[🐴] Refactor event bus (#3919)
* Refactor to singleton class outside react * Fix retry, remove debug logszio/stable
Eric Bailey
GitHub
parent
0c6bf276dd
commit
ce2eddca8e
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@ -3,316 +3,51 @@ import EventEmitter from 'eventemitter3'
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import {nanoid} from 'nanoid/non-secure'
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import {logger} from '#/logger'
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import {DEFAULT_POLL_INTERVAL} from '#/state/messages/events/const'
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import {
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MessagesEventBusDispatch,
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MessagesEventBusDispatchEvent,
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MessagesEventBusError,
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MessagesEventBusErrorCode,
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MessagesEventBusEvents,
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MessagesEventBusParams,
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MessagesEventBusState,
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MessagesEventBusStatus,
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} from '#/state/messages/events/types'
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const LOGGER_CONTEXT = 'MessagesEventBus'
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const DEFAULT_POLL_INTERVAL = 60e3
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export class MessagesEventBus {
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private id: string
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private agent: BskyAgent
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private __tempFromUserDid: string
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private emitter = new EventEmitter()
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private emitter = new EventEmitter<MessagesEventBusEvents>()
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private status: MessagesEventBusStatus = MessagesEventBusStatus.Uninitialized
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private status: MessagesEventBusStatus = MessagesEventBusStatus.Initializing
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private error: MessagesEventBusError | undefined
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private latestRev: string | undefined = undefined
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private pollInterval = DEFAULT_POLL_INTERVAL
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private requestedPollIntervals: Map<string, number> = new Map()
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snapshot: MessagesEventBusState | undefined
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constructor(params: MessagesEventBusParams) {
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this.id = nanoid(3)
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this.agent = params.agent
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this.__tempFromUserDid = params.__tempFromUserDid
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this.subscribe = this.subscribe.bind(this)
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this.getSnapshot = this.getSnapshot.bind(this)
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this.init = this.init.bind(this)
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this.suspend = this.suspend.bind(this)
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this.resume = this.resume.bind(this)
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this.requestPollInterval = this.requestPollInterval.bind(this)
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this.trail = this.trail.bind(this)
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this.trailConvo = this.trailConvo.bind(this)
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}
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private commit() {
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this.snapshot = undefined
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this.subscribers.forEach(subscriber => subscriber())
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}
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private subscribers: (() => void)[] = []
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subscribe(subscriber: () => void) {
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if (this.subscribers.length === 0) this.init()
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this.subscribers.push(subscriber)
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return () => {
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this.subscribers = this.subscribers.filter(s => s !== subscriber)
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if (this.subscribers.length === 0) this.suspend()
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}
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}
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getSnapshot(): MessagesEventBusState {
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if (!this.snapshot) this.snapshot = this.generateSnapshot()
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// logger.debug(`${LOGGER_CONTEXT}: snapshotted`, {}, logger.DebugContext.convo)
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return this.snapshot
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}
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private generateSnapshot(): MessagesEventBusState {
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switch (this.status) {
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case MessagesEventBusStatus.Initializing: {
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return {
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status: MessagesEventBusStatus.Initializing,
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rev: undefined,
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error: undefined,
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requestPollInterval: this.requestPollInterval,
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trail: this.trail,
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trailConvo: this.trailConvo,
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}
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}
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case MessagesEventBusStatus.Ready: {
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return {
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status: this.status,
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rev: this.latestRev!,
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error: undefined,
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requestPollInterval: this.requestPollInterval,
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trail: this.trail,
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trailConvo: this.trailConvo,
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}
