626 lines
22 KiB
Vue
626 lines
22 KiB
Vue
<template>
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<div></div>
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</template>
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<script>
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//-----------------------------------------------------------------------------
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import Vue from 'vue';
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import Component from 'vue-class-component';
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import _ from 'lodash';
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import bookManager from '../share/bookManager';
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import readerApi from '../../../api/reader';
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import * as utils from '../../../share/utils';
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import * as cryptoUtils from '../../../share/cryptoUtils';
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export default @Component({
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watch: {
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serverSyncEnabled: function() {
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this.serverSyncEnabledChanged();
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},
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serverStorageKey: function() {
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this.serverStorageKeyChanged(true);
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},
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settings: function() {
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this.debouncedSaveSettings();
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},
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profiles: function() {
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this.saveProfiles();
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},
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currentProfile: function() {
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this.currentProfileChanged(true);
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},
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},
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})
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class ServerStorage extends Vue {
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created() {
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this.inited = false;
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this.keyInited = false;
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this.commit = this.$store.commit;
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this.prevServerStorageKey = null;
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this.$root.$on('generateNewServerStorageKey', () => {this.generateNewServerStorageKey()});
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this.debouncedSaveSettings = _.debounce(() => {
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this.saveSettings();
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}, 500);
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this.debouncedSaveRecent = _.debounce((itemKey) => {
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this.saveRecent(itemKey);
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}, 1000);
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this.debouncedNotifySuccess = _.debounce(() => {
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this.success('Данные синхронизированы с сервером');
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}, 1000);
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this.oldProfiles = {};
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this.oldSettings = {};
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}
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async init() {
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try {
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if (!this.serverStorageKey) {
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//генерируем новый ключ
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await this.generateNewServerStorageKey();
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} else {
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await this.serverStorageKeyChanged();
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}
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bookManager.addEventListener(this.bookManagerEvent);
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} finally {
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this.inited = true;
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}
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}
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async bookManagerEvent(eventName, itemKey) {
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if (!this.serverSyncEnabled)
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return;
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if (eventName == 'recent-changed') {
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if (itemKey) {
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if (!this.recentDeltaInited) {
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this.warning('Функции сохранения на сервер пока недоступны');
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return;
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}
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if (!this.recentDelta)
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this.recentDelta = {};
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this.recentDelta[itemKey] = _.cloneDeep(bookManager.recent[itemKey]);
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this.debouncedSaveRecent(itemKey);
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}
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}
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}
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async generateNewServerStorageKey() {
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const key = utils.toBase58(utils.randomArray(32));
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this.commit('reader/setServerStorageKey', key);
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await this.serverStorageKeyChanged(true);
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}
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async serverSyncEnabledChanged() {
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if (this.serverSyncEnabled) {
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this.prevServerStorageKey = null;
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if (!this.serverStorageKey) {
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//генерируем новый ключ
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await this.generateNewServerStorageKey();
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} else {
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await this.serverStorageKeyChanged(true);
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}
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}
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}
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async serverStorageKeyChanged(force) {
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if (this.prevServerStorageKey != this.serverStorageKey) {
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this.prevServerStorageKey = this.serverStorageKey;
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this.hashedStorageKey = utils.toBase58(cryptoUtils.sha256(this.serverStorageKey));
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this.keyInited = true;
