72 lines
1.7 KiB
TypeScript
72 lines
1.7 KiB
TypeScript
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import { KV, KVStore } from "./kv_store.ts";
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export class JSONKVStore implements KVStore {
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private data: { [key: string]: any } = {};
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async load(path: string) {
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this.loadString(await Deno.readTextFile(path));
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}
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loadString(jsonString: string) {
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this.data = JSON.parse(jsonString);
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}
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async save(path: string) {
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await Deno.writeTextFile(path, JSON.stringify(this.data));
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}
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del(key: string): Promise<void> {
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delete this.data[key];
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return Promise.resolve();
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}
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deletePrefix(prefix: string): Promise<void> {
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for (const key in this.data) {
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if (key.startsWith(prefix)) {
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delete this.data[key];
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}
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}
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return Promise.resolve();
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}
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deleteAll(): Promise<void> {
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this.data = {};
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return Promise.resolve();
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}
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set(key: string, value: any): Promise<void> {
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this.data[key] = value;
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return Promise.resolve();
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}
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batchSet(kvs: KV[]): Promise<void> {
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for (const kv of kvs) {
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this.data[kv.key] = kv.value;
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}
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return Promise.resolve();
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}
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batchDelete(keys: string[]): Promise<void> {
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for (const key of keys) {
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delete this.data[key];
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}
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return Promise.resolve();
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}
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batchGet(keys: string[]): Promise<any[]> {
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return Promise.resolve(keys.map((key) => this.data[key]));
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}
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get(key: string): Promise<any> {
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return Promise.resolve(this.data[key]);
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}
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has(key: string): Promise<boolean> {
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return Promise.resolve(key in this.data);
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}
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queryPrefix(keyPrefix: string): Promise<{ key: string; value: any }[]> {
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const results: { key: string; value: any }[] = [];
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for (const key in this.data) {
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if (key.startsWith(keyPrefix)) {
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results.push({ key, value: this.data[key] });
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}
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}
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return Promise.resolve(results);
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}
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}
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