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}
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case MessagesEventBusStatus.Suspended: {
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return {
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status: this.status,
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rev: this.latestRev,
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error: undefined,
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requestPollInterval: this.requestPollInterval,
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trail: this.trail,
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trailConvo: this.trailConvo,
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}
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}
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case MessagesEventBusStatus.Error: {
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return {
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status: MessagesEventBusStatus.Error,
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rev: this.latestRev,
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error: this.error || {
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code: MessagesEventBusErrorCode.Unknown,
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retry: () => {
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this.init()
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},
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},
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requestPollInterval: this.requestPollInterval,
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trail: this.trail,
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trailConvo: this.trailConvo,
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}
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}
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default: {
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return {
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status: MessagesEventBusStatus.Uninitialized,
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rev: undefined,
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error: undefined,
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requestPollInterval: this.requestPollInterval,
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trail: this.trail,
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trailConvo: this.trailConvo,
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}
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}
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}
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}
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dispatch(action: MessagesEventBusDispatch) {
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const prevStatus = this.status
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switch (this.status) {
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case MessagesEventBusStatus.Uninitialized: {
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switch (action.event) {
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case MessagesEventBusDispatchEvent.Init: {
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this.status = MessagesEventBusStatus.Initializing
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this.setup()
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break
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}
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}
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break
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}
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case MessagesEventBusStatus.Initializing: {
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switch (action.event) {
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case MessagesEventBusDispatchEvent.Ready: {
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this.status = MessagesEventBusStatus.Ready
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this.resetPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Background: {
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this.status = MessagesEventBusStatus.Backgrounded
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this.resetPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Suspend: {
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this.status = MessagesEventBusStatus.Suspended
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break
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}
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case MessagesEventBusDispatchEvent.Error: {
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this.status = MessagesEventBusStatus.Error
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this.error = action.payload
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break
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}
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}
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break
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}
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case MessagesEventBusStatus.Ready: {
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switch (action.event) {
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case MessagesEventBusDispatchEvent.Background: {
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this.status = MessagesEventBusStatus.Backgrounded
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this.resetPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Suspend: {
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this.status = MessagesEventBusStatus.Suspended
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this.stopPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Error: {
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this.status = MessagesEventBusStatus.Error
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this.error = action.payload
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this.stopPoll()
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break
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}
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}
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break
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}
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case MessagesEventBusStatus.Backgrounded: {
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switch (action.event) {
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case MessagesEventBusDispatchEvent.Resume: {
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this.status = MessagesEventBusStatus.Ready
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this.resetPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Suspend: {
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this.status = MessagesEventBusStatus.Suspended
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this.stopPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Error: {
