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server.js
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'use strict';
if (!process.env.EE_ENV_LOADED) {
require('dotenv').config(); // eslint-disable-line global-require
process.env.EE_ENV_LOADED = 'true';
}
try {
process.chdir(__dirname);
} catch (err) {
// ignore
}
process.title = 'emailengine';
const os = require('os');
process.env.UV_THREADPOOL_SIZE =
process.env.UV_THREADPOOL_SIZE && !isNaN(process.env.UV_THREADPOOL_SIZE) ? Number(process.env.UV_THREADPOOL_SIZE) : Math.max(os.cpus().length, 4);
// cache before wild-config
const argv = process.argv.slice(2);
const { Worker, SHARE_ENV } = require('worker_threads');
const packageData = require('./package.json');
const config = require('wild-config');
const logger = require('./lib/logger');
const { readEnvValue, hasEnvValue } = require('./lib/tools');
const { webhooks: Webhooks } = require('./lib/webhooks');
const nodeFetch = require('node-fetch');
const fetchCmd = global.fetch || nodeFetch;
const Bugsnag = require('@bugsnag/js');
if (readEnvValue('BUGSNAG_API_KEY')) {
Bugsnag.start({
apiKey: readEnvValue('BUGSNAG_API_KEY'),
appVersion: packageData.version,
logger: {
debug(...args) {
logger.debug({ msg: args.shift(), worker: 'main', source: 'bugsnag', args: args.length ? args : undefined });
},
info(...args) {
logger.debug({ msg: args.shift(), worker: 'main', source: 'bugsnag', args: args.length ? args : undefined });
},
warn(...args) {
logger.warn({ msg: args.shift(), worker: 'main', source: 'bugsnag', args: args.length ? args : undefined });
},
error(...args) {
logger.error({ msg: args.shift(), worker: 'main', source: 'bugsnag', args: args.length ? args : undefined });
}
}
});
logger.notifyError = Bugsnag.notify.bind(Bugsnag);
}
const pathlib = require('path');
const { redis, queueConf } = require('./lib/db');
const promClient = require('prom-client');
const fs = require('fs').promises;
const crypto = require('crypto');
const { compare: cv } = require('compare-versions');
const Joi = require('joi');
const { settingsSchema } = require('./lib/schemas');
const settings = require('./lib/settings');
const tokens = require('./lib/tokens');
const { checkRateLimit } = require('./lib/rate-limit');
const { QueueEvents } = require('bullmq');
const getSecret = require('./lib/get-secret');
const {
getDuration,
getByteSize,
getBoolean,
getWorkerCount,
selectRendezvousNode,
checkLicense,
checkForUpgrade,
setLicense,
getRedisStats
} = require('./lib/tools');
const {
MAX_DAYS_STATS,
MESSAGE_NEW_NOTIFY,
MESSAGE_DELETED_NOTIFY,
CONNECT_ERROR_NOTIFY,
REDIS_PREFIX,
ACCOUNT_ADDED_NOTIFY,
ACCOUNT_DELETED_NOTIFY,
LIST_UNSUBSCRIBE_NOTIFY,
LIST_SUBSCRIBE_NOTIFY
} = require('./lib/consts');
const msgpack = require('msgpack5')();
config.service = config.service || {};
config.workers = config.workers || {
imap: 4,
webhooks: 1,
submit: 1,
imapProxy: 1
};
config.dbs = config.dbs || {
redis: 'redis://127.0.0.1:6379/8'
};
config.log = config.log || {
level: 'trace'
};
config.api = config.api || {
port: 3000,
host: '127.0.0.1'
};
config.smtp = config.smtp || {
enabled: false,
port: 2525,
host: '127.0.0.1',
secret: '',
proxy: false
};
config['imap-proxy'] = config['imap-proxy'] || {
enabled: false,
port: 2993,
host: '127.0.0.1',
secret: '',
proxy: false
};
const DEFAULT_EENGINE_TIMEOUT = 10 * 1000;
const EENGINE_TIMEOUT = getDuration(readEnvValue('EENGINE_TIMEOUT') || config.service.commandTimeout) || DEFAULT_EENGINE_TIMEOUT;
const DEFAULT_MAX_ATTACHMENT_SIZE = 5 * 1024 * 1024;
