mirror of
https://github.com/laurent22/joplin.git
synced 2024-12-03 08:35:29 +02:00
293 lines
8.9 KiB
TypeScript
293 lines
8.9 KiB
TypeScript
import Resource from '../models/Resource';
|
|
import Setting from '../models/Setting';
|
|
import BaseService from './BaseService';
|
|
import ResourceService from './ResourceService';
|
|
import Logger from '../Logger';
|
|
import shim from '../shim';
|
|
const { Dirnames } = require('./synchronizer/utils/types');
|
|
const EventEmitter = require('events');
|
|
|
|
export default class ResourceFetcher extends BaseService {
|
|
|
|
public static instance_: ResourceFetcher;
|
|
|
|
public dispatch: Function = (_o: any) => {};
|
|
private logger_: Logger = new Logger();
|
|
private queue_: any[] = [];
|
|
private fetchingItems_: any = {};
|
|
private maxDownloads_ = 3;
|
|
private addingResources_ = false;
|
|
private eventEmitter_ = new EventEmitter();
|
|
private autoAddResourcesCalls_: any[] = [];
|
|
private fileApi_: any;
|
|
private updateReportIID_: any;
|
|
private scheduleQueueProcessIID_: any;
|
|
private scheduleAutoAddResourcesIID_: any;
|
|
|
|
constructor(fileApi: any = null) {
|
|
super();
|
|
this.setFileApi(fileApi);
|
|
}
|
|
|
|
static instance() {
|
|
if (ResourceFetcher.instance_) return ResourceFetcher.instance_;
|
|
ResourceFetcher.instance_ = new ResourceFetcher();
|
|
return ResourceFetcher.instance_;
|
|
}
|
|
|
|
on(eventName: string, callback: Function) {
|
|
return this.eventEmitter_.on(eventName, callback);
|
|
}
|
|
|
|
off(eventName: string, callback: Function) {
|
|
return this.eventEmitter_.removeListener(eventName, callback);
|
|
}
|
|
|
|
setLogger(logger: Logger) {
|
|
this.logger_ = logger;
|
|
}
|
|
|
|
logger() {
|
|
return this.logger_;
|
|
}
|
|
|
|
setFileApi(v: any) {
|
|
if (v !== null && typeof v !== 'function') throw new Error(`fileApi must be a function that returns the API. Type is ${typeof v}`);
|
|
this.fileApi_ = v;
|
|
}
|
|
|
|
async fileApi() {
|
|
return this.fileApi_();
|
|
}
|
|
|
|
queuedItemIndex_(resourceId: string) {
|
|
for (let i = 0; i < this.fetchingItems_.length; i++) {
|
|
const item = this.fetchingItems_[i];
|
|
if (item.id === resourceId) return i;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
updateReport() {
|
|
const fetchingCount = Object.keys(this.fetchingItems_).length;
|
|
this.dispatch({
|
|
type: 'RESOURCE_FETCHER_SET',
|
|
fetchingCount: fetchingCount,
|
|
toFetchCount: fetchingCount + this.queue_.length,
|
|
});
|
|
}
|
|
|
|
async markForDownload(resourceIds: string[]) {
|
|
if (!Array.isArray(resourceIds)) resourceIds = [resourceIds];
|
|
|
|
const fetchStatuses = await Resource.fetchStatuses(resourceIds);
|
|
|
|
const idsToKeep = [];
|
|
for (const status of fetchStatuses) {
|
|
if (status.fetch_status !== Resource.FETCH_STATUS_IDLE) continue;
|
|
idsToKeep.push(status.resource_id);
|
|
}
|
|
|
|
for (const id of idsToKeep) {
|
|
await Resource.markForDownload(id);
|
|
}
|
|
|
|
for (const id of idsToKeep) {
|
|
this.queueDownload_(id, 'high');
|
|
}
|
|
}
|
|
|
|
queueDownload_(resourceId: string, priority: string = null) {
|
|
if (priority === null) priority = 'normal';
|
|
|
|
const index = this.queuedItemIndex_(resourceId);
|
|
if (index >= 0) return false;
|
|
if (this.fetchingItems_[resourceId]) return false;
|
|
|
|
const item = { id: resourceId };
|
|
|
|
if (priority === 'high') {
|
|
this.queue_.splice(0, 0, item);
|
|
} else {
|
|
this.queue_.push(item);
|
|
}
|
|
|
|
this.updateReport();
|
|
|
|
this.scheduleQueueProcess();
|
|
return true;
|
|
}
|
|
|
|
async startDownload_(resourceId: string) {
|
|
if (this.fetchingItems_[resourceId]) return;
|
|
this.fetchingItems_[resourceId] = true;
|
|
|
|
this.updateReport();
|
|
|
|
const resource = await Resource.load(resourceId);
|
|
const localState = await Resource.localState(resource);
|
|
|
|
const completeDownload = async (emitDownloadComplete = true, localResourceContentPath = '') => {
|
|
// 2019-05-12: This is only necessary to set the file size of the resources that come via
|
|
// sync. The other ones have been done using migrations/20.js. This code can be removed
|
|
// after a few months.