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this.status = MessagesEventBusStatus.Error
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this.error = action.payload
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this.stopPoll()
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break
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}
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}
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break
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}
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case MessagesEventBusStatus.Suspended: {
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switch (action.event) {
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case MessagesEventBusDispatchEvent.Resume: {
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this.status = MessagesEventBusStatus.Ready
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this.resetPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Background: {
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this.status = MessagesEventBusStatus.Backgrounded
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this.resetPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Error: {
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this.status = MessagesEventBusStatus.Error
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this.error = action.payload
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this.stopPoll()
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break
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}
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}
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break
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}
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case MessagesEventBusStatus.Error: {
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switch (action.event) {
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case MessagesEventBusDispatchEvent.Resume:
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case MessagesEventBusDispatchEvent.Init: {
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this.status = MessagesEventBusStatus.Initializing
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this.error = undefined
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this.latestRev = undefined
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this.setup()
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break
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}
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}
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break
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}
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default:
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break
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}
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logger.debug(
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`${LOGGER_CONTEXT}: dispatch '${action.event}'`,
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{
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id: this.id,
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prev: prevStatus,
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next: this.status,
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},
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logger.DebugContext.convo,
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)
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this.commit()
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}
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private async setup() {
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logger.debug(`${LOGGER_CONTEXT}: setup`, {}, logger.DebugContext.convo)
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try {
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await this.initializeLatestRev()
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this.dispatch({event: MessagesEventBusDispatchEvent.Ready})
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} catch (e: any) {
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logger.error(e, {
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context: `${LOGGER_CONTEXT}: setup failed`,
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})
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this.dispatch({
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event: MessagesEventBusDispatchEvent.Error,
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payload: {
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exception: e,
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code: MessagesEventBusErrorCode.InitFailed,
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retry: () => {
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this.init()
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},
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},
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})
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}
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}
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init() {
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logger.debug(`${LOGGER_CONTEXT}: init`, {}, logger.DebugContext.convo)
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this.dispatch({event: MessagesEventBusDispatchEvent.Init})
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}
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background() {
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logger.debug(`${LOGGER_CONTEXT}: background`, {}, logger.DebugContext.convo)
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this.dispatch({event: MessagesEventBusDispatchEvent.Background})
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}
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suspend() {
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logger.debug(`${LOGGER_CONTEXT}: suspend`, {}, logger.DebugContext.convo)
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this.dispatch({event: MessagesEventBusDispatchEvent.Suspend})
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}
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resume() {
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logger.debug(`${LOGGER_CONTEXT}: resume`, {}, logger.DebugContext.convo)
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this.dispatch({event: MessagesEventBusDispatchEvent.Resume})
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this.init()
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}
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requestPollInterval(interval: number) {
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const id = nanoid()
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this.requestedPollIntervals.set(id, interval)
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this.resetPoll()
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this.dispatch({
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event: MessagesEventBusDispatchEvent.UpdatePoll,
