * :shirt: Apply `node-param-multi-options-type-unsorted-items` (#3552) * :zap: fix * :zap: Minor fixes Co-authored-by: Michael Kret <michael.k@radency.com> * :shirt: Apply `node-param-description-wrong-for-dynamic-multi-options` (#3541) * :zap: Add new lint rule, node-param-description-wrong-for-dynamic-multi-options * :zap: Fix with updated linting rules * :zap: Minor fixes Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply `node-param-description-boolean-without-whether` (#3553) * :zap: fix * Update packages/nodes-base/nodes/Clockify/ProjectDescription.ts Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply node-param-display-name-wrong-for-dynamic-multi-options (#3537) * :shirt: Add exceptions * :shirt: Add exception * :pencil2: Alphabetize rules * :zap: Restore `lintfix` command Co-authored-by: agobrech <45268029+agobrech@users.noreply.github.com> Co-authored-by: Omar Ajoue <krynble@gmail.com> Co-authored-by: Michael Kret <michael.k@radency.com> Co-authored-by: brianinoa <54530642+brianinoa@users.noreply.github.com> Co-authored-by: Michael Kret <88898367+michael-radency@users.noreply.github.com>
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description: 'Whether to return only the body property',
},
{
displayName: 'Reconnect',
name: 'reconnect',
type: 'boolean',
default: true,
refactor: Apply more `eslint-plugin-n8n-nodes-base` rules (#3534) * :zap: Update `lintfix` script * :zap: Run baseline `lintfix` * :fire: Remove unneeded exceptions (#3538) * :fire: Remove exceptions for `node-param-default-wrong-for-simplify` * :fire: Remove exceptions for `node-param-placeholder-miscased-id` * :zap: Update version * :shirt: Apply `node-param-placeholder-missing` (#3542) * :shirt: Apply `filesystem-wrong-cred-filename` (#3543) * :shirt: Apply `node-param-description-missing-from-dynamic-options` (#3545) Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply `node-class-description-empty-string` (#3546) * :shirt: Apply `node-class-description-icon-not-svg` (#3548) * :shirt: Apply `filesystem-wrong-node-filename` (#3549) Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Expand lintings to credentials (#3550) * :shirt: Apply `node-param-multi-options-type-unsorted-items` (#3552) * :zap: fix * :zap: Minor fixes Co-authored-by: Michael Kret <michael.k@radency.com> * :shirt: Apply `node-param-description-wrong-for-dynamic-multi-options` (#3541) * :zap: Add new lint rule, node-param-description-wrong-for-dynamic-multi-options * :zap: Fix with updated linting rules * :zap: Minor fixes Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply `node-param-description-boolean-without-whether` (#3553) * :zap: fix * Update packages/nodes-base/nodes/Clockify/ProjectDescription.ts Co-authored-by: Iván Ovejero <ivov.src@gmail.com> * :shirt: Apply node-param-display-name-wrong-for-dynamic-multi-options (#3537) * :shirt: Add exceptions * :shirt: Add exception * :pencil2: Alphabetize rules * :zap: Restore `lintfix` command Co-authored-by: agobrech <45268029+agobrech@users.noreply.github.com> Co-authored-by: Omar Ajoue <krynble@gmail.com> Co-authored-by: Michael Kret <michael.k@radency.com> Co-authored-by: brianinoa <54530642+brianinoa@users.noreply.github.com> Co-authored-by: Michael Kret <88898367+michael-radency@users.noreply.github.com>
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description: 'Whether to automatically reconnect if disconnected',
},
{
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displayName: 'Reconnect Limit',
name: 'reconnectLimit',
type: 'number',
default: 50,
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description: 'Maximum number of reconnect attempts',
},
{
displayName: 'Sleep Time',
name: 'sleepTime',
type: 'number',
default: 10,
description: 'Milliseconds to sleep after every cicle',
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},
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],
},
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],
};
async trigger(this: ITriggerFunctions): Promise<ITriggerResponse> {
const credentials = await this.getCredentials('amqp');
const sink = this.getNodeParameter('sink', '') as string;
const clientname = this.getNodeParameter('clientname', '') as string;
const subscription = this.getNodeParameter('subscription', '') as string;
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const options = this.getNodeParameter('options', {}) as IDataObject;
const pullMessagesNumber = (options.pullMessagesNumber as number) || 100;
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const containerId = options.containerId as string;
const containerReconnect = (options.reconnect as boolean) || true;
const containerReconnectLimit = (options.reconnectLimit as number) || 50;
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if (sink === '') {