|
|
if (resource && resource.size < 0 && localResourceContentPath && !resource.encryption_blob_encrypted) {
|
|
await shim.fsDriver().waitTillExists(localResourceContentPath);
|
|
await ResourceService.autoSetFileSizes();
|
|
}
|
|
|
|
delete this.fetchingItems_[resource.id];
|
|
this.logger().debug(`ResourceFetcher: Removed from fetchingItems: ${resource.id}. New: ${JSON.stringify(this.fetchingItems_)}`);
|
|
this.scheduleQueueProcess();
|
|
|
|
// Note: This downloadComplete event is not really right or useful because the resource
|
|
// might still be encrypted and the caller usually can't do much with this. In particular
|
|
// the note being displayed will refresh the resource images but since they are still
|
|
// encrypted it's not useful. Probably, the views should listen to DecryptionWorker events instead.
|
|
if (resource && emitDownloadComplete) this.eventEmitter_.emit('downloadComplete', { id: resource.id, encrypted: !!resource.encryption_blob_encrypted });
|
|
this.updateReport();
|
|
};
|
|
|
|
if (!resource) {
|
|
this.logger().info(`ResourceFetcher: Attempting to download a resource that does not exist (has been deleted?): ${resourceId}`);
|
|
await completeDownload(false);
|
|
return;
|
|
}
|
|
|
|
// Shouldn't happen, but just to be safe don't re-download the
|
|
// resource if it's already been downloaded.
|
|
if (localState.fetch_status === Resource.FETCH_STATUS_DONE) {
|
|
await completeDownload(false);
|
|
return;
|
|
}
|
|
|
|
this.fetchingItems_[resourceId] = resource;
|
|
|
|
const localResourceContentPath = Resource.fullPath(resource, !!resource.encryption_blob_encrypted);
|
|
const remoteResourceContentPath = `${Dirnames.Resources}/${resource.id}`;
|
|
|
|
await Resource.setLocalState(resource, { fetch_status: Resource.FETCH_STATUS_STARTED });
|
|
|
|
const fileApi = await this.fileApi();
|
|
|
|
this.logger().debug(`ResourceFetcher: Downloading resource: ${resource.id}`);
|
|
|
|
this.eventEmitter_.emit('downloadStarted', { id: resource.id });
|
|
|
|
fileApi
|
|
.get(remoteResourceContentPath, { path: localResourceContentPath, target: 'file' })
|
|
.then(async () => {
|
|
await Resource.setLocalState(resource, { fetch_status: Resource.FETCH_STATUS_DONE });
|
|
this.logger().debug(`ResourceFetcher: Resource downloaded: ${resource.id}`);
|
|
await completeDownload(true, localResourceContentPath);
|
|
})
|
|
.catch(async (error: any) => {
|
|
this.logger().error(`ResourceFetcher: Could not download resource: ${resource.id}`, error);
|
|
await Resource.setLocalState(resource, { fetch_status: Resource.FETCH_STATUS_ERROR, fetch_error: error.message });
|
|
await completeDownload();
|
|
});
|
|
}
|
|
|
|
processQueue_() {
|
|
while (Object.getOwnPropertyNames(this.fetchingItems_).length < this.maxDownloads_) {
|
|
if (!this.queue_.length) break;
|
|