const SUBSCRIPTION_CHECK_TIMEOUT = 1 * 24 * 60 * 60 * 1000;
const SUBSCRIPTION_ALLOW_DELAY = 28 * 24 * 60 * 60 * 1000;
const CONNECION_SETUP_DELAY = getDuration(readEnvValue('EENGINE_CONNECION_SETUP_DELAY') || config.service.setupDelay) || 0;
config.api.maxSize = getByteSize(readEnvValue('EENGINE_MAX_SIZE') || config.api.maxSize) || DEFAULT_MAX_ATTACHMENT_SIZE;
config.dbs.redis = readEnvValue('EENGINE_REDIS') || readEnvValue('REDIS_URL') || config.dbs.redis;
config.workers.imap = getWorkerCount(readEnvValue('EENGINE_WORKERS') || config.workers.imap) || 4;
config.workers.webhooks = Number(readEnvValue('EENGINE_WORKERS_WEBHOOKS')) || config.workers.webhooks || 1;
config.workers.submit = Number(readEnvValue('EENGINE_WORKERS_SUBMIT')) || config.workers.submit || 1;
config.api.port =
(readEnvValue('EENGINE_PORT') && Number(readEnvValue('EENGINE_PORT'))) || (readEnvValue('PORT') && Number(readEnvValue('PORT'))) || config.api.port;
config.api.host = readEnvValue('EENGINE_HOST') || config.api.host;
config.log.level = readEnvValue('EENGINE_LOG_LEVEL') || config.log.level;
// legacy options, will be removed in the future
const SMTP_ENABLED = hasEnvValue('EENGINE_SMTP_ENABLED') ? getBoolean(readEnvValue('EENGINE_SMTP_ENABLED')) : getBoolean(config.smtp.enabled);
const SMTP_SECRET = readEnvValue('EENGINE_SMTP_SECRET') || config.smtp.secret;
const SMTP_PORT = (readEnvValue('EENGINE_SMTP_PORT') && Number(readEnvValue('EENGINE_SMTP_PORT'))) || Number(config.smtp.port) || 2525;
const SMTP_HOST = readEnvValue('EENGINE_SMTP_HOST') || config.smtp.host || '127.0.0.1';
const SMTP_PROXY = hasEnvValue('EENGINE_SMTP_PROXY') ? getBoolean(readEnvValue('EENGINE_SMTP_PROXY')) : getBoolean(config.smtp.proxy);
const IMAP_PROXY_ENABLED = hasEnvValue('EENGINE_IMAP_PROXY_ENABLED')
? getBoolean(readEnvValue('EENGINE_IMAP_PROXY_ENABLED'))
: getBoolean(config['imap-proxy'].enabled);
const IMAP_PROXY_SECRET = readEnvValue('EENGINE_IMAP_PROXY_SECRET') || config['imap-proxy'].secret;
const IMAP_PROXY_PORT =
(readEnvValue('EENGINE_IMAP_PROXY_PORT') && Number(readEnvValue('EENGINE_IMAP_PROXY_PORT'))) || Number(config['imap-proxy'].port) || 2993;
const IMAP_PROXY_HOST = readEnvValue('EENGINE_IMAP_PROXY_HOST') || config['imap-proxy'].host || '127.0.0.1';
const IMAP_PROXY_PROXY = hasEnvValue('EENGINE_IMAP_PROXY_PROXY')
? getBoolean(readEnvValue('EENGINE_IMAP_PROXY_PROXY'))
: getBoolean(config['imap-proxy'].proxy);
const API_PROXY = hasEnvValue('EENGINE_API_PROXY') ? getBoolean(readEnvValue('EENGINE_API_PROXY')) : getBoolean(config.api.proxy);
logger.info({
msg: 'Starting EmailEngine',
version: packageData.version,
node: process.versions.node,
uvThreadpoolSize: Number(process.env.UV_THREADPOOL_SIZE),
workersImap: config.workers.imap,
workersWebhooks: config.workers.webhooks,
workersSubmission: config.workers.submit
});
const NO_ACTIVE_HANDLER_RESP = {
error: 'No active handler for requested account. Try again later.',
statusCode: 503,
code: 'WorkerNotAvailable'
};
// check for upgrades once in 8 hours
const UPGRADE_CHECK_TIMEOUT = 1 * 24 * 3600 * 1000;
const LICENSE_CHECK_TIMEOUT = 20 * 60 * 1000;
const licenseInfo = {
active: false,
details: false,
type: packageData.license
};
const queueEvents = {};
let preparedSettings = false;
const preparedSettingsString = readEnvValue('EENGINE_SETTINGS') || config.settings;
if (preparedSettingsString) {
// received a configuration block
try {
const { error, value } = Joi.object(settingsSchema).validate(JSON.parse(preparedSettingsString), {
abortEarly: false,
stripUnknown: true,
convert: true
