overleaf/services/real-time/app/js/EventLogger.js

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let EventLogger
const logger = require('@overleaf/logger')
const metrics = require('@overleaf/metrics')
const settings = require('@overleaf/settings')
// keep track of message counters to detect duplicate and out of order events
// messsage ids have the format "UNIQUEHOSTKEY-COUNTER"
const EVENT_LOG_COUNTER = {}
const EVENT_LOG_TIMESTAMP = {}
let EVENT_LAST_CLEAN_TIMESTAMP = 0
// counter for debug logs
let COUNTER = 0
module.exports = EventLogger = {
MAX_STALE_TIME_IN_MS: 3600 * 1000,
debugEvent(channel, message) {
if (settings.debugEvents > 0) {
logger.info({ channel, message, counter: COUNTER++ }, 'logging event')
[misc] reland decaff cleanup (#166) * [misc] decaff cleanup: RoomManager * [misc] decaff cleanup: RedisClientManager * [misc] decaff cleanup: SafeJsonParse * [misc] decaff cleanup: WebApiManager * [misc] decaff cleanup: WebsocketController * [misc] decaff cleanup: WebsocketLoadBalancer * [misc] decaff cleanup: SessionSockets * [misc] decaff cleanup: HttpController * [misc] decaff cleanup: HttpApiController * [misc] decaff cleanup: HealthCheckManager * [misc] decaff cleanup: EventLogger * [misc] decaff cleanup: Errors o-error will eliminate most of it -- when we migrate over. * [misc] decaff cleanup: DrainManager * [misc] decaff cleanup: DocumentUpdaterManager * [misc] decaff cleanup: DocumentUpdaterController: no-unused-vars * [misc] decaff cleanup: DocumentUpdaterController: Array.from * [misc] decaff cleanup: DocumentUpdaterController: implicit return * [misc] decaff cleanup: DocumentUpdaterController: IIFE * [misc] decaff cleanup: DocumentUpdaterController: null checks * [misc] decaff cleanup: DocumentUpdaterController: simpler loops * [misc] decaff cleanup: DocumentUpdaterController: move module name def * [misc] decaff cleanup: ConnectedUsersManager: handle-callback-err * [misc] decaff cleanup: ConnectedUsersManager: implicit returns * [misc] decaff cleanup: ConnectedUsersManager: null checks * [misc] decaff cleanup: ChannelManager: no-unused-vars * [misc] decaff cleanup: ChannelManager: implicit returns * [misc] decaff cleanup: ChannelManager: other cleanup - var -> const - drop variable assignment before return * [misc] decaff cleanup: AuthorizationManager: handle-callback-err Note: This requires a change in WebsocketController to provide a dummy callback. * [misc] decaff cleanup: AuthorizationManager: Array.from * [misc] decaff cleanup: AuthorizationManager: implicit returns * [misc] decaff cleanup: AuthorizationManager: null checks * [misc] decaff cleanup: Router: handle-callback-err * [misc] decaff cleanup: Router: standard/no-callback-literal * [misc] decaff cleanup: Router: Array.from * [misc] decaff cleanup: Router: implicit returns * [misc] decaff cleanup: Router: refactor __guard__ wrapper * [misc] decaff cleanup: Router: null checks And a minor bug fix: user.id -> user._id * [misc] decaff cleanup: Router: move variable declarations to assignments * [misc] decaff cleanup: app: implicit returns * [misc] decaff cleanup: app: __guard__ * [misc] decaff cleanup: app: null checks * [misc] decaff cleanup: app: function definitions * [misc] decaff cleanup: app: drop unused next argument * [misc] decaff cleanup: app: var -> const
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settings.debugEvents--
}
},
checkEventOrder(channel, messageId) {
if (typeof messageId !== 'string') {
return
}
