aboutsummaryrefslogtreecommitdiff
path: root/ext/fg/js/frontend-api-sender.js
diff options
context:
space:
mode:
Diffstat (limited to 'ext/fg/js/frontend-api-sender.js')
-rw-r--r--ext/fg/js/frontend-api-sender.js128
1 files changed, 0 insertions, 128 deletions
diff --git a/ext/fg/js/frontend-api-sender.js b/ext/fg/js/frontend-api-sender.js
deleted file mode 100644
index 4dcde638..00000000
--- a/ext/fg/js/frontend-api-sender.js
+++ /dev/null
@@ -1,128 +0,0 @@
-/*
- * Copyright (C) 2019-2020 Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- */
-
-
-class FrontendApiSender {
- constructor(target) {
- this._target = target;
- this._senderId = yomichan.generateId(16);
- this._ackTimeout = 3000; // 3 seconds
- this._responseTimeout = 10000; // 10 seconds
- this._callbacks = new Map();
- this._disconnected = false;
- this._nextId = 0;
- this._port = null;
- }
-
- invoke(action, params) {
- if (this._disconnected) {
- // attempt to reconnect the next time
- this._disconnected = false;
- return Promise.reject(new Error('Disconnected'));
- }
-
- if (this._port === null) {
- this._createPort();
- }
-
- const id = `${this._nextId}`;
- ++this._nextId;
-
- return new Promise((resolve, reject) => {
- const info = {id, resolve, reject, ack: false, timer: null};
- this._callbacks.set(id, info);
- info.timer = setTimeout(() => this._onError(id, 'Timeout (ack)'), this._ackTimeout);
-
- this._port.postMessage({id, action, params, target: this._target, senderId: this._senderId});
- });
- }
-
- _createPort() {
- this._port = chrome.runtime.connect(null, {name: 'backend-api-forwarder'});
- this._port.onDisconnect.addListener(this._onDisconnect.bind(this));
- this._port.onMessage.addListener(this._onMessage.bind(this));
- }
-
- _onMessage({type, id, data, senderId}) {
- if (senderId !== this._senderId) { return; }
- switch (type) {
- case 'ack':
- this._onAck(id);
- break;
- case 'result':
- this._onResult(id, data);
- break;
- }
- }
-
- _onDisconnect() {
- this._disconnected = true;
- this._port = null;
-
- for (const id of this._callbacks.keys()) {
- this._onError(id, 'Disconnected');
- }
- }
-
- _onAck(id) {
- const info = this._callbacks.get(id);
- if (typeof info === 'undefined') {
- yomichan.logWarning(new Error(`ID ${id} not found for ack`));
- return;
- }
-
- if (info.ack) {
- yomichan.logWarning(new Error(`Request ${id} already ack'd`));
- return;
- }
-
- info.ack = true;
- clearTimeout(info.timer);
- info.timer = setTimeout(() => this._onError(id, 'Timeout (response)'), this._responseTimeout);
- }
-
- _onResult(id, data) {
- const info = this._callbacks.get(id);
- if (typeof info === 'undefined') {
- yomichan.logWarning(new Error(`ID ${id} not found`));
- return;
- }
-
- if (!info.ack) {
- yomichan.logWarning(new Error(`Request ${id} not ack'd`));
- return;
- }
-
- this._callbacks.delete(id);
- clearTimeout(info.timer);
- info.timer = null;
-
- if (typeof data.error !== 'undefined') {
- info.reject(jsonToError(data.error));
- } else {
- info.resolve(data.result);
- }
- }
-
- _onError(id, reason) {
- const info = this._callbacks.get(id);
- if (typeof info === 'undefined') { return; }
- this._callbacks.delete(id);
- info.timer = null;
- info.reject(new Error(reason));
- }
-}