});
if (error) {
throw error;
}
preparedSettings = value;
} catch (err) {
logger.error({ msg: 'Received invalid settings string', input: preparedSettingsString, err });
process.exit(1);
}
}
let preparedToken = false;
const preparedTokenString = readEnvValue('EENGINE_PREPARED_TOKEN') || config.preparedToken;
if (preparedTokenString) {
try {
preparedToken = msgpack.decode(Buffer.from(preparedTokenString, 'base64url'));
if (!preparedToken || !/^[0-9a-f]{64}$/i.test(preparedToken.id)) {
throw new Error('Invalid token format');
}
} catch (err) {
logger.error({ msg: 'Received invalid token string', input: preparedTokenString, err });
process.exit(1);
}
}
let preparedPassword = false;
const preparedPasswordString = readEnvValue('EENGINE_PREPARED_PASSWORD') || config.preparedPassword;
if (preparedPasswordString) {
try {
preparedPassword = Buffer.from(preparedPasswordString, 'base64url').toString();
if (!preparedPassword || preparedPassword.indexOf('$pbkdf2') !== 0) {
throw new Error('Invalid password format');
}
} catch (err) {
logger.error({ msg: 'Received invalid password string', input: preparedPasswordString, err });
process.exit(1);
}
}
const collectDefaultMetrics = promClient.collectDefaultMetrics;
collectDefaultMetrics({});
const metrics = {
threadStarts: new promClient.Counter({
name: 'thread_starts',
help: 'Number of started threads'
}),
threadStops: new promClient.Counter({
name: 'thread_stops',
help: 'Number of stopped threads'
}),
apiCall: new promClient.Counter({
name: 'api_call',
help: 'Number of API calls',
labelNames: ['method', 'statusCode', 'route']
}),
imapConnections: new promClient.Gauge({
name: 'imap_connections',
help: 'Current IMAP connection state',
labelNames: ['status']
}),
imapResponses: new promClient.Counter({
name: 'imap_responses',
help: 'IMAP responses',
labelNames: ['response', 'code']
}),
imapBytesSent: new promClient.Counter({
name: 'imap_bytes_sent',
help: 'IMAP bytes sent'
}),
imapBytesReceived: new promClient.Counter({
name: 'imap_bytes_received',
help: 'IMAP bytes received'
}),
webhooks: new promClient.Counter({
name: 'webhooks',
help: 'Webhooks sent',
labelNames: ['status', 'event']
}),
events: new promClient.Counter({
name: 'events',
help: 'Events fired',
labelNames: ['event']
}),
webhookReq: new promClient.Histogram({
name: 'webhook_req',
help: 'Duration of webhook requests',
buckets: [100, 250, 500, 750, 1000, 2500, 5000, 7500, 10000, 60 * 1000]
}),
queues: new promClient.Gauge({
name: 'queue_size',
help: 'Queue size',
labelNames: ['queue', 'state']
}),
queuesProcessed: new promClient.Counter({
name: 'queues_processed',
help: 'Processed job count',
labelNames: ['queue', 'status']
}),
emailengineConfig: new promClient.Gauge({
name: 'emailengine_config',
help: 'Configuration values',
labelNames: ['version', 'config']
}),
redisVersion: new promClient.Gauge({
name: 'redis_version',
help: 'Redis version',
labelNames: ['version']
}),
redisUptimeInSeconds: new promClient.Gauge({
name: 'redis_uptime_in_seconds',
help: 'Redis uptime in seconds'
}),
redisRejectedConnectionsTotal: new promClient.Gauge({
name: 'redis_rejected_connections_total',
help: 'Number of connections rejected by Redis'
}),
redisConfigMaxclients: new promClient.Gauge({
name: 'redis_config_maxclients',
help: 'Maximum client number for Redis'
}),
redisConnectedClients: new promClient.Gauge({
name: 'redis_connected_clients',
help: 'Number of client connections for Redis'
}),
redisSlowlogLength: new promClient.Gauge({
name: 'redis_slowlog_length',
help: 'Number of of entries in the Redis slow log'