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})
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return () => {
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this.requestedPollIntervals.delete(id)
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this.resetPoll()
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this.dispatch({
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event: MessagesEventBusDispatchEvent.UpdatePoll,
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})
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}
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}
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@ -346,30 +81,226 @@ export class MessagesEventBus {
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}
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}
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private async initializeLatestRev() {
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getLatestRev() {
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return this.latestRev
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}
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onConnect(handler: () => void) {
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this.emitter.on('connect', handler)
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if (
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this.status === MessagesEventBusStatus.Ready ||
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this.status === MessagesEventBusStatus.Backgrounded ||
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this.status === MessagesEventBusStatus.Suspended
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) {
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handler()
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}
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return () => {
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this.emitter.off('connect', handler)
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}
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}
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onError(handler: (payload?: MessagesEventBusError) => void) {
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this.emitter.on('error', handler)
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if (this.status === MessagesEventBusStatus.Error) {
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handler(this.error)
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}
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return () => {
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this.emitter.off('error', handler)
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}
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}
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background() {
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logger.debug(`${LOGGER_CONTEXT}: background`, {}, logger.DebugContext.convo)
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this.dispatch({event: MessagesEventBusDispatchEvent.Background})
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}
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suspend() {
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logger.debug(`${LOGGER_CONTEXT}: suspend`, {}, logger.DebugContext.convo)
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this.dispatch({event: MessagesEventBusDispatchEvent.Suspend})
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}
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resume() {
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logger.debug(`${LOGGER_CONTEXT}: resume`, {}, logger.DebugContext.convo)
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this.dispatch({event: MessagesEventBusDispatchEvent.Resume})
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}
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private dispatch(action: MessagesEventBusDispatch) {
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const prevStatus = this.status
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switch (this.status) {
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case MessagesEventBusStatus.Initializing: {
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switch (action.event) {
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case MessagesEventBusDispatchEvent.Ready: {
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this.status = MessagesEventBusStatus.Ready
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this.resetPoll()
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this.emitter.emit('connect')
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break
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}
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case MessagesEventBusDispatchEvent.Background: {
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this.status = MessagesEventBusStatus.Backgrounded
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this.resetPoll()
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this.emitter.emit('connect')
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break
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}
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case MessagesEventBusDispatchEvent.Suspend: {
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this.status = MessagesEventBusStatus.Suspended
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break
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}
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case MessagesEventBusDispatchEvent.Error: {
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this.status = MessagesEventBusStatus.Error
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this.error = action.payload
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this.emitter.emit('error', action.payload)
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break
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}
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}
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break
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}
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case MessagesEventBusStatus.Ready: {
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switch (action.event) {
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case MessagesEventBusDispatchEvent.Background: {
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this.status = MessagesEventBusStatus.Backgrounded
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this.resetPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Suspend: {
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this.status = MessagesEventBusStatus.Suspended
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this.stopPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Error: {
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this.status = MessagesEventBusStatus.Error
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this.error = action.payload
