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implement sync event

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This commit is contained in:
Kevin Jahns 2019-09-18 17:15:44 +02:00
parent 38e74a764f
commit f4a61ef474
1 changed files with 26 additions and 4 deletions
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30
src/y-websocket.js
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@ -39,16 +39,20 @@ const permissionDeniedHandler = (provider, reason) => console.warn(`Permission d
/**
* @param {WebsocketProvider} provider
* @param {Uint8Array} buf
* @param {boolean} emitSynced
* @return {encoding.Encoder}
*/
const readMessage = (provider, buf) => {
const readMessage = (provider, buf, emitSynced) => {
const decoder = decoding.createDecoder(buf)
const encoder = encoding.createEncoder()
const messageType = decoding.readVarUint(decoder)
switch (messageType) {
case messageSync:
encoding.writeVarUint(encoder, messageSync)
syncProtocol.readSyncMessage(decoder, encoder, provider.doc, provider)
const messageType = syncProtocol.readSyncMessage(decoder, encoder, provider.doc, provider)
if (emitSynced && messageType === syncProtocol.messageYjsSyncStep2 && !provider.synced) {
provider.synced = true
}
break
case messageQueryAwareness:
encoding.writeVarUint(encoder, messageAwareness)
@ -77,9 +81,10 @@ const setupWS = provider => {
provider.ws = websocket
provider.wsconnecting = true
provider.wsconnected = false
provider.synced = false
websocket.onmessage = event => {
provider.wsLastMessageReceived = time.getUnixTime()
const encoder = readMessage(provider, new Uint8Array(event.data))
const encoder = readMessage(provider, new Uint8Array(event.data), true)
if (encoding.length(encoder) > 1) {
websocket.send(encoding.toUint8Array(encoder))
}
@ -89,6 +94,7 @@ const setupWS = provider => {
provider.wsconnecting = false
if (provider.wsconnected) {
provider.wsconnected = false
provider.synced = false
// update awareness (all users left)
awarenessProtocol.removeAwarenessStates(provider.awareness, Array.from(provider.awareness.getStates().keys()), provider)
provider.emit('status', [{
@ -183,6 +189,10 @@ export class WebsocketProvider extends Observable {
this.bcconnected = false
this.wsUnsuccessfulReconnects = 0
this.mux = mutex.createMutex()
/**
* @type {boolean}
*/
this._synced = false
/**
* @type {WebSocket?}
*/
@ -198,7 +208,7 @@ export class WebsocketProvider extends Observable {
*/
this._bcSubscriber = data => {
this.mux(() => {
const encoder = readMessage(this, new Uint8Array(data))
const encoder = readMessage(this, new Uint8Array(data), false)
if (encoding.length(encoder) > 1) {
bc.publish(this.url, encoding.toUint8Array(encoder))
}
@ -244,6 +254,18 @@ export class WebsocketProvider extends Observable {
})
this.connect()
}
/**
* @type {boolean}
*/
get synced () {
return this._synced
}
set synced (state) {
if (this._synced !== state) {
this._synced = state
this.emit('sync', [state])
}
}
destroy () {
clearInterval(this._checkInterval)
this.disconnect()