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await this.loadProfiles(force);
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this.checkCurrentProfile();
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await this.currentProfileChanged(force);
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await this.loadRecent();
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if (force)
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await this.saveRecent();
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}
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}
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async currentProfileChanged(force) {
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if (!this.currentProfile)
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return;
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await this.loadSettings(force);
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}
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get serverSyncEnabled() {
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return this.$store.state.reader.serverSyncEnabled;
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}
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get settings() {
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return this.$store.state.reader.settings;
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}
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get settingsRev() {
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return this.$store.state.reader.settingsRev;
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}
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get serverStorageKey() {
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return this.$store.state.reader.serverStorageKey;
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}
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get profiles() {
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return this.$store.state.reader.profiles;
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}
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get profilesRev() {
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return this.$store.state.reader.profilesRev;
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}
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get currentProfile() {
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return this.$store.state.reader.currentProfile;
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}
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get showServerStorageMessages() {
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return this.settings.showServerStorageMessages;
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}
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checkCurrentProfile() {
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if (!this.profiles[this.currentProfile]) {
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this.commit('reader/setCurrentProfile', '');
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}
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}
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success(message) {
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if (this.showServerStorageMessages)
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this.$notify.success({message});
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}
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warning(message) {
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if (this.showServerStorageMessages)
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this.$notify.warning({message});
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}
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error(message) {
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if (this.showServerStorageMessages)
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this.$notify.error({message});
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}
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async loadSettings(force = false, doNotifySuccess = true) {
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if (!this.keyInited || !this.serverSyncEnabled || !this.currentProfile)
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return;
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const setsId = `settings-${this.currentProfile}`;
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const oldRev = this.settingsRev[setsId] || 0;
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//проверим ревизию на сервере
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if (!force) {
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try {
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const revs = await this.storageCheck({[setsId]: {}});
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if (revs.state == 'success' && revs.items[setsId].rev == oldRev) {
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return;
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}
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} catch(e) {
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this.error(`Ошибка соединения с сервером: ${e.message}`);
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return;
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}
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}
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let sets = null;
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try {
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sets = await this.storageGet({[setsId]: {}});
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} catch(e) {
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this.error(`Ошибка соединения с сервером: ${e.message}`);
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return;
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}
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if (sets.state == 'success') {
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sets = sets.items[setsId];
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if (sets.rev == 0)
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sets.data = {};
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this.oldSettings = _.cloneDeep(sets.data);
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this.commit('reader/setSettings', sets.data);
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this.commit('reader/setSettingsRev', {[setsId]: sets.rev});
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if (doNotifySuccess)
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this.debouncedNotifySuccess();
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} else {
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this.warning(`Неверный ответ сервера: ${sets.state}`);
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}
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}
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async saveSettings() {
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if (!this.keyInited || !this.serverSyncEnabled || !this.currentProfile || this.savingSettings)
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return;
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const diff = utils.getObjDiff(this.oldSettings, this.settings);
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if (utils.isEmptyObjDiff(diff))
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return;
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this.savingSettings = true;
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try {
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const setsId = `settings-${this.currentProfile}`;
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let result = {state: ''};
