n8n
Version:
n8n Workflow Automation Tool
105 lines • 4.79 kB
JavaScript
;
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
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};
var __metadata = (this && this.__metadata) || function (k, v) {
if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.PrometheusEventBusMetricsService = void 0;
const config_1 = require("@n8n/config");
const di_1 = require("@n8n/di");
const prom_client_1 = __importDefault(require("prom-client"));
const message_event_bus_1 = require("../../eventbus/message-event-bus/message-event-bus");
let PrometheusEventBusMetricsService = class PrometheusEventBusMetricsService {
constructor(eventBus, config) {
this.eventBus = eventBus;
this.config = config;
this.countersByEventName = new Map();
}
get enabled() {
return this.config.includeMessageEventBusMetrics;
}
init() {
this.eventBus.on('metrics.eventBus.event', (event) => {
const counter = this.toCounter(event);
if (counter) {
const labels = this.toLabels(event);
counter.inc(labels, 1);
}
});
}
toCounter(event) {
const { eventName } = event;
if (!this.countersByEventName.has(eventName)) {
const metricName = this.toMetricName(eventName);
if (metricName) {
const labels = this.toLabels(event);
const counter = new prom_client_1.default.Counter({
name: metricName,
help: `Total number of ${eventName} events.`,
labelNames: Object.keys(labels),
});
this.countersByEventName.set(eventName, counter);
}
}
return this.countersByEventName.get(eventName);
}
toMetricName(eventName) {
const metricName = `${this.config.prefix}${eventName.replace('n8n.', '').replace(/\./g, '_')}_total`;
if (prom_client_1.default.validateMetricName(metricName)) {
return metricName;
}
return null;
}
toLabels(event) {
const { __type, eventName, payload } = event;
switch (__type) {
case "$$EventMessageAudit":
if (eventName.startsWith('n8n.audit.user.credentials')) {
return this.config.includeCredentialTypeLabel
? {
credential_type: String((event.payload.credentialType ?? 'unknown').replace(/\./g, '_')),
}
: {};
}
if (eventName.startsWith('n8n.audit.workflow')) {
return this.buildWorkflowLabels(payload);
}
break;
case "$$EventMessageNode": {
const nodeLabels = this.buildWorkflowLabels(payload);
if (this.config.includeNodeTypeLabel) {
nodeLabels.node_type = String((payload.nodeType ?? 'unknown').replace('n8n-nodes-', '').replace(/\./g, '_'));
}
return nodeLabels;
}
case "$$EventMessageWorkflow":
return this.buildWorkflowLabels(payload);
}
return {};
}
buildWorkflowLabels(payload) {
const labels = {};
if (this.config.includeWorkflowIdLabel) {
labels.workflow_id = typeof payload.workflowId === 'string' ? payload.workflowId : 'unknown';
}
if (this.config.includeWorkflowNameLabel) {
labels.workflow_name =
typeof payload.workflowName === 'string' ? payload.workflowName : 'unknown';
}
return labels;
}
};
exports.PrometheusEventBusMetricsService = PrometheusEventBusMetricsService;
exports.PrometheusEventBusMetricsService = PrometheusEventBusMetricsService = __decorate([
(0, di_1.Service)(),
__metadata("design:paramtypes", [message_event_bus_1.MessageEventBus, config_1.PrometheusMetricsConfig])
], PrometheusEventBusMetricsService);
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