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this.stopPoll()
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this.emitter.emit('error', action.payload)
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break
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}
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case MessagesEventBusDispatchEvent.UpdatePoll: {
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this.resetPoll()
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break
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}
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}
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break
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}
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case MessagesEventBusStatus.Backgrounded: {
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switch (action.event) {
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case MessagesEventBusDispatchEvent.Resume: {
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this.status = MessagesEventBusStatus.Ready
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this.resetPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Suspend: {
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this.status = MessagesEventBusStatus.Suspended
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this.stopPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Error: {
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this.status = MessagesEventBusStatus.Error
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this.error = action.payload
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this.stopPoll()
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this.emitter.emit('error', action.payload)
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break
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}
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case MessagesEventBusDispatchEvent.UpdatePoll: {
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this.resetPoll()
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break
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}
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}
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break
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}
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case MessagesEventBusStatus.Suspended: {
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switch (action.event) {
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case MessagesEventBusDispatchEvent.Resume: {
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this.status = MessagesEventBusStatus.Ready
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this.resetPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Background: {
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this.status = MessagesEventBusStatus.Backgrounded
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this.resetPoll()
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break
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}
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case MessagesEventBusDispatchEvent.Error: {
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this.status = MessagesEventBusStatus.Error
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this.error = action.payload
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this.stopPoll()
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this.emitter.emit('error', action.payload)
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break
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}
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}
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break
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}
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case MessagesEventBusStatus.Error: {
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switch (action.event) {
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case MessagesEventBusDispatchEvent.Resume: {
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// basically reset
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this.status = MessagesEventBusStatus.Initializing
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this.error = undefined
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this.latestRev = undefined
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this.init()
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break
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}
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}
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break
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}
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default:
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break
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}
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logger.debug(
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`${LOGGER_CONTEXT}: initialize latest rev`,
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{},
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`${LOGGER_CONTEXT}: dispatch '${action.event}'`,
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{
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id: this.id,
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prev: prevStatus,
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next: this.status,
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},
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logger.DebugContext.convo,
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)
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}
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const response = await this.agent.api.chat.bsky.convo.listConvos(
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{
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limit: 1,
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},
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{
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headers: {
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Authorization: this.__tempFromUserDid,
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private async init() {
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logger.debug(`${LOGGER_CONTEXT}: init`, {}, logger.DebugContext.convo)
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try {
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const response = await this.agent.api.chat.bsky.convo.listConvos(
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{
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limit: 1,
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},
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},
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)
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{
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headers: {
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Authorization: this.__tempFromUserDid,