}),
redisCommandsDurationSecondsTotal: new promClient.Gauge({
name: 'redis_commands_duration_seconds_total',
help: 'How many seconds spend on processing Redis commands'
}),
redisCommandsProcessedTotal: new promClient.Gauge({
name: 'redis_commands_processed_total',
help: 'How many commands processed by Redis'
}),
redisKeyspaceHitsTotal: new promClient.Gauge({
name: 'redis_keyspace_hits_total',
help: 'Number of successful lookup of keys in Redis'
}),
redisKeyspaceMissesTotal: new promClient.Gauge({
name: 'redis_keyspace_misses_total',
help: 'Number of failed lookup of keys in Redis'
}),
redisEvictedKeysTotal: new promClient.Gauge({
name: 'redis_evicted_keys_total',
help: 'Number of evicted keys due to maxmemory limit in Redis'
}),
redisMemoryUsedBytes: new promClient.Gauge({
name: 'redis_memory_used_bytes',
help: 'Total number of bytes allocated by Redis using its allocator'
}),
redisMemoryMaxBytes: new promClient.Gauge({
name: 'redis_memory_max_bytes',
help: 'The value of the Redis maxmemory configuration directive'
}),
redisMemFragmentationRatio: new promClient.Gauge({
name: 'redis_mem_fragmentation_ratio',
help: 'Ratio between used_memory_rss and used_memory in Redis'
}),
redisKeyCount: new promClient.Gauge({
name: 'redis_key_count',
help: 'Redis key counts',
labelNames: ['db']
}),
redisLastSaveTime: new promClient.Gauge({
name: 'redis_last_save_time',
help: 'Unix timestamp of the last RDB save time'
}),
redisOpsPerSec: new promClient.Gauge({
name: 'redis_instantaneous_ops_per_sec',
help: 'Throughput operations per second'
}),
redisCommandRuns: new promClient.Gauge({
name: 'redis_command_runs',
help: 'Redis command counts',
labelNames: ['command']
}),
redisCommandRunsFailed: new promClient.Gauge({
name: 'redis_command_runs_fail',
help: 'Redis command counts',
labelNames: ['command', 'status']
})
};
let callQueue = new Map();
let mids = 0;
let isClosing = false;
let assigning = false;
let unassigned = false;
let assigned = new Map();
let unassignCounter = new Map();
let workerAssigned = new WeakMap();
let onlineWorkers = new WeakSet();
let workers = new Map();
let availableIMAPWorkers = new Set();
let suspendedWorkerTypes = new Set();
const postMessage = (worker, payload, ignoreOffline, transferList) => {
if (!onlineWorkers.has(worker)) {
if (ignoreOffline) {
return false;
}
throw new Error('Requested worker thread not available');
}
return worker.postMessage(payload, transferList);
};
const countUnassignment = async account => {
if (!unassignCounter.has(account)) {
unassignCounter.set(account, []);
}
let arr = unassignCounter.get(account);
arr.push(Date.now());
if (arr.length > 10) {
arr = arr.slice(-10);
unassignCounter.set(account, arr);
}
let delay = 0;
if (arr.length === 1) {
delay = 0;
} else {
let lastDelay = arr[arr.length - 1] - arr[arr.length - 2];
// if last delay was longer than a minute, then reset
if (lastDelay >= 60 * 1000) {
delay = 0;
} else {
delay = Math.min(Math.ceil(lastDelay * 1.5), 60 * 1000);
}
}
await redis.hSetExists(`${REDIS_PREFIX}iad:${account}`, 'state', 'disconnected');
for (let worker of workers.get('api')) {
let callPayload = {
cmd: 'change',
account,
type: 'state',
key: 'disconnected',
payload: null
};
try {
postMessage(worker, callPayload, true);
} catch (err) {
logger.error({ msg: 'Failed to post state change to child', worker: worker.threadId, callPayload, err });
}
}
if (delay) {
await new Promise(resolve => setTimeout(resolve, delay));
return true;
} else {
return false;
}
};
let clearUnassignmentCounter = account => {