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const oldRev = this.settingsRev[setsId] || 0;
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try {
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result = await this.storageSet({[setsId]: {rev: oldRev + 1, data: this.settings}});
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} catch(e) {
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this.error(`Ошибка соединения с сервером (${e.message}). Данные не сохранены и могут быть перезаписаны.`);
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}
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if (result.state == 'reject') {
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await this.loadSettings(true, false);
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this.warning(`Последние изменения отменены. Данные синхронизированы с сервером.`);
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} else if (result.state == 'success') {
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this.oldSettings = _.cloneDeep(this.settings);
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this.commit('reader/setSettingsRev', {[setsId]: this.settingsRev[setsId] + 1});
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}
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} finally {
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this.savingSettings = false;
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}
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}
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async loadProfiles(force = false, doNotifySuccess = true) {
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if (!this.keyInited || !this.serverSyncEnabled)
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return;
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const oldRev = this.profilesRev;
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//проверим ревизию на сервере
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if (!force) {
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try {
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const revs = await this.storageCheck({profiles: {}});
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if (revs.state == 'success' && revs.items.profiles.rev == oldRev) {
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return;
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}
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} catch(e) {
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this.error(`Ошибка соединения с сервером: ${e.message}`);
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return;
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}
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}
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let prof = null;
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try {
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prof = await this.storageGet({profiles: {}});
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} catch(e) {
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this.error(`Ошибка соединения с сервером: ${e.message}`);
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return;
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}
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if (prof.state == 'success') {
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prof = prof.items.profiles;
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if (prof.rev == 0)
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prof.data = {};
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this.oldProfiles = _.cloneDeep(prof.data);
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this.commit('reader/setProfiles', prof.data);
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this.commit('reader/setProfilesRev', prof.rev);
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this.checkCurrentProfile();
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if (doNotifySuccess)
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this.debouncedNotifySuccess();
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} else {
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this.warning(`Неверный ответ сервера: ${prof.state}`);
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}
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}
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async saveProfiles() {
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if (!this.keyInited || !this.serverSyncEnabled || this.savingProfiles)
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return;
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const diff = utils.getObjDiff(this.oldProfiles, this.profiles);
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if (utils.isEmptyObjDiff(diff))
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return;
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//обнуляются профили во время разработки при hotReload, подстраховка
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if (!this.$store.state.reader.allowProfilesSave) {
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console.error('Сохранение профилей не санкционировано');
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return;
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}
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this.savingProfiles = true;
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try {
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let result = {state: ''};
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try {
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result = await this.storageSet({profiles: {rev: this.profilesRev + 1, data: this.profiles}});
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} catch(e) {
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this.error(`Ошибка соединения с сервером (${e.message}). Данные не сохранены и могут быть перезаписаны.`);
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}
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if (result.state == 'reject') {
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await this.loadProfiles(true, false);
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this.warning(`Последние изменения отменены. Данные синхронизированы с сервером.`);
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} else if (result.state == 'success') {
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this.oldProfiles = _.cloneDeep(this.profiles);
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this.commit('reader/setProfilesRev', this.profilesRev + 1);
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}
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} finally {
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this.savingProfiles = false;
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}
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}
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async initRecentDelta() {
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let recentDelta = null;
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try {
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recentDelta = await this.storageGet({recentDelta: {}});
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} catch(e) {
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this.error(`Ошибка соединения с сервером: ${e.message}`);
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return;
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}
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if (recentDelta.state == 'success') {
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recentDelta = recentDelta.items.recentDelta;
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if (recentDelta.rev == 0)