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},
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},
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)
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// throw new Error('UNCOMMENT TO TEST INIT FAILURE')
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const {convos} = response.data
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||||
const {convos} = response.data
|
||||
|
||||
for (const convo of convos) {
|
||||
if (convo.rev > (this.latestRev = this.latestRev || convo.rev)) {
|
||||
this.latestRev = convo.rev
|
||||
for (const convo of convos) {
|
||||
if (convo.rev > (this.latestRev = this.latestRev || convo.rev)) {
|
||||
this.latestRev = convo.rev
|
||||
}
|
||||
}
|
||||
|
||||
this.dispatch({event: MessagesEventBusDispatchEvent.Ready})
|
||||
} catch (e: any) {
|
||||
logger.error(e, {
|
||||
context: `${LOGGER_CONTEXT}: init failed`,
|
||||
})
|
||||
|
||||
this.dispatch({
|
||||
event: MessagesEventBusDispatchEvent.Error,
|
||||
payload: {
|
||||
exception: e,
|
||||
code: MessagesEventBusErrorCode.InitFailed,
|
||||
retry: () => {
|
||||
this.dispatch({event: MessagesEventBusDispatchEvent.Resume})
|
||||
},
|
||||
},
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -430,6 +361,8 @@ export class MessagesEventBus {
|
|||
},
|
||||
)
|
||||
|
||||
// throw new Error('UNCOMMENT TO TEST POLL FAILURE')
|
||||
|
||||
const {logs: events} = response.data
|
||||
|
||||
let needsEmit = false
|
||||
|
|
@ -473,7 +406,7 @@ export class MessagesEventBus {
|
|||
exception: e,
|
||||
code: MessagesEventBusErrorCode.PollFailed,
|
||||
retry: () => {
|
||||
this.init()
|
||||
this.dispatch({event: MessagesEventBusDispatchEvent.Resume})
|
||||
},
|
||||
},
|
||||
})
|
||||
|
|
|
|||
|
|
@ -0,0 +1 @@
|
|||
export const DEFAULT_POLL_INTERVAL = 20e3
|
||||
|
|
@ -5,13 +5,13 @@ import {BskyAgent} from '@atproto-labs/api'
|
|||
import {useGate} from '#/lib/statsig/statsig'
|
||||
import {isWeb} from '#/platform/detection'
|
||||
import {MessagesEventBus} from '#/state/messages/events/agent'
|
||||
import {MessagesEventBusState} from '#/state/messages/events/types'
|
||||
import {useAgent} from '#/state/session'
|
||||
import {useDmServiceUrlStorage} from '#/screens/Messages/Temp/useDmServiceUrlStorage'
|
||||
import {IS_DEV} from '#/env'
|
||||
|
||||
const MessagesEventBusContext =
|
||||
React.createContext<MessagesEventBusState | null>(null)
|
||||
const MessagesEventBusContext = React.createContext<MessagesEventBus | null>(
|
||||
null,
|
||||
)
|
||||
|
||||
export function useMessagesEventBus() {
|
||||
const ctx = React.useContext(MessagesEventBusContext)
|
||||
|
|
@ -37,12 +37,13 @@ export function Temp_MessagesEventBusProvider({
|
|||
__tempFromUserDid: getAgent().session?.did!,
|
||||
}),
|
||||
)
|
||||
const service = React.useSyncExternalStore(bus.subscribe, bus.getSnapshot)
|
||||
|
||||
if (isWeb && IS_DEV) {
|
||||
// @ts-ignore
|
||||
window.messagesEventBus = service
|
||||
}
|
||||
React.useEffect(() => {
|
||||
if (isWeb && IS_DEV) {
|
||||
// @ts-ignore
|
||||
window.bus = bus
|
||||
}
|
||||
}, [bus])
|
||||
|
||||
React.useEffect(() => {
|
||||
const handleAppStateChange = (nextAppState: string) => {
|
||||
|
|
@ -61,7 +62,7 @@ export function Temp_MessagesEventBusProvider({
|
|||
}, [bus])
|
||||
|
||||
return (
|
||||
<MessagesEventBusContext.Provider value={service}>
|
||||
<MessagesEventBusContext.Provider value={bus}>
|
||||
{children}
|
||||
</MessagesEventBusContext.Provider>
|
||||
)
|
||||
|
|
|
|||
|
|
@ -6,7 +6,6 @@ export type MessagesEventBusParams = {
|
|||
}
|
||||
|
||||
export enum MessagesEventBusStatus {
|
||||
Uninitialized = 'uninitialized',
|
||||
Initializing = 'initializing',
|
||||
Ready = 'ready',
|
||||
Error = 'error',
|
||||
|
|
@ -15,12 +14,12 @@ export enum MessagesEventBusStatus {
|
|||
}
|
||||
|
||||
export enum MessagesEventBusDispatchEvent {
|
||||
Init = 'init',
|
||||
Ready = 'ready',
|
||||
Error = 'error',
|
||||
Background = 'background',
|
||||
Suspend = 'suspend',
|
||||
Resume = 'resume',
|
||||
UpdatePoll = 'updatePoll',
|
||||
}
|
||||
|
||||
export enum MessagesEventBusErrorCode {
|
||||
|
|
@ -36,9 +35,6 @@ export type MessagesEventBusError = {
|
|||
}
|
||||
|
||||
export type MessagesEventBusDispatch =
|
||||
| {
|
||||
event: MessagesEventBusDispatchEvent.Init
|
||||
}
|
||||
| {
|
||||
event: MessagesEventBusDispatchEvent.Ready
|
||||
}
|
||||
|
|
@ -55,59 +51,22 @@ export type MessagesEventBusDispatch =
|
|||
event: MessagesEventBusDispatchEvent.Error
|
||||
payload: MessagesEventBusError
|
||||
}
|
||||
| {
|
||||
event: MessagesEventBusDispatchEvent.UpdatePoll
|
||||
}
|
||||
|
||||
export type TrailHandler = (
|
||||
events: ChatBskyConvoGetLog.OutputSchema['logs'],
|
||||
) => void
|
||||
|
||||
export type RequestPollIntervalHandler = (interval: number) => () => void
|
||||
export type OnConnectHandler = (handler: () => void) => () => void
|
||||
export type OnDisconnectHandler = (
|
||||
handler: (error?: MessagesEventBusError) => void,
|
||||
) => () => void
|
||||
|
||||
export type MessagesEventBusState =
|
||||
| {
|
||||
status: MessagesEventBusStatus.Uninitialized
|
||||
rev: undefined
|
||||
error: undefined
|
||||
requestPollInterval: RequestPollIntervalHandler
|
||||
trail: (handler: TrailHandler) => () => void
|
||||
trailConvo: (convoId: string, handler: TrailHandler) => () => void
|
||||
}
|
||||
| {
|
||||
status: MessagesEventBusStatus.Initializing
|
||||
rev: undefined
|
||||
error: undefined
|
||||
requestPollInterval: RequestPollIntervalHandler
|
||||
trail: (handler: TrailHandler) => () => void
|
||||
trailConvo: (convoId: string, handler: TrailHandler) => () => void
|
||||
}
|
||||
| {
|
||||
status: MessagesEventBusStatus.Ready
|
||||
rev: string
|
||||
error: undefined
|
||||
requestPollInterval: RequestPollIntervalHandler
|
||||
trail: (handler: TrailHandler) => () => void
|
||||
trailConvo: (convoId: string, handler: TrailHandler) => () => void
|
||||
}
|
||||
| {
|
||||
status: MessagesEventBusStatus.Backgrounded
|
||||
rev: string | undefined
|
||||
error: undefined
|
||||
requestPollInterval: RequestPollIntervalHandler
|
||||
trail: (handler: TrailHandler) => () => void
|
||||
trailConvo: (convoId: string, handler: TrailHandler) => () => void
|
||||
}
|
||||
| {
|
||||
status: MessagesEventBusStatus.Suspended
|
||||
rev: string | undefined
|
||||
error: undefined
|
||||
requestPollInterval: RequestPollIntervalHandler
|
||||
trail: (handler: TrailHandler) => () => void
|
||||
trailConvo: (convoId: string, handler: TrailHandler) => () => void
|
||||
}
|
||||
| {
|
||||
status: MessagesEventBusStatus.Error
|
||||
rev: string | undefined
|
||||
error: MessagesEventBusError
|
||||
requestPollInterval: RequestPollIntervalHandler
|
||||
trail: (handler: TrailHandler) => () => void
|
||||
trailConvo: (convoId: string, handler: TrailHandler) => () => void
|
||||
}
|
||||
export type MessagesEventBusEvents = {
|
||||
events: [ChatBskyConvoGetLog.OutputSchema['logs']]
|
||||
connect: undefined
|
||||
error: [MessagesEventBusError] | undefined
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue