yonote/yjs
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implemnt mutual exclude pattern directly in Persistence.js

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This commit is contained in:
Kevin Jahns
2018-01-30 20:11:59 -08:00
parent bbd3317d62
commit a3ab42c157
2 changed files with 928 additions and 13 deletions
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29
src/Persistence.js
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@@ -17,13 +17,13 @@ export default class AbstractPersistence {
constructor (opts) {
this.opts = opts
this.ys = new Map()
this.mutualExclude = createMutualExclude()
}
_init (y) {
let cnf = this.ys.get(y)
if (cnf === undefined) {
cnf = getFreshCnf()
cnf.mutualExclude = createMutualExclude()
this.ys.set(y, cnf)
return this.init(y).then(() => {
y.on('afterTransaction', (y, transaction) => {
@@ -85,7 +85,7 @@ export default class AbstractPersistence {
saveStruct (y, struct) {
let cnf = this.ys.get(y)
if (cnf !== undefined) {
this.mutualExclude(function () {
cnf.mutualExclude(function () {
struct._toBinary(cnf.buffer)
cnf.len++
})
@@ -94,19 +94,22 @@ export default class AbstractPersistence {
/* overwrite */
retrieve (y, model, updates) {
this.mutualExclude(function () {
y.transact(function () {
if (model != null) {
fromBinary(y, new BinaryDecoder(new Uint8Array(model)))
}
if (updates != null) {
for (let i = 0; i < updates.length; i++) {
integrateRemoteStructs(y, new BinaryDecoder(new Uint8Array(updates[i])))
let cnf = this.ys.get(y)
if (cnf !== undefined) {
cnf.mutualExclude(function () {
y.transact(function () {
if (model != null) {
fromBinary(y, new BinaryDecoder(new Uint8Array(model)))
}
}
if (updates != null) {
for (let i = 0; i < updates.length; i++) {
integrateRemoteStructs(y, new BinaryDecoder(new Uint8Array(updates[i])))
}
}
})
y.emit('persistenceReady')
})
y.emit('persistenceReady')
})
}
}
/* overwrite */