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recentDelta.data = {};
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this.recentDelta = recentDelta.data;
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this.recentDeltaInited = true;
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} else {
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this.warning(`Неверный ответ сервера: ${recentDelta.state}`);
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}
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}
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async loadRecent(doNotifySuccess = true) {
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if (!this.keyInited || !this.serverSyncEnabled)
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return;
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const oldRecentRev = bookManager.recentRev;
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const oldRecentDeltaRev = bookManager.recentDeltaRev;
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//проверим ревизию на сервере
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let revs = null;
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try {
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revs = await this.storageCheck({recent: {}, recentDelta: {}});
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if (revs.state == 'success' && revs.items.recent.rev == oldRecentRev &&
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revs.items.recentDelta.rev == oldRecentDeltaRev) {
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if (!this.recentDeltaInited)
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await this.initRecentDelta();
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return;
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}
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} catch(e) {
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this.error(`Ошибка соединения с сервером: ${e.message}`);
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return;
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}
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let recent = null;
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try {
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if (revs.items.recent.rev != oldRecentRev) {
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recent = await this.storageGet({recent: {}, recentDelta: {}});
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} else {
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recent = await this.storageGet({recentDelta: {}});
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recent.items.recent = {data: _.cloneDeep(bookManager.recent), rev: oldRecentRev};
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}
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} catch(e) {
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this.error(`Ошибка соединения с сервером: ${e.message}`);
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return;
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}
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if (recent.state == 'success') {
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let recentDelta = recent.items.recentDelta;
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recent = recent.items.recent;
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if (recent.rev == 0)
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recent.data = {};
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let newRecent = {};
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if (recentDelta && recentDelta.data) {
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if (recentDelta.data.diff) {
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newRecent = recent.data;
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const key = recentDelta.data.diff.key;
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if (newRecent[key])
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newRecent[key] = utils.applyObjDiff(newRecent[key], recentDelta.data.diff);
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} else {
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newRecent = Object.assign(recent.data, recentDelta.data);
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}
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this.recentDelta = recentDelta.data;
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} else {
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newRecent = recent.data;
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this.recentDelta = {};
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}
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this.recentDeltaInited = true;
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if (!bookManager.loaded) {
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this.warning('Ожидание загрузки списка книг перед синхронизацией');
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while (!bookManager.loaded) await utils.sleep(100);
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}
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await bookManager.setRecent(newRecent);
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await bookManager.setRecentRev(recent.rev);
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await bookManager.setRecentDeltaRev(recentDelta.rev);
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} else {
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this.warning(`Неверный ответ сервера: ${recent.state}`);
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}
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if (doNotifySuccess)
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this.debouncedNotifySuccess();
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}
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async saveRecent(itemKey, recurse) {
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if (!this.keyInited || !this.serverSyncEnabled || this.savingRecent)
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return;
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const bm = bookManager;
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//вычисление критерия сохранения целиком
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if (!this.sameKeyCount)
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this.sameKeyCount = 0;
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if (this.prevItemKey == itemKey) {
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this.sameKeyCount++;
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} else {
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this.sameKeyCount = 0;
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}
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const l = Object.keys(this.recentDelta).length - (1*(!!this.recentDelta.diff));
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this.makeDeltaDiff = (l == 1 && this.prevItemKey == itemKey ? this.makeDeltaDiff : false);
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const forceSaveRecent = l > 10 || (this.sameKeyCount > 5 && (l > 1)) || (l == 1 && this.sameKeyCount > 10 && !this.makeDeltaDiff);
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this.sameKeyCount = (!forceSaveRecent ? this.sameKeyCount : 0);
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this.prevItemKey = itemKey;
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//дифф от дельты для уменьшения размера передаваемых данных в частном случае
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/*if (this.makeDeltaDiff) {
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this.recentDelta.diff = utils.getObjDiff(this.prevSavedItem, bm.recent[itemKey]);
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this.recentDelta.diff.key = itemKey;