unassignCounter.delete(account);
};
let updateServerState = async (type, state, payload) => {
await redis.hset(`${REDIS_PREFIX}${type}`, 'state', state);
if (payload) {
await redis.hset(`${REDIS_PREFIX}${type}`, 'payload', JSON.stringify(payload));
}
if (workers.has('api')) {
for (let worker of workers.get('api')) {
let callPayload = {
cmd: 'change',
type: '${type}ServerState',
key: state,
payload: payload || null
};
try {
postMessage(worker, callPayload, true);
} catch (err) {
logger.error({ msg: 'Failed to post state change to child', worker: worker.threadId, callPayload, err });
}
}
}
};
async function sendWebhook(account, event, data) {
let serviceUrl = (await settings.get('serviceUrl')) || true;
let payload = {
serviceUrl,
account,
date: new Date().toISOString()
};
if (event) {
payload.event = event;
}
if (data) {
payload.data = data;
}
await Webhooks.pushToQueue(event, await Webhooks.formatPayload(event, payload));
}
let spawnWorker = async type => {
if (isClosing) {
return;
}
if (!workers.has(type)) {
workers.set(type, new Set());
}
if (suspendedWorkerTypes.has(type)) {
if (['smtp', 'imapProxy'].includes(type)) {
await updateServerState(type, 'suspended', {});
}
return;
}
if (['smtp', 'imapProxy'].includes(type)) {
let serverEnabled = await settings.get(`${type}ServerEnabled`);
if (!serverEnabled) {
await updateServerState(type, 'disabled', {});
return;
}
await updateServerState(type, 'spawning');
}
let worker = new Worker(pathlib.join(__dirname, 'workers', `${type.replace(/[A-Z]/g, c => `-${c.toLowerCase()}`)}.js`), {
argv,
env: SHARE_ENV,
trackUnmanagedFds: true
});
metrics.threadStarts.inc();
workers.get(type).add(worker);
worker.on('online', () => {
if (['smtp', 'imapProxy'].includes(type)) {
updateServerState(type, 'initializing').catch(err => logger.error({ msg: `Failed to update ${type} server state`, err }));
}
onlineWorkers.add(worker);
});
let exitHandler = async exitCode => {
onlineWorkers.delete(worker);
metrics.threadStops.inc();
workers.get(type).delete(worker);
if (['smtp', 'imapProxy'].includes(type)) {
updateServerState(type, suspendedWorkerTypes.has(type) ? 'suspended' : 'exited');
}
if (type === 'imap') {
availableIMAPWorkers.delete(worker);
if (workerAssigned.has(worker)) {
let accountList = workerAssigned.get(worker);
workerAssigned.delete(worker);
accountList.forEach(account => {
assigned.delete(account);
let shouldReassign = false;
// graceful reconnect
countUnassignment(account)
.then(sr => {
shouldReassign = sr;
})
.catch(() => {
shouldReassign = true;
})
.finally(() => {
unassigned.add(account);
if (shouldReassign) {
assignAccounts().catch(err => logger.error({ msg: 'Failed to assign accounts', n: 1, err }));
}
});
});
}
}
if (isClosing) {
return;
}
// spawning a new worker trigger reassign
if (suspendedWorkerTypes.has(type)) {
logger.info({ msg: 'Worker thread closed', exitCode, type });
} else {
logger.error({ msg: 'Worker exited', exitCode, type });
}
// trigger new spawn
await new Promise(r => setTimeout(r, 1000));
await spawnWorker(type);
};
worker.on('exit', exitCode => {
exitHandler(exitCode).catch(err => {
logger.error({ msg: 'Failed to handle worker exit', exitCode, worker: worker.threadId, err });
});
});
worker.on('message', message => {
if (!message) {
return;
}
if (message.cmd === 'resp' && message.mid && callQueue.has(message.mid)) {
let { resolve, reject, timer } = callQueue.get(message.mid);
clearTimeout(timer);
callQueue.delete(message.mid);
if (message.error) {
let err = new Error(message.error);
if (message.code) {
err.code = message.code;
}
if (message.statusCode) {
err.statusCode = message.statusCode;
}
if (message.info) {
err.info = message.info;
}
return reject(err);
} else {
return resolve(message.response);
}
}
if (message.cmd === 'call' && message.mid) {
return onCommand(worker, message.message)
.then(response => {
let callPayload = {
cmd: 'resp',
mid: message.mid,
response
};
try {
postMessage(worker, callPayload);
} catch (err) {
logger.error({ msg: 'Failed to post state change to child', worker: worker.threadId, callPayload, err });
}
})
.catch(err => {
let callPayload = {
cmd: 'resp',
mid: message.mid,
error: err.message,
code: err.code,
statusCode: err.statusCode,
info: err.info
};
try {
postMessage(worker, callPayload);
} catch (err) {
logger.error({ msg: 'Failed to post state change to child', worker: worker.threadId, callPayload, err });
}
});
}
switch (message.cmd) {
case 'metrics': {
let statUpdateKey = false;
switch (message.key) {
// gather for dashboard counter
case 'webhooks': {
let { status } = message.args[0] || {};
statUpdateKey = `${message.key}:${status}`;
break;
}
case 'webhookReq': {
break;
}
case 'events': {
let { event } = message.args[0] || {};
switch (event) {
case MESSAGE_NEW_NOTIFY:
case MESSAGE_DELETED_NOTIFY:
case CONNECT_ERROR_NOTIFY:
statUpdateKey = `${message.key}:${event}`;
break;
}
break;
}
case 'apiCall': {
let { statusCode } = message.args[0] || {};
let success = statusCode >= 200 && statusCode < 300;
statUpdateKey = `${message.key}:${success ? 'success' : 'fail'}`;
break;
}
case 'queuesProcessed': {
let { queue, status } = message.args[0] || {};
if (['submit'].includes(queue)) {
statUpdateKey = `${queue}:${status === 'completed' ? 'success' : 'fail'}`;
}
break;
}
}
if (statUpdateKey) {
// increment counter in redis
let now = new Date();
// we keep a separate hash value for each ISO day
let dateStr = `${now
.toISOString()
.substr(0, 10)
.replace(/[^0-9]+/g, '')}`;
// hash key for bucket
let timeStr = `${now
.toISOString()
// bucket includes 1 minute
.substr(0, 16)
.replace(/[^0-9]+/g, '')}`;
let hkey = `${REDIS_PREFIX}stats:${statUpdateKey}:${dateStr}`;
redis
.multi()
.hincrby(hkey, timeStr, 1)
.sadd(`${REDIS_PREFIX}stats:keys`, statUpdateKey)
// keep alive at most 2 days
.expire(hkey, MAX_DAYS_STATS + 1 * 24 * 3600)
.exec()
.catch(() => false);
}
if (message.key && metrics[message.key] && typeof metrics[message.key][message.method] === 'function') {
metrics[message.key][message.method](...message.args);
}
return;
}
case 'settings':
availableIMAPWorkers.forEach(worker => {
try {
postMessage(worker, message);
} catch (err) {
logger.error({ msg: 'Failed to post command to child', worker: worker.threadId, callPayload: message, err });
}
});
return;
case 'change':
switch (message.type) {
case 'smtpServerState':
case 'imapProxyServerState': {
let type = message.type.replace(/ServerState$/, '');
updateServerState(type, message.key, message.payload).catch(err => logger.error({ msg: `Failed to update ${type} server state`, err }));
break;
}
default:
// forward all state changes to the API worker
for (let worker of workers.get('api')) {
try {
postMessage(worker, message, true);
} catch (err) {
logger.error({ msg: 'Failed to post state change to child', worker: worker.threadId, callPayload: message, err });
}
}
}
break;
}
switch (type) {
case 'imap':
return processImapWorkerMessage(worker, message);
}
});
};
function processImapWorkerMessage(worker, message) {
if (!message || !message.cmd) {
logger.debug({ msg: 'Unexpected message', type: 'imap', message });