[misc] reland decaff cleanup (#166) * [misc] decaff cleanup: RoomManager * [misc] decaff cleanup: RedisClientManager * [misc] decaff cleanup: SafeJsonParse * [misc] decaff cleanup: WebApiManager * [misc] decaff cleanup: WebsocketController * [misc] decaff cleanup: WebsocketLoadBalancer * [misc] decaff cleanup: SessionSockets * [misc] decaff cleanup: HttpController * [misc] decaff cleanup: HttpApiController * [misc] decaff cleanup: HealthCheckManager * [misc] decaff cleanup: EventLogger * [misc] decaff cleanup: Errors o-error will eliminate most of it -- when we migrate over. * [misc] decaff cleanup: DrainManager * [misc] decaff cleanup: DocumentUpdaterManager * [misc] decaff cleanup: DocumentUpdaterController: no-unused-vars * [misc] decaff cleanup: DocumentUpdaterController: Array.from * [misc] decaff cleanup: DocumentUpdaterController: implicit return * [misc] decaff cleanup: DocumentUpdaterController: IIFE * [misc] decaff cleanup: DocumentUpdaterController: null checks * [misc] decaff cleanup: DocumentUpdaterController: simpler loops * [misc] decaff cleanup: DocumentUpdaterController: move module name def * [misc] decaff cleanup: ConnectedUsersManager: handle-callback-err * [misc] decaff cleanup: ConnectedUsersManager: implicit returns * [misc] decaff cleanup: ConnectedUsersManager: null checks * [misc] decaff cleanup: ChannelManager: no-unused-vars * [misc] decaff cleanup: ChannelManager: implicit returns * [misc] decaff cleanup: ChannelManager: other cleanup - var -> const - drop variable assignment before return * [misc] decaff cleanup: AuthorizationManager: handle-callback-err Note: This requires a change in WebsocketController to provide a dummy callback. * [misc] decaff cleanup: AuthorizationManager: Array.from * [misc] decaff cleanup: AuthorizationManager: implicit returns * [misc] decaff cleanup: AuthorizationManager: null checks * [misc] decaff cleanup: Router: handle-callback-err * [misc] decaff cleanup: Router: standard/no-callback-literal * [misc] decaff cleanup: Router: Array.from * [misc] decaff cleanup: Router: implicit returns * [misc] decaff cleanup: Router: refactor __guard__ wrapper * [misc] decaff cleanup: Router: null checks And a minor bug fix: user.id -> user._id * [misc] decaff cleanup: Router: move variable declarations to assignments * [misc] decaff cleanup: app: implicit returns * [misc] decaff cleanup: app: __guard__ * [misc] decaff cleanup: app: null checks * [misc] decaff cleanup: app: function definitions * [misc] decaff cleanup: app: drop unused next argument * [misc] decaff cleanup: app: var -> const
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let result
if (!(result = messageId.match(/^(.*)-(\d+)$/))) {
return
}
const key = result[1]
const count = parseInt(result[2], 0)
if (!(count >= 0)) {
// ignore checks if counter is not present
return
}
// store the last count in a hash for each host
const previous = EventLogger._storeEventCount(key, count)
[misc] reland decaff cleanup (#166) * [misc] decaff cleanup: RoomManager * [misc] decaff cleanup: RedisClientManager * [misc] decaff cleanup: SafeJsonParse * [misc] decaff cleanup: WebApiManager * [misc] decaff cleanup: WebsocketController * [misc] decaff cleanup: WebsocketLoadBalancer * [misc] decaff cleanup: SessionSockets * [misc] decaff cleanup: HttpController * [misc] decaff cleanup: HttpApiController * [misc] decaff cleanup: HealthCheckManager * [misc] decaff cleanup: EventLogger * [misc] decaff cleanup: Errors o-error will eliminate most of it -- when we migrate over. * [misc] decaff cleanup: DrainManager * [misc] decaff cleanup: DocumentUpdaterManager * [misc] decaff cleanup: DocumentUpdaterController: no-unused-vars * [misc] decaff cleanup: DocumentUpdaterController: Array.from * [misc] decaff cleanup: DocumentUpdaterController: implicit return * [misc] decaff cleanup: DocumentUpdaterController: IIFE * [misc] decaff cleanup: DocumentUpdaterController: null checks * [misc] decaff cleanup: DocumentUpdaterController: simpler loops * [misc] decaff cleanup: DocumentUpdaterController: move module name def * [misc] decaff cleanup: ConnectedUsersManager: handle-callback-err * [misc] decaff cleanup: ConnectedUsersManager: implicit returns * [misc] decaff cleanup: ConnectedUsersManager: null checks * [misc] decaff cleanup: ChannelManager: no-unused-vars * [misc] decaff cleanup: ChannelManager: implicit returns * [misc] decaff cleanup: ChannelManager: other cleanup - var -> const - drop variable assignment before return * [misc] decaff cleanup: AuthorizationManager: handle-callback-err Note: This requires a change in WebsocketController to provide a dummy callback. * [misc] decaff cleanup: AuthorizationManager: Array.from * [misc] decaff cleanup: AuthorizationManager: implicit returns * [misc] decaff cleanup: AuthorizationManager: null checks * [misc] decaff cleanup: Router: handle-callback-err * [misc] decaff cleanup: Router: standard/no-callback-literal * [misc] decaff cleanup: Router: Array.from * [misc] decaff cleanup: Router: implicit returns * [misc] decaff cleanup: Router: refactor __guard__ wrapper * [misc] decaff cleanup: Router: null checks And a minor bug fix: user.id -> user._id * [misc] decaff cleanup: Router: move variable declarations to assignments * [misc] decaff cleanup: app: implicit returns * [misc] decaff cleanup: app: __guard__ * [misc] decaff cleanup: app: null checks * [misc] decaff cleanup: app: function definitions * [misc] decaff cleanup: app: drop unused next argument * [misc] decaff cleanup: app: var -> const
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if (!previous || count === previous + 1) {
metrics.inc(`event.${channel}.valid`)
return // order is ok
}
if (count === previous) {
metrics.inc(`event.${channel}.duplicate`)
logger.warn({ channel, messageId }, 'duplicate event')
return 'duplicate'
} else {
metrics.inc(`event.${channel}.out-of-order`)
logger.warn(
{ channel, messageId, key, previous, count },
'out of order event'
)
return 'out-of-order'
}
},
_storeEventCount(key, count) {
const previous = EVENT_LOG_COUNTER[key]
const now = Date.now()
EVENT_LOG_COUNTER[key] = count
EVENT_LOG_TIMESTAMP[key] = now
// periodically remove old counts
if (now - EVENT_LAST_CLEAN_TIMESTAMP > EventLogger.MAX_STALE_TIME_IN_MS) {
EventLogger._cleanEventStream(now)
EVENT_LAST_CLEAN_TIMESTAMP = now
}
return previous
},
_cleanEventStream(now) {
[misc] reland decaff cleanup (#166) * [misc] decaff cleanup: RoomManager * [misc] decaff cleanup: RedisClientManager * [misc] decaff cleanup: SafeJsonParse * [misc] decaff cleanup: WebApiManager * [misc] decaff cleanup: WebsocketController * [misc] decaff cleanup: WebsocketLoadBalancer * [misc] decaff cleanup: SessionSockets * [misc] decaff cleanup: HttpController * [misc] decaff cleanup: HttpApiController * [misc] decaff cleanup: HealthCheckManager * [misc] decaff cleanup: EventLogger * [misc] decaff cleanup: Errors o-error will eliminate most of it -- when we migrate over. * [misc] decaff cleanup: DrainManager * [misc] decaff cleanup: DocumentUpdaterManager * [misc] decaff cleanup: DocumentUpdaterController: no-unused-vars * [misc] decaff cleanup: DocumentUpdaterController: Array.from * [misc] decaff cleanup: DocumentUpdaterController: implicit return * [misc] decaff cleanup: DocumentUpdaterController: IIFE * [misc] decaff cleanup: DocumentUpdaterController: null checks * [misc] decaff cleanup: DocumentUpdaterController: simpler loops * [misc] decaff cleanup: DocumentUpdaterController: move module name def * [misc] decaff cleanup: ConnectedUsersManager: handle-callback-err * [misc] decaff cleanup: ConnectedUsersManager: implicit returns * [misc] decaff cleanup: ConnectedUsersManager: null checks * [misc] decaff cleanup: ChannelManager: no-unused-vars * [misc] decaff cleanup: ChannelManager: implicit returns * [misc] decaff cleanup: ChannelManager: other cleanup - var -> const - drop variable assignment before return * [misc] decaff cleanup: AuthorizationManager: handle-callback-err Note: This requires a change in WebsocketController to provide a dummy