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alloe cache on lowdb

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This commit is contained in:
Kyle Spearrin 2018-06-05 14:44:13 -04:00
parent 66b3dbae17
commit 476d21e9f0
1 changed files with 17 additions and 7 deletions
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24
src/services/lowdbStorage.service.ts
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@ -12,7 +12,7 @@ export class LowdbStorageService implements StorageService {
private db: lowdb.LowdbSync<any>;
private defaults: any;
constructor(defaults?: any, dir?: string) {
constructor(defaults?: any, dir?: string, private allowCache = false) {
this.defaults = defaults;
let adapter: lowdb.AdapterSync<any>;
@ -22,20 +22,24 @@ export class LowdbStorageService implements StorageService {
}
const p = path.join(dir, 'data.json');
adapter = new FileSync(p);
} else if (Utils.isBrowser && !Utils.isNode) {
// local storage adapter for web
}
this.db = lowdb(adapter);
}
init() {
if (this.defaults != null) {
this.db.read().defaults(this.defaults).write();
if (!this.allowCache) {
this.db.read();
}
this.db.defaults(this.defaults).write();
}
}
get<T>(key: string): Promise<T> {
const val = this.db.read().get(key).value();
if (!this.allowCache) {
this.db.read();
}
const val = this.db.get(key).value();
if (val == null) {
return Promise.resolve(null);
}
@ -43,12 +47,18 @@ export class LowdbStorageService implements StorageService {
}
save(key: string, obj: any): Promise<any> {
this.db.read().set(key, obj).write();
if (!this.allowCache) {
this.db.read();
}
this.db.set(key, obj).write();
return Promise.resolve();
}
remove(key: string): Promise<any> {
this.db.read().unset(key).write();
if (!this.allowCache) {
this.db.read();
}
this.db.unset(key).write();
return Promise.resolve();
}
}