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joplin/packages/lib/services/ResourceService.ts
2021-01-29 18:45:11 +00:00

209 lines
6.6 KiB
TypeScript

import NoteResource from '../models/NoteResource';
import BaseModel from '../BaseModel';
import BaseService from './BaseService';
import Setting from '../models/Setting';
import shim from '../shim';
import ItemChange from '../models/ItemChange';
import Note from '../models/Note';
import Resource from '../models/Resource';
import SearchEngine from './searchengine/SearchEngine';
import ItemChangeUtils from './ItemChangeUtils';
import time from '../time';
const { sprintf } = require('sprintf-js');
export default class ResourceService extends BaseService {
public static isRunningInBackground_: boolean = false;
private isIndexing_: boolean = false;
private maintenanceCalls_: boolean[] = [];
private maintenanceTimer1_: any = null;
private maintenanceTimer2_: any = null;
public async indexNoteResources() {
this.logger().info('ResourceService::indexNoteResources: Start');
if (this.isIndexing_) {
this.logger().info('ResourceService::indexNoteResources: Already indexing - waiting for it to finish');
await time.waitTillCondition(() => !this.isIndexing_);
return;
}
this.isIndexing_ = true;
try {
await ItemChange.waitForAllSaved();
let foundNoteWithEncryption = false;
while (true) {
const changes = await ItemChange.modelSelectAll(`
SELECT id, item_id, type
FROM item_changes
WHERE item_type = ?
AND id > ?
ORDER BY id ASC
LIMIT 10
`, [BaseModel.TYPE_NOTE, Setting.value('resourceService.lastProcessedChangeId')]
);
if (!changes.length) break;
const noteIds = changes.map((a: any) => a.item_id);
const notes = await Note.modelSelectAll(`SELECT id, title, body, encryption_applied FROM notes WHERE id IN ("${noteIds.join('","')}")`);
const noteById = (noteId: string) => {
for (let i = 0; i < notes.length; i++) {
if (notes[i].id === noteId) return notes[i];
}
// The note may have been deleted since the change was recorded. For example in this case:
// - Note created (Some Change object is recorded)
// - Note is deleted
// - ResourceService indexer runs.
// In that case, there will be a change for the note, but the note will be gone.
return null;
};
for (let i = 0; i < changes.length; i++) {
const change = changes[i];
if (change.type === ItemChange.TYPE_CREATE || change.type === ItemChange.TYPE_UPDATE) {
const note = noteById(change.item_id);
if (note) {
if (note.encryption_applied) {
// If we hit an encrypted note, abort processing for now.
// Note will eventually get decrypted and processing can resume then.
// This is a limitation of the change tracking system - we cannot skip a change
// and keep processing the rest since we only keep track of "lastProcessedChangeId".
foundNoteWithEncryption = true;
break;
}
await this.setAssociatedResources(note.id, note.body);
} else {
this.logger().warn(`ResourceService::indexNoteResources: A change was recorded for a note that has been deleted: ${change.item_id}`);
}
} else if (change.type === ItemChange.TYPE_DELETE) {
await NoteResource.remove(change.item_id);
} else {
throw new Error(`Invalid change type: ${change.type}`);
}
Setting.setValue('resourceService.lastProcessedChangeId', change.id);
}
if (foundNoteWithEncryption) break;
}
await Setting.saveAll();
await NoteResource.addOrphanedResources();
await ItemChangeUtils.deleteProcessedChanges();
} catch (error) {
this.logger().error('ResourceService::indexNoteResources:', error);
}
this.isIndexing_ = false;
this.logger().info('ResourceService::indexNoteResources: Completed');
}
public async setAssociatedResources(noteId: string, noteBody: string) {
const resourceIds = await Note.linkedResourceIds(noteBody);
await NoteResource.setAssociatedResources(noteId, resourceIds);
}
public async deleteOrphanResources(expiryDelay: number = null) {
if (expiryDelay === null) expiryDelay = Setting.value('revisionService.ttlDays') * 24 * 60 * 60 * 1000;
const resourceIds = await NoteResource.orphanResources(expiryDelay);
this.logger().info('ResourceService::deleteOrphanResources:', resourceIds);
for (let i = 0; i < resourceIds.length; i++) {
const resourceId = resourceIds[i];
const results = await SearchEngine.instance().search(resourceId);
if (results.length) {
const note = await Note.load(results[0].id);
if (note) {
this.logger().info(sprintf('ResourceService::deleteOrphanResources: Skipping deletion of resource %s because it is still referenced in note %s. Re-indexing note content to fix the issue.', resourceId, note.id));
await this.setAssociatedResources(note.id, note.body);
}
} else {
await Resource.delete(resourceId);
}
}
}
private static async autoSetFileSize(resourceId: string, filePath: string, waitTillExists: boolean = true) {
const itDoes = await shim.fsDriver().waitTillExists(filePath, waitTillExists ? 10000 : 0);
if (!itDoes) {
// this.logger().warn('Trying to set file size on non-existent resource:', resourceId, filePath);
return;
}
const fileStat = await shim.fsDriver().stat(filePath);
await Resource.setFileSizeOnly(resourceId, fileStat.size);
}
public static async autoSetFileSizes() {
const resources = await Resource.needFileSizeSet();
for (const r of resources) {
await this.autoSetFileSize(r.id, Resource.fullPath(r), false);
}
}
public async maintenance() {
this.maintenanceCalls_.push(true);
try {
await this.indexNoteResources();
await this.deleteOrphanResources();
} finally {
this.maintenanceCalls_.pop();
}
}
public static runInBackground() {
if (this.isRunningInBackground_) return;
this.isRunningInBackground_ = true;
const service = this.instance();
service.maintenanceTimer1_ = shim.setTimeout(() => {
void service.maintenance();
}, 1000 * 30);
service.maintenanceTimer2_ = shim.setInterval(() => {
void service.maintenance();
}, 1000 * 60 * 60 * 4);
}
public async cancelTimers() {
if (this.maintenanceTimer1_) {
shim.clearTimeout(this.maintenanceTimer1_);
this.maintenanceTimer1_ = null;
}
if (this.maintenanceTimer2_) {
shim.clearInterval(this.maintenanceTimer2_);
this.maintenanceTimer2_ = null;
}
return new Promise((resolve) => {
const iid = shim.setInterval(() => {
if (!this.maintenanceCalls_.length) {
shim.clearInterval(iid);
resolve(null);
}
}, 100);
});
}
public static instance_: ResourceService = null;
public static instance() {
if (this.instance_) return this.instance_;
this.instance_ = new ResourceService();
return this.instance_;
}
}