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301import type { DateTime } from 'luxon';
import { z } from 'zod';
import type { INodeCredentials } from './interfaces';
// ===============================
// General Enums And Interfaces
// ===============================
export const enum EventMessageTypeNames {
generic = '$$EventMessage',
audit = '$$EventMessageAudit',
confirm = '$$EventMessageConfirm',
workflow = '$$EventMessageWorkflow',
node = '$$EventMessageNode',
execution = '$$EventMessageExecution',
aiNode = '$$EventMessageAiNode',
runner = '$$EventMessageRunner',
queue = '$$EventMessageQueue',
}
export const enum MessageEventBusDestinationTypeNames {
abstract = '$$AbstractMessageEventBusDestination',
webhook = '$$MessageEventBusDestinationWebhook',
sentry = '$$MessageEventBusDestinationSentry',
syslog = '$$MessageEventBusDestinationSyslog',
}
export const messageEventBusDestinationTypeNames = [
MessageEventBusDestinationTypeNames.abstract,
MessageEventBusDestinationTypeNames.webhook,
MessageEventBusDestinationTypeNames.sentry,
MessageEventBusDestinationTypeNames.syslog,
];
// ===============================
// Event Message Interfaces
// ===============================
export interface IAbstractEventMessage {
__type: EventMessageTypeNames;
id: string;
ts: DateTime;
eventName: string;
message: string;
// eslint-disable-next-line @typescript-eslint/no-explicit-any
payload: any;
}
// ===============================
// Event Destination Zod Schemas
// ===============================
// Circuit Breaker Options Schema
const circuitBreakerSchema = z
.object({
maxFailures: z.number().int().positive().optional(),
maxDuration: z.number().int().positive().optional(),
halfOpenRequests: z.number().int().positive().optional(),
failureWindow: z.number().int().positive().optional(),
maxConcurrentHalfOpenRequests: z.number().int().positive().optional(),
})
.optional();
// Webhook Parameter Item Schema
const webhookParameterItemSchema = z.object({
parameters: z.array(
z.object({
name: z.string(),
value: z.union([z.string(), z.number(), z.boolean(), z.null()]).nullable(),
}),
),
});
// Webhook Parameter Options Schema
const webhookParameterOptionsSchema = z
.object({
batch: z
.object({
batchSize: z.number().int().positive().optional(),
batchInterval: z.number().int().positive().optional(),
})
.optional(),
allowUnauthorizedCerts: z.boolean().optional(),
queryParameterArrays: z.enum(['indices', 'brackets', 'repeat']).optional(),
redirect: z
.object({
followRedirects: z.boolean().optional(),
maxRedirects: z.number().int().positive().optional(),
})
.optional(),
response: z
.object({
response: z
.object({
fullResponse: z.boolean().optional(),
neverError: z.boolean().optional(),
responseFormat: z.string().optional(),
outputPropertyName: z.string().optional(),
})
.optional(),
})
.optional(),
proxy: z
.object({
protocol: z.enum(['https', 'http']),
host: z.string(),
port: z.number().int().positive(),
})
.optional(),
timeout: z.number().int().positive().optional(),
socket: z
.object({
keepAlive: z.boolean().optional(),
maxSockets: z.number().int().positive().optional(),
maxFreeSockets: z.number().int().positive().optional(),
})
.optional(),
})
.optional();
// Base Destination Options Schema
export const MessageEventBusDestinationOptionsSchema = z.object({
__type: z
.enum([
'$$AbstractMessageEventBusDestination',
'$$MessageEventBusDestinationWebhook',
'$$MessageEventBusDestinationSentry',
'$$MessageEventBusDestinationSyslog',
])
.optional(),
id: z.string().min(1).optional(),
label: z.string().min(1).optional(),
enabled: z.boolean().optional(),
subscribedEvents: z.array(z.string()).optional(),
credentials: z.record(z.unknown()).optional(),
anonymizeAuditMessages: z.boolean().optional(),
circuitBreaker: circuitBreakerSchema,
});
// Webhook Destination Schema
export const MessageEventBusDestinationWebhookOptionsSchema =
MessageEventBusDestinationOptionsSchema.extend({
__type: z.literal('$$MessageEventBusDestinationWebhook'),
url: z.string().url(),
responseCodeMustMatch: z.boolean().optional(),
expectedStatusCode: z.number().int().optional(),
method: z.string().optional(),
authentication: z
.enum(['predefinedCredentialType', 'genericCredentialType', 'none'])
.optional(),
sendQuery: z.boolean().optional(),
sendHeaders: z.boolean().optional(),