return;
}
switch (message.cmd) {
case 'ready':
availableIMAPWorkers.add(worker);
// assign pending accounts
assignAccounts().catch(err => logger.error({ msg: 'Failed to assign accounts', n: 2, err }));
break;
}
}
async function call(worker, message, transferList) {
return new Promise((resolve, reject) => {
let mid = `${Date.now()}:${++mids}`;
let ttl = Math.max(message.timeout || 0, EENGINE_TIMEOUT || 0);
let timer = setTimeout(() => {
let err = new Error('Timeout waiting for command response [T1]');
err.statusCode = 504;
err.code = 'Timeout';
err.ttl = ttl;
err.command = message;
reject(err);
}, ttl);
callQueue.set(mid, { resolve, reject, timer });
try {
postMessage(
worker,
{
cmd: 'call',
mid,
message
},
false,
transferList
);
} catch (err) {
callQueue.delete(mid);
return reject(err);
}
});
}
async function assignAccounts() {
if (assigning) {
return false;
}
assigning = true;
try {
if (!unassigned) {
// first run
// list all available accounts and assign to worker threads
let accounts = await redis.smembers(`${REDIS_PREFIX}ia:accounts`);
unassigned = new Set(accounts);
}
if (!availableIMAPWorkers.size || !unassigned.size) {
// nothing to do here
return;
}
logger.info({
msg: 'Assigning connections',
unassigned: unassigned.size,
workersAvailable: availableIMAPWorkers.size,
setupDelay: CONNECION_SETUP_DELAY
});
for (let account of unassigned) {
if (!availableIMAPWorkers.size) {
// out of workers
break;
}
let worker = selectRendezvousNode(account, Array.from(availableIMAPWorkers));
if (!workerAssigned.has(worker)) {
workerAssigned.set(worker, new Set());
}
workerAssigned.get(worker).add(account);
assigned.set(account, worker);
unassigned.delete(account);
await call(worker, {
cmd: 'assign',
account
});
if (CONNECION_SETUP_DELAY) {
await new Promise(r => setTimeout(r, CONNECION_SETUP_DELAY));
}
}
} finally {
assigning = false;
}
}
let licenseCheckTimer = false;
let checkingLicense = false;
let licenseCheckHandler = async opts => {
if (checkingLicense) {
return;
}
checkingLicense = true;
clearTimeout(licenseCheckTimer);
try {
opts = opts || {};
let { subscriptionCheckTimeout } = opts;
let now = Date.now();
subscriptionCheckTimeout = subscriptionCheckTimeout || SUBSCRIPTION_CHECK_TIMEOUT;
let kv = await redis.hget(`${REDIS_PREFIX}settings`, 'kv');
let checkKv = true;
if (kv && typeof kv === 'string' && cv(packageData.version, Buffer.from(kv, 'hex').toString(), '<=')) {
checkKv = false;
}
if (
checkKv &&
licenseInfo.active &&
!(licenseInfo.details && licenseInfo.details.expires) &&
(await redis.hUpdateBigger(`${REDIS_PREFIX}settings`, 'subcheck', now - subscriptionCheckTimeout, now))
) {
// validate license
try {
let res = await fetchCmd(`https://postalsys.com/licenses/validate`, {
method: 'post',
headers: {
'User-Agent': `${packageData.name}/${packageData.version} (+${packageData.homepage})`,
'Content-Type': 'application/json'
},
body: JSON.stringify({
key: licenseInfo.details.key,
version: packageData.version,
app: '@postalsys/emailengine-app'
})
});
let data = await res.json();
if (!res.ok) {
if (data.invalidate) {
let res = await redis.hUpdateBigger(`${REDIS_PREFIX}settings`, 'subexp', now, now + SUBSCRIPTION_ALLOW_DELAY);
if (res === 2) {
// grace period over
logger.info({ msg: 'License not valid', license: licenseInfo.details, data });
await redis.multi().hdel(`${REDIS_PREFIX}settings`, 'license').hdel(`${REDIS_PREFIX}settings`, 'subexp').exec();
licenseInfo.active = false;
licenseInfo.details = false;
licenseInfo.type = packageData.license;
}
}
} else {