@credo-ts/core/build/modules/cache/InMemoryLruCache.mjs

<p align="center"> <br /> <img alt="Credo Logo" src="https://github.com/openwallet-foundation/credo-ts/blob/c7886cb8377ceb8ee4efe8d264211e561a75072d/images/credo-logo.png" height="250px" /> </p> <h1 align="center"><b>Credo - Core</b></h1

import LRUMap from "lru_map";
//#region src/modules/cache/InMemoryLruCache.ts
/**
* In memory LRU cache.
*
* This cache can be used with multiple agent context instances. Keys are namespaced by the
* `contextCorrelationId` of the agent context by default, and by `global:` for entries using the
* `'global'` scope. Note that separate root agent instances sharing this cache also share the
* `default` context namespace.
*
* The `limit` applies to the cache as a whole, spanning all contexts and the global scope, so a
* busy context can evict entries of other contexts. `clear()` also clears all scopes and contexts.
*/
var InMemoryLruCache = class {
	constructor({ limit }) {
		this.cache = new LRUMap.LRUMap(limit);
	}
	getNamespacedKey(agentContext, key, options) {
		if (options?.scope === "global") return `global:${key}`;
		return `${agentContext.contextCorrelationId}:${key}`;
	}
	async get(agentContext, key, options) {
		this.removeExpiredItems();
		key = this.getNamespacedKey(agentContext, key, options);
		const item = this.cache.get(key);
		if (!item) return null;
		return item.value;
	}
	async set(agentContext, key, value, expiresInSeconds, options) {
		this.removeExpiredItems();
		let expiresDate;
		if (expiresInSeconds) {
			expiresDate = /* @__PURE__ */ new Date();
			expiresDate.setSeconds(expiresDate.getSeconds() + expiresInSeconds);
		}
		key = this.getNamespacedKey(agentContext, key, options);
		this.cache.set(key, {
			expiresAt: expiresDate?.getTime(),
			value
		});
	}
	clear() {
		this.cache.clear();
	}
	async remove(agentContext, key, options) {
		this.removeExpiredItems();
		key = this.getNamespacedKey(agentContext, key, options);
		this.cache.delete(key);
	}
	removeExpiredItems() {
		this.cache.forEach((value, key) => {
			if (value.expiresAt && Date.now() > value.expiresAt) this.cache.delete(key);
		});
	}
};
//#endregion
export { InMemoryLruCache };

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