genericAuthType: z.string().optional(),
nodeCredentialType: z.string().optional(),
specifyHeaders: z.string().optional(),
specifyQuery: z.string().optional(),
jsonQuery: z.string().optional(),
jsonHeaders: z.string().optional(),
headerParameters: webhookParameterItemSchema.optional(),
queryParameters: webhookParameterItemSchema.optional(),
sendPayload: z.boolean().optional(),
options: webhookParameterOptionsSchema,
});
// Sentry Destination Schema
export const MessageEventBusDestinationSentryOptionsSchema =
MessageEventBusDestinationOptionsSchema.extend({
__type: z.literal('$$MessageEventBusDestinationSentry'),
dsn: z.string().url(),
tracesSampleRate: z.number().min(0).max(1).optional(),
sendPayload: z.boolean().optional(),
});
// Syslog Destination Schema
export const MessageEventBusDestinationSyslogOptionsSchema =
MessageEventBusDestinationOptionsSchema.extend({
__type: z.literal('$$MessageEventBusDestinationSyslog'),
expectedStatusCode: z.number().int().optional(),
host: z.string().min(1),
port: z.number().int().positive().optional(),
protocol: z.enum(['udp', 'tcp', 'tls']).optional(),
facility: z.number().int().min(0).max(23).optional(),
app_name: z.string().optional(),
eol: z.string().optional(),
tlsCa: z.string().optional(),
});
// ===============================
// Event Destination Types (Inferred from Zod Schemas)
// ===============================
// Base destination options type - __type is optional
export type MessageEventBusDestinationOptions = Omit<
z.infer<typeof MessageEventBusDestinationOptionsSchema>,
'__type' | 'credentials'
> & {
__type?: MessageEventBusDestinationTypeNames;
credentials?: INodeCredentials;
};
export type MessageEventBusDestinationWebhookParameterItem = z.infer<
typeof webhookParameterItemSchema
>;
export type MessageEventBusDestinationWebhookParameterOptions = z.infer<
typeof webhookParameterOptionsSchema
>;
// Specific destination types - use full enum type for compatibility with classes
export type MessageEventBusDestinationWebhookOptions = Omit<
z.infer<typeof MessageEventBusDestinationWebhookOptionsSchema>,
'__type' | 'credentials'
> & {
__type?: MessageEventBusDestinationTypeNames;
credentials?: INodeCredentials;
};
export type MessageEventBusDestinationSyslogOptions = Omit<
z.infer<typeof MessageEventBusDestinationSyslogOptionsSchema>,
'__type' | 'credentials'
> & {
__type?: MessageEventBusDestinationTypeNames;
credentials?: INodeCredentials;
};
export type MessageEventBusDestinationSentryOptions = Omit<
z.infer<typeof MessageEventBusDestinationSentryOptionsSchema>,
'__type' | 'credentials'
> & {
__type?: MessageEventBusDestinationTypeNames;
credentials?: INodeCredentials;
};
// ==================================
// Event Destination Default Settings
// ==================================
export const defaultMessageEventBusDestinationOptions: MessageEventBusDestinationOptions = {
__type: MessageEventBusDestinationTypeNames.abstract,
id: '',
label: 'New Event Destination',
enabled: true,
subscribedEvents: ['n8n.audit', 'n8n.workflow'],
credentials: {},
anonymizeAuditMessages: false,
};
export const defaultMessageEventBusDestinationSyslogOptions: MessageEventBusDestinationSyslogOptions =
{
...defaultMessageEventBusDestinationOptions,
__type: MessageEventBusDestinationTypeNames.syslog,
label: 'Syslog Server',
expectedStatusCode: 200,
host: '127.0.0.1',
port: 514,
protocol: 'tcp',
facility: 16,
app_name: 'n8n',
eol: '\n',
};
export const defaultMessageEventBusDestinationWebhookOptions: MessageEventBusDestinationWebhookOptions =
{
...defaultMessageEventBusDestinationOptions,
__type: MessageEventBusDestinationTypeNames.webhook,
credentials: {},
label: 'Webhook Endpoint',
expectedStatusCode: 200,
responseCodeMustMatch: false,
url: 'https://',
method: 'POST',
authentication: 'none',
sendQuery: false,
sendHeaders: false,
genericAuthType: '',
nodeCredentialType: '',
specifyHeaders: '',
specifyQuery: '',
jsonQuery: '',
jsonHeaders: '',
headerParameters: { parameters: [] },
queryParameters: { parameters: [] },
sendPayload: true,
options: {},
};
export const defaultMessageEventBusDestinationSentryOptions: MessageEventBusDestinationSentryOptions =
{
...defaultMessageEventBusDestinationOptions,
__type: MessageEventBusDestinationTypeNames.sentry,
label: 'Sentry DSN',
dsn: 'https://',
sendPayload: true,
};