69 lines
2.1 KiB
TypeScript
69 lines
2.1 KiB
TypeScript
import * as plugins from './levelcache.plugins';
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import * as paths from './levelcache.paths';
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import { AbstractCache } from './levelcache.abstract.classes.cache';
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import { ILevelCacheConstructorOptions, LevelCache } from './levelcache.classes.levelcache';
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import { CacheEntry } from './levelcache.classes.cacheentry';
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/**
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*
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*/
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export class CacheDiskManager extends AbstractCache {
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private levelCacheRef: LevelCache;
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private readyDeferred = plugins.smartpromise.defer<void>();
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public ready = this.readyDeferred.promise;
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public status: 'active' | 'inactive';
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public fsPath: string;
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public maxCacheSizeInMb: number;
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constructor(levelCacheRefArg: LevelCache) {
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super();
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this.levelCacheRef = levelCacheRefArg;
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this.init();
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}
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public async init() {
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if (this.levelCacheRef.options.diskStoragePath) {
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this.fsPath = plugins.path.join(
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this.levelCacheRef.options.diskStoragePath,
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this.levelCacheRef.options.cacheId
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);
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} else {
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this.fsPath = plugins.path.join(paths.nogitDir, this.levelCacheRef.options.cacheId);
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}
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if (this.status === 'active') {
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plugins.smartfile.fs.ensureDirSync(this.fsPath);
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}
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this.readyDeferred.resolve();
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}
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public async retrieveCacheEntryByKey(keyArg: string): Promise<CacheEntry> {
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const fileString = await plugins.smartfile.fs.toStringSync(
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plugins.path.join(this.fsPath, encodeURIComponent(keyArg))
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);
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return CacheEntry.fromStorageJsonString(fileString);
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}
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public async storeCacheEntryByKey(keyArg: string, cacheEntryArg: CacheEntry) {
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await plugins.smartfile.memory.toFs(
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cacheEntryArg.foldToJson(),
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plugins.path.join(this.fsPath, encodeURIComponent(keyArg))
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);
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}
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public async checkKeyPresence(keyArg): Promise<boolean> {
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return plugins.smartfile.fs.isFile(plugins.path.join(this.fsPath, encodeURIComponent(keyArg)));
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}
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/**
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* cleans the DiskCache directory
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*/
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public async clean() {
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if (this.status === 'active') {
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if (plugins.smartfile.fs.isDirectory(this.fsPath)) {
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await plugins.smartfile.fs.ensureEmptyDir(this.fsPath);
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}
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}
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}
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}
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