feat: 使用 PubSub 进行消息广播。

This commit is contained in:
Ivan
2021-04-04 00:36:58 +08:00
parent bb3efd3714
commit b4307f05d6
17 changed files with 94 additions and 68 deletions

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@ -1,5 +1,5 @@
import { ArgumentMetadata, Injectable, PipeTransform } from '@nestjs/common';
import { sanitize } from '@neuralegion/class-sanitizer/dist';
import { plainToClass } from 'class-transformer';
@Injectable()
export class SanitizePipe implements PipeTransform {
@ -12,13 +12,11 @@ export class SanitizePipe implements PipeTransform {
return value;
}
const constructorFunction = metadata.metatype;
if (!constructorFunction) {
if (!constructorFunction || value instanceof constructorFunction) {
return value;
}
value = Object.assign(new constructorFunction(), value);
try {
sanitize(value);
return value;
return plainToClass(constructorFunction, value);
} catch (err) {
console.error(err);
throw err;

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@ -0,0 +1,5 @@
import { Inject } from '@nestjs/common';
import { getPubSubToken } from '../utils/token';
export const InjectPubSub = (name?: string): ParameterDecorator =>
Inject(getPubSubToken(name));

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@ -1,5 +1,5 @@
import { ModuleMetadata } from '@nestjs/common';
import { PubSubOptions } from 'graphql-subscriptions';
import { PubSubOptions } from './pub-sub-options.interface';
export interface PubSubAsyncConfig extends Pick<ModuleMetadata, 'imports'> {
name?: string;

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@ -1,6 +1,6 @@
import { RedisOptions } from 'ioredis';
export interface PubSubOptions {
name: string;
name?: string;
redis: RedisOptions;
}

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@ -1,2 +1 @@
export const DEFAULT_PUB_SUB_NAME = 'default';
export const PUB_SUB_CONFIG_TOKEN = 'pub_sub_config_token';

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@ -1,47 +1,48 @@
import { DynamicModule, Module, Provider } from '@nestjs/common';
import { DynamicModule, Module } from '@nestjs/common';
import { PubSubService } from './pub-sub.service';
import {
createOptionsProvider,
createAsyncPubSubProviders,
createPubSubProvider,
} from './pub-sub.providers';
import { PubSubOptions } from './interfaces/pub-sub-options.interface';
import { PubSubAsyncConfig } from './interfaces/pub-sub-async-config.interface';
import { getPubSubToken } from './utils/token';
import { PUB_SUB_CONFIG_TOKEN } from './pub-sub.constants';
import { getPubSubConfigToken } from './utils/token';
@Module({
providers: [PubSubService],
})
export class PubSubModule {
public static forRoot(options: PubSubOptions): DynamicModule {
const providers = [createPubSubProvider(options)];
return {
global: true,
module: PubSubModule,
providers,
exports: providers,
};
}
public static forRootAsync(config: PubSubAsyncConfig) {
const providers: Provider[] = [
createOptionsProvider(config),
const providers = [
{
provide: getPubSubToken(config.name),
inject: [PUB_SUB_CONFIG_TOKEN],
useFactory: (options: PubSubOptions) => {
return createPubSubProvider({
name: config.name,
...options,
});
},
provide: getPubSubConfigToken(options.name),
useValue: options,
},
createPubSubProvider(options.name),
];
return {
global: true,
module: PubSubModule,
imports: config.imports,
providers,
exports: providers,
};
}
public static forRootAsync(...configs: PubSubAsyncConfig[]): DynamicModule {
const providers = createAsyncPubSubProviders(configs);
return {
global: true,
module: PubSubModule,
imports: configs
.map((config) => config.imports)
.flat()
.filter((o, i, a) => a.indexOf(o) === i),
providers,
exports: providers,
};
}
public static forFeature(): DynamicModule {
return {
module: PubSubModule,
};
}
}

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@ -2,22 +2,30 @@ import { Provider } from '@nestjs/common';
import { PubSubAsyncConfig } from './interfaces/pub-sub-async-config.interface';
import { PubSubOptions } from './interfaces/pub-sub-options.interface';
import { PubSub } from './pub-sub';
import { PUB_SUB_CONFIG_TOKEN } from './pub-sub.constants';
import { getPubSubToken } from './utils/token';
import { getPubSubConfigToken, getPubSubToken } from './utils/token';
export function createPubSubProvider(options: PubSubOptions): Provider {
export function createPubSubProvider(name: string): Provider {
return {
provide: getPubSubToken(options.name),
useFactory: () => {
return new PubSub(options);
},
provide: getPubSubToken(name),
useFactory: (option: PubSubOptions) => new PubSub(option),
inject: [getPubSubConfigToken(name)],
};
}
export function createOptionsProvider(config: PubSubAsyncConfig): Provider {
return {
provide: PUB_SUB_CONFIG_TOKEN,
provide: getPubSubConfigToken(config.name),
useFactory: config.useFactory,
inject: config.inject || [],
};
}
export function createAsyncPubSubProviders(
configs: PubSubAsyncConfig[],
): Provider[] {
return configs
.map((config) => [
createOptionsProvider(config),
createPubSubProvider(config.name),
])
.flat();
}

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@ -10,7 +10,7 @@ import {
PubSubRawNextMessage,
} from './interfaces/pub-sub-raw-message.interface';
const log = debug('app:pubsub:instance');
const log = debug('fennec:pubsub:instance');
export class PubSub extends EventEmitter {
pubRedis: Redis;
pSubRedis: Redis;

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@ -3,3 +3,6 @@ import { DEFAULT_PUB_SUB_NAME } from '../pub-sub.constants';
export function getPubSubToken(name) {
return `app:pub-usb:${name || DEFAULT_PUB_SUB_NAME}`;
}
export function getPubSubConfigToken(name) {
return `app:pub-usb:config:${name || DEFAULT_PUB_SUB_NAME}`;
}