/
main.js
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/
main.js
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import path from 'path'
import glob from 'glob'
import Mali from 'mali'
import Redis from 'ioredis'
import { map } from 'lodash'
import { service } from 'grpc-health-check'
import Db from './db'
import logger from './logger'
import CacheService from './services/cache.service'
import CacheMiddleware from './middlewares/cache.middleware'
import HealthCheckService from './services/health-check.service'
import PostRepository from './repositories/post.repository'
const MODEL_NAME = 'post'
const SERVICE_NAME = 'PostService'
const SERVICE_PROTO = path.resolve(__dirname, '_proto/post.proto')
const HOST_PORT = `${process.env.HOST}:${process.env.PORT}`
const main = async () => {
const modelPaths = glob.sync(path.resolve(__dirname, '../**/*.model.js'))
const db = await Db.init(modelPaths, logger)
const repo = new PostRepository(SERVICE_NAME, db.model(MODEL_NAME), logger)
const redisHostConfig = `${process.env.REDIS_HOST || ''}`.split(',')
let cache
let redisOptions = {}
if (redisHostConfig.length > 1) {
const redisNodes = map(redisHostConfig, host => {
return {
host,
port: process.env.REDIS_PORT
}
})
redisOptions = {
password: process.env.REDIS_PASSWORD
}
cache = new Redis.Cluster(redisNodes, {
slotsRefreshTimeout: 20000,
redisOptions
})
} else {
redisOptions = {
host: process.env.REDIS_HOST,
port: process.env.REDIS_PORT,
password: process.env.REDIS_PASSWORD
}
cache = new Redis(redisOptions)
}
const cacheService = new CacheService(cache, logger)
const cacheMiddleware = new CacheMiddleware(cacheService, logger)
const PostService = {
findAll: [cacheMiddleware.find('posts'), repo.findAll.bind(repo)],
findOne: [cacheMiddleware.read('posts'), repo.findOne.bind(repo)],
count: repo.count.bind(repo),
create: [cacheMiddleware.write('posts'), repo.create.bind(repo)],
update: [cacheMiddleware.write('posts'), repo.update.bind(repo)],
destroy: [cacheMiddleware.remove('posts'), repo.destroy.bind(repo)]
}
const app = new Mali()
const healthCheckService = new HealthCheckService(SERVICE_NAME)
const healthCheckImpl = await healthCheckService.getServiceImpl()
app.addService(SERVICE_PROTO, null, {
enums: String,
objects: true,
arrays: true
})
app.addService(service)
app.use({
PostService,
...healthCheckImpl
})
await app.start(HOST_PORT)
logger.info(`gRPC Server is now listening on port ${process.env.PORT}`)
return {
app,
cache,
db
}
}
export default main