@safaricom-mxl/nextjs-turbo-redis-cache/src/ZodHandler.ts

Next.js redis cache handler

/**
 * This handler is used to validate the arguments of the get, set, revalidateTag methods against a zod schema.
 * This is mainly used to test new nextjs versions and to ensure that the arguments are still valid. As we
 * saw in the past, that arguments against the cache handler changed between different nextjs versions very often (even between patch versions).
 */

import RedisStringsHandler, {
  type CreateRedisStringsHandlerOptions,
} from "./RedisStringsHandler";
import { debugVerbose } from "./utils/debug";

let cachedHandler: RedisStringsHandler;

// Function to reset the cached handler (for testing)
export function resetCachedHandler() {
  cachedHandler = undefined as any;
}

export default class CachedHandler {
  constructor(options: CreateRedisStringsHandlerOptions) {
    if (!cachedHandler) {
      cachedHandler = new RedisStringsHandler(options);
    }
  }
  get(
    ...args: Parameters<RedisStringsHandler["get"]>
  ): ReturnType<RedisStringsHandler["get"]> {
    debugVerbose("CachedHandler.get called with", args);
    return cachedHandler.get(...args);
  }
  set(
    ...args: Parameters<RedisStringsHandler["set"]>
  ): ReturnType<RedisStringsHandler["set"]> {
    debugVerbose("CachedHandler.set called with", args);
    return cachedHandler.set(...args);
  }
  revalidateTag(
    ...args: Parameters<RedisStringsHandler["revalidateTag"]>
  ): ReturnType<RedisStringsHandler["revalidateTag"]> {
    debugVerbose("CachedHandler.revalidateTag called with", args);
    return cachedHandler.revalidateTag(...args);
  }
  resetRequestCache(
    ...args: Parameters<RedisStringsHandler["resetRequestCache"]>
  ): ReturnType<RedisStringsHandler["resetRequestCache"]> {
    // debug("CachedHandler.resetRequestCache called with", args);
    return cachedHandler.resetRequestCache(...args);
  }
}