107 lines
4.6 KiB
JavaScript
107 lines
4.6 KiB
JavaScript
import DefaultCacheHandler from '../lib/cache-handlers/default';
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const debug = process.env.NEXT_PRIVATE_DEBUG_CACHE ? (message, ...args)=>{
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console.log(`use-cache: ${message}`, ...args);
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} : undefined;
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const handlersSymbol = Symbol.for('@next/cache-handlers');
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const handlersMapSymbol = Symbol.for('@next/cache-handlers-map');
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const handlersSetSymbol = Symbol.for('@next/cache-handlers-set');
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/**
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* The reference to the cache handlers. We store the cache handlers on the
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* global object so that we can access the same instance across different
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* boundaries (such as different copies of the same module).
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*/ const reference = globalThis;
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/**
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* Initialize the cache handlers.
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* @returns `true` if the cache handlers were initialized, `false` if they were already initialized.
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*/ export function initializeCacheHandlers() {
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// If the cache handlers have already been initialized, don't do it again.
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if (reference[handlersMapSymbol]) {
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debug == null ? void 0 : debug('cache handlers already initialized');
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return false;
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}
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debug == null ? void 0 : debug('initializing cache handlers');
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reference[handlersMapSymbol] = new Map();
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// Initialize the cache from the symbol contents first.
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if (reference[handlersSymbol]) {
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let fallback;
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if (reference[handlersSymbol].DefaultCache) {
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debug == null ? void 0 : debug('setting "default" cache handler from symbol');
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fallback = reference[handlersSymbol].DefaultCache;
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} else {
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debug == null ? void 0 : debug('setting "default" cache handler from default');
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fallback = DefaultCacheHandler;
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}
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reference[handlersMapSymbol].set('default', fallback);
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if (reference[handlersSymbol].RemoteCache) {
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debug == null ? void 0 : debug('setting "remote" cache handler from symbol');
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reference[handlersMapSymbol].set('remote', reference[handlersSymbol].RemoteCache);
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} else {
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debug == null ? void 0 : debug('setting "remote" cache handler from default');
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reference[handlersMapSymbol].set('remote', fallback);
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}
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} else {
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debug == null ? void 0 : debug('setting "default" cache handler from default');
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reference[handlersMapSymbol].set('default', DefaultCacheHandler);
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debug == null ? void 0 : debug('setting "remote" cache handler from default');
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reference[handlersMapSymbol].set('remote', DefaultCacheHandler);
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}
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// Create a set of the cache handlers.
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reference[handlersSetSymbol] = new Set(reference[handlersMapSymbol].values());
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return true;
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}
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/**
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* Get a cache handler by kind.
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* @param kind - The kind of cache handler to get.
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* @returns The cache handler, or `undefined` if it does not exist.
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* @throws If the cache handlers are not initialized.
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*/ export function getCacheHandler(kind) {
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// This should never be called before initializeCacheHandlers.
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if (!reference[handlersMapSymbol]) {
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throw Object.defineProperty(new Error('Cache handlers not initialized'), "__NEXT_ERROR_CODE", {
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value: "E649",
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enumerable: false,
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configurable: true
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});
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}
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return reference[handlersMapSymbol].get(kind);
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}
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/**
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* Get a set iterator over the cache handlers.
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* @returns An iterator over the cache handlers, or `undefined` if they are not
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* initialized.
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*/ export function getCacheHandlers() {
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if (!reference[handlersSetSymbol]) {
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return undefined;
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}
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return reference[handlersSetSymbol].values();
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}
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/**
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* Get a map iterator over the cache handlers (keyed by kind).
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* @returns An iterator over the cache handler entries, or `undefined` if they
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* are not initialized.
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* @throws If the cache handlers are not initialized.
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*/ export function getCacheHandlerEntries() {
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if (!reference[handlersMapSymbol]) {
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return undefined;
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}
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return reference[handlersMapSymbol].entries();
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}
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/**
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* Set a cache handler by kind.
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* @param kind - The kind of cache handler to set.
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* @param cacheHandler - The cache handler to set.
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*/ export function setCacheHandler(kind, cacheHandler) {
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// This should never be called before initializeCacheHandlers.
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if (!reference[handlersMapSymbol] || !reference[handlersSetSymbol]) {
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throw Object.defineProperty(new Error('Cache handlers not initialized'), "__NEXT_ERROR_CODE", {
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value: "E649",
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enumerable: false,
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configurable: true
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});
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}
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debug == null ? void 0 : debug('setting cache handler for "%s"', kind);
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reference[handlersMapSymbol].set(kind, cacheHandler);
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reference[handlersSetSymbol].add(cacheHandler);
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}
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//# sourceMappingURL=handlers.js.map
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