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delete this.recentDelta[itemKey];
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} else if (this.recentDelta.diff) {
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const key = this.recentDelta.diff.key;
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if (!this.prevSavedItem && bm.recent[key])
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this.prevSavedItem = _.cloneDeep(bm.recent[key]);
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if (this.prevSavedItem) {
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this.recentDelta[key] = utils.applyObjDiff(this.prevSavedItem, this.recentDelta.diff);
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}
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delete this.recentDelta.diff;
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}*/
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//сохранение
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this.savingRecent = true;
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try {
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if (forceSaveRecent) {//сохраняем recent целиком
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let result = {state: ''};
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try {
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result = await this.storageSet({recent: {rev: bm.recentRev + 1, data: bm.recent}, recentDelta: {rev: bm.recentDeltaRev + 1, data: {}}});
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} catch(e) {
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this.error(`Ошибка соединения с сервером (${e.message}). Данные не сохранены и могут быть перезаписаны.`);
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}
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if (result.state == 'reject') {
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await this.loadRecent(false);
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this.warning(`Последние изменения отменены. Данные синхронизированы с сервером.`);
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if (!recurse) {
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this.savingRecent = false;
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this.recentDelta[itemKey] = _.cloneDeep(bm.recent[itemKey]);
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this.saveRecent(itemKey, true);
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return;
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}
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} else if (result.state == 'success') {
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this.makeDeltaDiff = true;
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this.prevSavedItem = _.cloneDeep(bm.recent[itemKey]);
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this.recentDelta = {};
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await bm.setRecentRev(bm.recentRev + 1);
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await bm.setRecentDeltaRev(bm.recentDeltaRev + 1);
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}
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} else {//сохраняем только дифф
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let result = {state: ''};
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try {
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result = await this.storageSet({recentDelta: {rev: bm.recentDeltaRev + 1, data: this.recentDelta}});
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} catch(e) {
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this.error(`Ошибка соединения с сервером (${e.message}). Данные не сохранены и могут быть перезаписаны.`);
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}
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if (result.state == 'reject') {
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await this.loadRecent(false);
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this.warning(`Последние изменения отменены. Данные синхронизированы с сервером.`);
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if (!recurse) {
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this.savingRecent = false;
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this.recentDelta[itemKey] = _.cloneDeep(bm.recent[itemKey]);
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this.saveRecent(itemKey, true);
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return;
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}
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} else if (result.state == 'success') {
|
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await bm.setRecentDeltaRev(bm.recentDeltaRev + 1);
|
||
}
|
||
}
|
||
} finally {
|
||
this.savingRecent = false;
|
||
}
|
||
}
|
||
|
||
async storageCheck(items) {
|
||
return await this.storageApi('check', items);
|
||
}
|
||
|
||
async storageGet(items) {
|
||
return await this.storageApi('get', items);
|
||
}
|
||
|
||
async storageSet(items, force) {
|
||
return await this.storageApi('set', items, force);
|
||
}
|
||
|
||
async storageApi(action, items, force) {
|
||
const request = {action, items};
|
||
if (force)
|
||
request.force = true;
|
||
const encodedRequest = await this.encodeStorageItems(request);
|
||
return await this.decodeStorageItems(await readerApi.storage(encodedRequest));
|
||
}
|
||
|
||
async encodeStorageItems(request) {
|
||
if (!this.hashedStorageKey)
|
||
throw new Error('hashedStorageKey is empty');
|
||
|
||
if (!_.isObject(request.items))
|
||
throw new Error('items is not an object');
|
||
|
||
let result = Object.assign({}, request);
|
||
let items = {};
|
||
for (const id of Object.keys(request.items)) {
|
||
const item = request.items[id];
|
||
if (request.action == 'set' && !_.isObject(item.data))
|
||
throw new Error('encodeStorageItems: data is not an object');
|
||
|
||
let encoded = Object.assign({}, item);
|
||
|
||
if (item.data) {
|
||
const comp = utils.pako.deflate(JSON.stringify(item.data), {level: 1});
|
||
let encrypted = null;
|
||
try {
|
||
encrypted = cryptoUtils.aesEncrypt(comp, this.serverStorageKey);
|
||
} catch (e) {
|
||
throw new Error('encrypt failed');
|
||
}
|
||
encoded.data = '1' + utils.toBase64(encrypted);
|
||
}
|
||
items[`${this.hashedStorageKey}.${utils.toBase58(id)}`] = encoded;
|
||
}
|
||
|
||
result.items = items;
|
||
return result;
|
||
}
|
||
|
||
async decodeStorageItems(response) {
|
||
if (!this.hashedStorageKey)
|
||
throw new Error('hashedStorageKey is empty');
|
||
|
||
let result = Object.assign({}, response);
|
||
let items = {};
|
||
if (response.items) {
|
||
if (!_.isObject(response.items))
|
||
throw new Error('items is not an object');
|
||
|
||
for (const id of Object.keys(response.items)) {
|
||
const item = response.items[id];
|
||
let decoded = Object.assign({}, item);
|
||
if (item.data) {
|
||
if (!_.isString(item.data) || !item.data.length)
|
||
throw new Error('decodeStorageItems: data is not a string');
|
||
if (item.data[0] !== '1')
|
||
throw new Error('decodeStorageItems: unknown data format');
|
||
|
||
const a = utils.fromBase64(item.data.substr(1));
|
||
let decrypted = null;
|
||
try {
|
||
decrypted = cryptoUtils.aesDecrypt(a, this.serverStorageKey);
|
||
} catch (e) {
|
||
throw new Error('decrypt failed');
|
||
}
|
||
decoded.data = JSON.parse(utils.pako.inflate(decrypted, {to: 'string'}));
|
||
}
|
||
|
||
const ids = id.split('.');
|
||
if (!(ids.length == 2) || !(ids[0] == this.hashedStorageKey))
|
||
throw new Error(`decodeStorageItems: bad id - ${id}`);
|
||
items[utils.fromBase58(ids[1])] = decoded;
|
||
}
|
||
}
|
||
|
||
result.items = items;
|
||
return result;
|
||
}
|
||
}
|
||
//-----------------------------------------------------------------------------
|
||
</script>
|