73 lines
2.0 KiB
TypeScript
73 lines
2.0 KiB
TypeScript
/// <reference lib="deno.unstable" />
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import { KV, KvKey, KvPrimitives, KvQueryOptions } from "./kv_primitives.ts";
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const kvBatchSize = 10;
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export class DenoKvPrimitives implements KvPrimitives {
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db!: Deno.Kv;
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constructor(private path?: string) {
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}
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async init() {
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this.db = await Deno.openKv(this.path);
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}
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async batchGet(keys: KvKey[]): Promise<any[]> {
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const results: any[] = [];
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const batches: Deno.KvKey[][] = [];
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for (let i = 0; i < keys.length; i += kvBatchSize) {
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batches.push(keys.slice(i, i + kvBatchSize));
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}
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for (const batch of batches) {
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const res = await this.db.getMany(batch);
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results.push(...res.map((r) => r.value === null ? undefined : r.value));
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}
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return results;
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}
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async batchSet(entries: KV[]): Promise<void> {
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// Split into batches of kvBatchSize
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const batches: KV[][] = [];
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for (let i = 0; i < entries.length; i += kvBatchSize) {
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batches.push(entries.slice(i, i + kvBatchSize));
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}
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for (const batch of batches) {
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let batchOp = this.db.atomic();
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for (const { key, value } of batch) {
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batchOp = batchOp.set(key, value);
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}
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const res = await batchOp.commit();
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if (!res.ok) {
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throw res;
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}
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}
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}
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async batchDelete(keys: KvKey[]): Promise<void> {
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const batches: KvKey[][] = [];
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for (let i = 0; i < keys.length; i += kvBatchSize) {
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batches.push(keys.slice(i, i + kvBatchSize));
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}
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for (const batch of batches) {
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let batchOp = this.db.atomic();
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for (const key of batch) {
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batchOp = batchOp.delete(key);
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}
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const res = await batchOp.commit();
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if (!res.ok) {
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throw res;
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}
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}
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}
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async *query({ prefix }: KvQueryOptions): AsyncIterableIterator<KV> {
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prefix = prefix || [];
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for await (
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const result of this.db.list({ prefix: prefix as Deno.KvKey })
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) {
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yield { key: result.key as KvKey, value: result.value as any };
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}
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}
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close() {
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this.db.close();
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}
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}
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