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import { APPLICATION_CREATED } from '../../types/events';
import { IApplication } from './models';
import { IUnleashStores } from '../../types/stores';
import { IUnleashConfig } from '../../types/option';
import { IEventStore } from '../../types/stores/event-store';
import {
IClientApplication,
IClientApplicationsStore,
} from '../../types/stores/client-applications-store';
import { IFeatureToggleStore } from '../../types/stores/feature-toggle-store';
import { IStrategyStore } from '../../types/stores/strategy-store';
import { IClientInstanceStore } from '../../types/stores/client-instance-store';
import { IApplicationQuery } from '../../types/query';
import { IClientApp } from '../../types/model';
import { clientRegisterSchema } from './schema';
import { minutesToMilliseconds, secondsToMilliseconds } from 'date-fns';
import { IClientMetricsStoreV2 } from '../../types/stores/client-metrics-store-v2';
import { clientMetricsSchema } from './schema';
import { PartialSome } from '../../types/partial';
export default class ClientInstanceService {
apps = {};
logger = null;
seenClients: Record<string, IClientApp> = {};
private timers: NodeJS.Timeout[] = [];
private clientMetricsStoreV2: IClientMetricsStoreV2;
private strategyStore: IStrategyStore;
private featureToggleStore: IFeatureToggleStore;
private clientApplicationsStore: IClientApplicationsStore;
private clientInstanceStore: IClientInstanceStore;
private eventStore: IEventStore;
private bulkInterval: number;
private announcementInterval: number;
constructor(
{
clientMetricsStoreV2,
strategyStore,
featureToggleStore,
clientInstanceStore,
clientApplicationsStore,
eventStore,
}: Pick<
IUnleashStores,
| 'clientMetricsStoreV2'
| 'strategyStore'
| 'featureToggleStore'
| 'clientApplicationsStore'
| 'clientInstanceStore'
| 'eventStore'
>,
{ getLogger }: Pick<IUnleashConfig, 'getLogger'>,
bulkInterval = secondsToMilliseconds(5),
announcementInterval = minutesToMilliseconds(5),
) {
this.clientMetricsStoreV2 = clientMetricsStoreV2;
this.strategyStore = strategyStore;
this.featureToggleStore = featureToggleStore;
this.clientApplicationsStore = clientApplicationsStore;
this.clientInstanceStore = clientInstanceStore;
this.eventStore = eventStore;
this.logger = getLogger(
'/services/client-metrics/client-instance-service.ts',
);
this.bulkInterval = bulkInterval;
this.announcementInterval = announcementInterval;
this.timers.push(
setInterval(() => this.bulkAdd(), this.bulkInterval).unref(),
);
this.timers.push(
setInterval(
() => this.announceUnannounced(),
this.announcementInterval,
).unref(),
);
}
public async registerInstance(
data: PartialSome<IClientApp, 'instanceId'>,
clientIp: string,
): Promise<void> {
const value = await clientMetricsSchema.validateAsync(data);
await this.clientInstanceStore.setLastSeen({
appName: value.appName,
instanceId: value.instanceId,
environment: value.environment,
clientIp: clientIp,
});
}
public async registerClient(
data: PartialSome<IClientApp, 'instanceId'>,
clientIp: string,
): Promise<void> {
const value = await clientRegisterSchema.validateAsync(data);
value.clientIp = clientIp;
value.createdBy = clientIp;
this.seenClients[this.clientKey(value)] = value;
}
async announceUnannounced(): Promise<void> {
if (this.clientApplicationsStore) {
const appsToAnnounce =
await this.clientApplicationsStore.setUnannouncedToAnnounced();
if (appsToAnnounce.length > 0) {
const events = appsToAnnounce.map((app) => ({
type: APPLICATION_CREATED,
createdBy: app.createdBy || 'unknown',
data: app,
}));
await this.eventStore.batchStore(events);
}
}
}
clientKey(client: IClientApp): string {
return `${client.appName}_${client.instanceId}`;
}
async bulkAdd(): Promise<void> {
if (
this &&
this.seenClients &&
this.clientApplicationsStore &&
this.clientInstanceStore
) {
const uniqueRegistrations = Object.values(this.seenClients);
const uniqueApps = Object.values(
uniqueRegistrations.reduce((soFar, reg) => {
// eslint-disable-next-line no-param-reassign
soFar[reg.appName] = reg;
return soFar;
}, {}),
);
this.seenClients = {};
try {
if (uniqueRegistrations.length > 0) {
await this.clientApplicationsStore.bulkUpsert(uniqueApps);
await this.clientInstanceStore.bulkUpsert(
uniqueRegistrations,
);
}
} catch (err) {
this.logger.warn('Failed to register clients', err);
}
}
}
async getApplications(
query: IApplicationQuery,
): Promise<IClientApplication[]> {
return this.clientApplicationsStore.getAppsForStrategy(query);
}
async getApplication(appName: string): Promise<IApplication> {
const [seenToggles, application, instances, strategies, features] =
await Promise.all([
this.clientMetricsStoreV2.getSeenTogglesForApp(appName),
this.clientApplicationsStore.get(appName),
this.clientInstanceStore.getByAppName(appName),
this.strategyStore.getAll(),
this.featureToggleStore.getAll(),
]);
return {
appName: application.appName,
createdAt: application.createdAt,
description: application.description,
url: application.url,
color: application.color,
icon: application.icon,
strategies: application.strategies.map((name) => {
const found = strategies.find((f) => f.name === name);
return found || { name, notFound: true };
}),
instances,
seenToggles: seenToggles.map((name) => {
const found = features.find((f) => f.name === name);
return found || { name, notFound: true };
}),
links: {
self: `/api/applications/${application.appName}`,
},
};
}
async deleteApplication(appName: string): Promise<void> {
await this.clientInstanceStore.deleteForApplication(appName);
await this.clientApplicationsStore.delete(appName);
}
async createApplication(input: IApplication): Promise<void> {
const applicationData = await applicationSchema.validateAsync(input);
await this.clientApplicationsStore.upsert(applicationData);
}
destroy(): void {
this.timers.forEach(clearInterval);
}
}
|