const item = this.queue_.splice(0, 1)[0];
|
|
void this.startDownload_(item.id);
|
|
}
|
|
|
|
if (!this.queue_.length) {
|
|
void this.autoAddResources(10);
|
|
}
|
|
}
|
|
|
|
async waitForAllFinished() {
|
|
return new Promise((resolve) => {
|
|
const iid = shim.setInterval(() => {
|
|
if (!this.updateReportIID_ &&
|
|
!this.scheduleQueueProcessIID_ &&
|
|
!this.queue_.length &&
|
|
!this.autoAddResourcesCalls_.length &&
|
|
!Object.getOwnPropertyNames(this.fetchingItems_).length) {
|
|
|
|
shim.clearInterval(iid);
|
|
resolve(null);
|
|
}
|
|
}, 100);
|
|
});
|
|
}
|
|
|
|
async autoAddResources(limit: number = null) {
|
|
this.autoAddResourcesCalls_.push(true);
|
|
try {
|
|
if (limit === null) limit = 10;
|
|
|
|
if (this.addingResources_) return;
|
|
this.addingResources_ = true;
|
|
|
|
this.logger().info(`ResourceFetcher: Auto-add resources: Mode: ${Setting.value('sync.resourceDownloadMode')}`);
|
|
|
|
let count = 0;
|
|
const resources = await Resource.needToBeFetched(Setting.value('sync.resourceDownloadMode'), limit);
|
|
for (let i = 0; i < resources.length; i++) {
|
|
const added = this.queueDownload_(resources[i].id);
|
|
if (added) count++;
|
|
}
|
|
|
|
this.logger().info(`ResourceFetcher: Auto-added resources: ${count}`);
|
|
|
|
const errorCount = await Resource.downloadStatusCounts(Resource.FETCH_STATUS_ERROR);
|
|
if (errorCount) this.dispatch({ type: 'SYNC_HAS_DISABLED_SYNC_ITEMS' });
|
|
|
|
} finally {
|
|
this.addingResources_ = false;
|
|
this.autoAddResourcesCalls_.pop();
|
|
}
|
|
}
|
|
|
|
async start() {
|
|
await Resource.resetStartedFetchStatus();
|
|
void this.autoAddResources(10);
|
|
}
|
|
|
|
scheduleQueueProcess() {
|
|
if (this.scheduleQueueProcessIID_) {
|
|
shim.clearTimeout(this.scheduleQueueProcessIID_);
|
|
this.scheduleQueueProcessIID_ = null;
|
|
}
|
|
|
|
this.scheduleQueueProcessIID_ = shim.setTimeout(() => {
|
|
this.processQueue_();
|
|
this.scheduleQueueProcessIID_ = null;
|
|
}, 100);
|
|
}
|
|
|
|
scheduleAutoAddResources() {
|
|
if (this.scheduleAutoAddResourcesIID_) return;
|
|
|
|
this.scheduleAutoAddResourcesIID_ = shim.setTimeout(() => {
|
|
this.scheduleAutoAddResourcesIID_ = null;
|
|
void ResourceFetcher.instance().autoAddResources();
|
|
}, 1000);
|
|
}
|
|
|
|
async fetchAll() {
|
|
await Resource.resetStartedFetchStatus();
|
|
void this.autoAddResources(null);
|
|
}
|
|
|
|
async destroy() {
|
|
this.eventEmitter_.removeAllListeners();
|
|
if (this.scheduleQueueProcessIID_) {
|
|
shim.clearTimeout(this.scheduleQueueProcessIID_);
|
|
this.scheduleQueueProcessIID_ = null;
|
|
}
|
|
if (this.scheduleAutoAddResourcesIID_) {
|
|
shim.clearTimeout(this.scheduleAutoAddResourcesIID_);
|
|
this.scheduleAutoAddResourcesIID_ = null;
|
|
}
|
|
await this.waitForAllFinished();
|
|
this.eventEmitter_ = null;
|
|
ResourceFetcher.instance_ = null;
|
|
}
|
|
}
|