n8n
Version:
n8n Workflow Automation Tool
158 lines • 6.6 kB
JavaScript
"use strict";
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});
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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);
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.InstanceRegistryService = void 0;
const backend_common_1 = require("@n8n/backend-common");
const config_1 = require("@n8n/config");
const di_1 = require("@n8n/di");
const node_crypto_1 = require("node:crypto");
const n8n_core_1 = require("n8n-core");
const constants_1 = require("../../constants");
const instance_registry_types_1 = require("./instance-registry.types");
let InstanceRegistryService = class InstanceRegistryService {
constructor(instanceSettings, executionsConfig, logger) {
this.instanceSettings = instanceSettings;
this.executionsConfig = executionsConfig;
this.logger = logger;
this.heartbeatInterval = null;
this.instanceKey = (0, node_crypto_1.randomUUID)();
this.registeredAt = 0;
this.logger = this.logger.scoped('instance-registry');
}
async init() {
this.storage = await this.selectStorage();
this.registeredAt = Date.now();
const registration = this.buildRegistration();
await this.storage.register(registration);
this.startHeartbeat();
this.logger.info('Instance registered', {
instanceKey: this.instanceKey,
backend: this.storage.kind,
instanceType: this.instanceSettings.instanceType,
});
}
async shutdown() {
if (!this.storage)
return;
this.stopHeartbeat();
try {
await this.storage.unregister(this.instanceKey);
}
catch (error) {
this.logger.warn('Failed to unregister during shutdown', { error });
}
try {
await this.storage.destroy();
}
catch (error) {
this.logger.warn('Failed to destroy storage during shutdown', { error });
}
this.logger.debug('Instance unregistered');
}
async getAllInstances() {
return await this.storage.getAllRegistrations();
}
getLocalInstance() {
return this.buildRegistration();
}
async getLastKnownState() {
return await this.storage.getLastKnownState();
}
async saveLastKnownState(state) {
await this.storage.saveLastKnownState(state);
}
async cleanupStaleMembers() {
return await this.storage.cleanupStaleMembers();
}
get storageBackend() {
return this.storage.kind;
}
buildRegistration() {
return {
schemaVersion: 1,
instanceKey: this.instanceKey,
hostId: this.instanceSettings.hostId,
instanceType: this.instanceSettings.instanceType,
instanceRole: this.instanceSettings.instanceRole,
version: constants_1.N8N_VERSION,
registeredAt: this.registeredAt,
lastSeen: Date.now(),
};
}
async selectStorage() {
const useRedis = this.instanceSettings.isMultiMain || this.executionsConfig.mode === 'queue';
if (useRedis) {
const { RedisInstanceStorage } = await Promise.resolve().then(() => __importStar(require('./storage/redis-instance-storage')));
const { Container } = await Promise.resolve().then(() => __importStar(require('@n8n/di')));
return Container.get(RedisInstanceStorage);
}
const { MemoryInstanceStorage } = await Promise.resolve().then(() => __importStar(require('./storage/memory-storage')));
return new MemoryInstanceStorage();
}
startHeartbeat() {
this.heartbeatInterval = setInterval(async () => {
try {
await this.storage.heartbeat(this.buildRegistration());
this.logger.debug('Heartbeat updated');
}
catch (error) {
this.logger.warn('Heartbeat failed', { error });
}
}, instance_registry_types_1.REGISTRY_CONSTANTS.HEARTBEAT_INTERVAL_MS);
}
stopHeartbeat() {
if (this.heartbeatInterval) {
clearInterval(this.heartbeatInterval);
this.heartbeatInterval = null;
}
}
};
exports.InstanceRegistryService = InstanceRegistryService;
exports.InstanceRegistryService = InstanceRegistryService = __decorate([
(0, di_1.Service)(),
__metadata("design:paramtypes", [n8n_core_1.InstanceSettings,
config_1.ExecutionsConfig,
backend_common_1.Logger])
], InstanceRegistryService);
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