add outbound group session storage

src/matrix/storage/common.js

@@ -26,6 +26,7 @@ export const STORE_NAMES = Object.freeze([
     "deviceIdentities",
     "olmSessions",
     "inboundGroupSessions",
+    "outboundGroupSessions",
 ]);
 
 export const STORE_MAP = Object.freeze(STORE_NAMES.reduce((nameMap, name) => {

src/matrix/storage/idb/Transaction.js

@@ -28,6 +28,7 @@ import {UserIdentityStore} from "./stores/UserIdentityStore.js";
 import {DeviceIdentityStore} from "./stores/DeviceIdentityStore.js";
 import {OlmSessionStore} from "./stores/OlmSessionStore.js";
 import {InboundGroupSessionStore} from "./stores/InboundGroupSessionStore.js";
+import {OutboundGroupSessionStore} from "./stores/OutboundGroupSessionStore.js";
 
 export class Transaction {
     constructor(txn, allowedStoreNames) {
@@ -100,7 +101,10 @@ export class Transaction {
     get inboundGroupSessions() {
         return this._store("inboundGroupSessions", idbStore => new InboundGroupSessionStore(idbStore));
     }
-
+    
+    get outboundGroupSessions() {
+        return this._store("outboundGroupSessions", idbStore => new OutboundGroupSessionStore(idbStore));
+    }
     complete() {
         return txnAsPromise(this._txn);
     }

src/matrix/storage/idb/schema.js

@@ -12,6 +12,7 @@ export const schema = [
     createIdentityStores,
     createOlmSessionStore,
     createInboundGroupSessionsStore,
+    createOutboundGroupSessionsStore,
 ];
 // TODO: how to deal with git merge conflicts of this array?
 
@@ -82,3 +83,9 @@ function createOlmSessionStore(db) {
 function createInboundGroupSessionsStore(db) {
     db.createObjectStore("inboundGroupSessions", {keyPath: "key"});
 }
+
+//v7
+function createOutboundGroupSessionsStore(db) {
+    db.createObjectStore("outboundGroupSessions", {keyPath: "roomId"});
+}
+

src/matrix/storage/idb/stores/OutboundGroupSessionStore.js

@@ -0,0 +1,29 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+export class OutboundGroupSessionStore {
+    constructor(store) {
+        this._store = store;
+    }
+
+    get(roomId) {
+        return this._store.get(roomId);
+    }
+
+    set(session) {
+        this._store.put(session);
+    }
+}