const donationWareFeatureError = new Error('donation-ware-feature')
donationWareFeatureError.code = 'donation-ware-feature'
const consolePrefix = 'socket.io connection-connect';
const Redis = require('../../../lib/ioredis-cluster')
const sharedIoRedis = require('../shared')
const staticCommands = 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const generateConnectInfo = async (options) => {
const {socket, redis, payload} = options
const { db} = payload
// console.warn('generateConnectInfo', options.payload)
let databases
//let results
let commands = staticCommands
const probeDatabaseCount = async() => {
let tryUntilSelectDatabaseIsNotOk = true
let currentDb = 0
let totalDb = 0
let maxDb = 512
while(tryUntilSelectDatabaseIsNotOk) {
try {
currentDb++
await redis.call('select', currentDb)
//console.info('found correct database index', currentDb)
if (currentDb > maxDb) {
console.warn(`limiting to max ${maxDb} database index, as it could crash with a big db index number`)
tryUntilSelectDatabaseIsNotOk = false
}
} catch(e) {
console.warn('found wrong current db index', currentDb)
tryUntilSelectDatabaseIsNotOk = false
}
}
totalDb = currentDb
if (db <= totalDb) {
await redis.call('select', db)
}
console.log('calculated max databases index', totalDb)
return totalDb
}
if (options.payload.connection.cluster === true) {
databases = 1
//commands = await redis.command()
} else {
try {
databases = (await redis.config('get', 'databases'))[1]
console.info(options.payload.connection.name, 'instance successfully works the database listing')
} catch(e) {
console.warn(options.payload.connection.name, 'instance get databases listing is disabled', e)
databases = await probeDatabaseCount()
}
}
console.info(options.payload.connection.name, 'databases got', databases)
try {
//commands = await redis.call('command2')
commands = await redis.command()
console.info(options.payload.connection.name, 'instance command listing is available', JSON.stringify(commands))
} catch(e) {
console.warn(options,payload.connection.name, 'instance command listing is not available, not all redis instances are not available command listing', e)
}
//console.log(JSON.stringify(commands))
//socket.p3xrs.commands = commands.map(e => e[0].toLowerCase())
//console.log('payload', payload)
await sharedIoRedis.getFullInfoAndSendSocket({
setDb: true,
redis: redis,
responseEvent: options.responseEvent,
socket: socket,
extend: {
databases: databases,
commands: commands
},
payload: payload,
})
}
module.exports = async (options) => {
const {socket, payload} = options;
const {connection, db} = payload
try {
if (!p3xrs.cfg.donated) {
if (payload.connection.cluster === true) {
throw donationWareFeatureError
}
}
if (socket.p3xrs.connectionId !== connection.id) {
sharedIoRedis.disconnectRedis({
socket: socket,
})
}
if (!p3xrs.redisConnections.hasOwnProperty(connection.id)) {
p3xrs.redisConnections[connection.id] = {
connection: connection,
clients: []
}
}
if (!p3xrs.redisConnections[connection.id].clients.includes(socket.id)) {
console.info(consolePrefix, 'added new socket.id', socket.id, 'to', connection.id, 'name with', connection.name)
p3xrs.redisConnections[connection.id].clients.push(socket.id)
}
if (socket.p3xrs.ioredis !== undefined) {
console.info(consolePrefix, 'redis was already connected')
socket.p3xrs.connectionId = connection.id
await generateConnectInfo({
redis: socket.p3xrs.ioredis,
socket: socket,
responseEvent: options.responseEvent,
payload: payload
})
sharedIoRedis.sendStatus({
socket: socket,
})
} else {
const actualConnection = p3xrs.connections.list.find(con => options.payload.connection.id === con.id)
if (actualConnection === undefined) {
throw new Error('auto-connection-failed')
}
if (connection.askAuth) {
