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only load 50 olm sessions at once

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This commit is contained in:
Bruno Windels 2020-09-08 18:30:06 +02:00
parent 10b5614fd9
commit 4ca5ff9b9f
1 changed files with 13 additions and 0 deletions
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13
src/matrix/e2ee/olm/Encryption.js
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@ -29,6 +29,9 @@ function findFirstSessionId(sessionIds) {
} }
const OTK_ALGORITHM = "signed_curve25519"; const OTK_ALGORITHM = "signed_curve25519";
// only encrypt this amount of olm messages at once otherwise we run out of wasm memory
// with all the sessions loaded at the same time
const MAX_BATCH_SIZE = 50;
export class Encryption { export class Encryption {
constructor({account, olm, olmUtil, ownUserId, storage, now, pickleKey, senderKeyLock}) { constructor({account, olm, olmUtil, ownUserId, storage, now, pickleKey, senderKeyLock}) {
@ -43,6 +46,16 @@ export class Encryption {
} }
async encrypt(type, content, devices, hsApi) { async encrypt(type, content, devices, hsApi) {
let messages = [];
for (let i = 0; i < devices.length ; i += MAX_BATCH_SIZE) {
const batchDevices = devices.slice(i, i + MAX_BATCH_SIZE);
const batchMessages = await this._encryptForMaxDevices(type, content, batchDevices, hsApi);
messages = messages.concat(batchMessages);
}
return messages;
}
async _encryptForMaxDevices(type, content, devices, hsApi) {
// TODO: see if we can only hold some of the locks until after the /keys/claim call (if needed) // TODO: see if we can only hold some of the locks until after the /keys/claim call (if needed)
// take a lock on all senderKeys so decryption and other calls to encrypt (should not happen) // take a lock on all senderKeys so decryption and other calls to encrypt (should not happen)
// don't modify the sessions at the same time // don't modify the sessions at the same time