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unleash.module.ts
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import {
DynamicModule,
Inject,
Logger,
Module,
OnModuleInit,
} from '@nestjs/common'
import { ModuleRef } from '@nestjs/core'
import { ScheduleModule } from '@nestjs/schedule'
import {
UnleashContext,
UnleashModuleAsyncOptions,
UnleashModuleOptions,
} from '.'
import { UnleashClientModule, UnleashRegisterClient } from '../unleash-client'
import {
UnleashStrategiesModule,
UnleashStrategiesModuleOptions,
UnleashStrategiesService,
} from '../unleash-strategies'
import { MetricsService } from './metrics.service'
import { MetricsRepository } from './repository/metrics-repository'
import { ToggleRepository } from './repository/toggle-repository'
import {
METRICS_INTERVAL,
REFRESH_INTERVAL,
UNLEASH_MODULE_OPTIONS,
} from './unleash.constants'
import { UnleashService } from './unleash.service'
import { MetricsUpdaterService } from './updaters/metrics-updater.service'
import { TogglesUpdaterService } from './updaters/toggles-updater.service'
const DEFAULT_TIMEOUT = 1000
const DEFAULT_INTERVAL = 15_000
@Module({
imports: [ScheduleModule.forRoot()],
providers: [
MetricsRepository,
MetricsService,
MetricsUpdaterService,
ToggleRepository,
TogglesUpdaterService,
UnleashContext,
UnleashService,
],
exports: [UnleashService, UnleashStrategiesModule, ToggleRepository],
})
export class UnleashModule implements OnModuleInit {
private readonly logger = new Logger(UnleashModule.name)
constructor(
private readonly togglesUpdater: TogglesUpdaterService,
private readonly metricsUpdater: MetricsUpdaterService,
private readonly registerClient: UnleashRegisterClient,
@Inject(METRICS_INTERVAL) private readonly metricsInterval: number,
private readonly strategies: UnleashStrategiesService,
@Inject(UNLEASH_MODULE_OPTIONS)
private readonly options: UnleashModuleOptions,
) {}
async onModuleInit(): Promise<void> {
await this.togglesUpdater.start()
if (!(this.options.disableRegistration ?? true)) {
try {
await this.registerClient.register(
this.metricsInterval,
this.strategies.findAll().map((strategy) => strategy.name),
)
await this.metricsUpdater.start()
} catch (error) {
this.logger.error(error)
}
}
}
static forRoot(options: UnleashModuleOptions): DynamicModule {
const strategiesModule = UnleashStrategiesModule.registerAsync({
useFactory: (
options: UnleashModuleOptions,
): UnleashStrategiesModuleOptions => ({
strategies: options.strategies ?? [],
}),
inject: [UNLEASH_MODULE_OPTIONS],
})
const clientModule = UnleashClientModule.registerAsync({
useFactory: (options: UnleashModuleOptions) => ({
baseURL: options.url,
appName: options.appName,
instanceId: options.instanceId,
timeout: options.http?.timeout || DEFAULT_TIMEOUT,
http: options.http,
}),
inject: [UNLEASH_MODULE_OPTIONS],
})
return {
global: options?.global ?? true,
module: UnleashModule,
imports: [strategiesModule, clientModule],
exports: [
clientModule,
strategiesModule,
UNLEASH_MODULE_OPTIONS,
ToggleRepository,
],
providers: [
{
provide: UNLEASH_MODULE_OPTIONS,
useValue: options,
},
{
provide: REFRESH_INTERVAL,
useValue: options.refreshInterval ?? DEFAULT_INTERVAL,
},
{
provide: METRICS_INTERVAL,
useValue: options.metricsInterval ?? DEFAULT_INTERVAL,
},
],
}
}
static forRootAsync(options: UnleashModuleAsyncOptions): DynamicModule {
const strategiesModule = UnleashStrategiesModule.registerAsync({
// extraProviders: options.strategies,
useFactory: (
options: UnleashModuleOptions,
): UnleashStrategiesModuleOptions => ({
strategies: options.strategies ?? [],
}),
inject: [UNLEASH_MODULE_OPTIONS, ModuleRef],
})
const clientModule = UnleashClientModule.registerAsync({
// eslint-disable-next-line sonarjs/no-identical-functions
useFactory: (options: UnleashModuleOptions) => ({
baseURL: options.url,
appName: options.appName,
instanceId: options.instanceId,
timeout: options.http?.timeout || DEFAULT_TIMEOUT,
http: options.http,
}),
inject: [UNLEASH_MODULE_OPTIONS],
})
return {
global: options?.global ?? true,
module: UnleashModule,
imports: [strategiesModule, clientModule],
exports: [
clientModule,
strategiesModule,
UNLEASH_MODULE_OPTIONS,
ToggleRepository,
],
providers: [
{
provide: UNLEASH_MODULE_OPTIONS,
useFactory: options.useFactory!,
inject: options.inject,
},
{
provide: REFRESH_INTERVAL,
useFactory: (options: UnleashModuleOptions) =>
options.refreshInterval ?? DEFAULT_INTERVAL,
inject: [UNLEASH_MODULE_OPTIONS],
},
{
provide: METRICS_INTERVAL,
useFactory: (options: UnleashModuleOptions) =>
options.metricsInterval ?? DEFAULT_INTERVAL,
inject: [UNLEASH_MODULE_OPTIONS],
},
],
}
}
}