:sparkles: Improve node error handling (#1309) * Add path mapping and response error interfaces * Add error handling and throwing functionality * Refactor error handling into a single function * Re-implement error handling in Hacker News node * Fix linting details * Re-implement error handling in Spotify node * Re-implement error handling in G Suite Admin node * :construction: create basic setup NodeError * :construction: add httpCodes * :construction: add path priolist * :construction: handle statusCode in error, adjust interfaces * :construction: fixing type issues w/Ivan * :construction: add error exploration * 👔 fix linter issues * :wrench: improve object check * :construction: remove path passing from NodeApiError * :construction: add multi error + refactor findProperty method * 👔 allow any * :wrench: handle multi error message callback * :zap: change return type of callback * :zap: add customCallback to MultiError * :construction: refactor to use INode * :hammer: handle arrays, continue search after first null property found * 🚫 refactor method access * :construction: setup NodeErrorView * :zap: change timestamp to Date.now * :books: Add documentation for methods and constants * :construction: change message setting * 🚚 move NodeErrors to workflow * :sparkles: add new ErrorView for Nodes * :art: improve error notification * :art: refactor interfaces * :zap: add WorkflowOperationError, refactor error throwing * 👕 fix linter issues * :art: rename param * :bug: fix handling normal errors * :zap: add usage of NodeApiError * :art: fix throw new error instead of constructor * :art: remove unnecessary code/comments * :art: adjusted spacing + updated status messages * :art: fix tab indentation * ✨ Replace current errors with custom errors (#1576) * :zap: Introduce NodeApiError in catch blocks * :zap: Introduce NodeOperationError in nodes * :zap: Add missing errors and remove incompatible * :zap: Fix NodeOperationError in incompatible nodes * :wrench: Adjust error handling in missed nodes PayPal, FileMaker, Reddit, Taiga and Facebook Graph API nodes * :hammer: Adjust Strava Trigger node error handling * :hammer: Adjust AWS nodes error handling * :hammer: Remove duplicate instantiation of NodeApiError * :bug: fix strava trigger node error handling * Add XML parsing to NodeApiError constructor (#1633) * :bug: Remove type annotation from catch variable * :sparkles: Add XML parsing to NodeApiError * :zap: Simplify error handling in Rekognition node * :zap: Pass in XML flag in generic functions * :fire: Remove try/catch wrappers at call sites * :hammer: Refactor setting description from XML * :hammer: Refactor let to const in resource loaders * :zap: Find property in parsed XML * :zap: Change let to const * :fire: Remove unneeded try/catch block * :shirt: Fix linting issues * :bug: Fix errors from merge conflict resolution * :zap: Add custom errors to latest contributions * :shirt: Fix linting issues * :zap: Refactor MongoDB helpers for custom errors * :bug: Correct custom error type * :zap: Apply feedback to A nodes * :zap: Apply feedback to missed A node * :zap: Apply feedback to B-D nodes * :zap: Apply feedback to E-F nodes * :zap: Apply feedback to G nodes * :zap: Apply feedback to H-L nodes * :zap: Apply feedback to M nodes * :zap: Apply feedback to P nodes * :zap: Apply feedback to R nodes * :zap: Apply feedback to S nodes * :zap: Apply feedback to T nodes * :zap: Apply feedback to V-Z nodes * :zap: Add HTTP code to iterable node error * :hammer: Standardize e as error * :hammer: Standardize err as error * :zap: Fix error handling for non-standard nodes Co-authored-by: Ben Hesseldieck <b.hesseldieck@gmail.com> Co-authored-by: Ben Hesseldieck <b.hesseldieck@gmail.com> Co-authored-by: Ben Hesseldieck <1849459+BHesseldieck@users.noreply.github.com>
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throw new NodeOperationError(this.getNode(), 'Queue or Topic required!');
}
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let durable = false;
if (subscription && clientname) {
durable = true;
}
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const container = create_container();
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let lastMsgId: string | number | Buffer | undefined = undefined;
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container.on('receiver_open', (context: EventContext) => {
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context.receiver?.add_credit(pullMessagesNumber);
});
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container.on('message', (context: EventContext) => {
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// No message in the context
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if (!context.message) {
return;
}
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// ignore duplicate message check, don't think it's necessary, but it was in the rhea-lib example code
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if (context.message.message_id && context.message.message_id === lastMsgId) {
return;
}
lastMsgId = context.message.message_id;
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let data = context.message;
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if (options.jsonConvertByteArrayToString === true && data.body.content !== undefined) {
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// The buffer is not ready... Stringify and parse back to load it.