actualConnection.username = undefined
actualConnection.password = undefined
if (connection.username) {
actualConnection.username = connection.username
}
if (connection.password) {
actualConnection.password = connection.password
}
}
let redisConfig = Object.assign({}, actualConnection);
delete redisConfig.name
delete redisConfig.id
redisConfig.retryStrategy = () => {
return false
}
/*
redisConfig.showFriendlyErrorStack = true
if (db !== undefined) {
redisConfig.db = db
}
*/
if (redisConfig.cluster === true) {
redisConfig = [redisConfig].concat(actualConnection.nodes)
}
if (redisConfig.tlsWithoutCert) {
redisConfig.tls = {
}
} else if (typeof redisConfig.tlsCa === 'string' && redisConfig.tlsCa.trim() !== '') {
redisConfig.tls = {
//rejectUnauthorized: false,
cert: redisConfig.tlsCrt,
key: redisConfig.tlsKey,
ca: redisConfig.tlsCa,
}
}
if ((typeof redisConfig.tlsCa === 'string' && redisConfig.tlsCa.trim() !== '') || redisConfig.tlsWithoutCert) {
redisConfig.tls.rejectUnauthorized = redisConfig.tlsRejectUnauthorized === undefined ? false : redisConfig.tlsRejectUnauthorized
}
let redis = new Redis(redisConfig)
//console.warn('redis connection', redisConfig)
let redisSubscriber = new Redis(redisConfig)
// let redis = await new Redis(redisConfig, {autoDetectCluster: true})
// let redisSubscriber = await new Redis(redisConfig, {autoDetectCluster: true})
socket.p3xrs.connectionId = connection.id
socket.p3xrs.readonly = actualConnection.readonly === true
socket.p3xrs.ioredis = redis
socket.p3xrs.ioredisSubscriber = redisSubscriber
let didConnected = false
const redisErrorFun = async function (error) {
const consolePrefix = 'socket.io connection-connect redis error fun'
console.warn(consolePrefix, connection.id, connection.name, 'error')
console.error(error)
console.warn(consolePrefix, 'didConnected', didConnected)
if (!didConnected) {
socket.emit(options.responseEvent, {
status: 'error',
error: error.message
})
}
const disconnectedData = {
connectionId: socket.p3xrs.connectionId,
error: error.message,
status: 'error',
}
console.warn(consolePrefix, 'disconnectedData', disconnectedData)
socket.p3xrs.io.emit('redis-disconnected', disconnectedData)
try {
await sharedIoRedis.disconnectRedis({
socket: socket,
})
} catch (e) {
console.warn(consolePrefix, 'disconnectRedis')
console.error(e)
}
delete p3xrs.redisConnections[socket.connectionId]
socket.p3xrs.connectionId = undefined
socket.p3xrs.ioredis = undefined
socket.p3xrs.ioredisSubscriber = undefined
sharedIoRedis.sendStatus({
socket: socket,
})
}
redis.on('error', redisErrorFun)
redisSubscriber.on('error', redisErrorFun)
//console.warn('create psubscribe', actualConnection.id)
redisSubscriber.psubscribe('*', function (error, count) {
if (error) {
console.error(error)
}
})
//console.warn('create pmessage', actualConnection.id)
redisSubscriber.on('pmessage', function (channel, pattern, message) {
//console.log(`receive pmessage channel: ${channel} - pattern: ${pattern}, message: ${message}`);
//console.log('list clients', actualConnection.id, JSON.stringify(p3xrs.redisConnections[actualConnection.id].clients, null, 4))
socket.emit('pubsub-message', {
channel: pattern,
message: message,
})
});
redis.on('connect', async function () {
try {
console.info(consolePrefix, options.payload.connection.id, options.payload.connection.name, 'connected')
didConnected = true
await generateConnectInfo({
redis: redis,
socket: socket,
responseEvent: options.responseEvent,
payload: options.payload,
})
} catch (e) {
console.error(e)
socket.emit(options.responseEvent, {
status: 'error',
error: e.message,
})
} finally {
sharedIoRedis.sendStatus({
socket: socket,
})
}
})
}
} catch (e) {
console.error(e)
socket.emit(options.responseEvent, {
status: 'error',
error: e.message
})
}
}