@fedify/fedify/esm/federation/kv.js

An ActivityPub server framework

/**
 * A key for a key-value store.  An array of one or more strings.
 *
 * @since 0.5.0
 */
import * as dntShim from "../_dnt.shims.js";
/**
 * A key-value store that stores values in memory.
 * Do not use this in production as it does not persist values.
 *
 * @since 0.5.0
 */
export class MemoryKvStore {
    #values = {};
    #encodeKey(key) {
        return JSON.stringify(key);
    }
    /**
     * {@inheritDoc KvStore.get}
     */
    get(key) {
        const encodedKey = this.#encodeKey(key);
        const entry = this.#values[encodedKey];
        if (entry == null)
            return Promise.resolve(undefined);
        const [value, expiration] = entry;
        if (expiration != null && dntShim.Temporal.Now.instant().until(expiration).sign < 0) {
            delete this.#values[encodedKey];
            return Promise.resolve(undefined);
        }
        return Promise.resolve(value);
    }
    /**
     * {@inheritDoc KvStore.set}
     */
    set(key, value, options) {
        const encodedKey = this.#encodeKey(key);
        const expiration = options?.ttl == null
            ? null
            : dntShim.Temporal.Now.instant().add(options.ttl.round({ largestUnit: "hour" }));
        this.#values[encodedKey] = [value, expiration];
        return Promise.resolve();
    }
    /**
     * {@inheritDoc KvStore.delete}
     */
    delete(key) {
        const encodedKey = this.#encodeKey(key);
        delete this.#values[encodedKey];
        return Promise.resolve();
    }
}