const cont = deepCopy(data.body.content);
data.body = String.fromCharCode.apply(null, cont.data as number[]);
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}
if (options.jsonConvertByteArrayToString === true && data.body.content !== undefined) {
// The buffer is not ready... Stringify and parse back to load it.
const cont = deepCopy(data.body.content);
data.body = String.fromCharCode.apply(null, cont.data as number[]);
}
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if (options.jsonConvertByteArrayToString === true && data.body.content !== undefined) {
// The buffer is not ready... Stringify and parse back to load it.
const content = deepCopy(data.body.content);
data.body = String.fromCharCode.apply(null, content.data as number[]);
}
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if (options.jsonParseBody === true) {
data.body = jsonParse(data.body as string);
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}
if (options.onlyBody === true) {
data = data.body;
}
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this.emit([this.helpers.returnJsonArray([data as any])]);
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if (!context.receiver?.has_credit()) {
setTimeout(() => {
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context.receiver?.add_credit(pullMessagesNumber);
}, (options.sleepTime as number) || 10);
}
});
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/*
Values are documentet here: https://github.com/amqp/rhea#container
*/
const connectOptions: ContainerOptions = {
host: credentials.hostname,
hostname: credentials.hostname,
port: credentials.port,
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reconnect: containerReconnect,
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reconnect_limit: containerReconnectLimit,
username: credentials.username ? credentials.username : undefined,
password: credentials.password ? credentials.password : undefined,
transport: credentials.transportType ? credentials.transportType : undefined,
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container_id: containerId ? containerId : undefined,
id: containerId ? containerId : undefined,
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};
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const connection = container.connect(connectOptions);
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const clientOptions: ReceiverOptions = {
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name: subscription ? subscription : undefined,
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source: {
address: sink,
durable: durable ? 2 : undefined,
expiry_policy: durable ? 'never' : undefined,
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},
credit_window: 0, // prefetch 1
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};
connection.open_receiver(clientOptions);
// The "closeFunction" function gets called by n8n whenever
// the workflow gets deactivated and can so clean up.
async function closeFunction() {
container.removeAllListeners('receiver_open');
container.removeAllListeners('message');
connection.close();
}
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// The "manualTriggerFunction" function gets called by n8n
// when a user is in the workflow editor and starts the
// workflow manually.
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// for AMQP it doesn't make much sense to wait here but
// for a new user who doesn't know how this works, it's better to wait and show a respective info message
const manualTriggerFunction = async () => {
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await new Promise((resolve, reject) => {
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const timeoutHandler = setTimeout(() => {
reject(
new Error(
'Aborted, no message received within 30secs. This 30sec timeout is only set for "manually triggered execution". Active Workflows will listen indefinitely.',
),
);
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}, 30000);
container.on('message', (context: EventContext) => {
// Check if the only property present in the message is body
// in which case we only emit the content of the body property
// otherwise we emit all properties and their content
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const message = context.message as Message;
if (Object.keys(message)[0] === 'body' && Object.keys(message).length === 1) {
this.emit([this.helpers.returnJsonArray([message.body])]);
} else {
this.emit([this.helpers.returnJsonArray([message as any])]);
}
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clearTimeout(timeoutHandler);
resolve(true);
});
});
};
return {
closeFunction,
manualTriggerFunction,
};
}
}