callback. * [misc] decaff cleanup: AuthorizationManager: Array.from * [misc] decaff cleanup: AuthorizationManager: implicit returns * [misc] decaff cleanup: AuthorizationManager: null checks * [misc] decaff cleanup: Router: handle-callback-err * [misc] decaff cleanup: Router: standard/no-callback-literal * [misc] decaff cleanup: Router: Array.from * [misc] decaff cleanup: Router: implicit returns * [misc] decaff cleanup: Router: refactor __guard__ wrapper * [misc] decaff cleanup: Router: null checks And a minor bug fix: user.id -> user._id * [misc] decaff cleanup: Router: move variable declarations to assignments * [misc] decaff cleanup: app: implicit returns * [misc] decaff cleanup: app: __guard__ * [misc] decaff cleanup: app: null checks * [misc] decaff cleanup: app: function definitions * [misc] decaff cleanup: app: drop unused next argument * [misc] decaff cleanup: app: var -> const
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Object.entries(EVENT_LOG_TIMESTAMP).forEach(([key, timestamp]) => {
if (now - timestamp > EventLogger.MAX_STALE_TIME_IN_MS) {
delete EVENT_LOG_COUNTER[key]
delete EVENT_LOG_TIMESTAMP[key]
}
[misc] reland decaff cleanup (#166) * [misc] decaff cleanup: RoomManager * [misc] decaff cleanup: RedisClientManager * [misc] decaff cleanup: SafeJsonParse * [misc] decaff cleanup: WebApiManager * [misc] decaff cleanup: WebsocketController * [misc] decaff cleanup: WebsocketLoadBalancer * [misc] decaff cleanup: SessionSockets * [misc] decaff cleanup: HttpController * [misc] decaff cleanup: HttpApiController * [misc] decaff cleanup: HealthCheckManager * [misc] decaff cleanup: EventLogger * [misc] decaff cleanup: Errors o-error will eliminate most of it -- when we migrate over. * [misc] decaff cleanup: DrainManager * [misc] decaff cleanup: DocumentUpdaterManager * [misc] decaff cleanup: DocumentUpdaterController: no-unused-vars * [misc] decaff cleanup: DocumentUpdaterController: Array.from * [misc] decaff cleanup: DocumentUpdaterController: implicit return * [misc] decaff cleanup: DocumentUpdaterController: IIFE * [misc] decaff cleanup: DocumentUpdaterController: null checks * [misc] decaff cleanup: DocumentUpdaterController: simpler loops * [misc] decaff cleanup: DocumentUpdaterController: move module name def * [misc] decaff cleanup: ConnectedUsersManager: handle-callback-err * [misc] decaff cleanup: ConnectedUsersManager: implicit returns * [misc] decaff cleanup: ConnectedUsersManager: null checks * [misc] decaff cleanup: ChannelManager: no-unused-vars * [misc] decaff cleanup: ChannelManager: implicit returns * [misc] decaff cleanup: ChannelManager: other cleanup - var -> const - drop variable assignment before return * [misc] decaff cleanup: AuthorizationManager: handle-callback-err Note: This requires a change in WebsocketController to provide a dummy callback. * [misc] decaff cleanup: AuthorizationManager: Array.from * [misc] decaff cleanup: AuthorizationManager: implicit returns * [misc] decaff cleanup: AuthorizationManager: null checks * [misc] decaff cleanup: Router: handle-callback-err * [misc] decaff cleanup: Router: standard/no-callback-literal * [misc] decaff cleanup: Router: Array.from * [misc] decaff cleanup: Router: implicit returns * [misc] decaff cleanup: Router: refactor __guard__ wrapper * [misc] decaff cleanup: Router: null checks And a minor bug fix: user.id -> user._id * [misc] decaff cleanup: Router: move variable declarations to assignments * [misc] decaff cleanup: app: implicit returns * [misc] decaff cleanup: app: __guard__ * [misc] decaff cleanup: app: null checks * [misc] decaff cleanup: app: function definitions * [misc] decaff cleanup: app: drop unused next argument * [misc] decaff cleanup: app: var -> const
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})
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},
}