-
Notifications
You must be signed in to change notification settings - Fork 12
/
index.js
262 lines (214 loc) · 6.92 KB
/
index.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
'use strict'
/* global server */
const redis = require('redis')
exports.register = function () {
this.load_redis_ini()
// another plugin has called us with: inherits('haraka-plugin-redis')
if (this.name !== 'redis') return
// register when 'redis' is declared in config/plugins
this.register_hook('init_master', 'init_redis_shared')
this.register_hook('init_child', 'init_redis_shared')
}
const defaultOpts = { socket: { host: '127.0.0.1', port: '6379' } }
const socketOpts = [
'host',
'port',
'path',
'tls',
'connectTimeout',
'noDelay',
'keepAlive',
'reconnectStrategy',
]
exports.load_redis_ini = function () {
const plugin = this
// store redis cfg at redisCfg, to avoid conflicting with plugins that
// inherit this plugin and have *their* config at plugin.cfg
plugin.redisCfg = plugin.config.get('redis.ini', () => {
plugin.load_redis_ini()
})
// backwards compat
if (plugin.redisCfg?.server?.ip && !plugin.redisCfg?.server?.host) {
plugin.redisCfg.server.host = plugin.redisCfg.server.ip
delete plugin.redisCfg.server.ip
}
if (plugin.redisCfg.db && !plugin.redisCfg.database) {
plugin.redisCfg.database = plugin.redisCfg.db
delete plugin.redisCfg.db
}
plugin.redisCfg.server =
{ ...defaultOpts, ...plugin.redisCfg.opts, ...plugin.redisCfg.server };
plugin.redisCfg.pubsub =
{ ...defaultOpts, ...plugin.redisCfg.opts, ...plugin.redisCfg.pubsub };
// socket options. In redis < 4, the options like host and port were
// top level, now they're in socket.*. Permit legacy configs to still work
for (const s of ['server', 'pubsub']) {
for (const o of socketOpts) {
if (plugin.redisCfg[s][o])
plugin.redisCfg[s].socket[o] = plugin.redisCfg[s][o]
delete plugin.redisCfg[s][o]
}
}
}
exports.merge_redis_ini = function () {
if (!this.cfg) this.cfg = {} // no <plugin>.ini loaded?
if (!this.cfg.redis) this.cfg.redis = {} // no [redis] in <plugin>.ini file
if (!this.redisCfg) this.load_redis_ini()
this.cfg.redis = Object.assign({}, this.redisCfg.server, this.cfg.redis)
// backwards compatibility
for (const o of socketOpts) {
if (this.cfg.redis[o] === undefined) continue
this.cfg.redis.socket[o] = this.cfg.redis[o]
delete this.cfg.redis[o]
}
if (this.cfg.redis.db && !this.cfg.redis.database) {
this.cfg.redis.database = this.cfg.redis.db
delete this.cfg.redis.db
}
}
exports.init_redis_shared = function (next, server) {
let calledNext = false
function nextOnce(e) {
if (e) this.logerror(`Redis error: ${e.message}`)
if (calledNext) return
calledNext = true
next()
}
// this is the server-wide redis, shared by plugins that don't
// specify a db ID.
if (!server.notes.redis) {
this.get_redis_client(this.redisCfg.server).then((client) => {
server.notes.redis = client
nextOnce()
})
return
}
server.notes.redis.ping((err) => {
if (err) return nextOnce(err)
this.loginfo('already connected')
nextOnce() // connection is good
})
}
exports.init_redis_plugin = function (next, server) {
const plugin = this
// this function is called by plugins at init_*, to establish their
// shared or unique redis db handle.
let calledNext = false
function nextOnce() {
if (calledNext) return
calledNext = true
next()
}
// for tests that do not load a shared config
if (!plugin.cfg) {
plugin.cfg = { redis: {} }
if (plugin.redisCfg)
plugin.cfg.redis = JSON.parse(JSON.stringify(plugin.redisCfg))
}
if (!server) server = { notes: {} }
const pidb = plugin.cfg.redis.database
if (server.notes.redis) {
// server-wide redis is available
// and the DB not specified or is the same as server-wide
if (pidb === undefined || pidb === plugin.redisCfg.db) {
server.loginfo(plugin, 'using server.notes.redis')
plugin.db = server.notes.redis
nextOnce()
return
}
}
plugin.get_redis_client(plugin.cfg.redis).then((client) => {
plugin.db = client
nextOnce()
})
}
exports.shutdown = function () {
if (this.db) this.db.quit()
if (server && server.notes && server.notes.redis) {
server.notes.redis.quit()
}
}
exports.redis_ping = async function () {
this.redis_pings = false
if (!this.db) throw new Error('redis not initialized')
const r = await this.db.ping()
if (r !== 'PONG') throw new Error('not PONG')
this.redis_pings = true
return true
}
function getUriStr(client, opts) {
let msg = `redis://${opts?.socket?.host}:${opts?.socket?.port}`
if (opts?.database) msg += `/${opts?.database}`
if (client?.server_info?.redis_version) {
msg += `\tv${client?.server_info?.redis_version}`
}
return msg
}
exports.get_redis_client = async function (opts) {
const client = redis.createClient(opts)
let urlStr
client
.on('error', (err) => {
this.logerror(err.message)
})
.on('end', () => {
this.loginfo(`Disconnected from ${urlStr}`)
})
try {
await client.connect()
if (opts?.database) client.dbid = opts?.database
client.server_info = await client.info()
urlStr = getUriStr(client, opts)
this.loginfo(`connected to ${urlStr}`)
return client
} catch (e) {
console.error(e)
this.logerror(e)
}
}
exports.get_redis_pub_channel = function (conn) {
return `result-${conn.transaction ? conn.transaction.uuid : conn.uuid}`
}
exports.get_redis_sub_channel = function (conn) {
return `result-${conn.uuid}*`
}
// formerly used by pi-watch
exports.redis_subscribe_pattern = async function (pattern, onMessage) {
if (this.redis) return // already subscribed?
this.redis = redis.createClient(this.redisCfg.pubsub)
this.redis.on('error', (err) => {
this.logerror(err.message)
})
await this.redis.connect()
await this.redis.pSubscribe(pattern, onMessage)
this.logdebug(this, `pSubscribed to ${pattern}`)
}
// the next two functions are use by pi-karma
exports.redis_subscribe = async function (connection, onMessage) {
if (connection.notes.redis) {
connection.logdebug(this, `redis already subscribed`)
return // another plugin has already called this.
}
const timer = setTimeout(() => {
connection.logerror('redis subscribe timed out')
}, 3 * 1000)
connection.notes.redis = redis.createClient(this.redisCfg.pubsub)
connection.notes.redis.on('error', (err) => {
this.logerror(err.message)
})
await connection.notes.redis.connect()
clearTimeout(timer)
const pattern = this.get_redis_sub_channel(connection)
connection.notes.redis.pSubscribe(pattern, onMessage)
connection.logdebug(this, `pSubscribed to ${pattern}`)
}
exports.redis_unsubscribe = async function (connection) {
if (!connection.notes.redis) {
connection.logerror(this, `redis_unsubscribe called when no redis`)
return
}
const pattern = this.get_redis_sub_channel(connection)
await connection.notes.redis.unsubscribe(pattern)
connection.logdebug(this, `unsubsubscribed from ${pattern}`)
connection.notes.redis.quit()
}