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4195cd2b | 1 | import * as express from 'express' |
ecb4e35f C |
2 | import { createClient, RedisClient } from 'redis' |
3 | import { logger } from '../helpers/logger' | |
4 | import { generateRandomString } from '../helpers/utils' | |
4195cd2b C |
5 | import { CONFIG, FEEDS, USER_PASSWORD_RESET_LIFETIME, VIDEO_VIEW_LIFETIME } from '../initializers' |
6 | ||
7 | type CachedRoute = { | |
8 | body: string, | |
9 | contentType?: string | |
10 | statusCode?: string | |
11 | } | |
ecb4e35f C |
12 | |
13 | class Redis { | |
14 | ||
15 | private static instance: Redis | |
16 | private initialized = false | |
17 | private client: RedisClient | |
18 | private prefix: string | |
19 | ||
20 | private constructor () {} | |
21 | ||
22 | init () { | |
23 | // Already initialized | |
24 | if (this.initialized === true) return | |
25 | this.initialized = true | |
26 | ||
27 | this.client = createClient({ | |
28 | host: CONFIG.REDIS.HOSTNAME, | |
29 | port: CONFIG.REDIS.PORT | |
30 | }) | |
31 | ||
32 | this.client.on('error', err => { | |
d5b7d911 | 33 | logger.error('Error in Redis client.', { err }) |
ecb4e35f C |
34 | process.exit(-1) |
35 | }) | |
36 | ||
37 | if (CONFIG.REDIS.AUTH) { | |
38 | this.client.auth(CONFIG.REDIS.AUTH) | |
39 | } | |
40 | ||
41 | this.prefix = 'redis-' + CONFIG.WEBSERVER.HOST + '-' | |
42 | } | |
43 | ||
44 | async setResetPasswordVerificationString (userId: number) { | |
45 | const generatedString = await generateRandomString(32) | |
46 | ||
47 | await this.setValue(this.generateResetPasswordKey(userId), generatedString, USER_PASSWORD_RESET_LIFETIME) | |
48 | ||
49 | return generatedString | |
50 | } | |
51 | ||
52 | async getResetPasswordLink (userId: number) { | |
53 | return this.getValue(this.generateResetPasswordKey(userId)) | |
54 | } | |
55 | ||
b5c0e955 C |
56 | setView (ip: string, videoUUID: string) { |
57 | return this.setValue(this.buildViewKey(ip, videoUUID), '1', VIDEO_VIEW_LIFETIME) | |
58 | } | |
59 | ||
60 | async isViewExists (ip: string, videoUUID: string) { | |
61 | return this.exists(this.buildViewKey(ip, videoUUID)) | |
62 | } | |
63 | ||
4195cd2b C |
64 | async getCachedRoute (req: express.Request) { |
65 | const cached = await this.getObject(this.buildCachedRouteKey(req)) | |
66 | ||
67 | return cached as CachedRoute | |
68 | } | |
69 | ||
70 | setCachedRoute (req: express.Request, body: any, contentType?: string, statusCode?: number) { | |
71 | const cached: CachedRoute = { | |
72 | body: body.toString(), | |
73 | contentType, | |
74 | statusCode: statusCode.toString() | |
75 | } | |
76 | ||
77 | return this.setObject(this.buildCachedRouteKey(req), cached, FEEDS.CACHE_LIFETIME) | |
78 | } | |
79 | ||
2c29ad4f C |
80 | listJobs (jobsPrefix: string, state: string, mode: 'alpha', order: 'ASC' | 'DESC', offset: number, count: number) { |
81 | return new Promise<string[]>((res, rej) => { | |
82 | this.client.sort(jobsPrefix + ':jobs:' + state, 'by', mode, order, 'LIMIT', offset.toString(), count.toString(), (err, values) => { | |
83 | if (err) return rej(err) | |
84 | ||
2c29ad4f C |
85 | return res(values) |
86 | }) | |
87 | }) | |
88 | } | |
89 | ||
ecb4e35f C |
90 | private getValue (key: string) { |
91 | return new Promise<string>((res, rej) => { | |
92 | this.client.get(this.prefix + key, (err, value) => { | |
93 | if (err) return rej(err) | |
94 | ||
95 | return res(value) | |
96 | }) | |
97 | }) | |
98 | } | |
99 | ||
100 | private setValue (key: string, value: string, expirationMilliseconds: number) { | |
101 | return new Promise<void>((res, rej) => { | |
102 | this.client.set(this.prefix + key, value, 'PX', expirationMilliseconds, (err, ok) => { | |
103 | if (err) return rej(err) | |
104 | ||
4195cd2b | 105 | if (ok !== 'OK') return rej(new Error('Redis set result is not OK.')) |
ecb4e35f C |
106 | |
107 | return res() | |
108 | }) | |
109 | }) | |
110 | } | |
111 | ||
4195cd2b C |
112 | private setObject (key: string, obj: { [ id: string ]: string }, expirationMilliseconds: number) { |
113 | return new Promise<void>((res, rej) => { | |
114 | this.client.hmset(this.prefix + key, obj, (err, ok) => { | |
115 | if (err) return rej(err) | |
116 | if (!ok) return rej(new Error('Redis mset result is not OK.')) | |
117 | ||
118 | this.client.pexpire(this.prefix + key, expirationMilliseconds, (err, ok) => { | |
119 | if (err) return rej(err) | |
120 | if (!ok) return rej(new Error('Redis expiration result is not OK.')) | |
121 | ||
122 | return res() | |
123 | }) | |
124 | }) | |
125 | }) | |
126 | } | |
127 | ||
128 | private getObject (key: string) { | |
129 | return new Promise<{ [ id: string ]: string }>((res, rej) => { | |
130 | this.client.hgetall(this.prefix + key, (err, value) => { | |
131 | if (err) return rej(err) | |
132 | ||
133 | return res(value) | |
134 | }) | |
135 | }) | |
136 | } | |
137 | ||
b5c0e955 C |
138 | private exists (key: string) { |
139 | return new Promise<boolean>((res, rej) => { | |
140 | this.client.exists(this.prefix + key, (err, existsNumber) => { | |
141 | if (err) return rej(err) | |
142 | ||
143 | return res(existsNumber === 1) | |
144 | }) | |
145 | }) | |
146 | } | |
147 | ||
ecb4e35f C |
148 | private generateResetPasswordKey (userId: number) { |
149 | return 'reset-password-' + userId | |
150 | } | |
151 | ||
b5c0e955 C |
152 | private buildViewKey (ip: string, videoUUID: string) { |
153 | return videoUUID + '-' + ip | |
154 | } | |
155 | ||
4195cd2b C |
156 | private buildCachedRouteKey (req: express.Request) { |
157 | return req.method + '-' + req.originalUrl | |
158 | } | |
159 | ||
ecb4e35f C |
160 | static get Instance () { |
161 | return this.instance || (this.instance = new this()) | |
162 | } | |
163 | } | |
164 | ||
165 | // --------------------------------------------------------------------------- | |
166 | ||
167 | export { | |
168 | Redis | |
169 | } |