78 lines
2.5 KiB
TypeScript
78 lines
2.5 KiB
TypeScript
/*
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Copyright 2020 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import {Store} from "../Store";
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function encodeKey(senderKey: string, sessionId: string): string {
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return `${senderKey}|${sessionId}`;
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}
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function decodeKey(key: string): { senderKey: string, sessionId: string } {
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const [senderKey, sessionId] = key.split("|");
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return {senderKey, sessionId};
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}
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export type OlmSessionEntry = {
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session: string;
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sessionId: string;
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senderKey: string;
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lastUsed: number;
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}
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type OlmSessionStoredEntry = OlmSessionEntry & { key: string };
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export class OlmSessionStore {
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private _store: Store<OlmSessionStoredEntry>;
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constructor(store: Store<OlmSessionStoredEntry>) {
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this._store = store;
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}
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async getSessionIds(senderKey: string): Promise<string[]> {
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const sessionIds: string[] = [];
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const range = this._store.IDBKeyRange.lowerBound(encodeKey(senderKey, ""));
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await this._store.iterateKeys(range, key => {
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const decodedKey = decodeKey(key as string);
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// prevent running into the next room
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if (decodedKey.senderKey === senderKey) {
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sessionIds.push(decodedKey.sessionId);
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return false; // fetch more
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}
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return true; // done
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});
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return sessionIds;
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}
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getAll(senderKey: string): Promise<OlmSessionEntry[]> {
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const range = this._store.IDBKeyRange.lowerBound(encodeKey(senderKey, ""));
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return this._store.selectWhile(range, session => {
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return session.senderKey === senderKey;
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});
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}
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get(senderKey: string, sessionId: string): Promise<OlmSessionEntry | undefined> {
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return this._store.get(encodeKey(senderKey, sessionId));
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}
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set(session: OlmSessionEntry): void {
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(session as OlmSessionStoredEntry).key = encodeKey(session.senderKey, session.sessionId);
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this._store.put(session as OlmSessionStoredEntry);
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}
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remove(senderKey: string, sessionId: string): void {
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this._store.delete(encodeKey(senderKey, sessionId));
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}
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}
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