我正在尝试使用 Bull/Redis 实现 Nodemailer 来处理 NestJS 中的电子邮件类型的任务。
我有一个名为 EmailService
的共享模块将作业添加到我的队列中,为此,它需要注入(inject) Queue
来自 'bull'
.
Nest can't resolve dependencies of the EmailService (?). Please make sure that the argument BullQueue_mailqueue at index [0] is available in the SharedModule context.
我的结构
├── src
| ├── app.module.ts
| ├── config
| | └── nodemailer
| | ├── nodemailer.module.ts
| | ├── nodemailer.service.ts
| └── modules
| ├── modules that imports the SharedModule to send emails.
| └── shared
| ├── processors
| | └── email.processor.ts
| ├── services
| | └── email
| ├── shared.module.ts
应用模块@Module({
imports: [
NodemailerModule,
// Al other modules (functionalities of my application that imports the SharedModule)
],
})
export class AppModule {}
nodemailer.module@Module({
imports: [
MailerModule.forRootAsync({
useClass: NodemailerService,
}),
BullModule.registerQueueAsync({
useClass: NodemailerService,
}),
],
exports: [NodemailerService, BullModule], // <- Exports BullModule
providers: [NodemailerService],
})
export class NodemailerModule {}
节点邮件服务@Injectable()
export class NodemailerService implements BullOptionsFactory {
constructor() {}
createBullOptions(): Promise<BullModuleOptions> | BullModuleOptions {
return {
name: 'myqueue',
redis: {
host: 'localhost',
port: 6379,
},
};
}
}
现在这是我的 EmailService,它是 SharedModule 的一部分。import { Injectable } from '@nestjs/common';
import { InjectQueue } from '@nestjs/bull';
import { Queue } from 'bull';
@Injectable()
export class EmailService {
constructor(
@InjectQueue('myqueue')
private readonly mailQueue: Queue,
) {}
}
共享模块@Module({
imports: [NodemailerModule], // < imports this because it has the Bull configuration as we saw above
exports: [EmailService],
providers: [EmailService, EmailProcessor],
})
export class SharedModule {}
我试图按照以下步骤操作:我不明白为什么我的
EmailService
无法注入(inject) BullQueue 依赖项。我在这里缺少什么?
最佳答案
注入(inject)队列的模块需要导入队列注册。 IE。folder/some.module.ts
@Module({
imports: [
BullModule.registerQueue({
name: 'some-queue',
}),
],
providers: [SomeService],
})
export class SomeModule {}
然后在 SomeService
folder/some.service.ts
constructor(
@InjectQueue('some-queue') private someQueue: Queue,
) {}
关于nestjs - 尝试在 NestJS 中注入(inject) Bull Queue 时无法解决依赖关系,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/66494091/