Created
May 14, 2019 05:41
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Simple redis adapter for node.js written in TypeScript with pinging and all that jazz...
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import * as _ from 'lodash' | |
import * as IORedis from 'ioredis' | |
import * as pkgup from 'read-pkg-up' | |
import * as schedule from 'node-schedule' | |
export namespace Redis { | |
export type Coms = string[][] | |
export interface Event<T = any> { | |
data: T | |
name: string | |
} | |
} | |
export class Redis extends IORedis { | |
private static opts(opts: IORedis.RedisOptions) { | |
let pkgname = pkgup.sync({ cwd: __dirname }).pkg.name | |
_.defaults(opts, { | |
connectionName: _.trim(`${process.DEVELOPMENT && '[DEV]'} ${pkgname} ${opts.name}`), | |
db: 0, | |
host: process.env.REDIS_HOST || '127.0.0.1', | |
password: process.env.REDIS_PASSWORD, | |
port: _.parseInt(process.env.REDIS_PORT) || 6379, | |
} as IORedis.RedisOptions) | |
// if (!process.DEVELOPMENT) { | |
// opts.path = '/var/run/redis_' + opts.port + '.sock' | |
// _.unset(opts, 'host') | |
// _.unset(opts, 'port') | |
// } | |
return opts | |
} | |
constructor(opts: IORedis.RedisOptions) { | |
super(Redis.opts(opts)) | |
} | |
async purge(rkey: string, pattern = ':*') { | |
let keys = await this.keys(rkey + pattern) | |
console.warn('PURGE ->', rkey + pattern, '->', keys.length) | |
await this.coms(keys.map(v => ['del', v])) | |
return keys | |
} | |
async coms(coms = [] as Redis.Coms) { | |
let results = ((await this.pipeline(coms).exec()) || []) as any[] | |
for (let i = 0; i < results.length; i++) { | |
if (results[i][0]) { | |
throw new Error(`coms[${i}] ${coms[i]} results[${i}] ${results[i][0]}`) | |
} | |
results[i] = results[i][1] | |
} | |
return results | |
} | |
fixHMget(hmget: any[], keys: string[]) { | |
return hmget.reduce((target, value, index) => { | |
target[keys[index]] = value | |
return target | |
}, {}) | |
} | |
toHset(from: any) { | |
return Object.entries(from).reduce((target, [key, value]) => { | |
target[key] = JSON.stringify(value) | |
return target | |
}, {}) | |
} | |
fromHget(to: any) { | |
for (let key in to) { | |
to[key] = JSON.parse(to[key]) | |
} | |
return to | |
} | |
} | |
export const redis = new Redis({ name: 'redis' }) | |
export default redis | |
setTimeout(() => schedule.scheduleJob('*/5 * * * * *', () => redis.ping()), 1000) |
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