next
Version:
The React Framework
128 lines (127 loc) • 5.68 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = void 0;
var _renderResult = _interopRequireDefault(require("./render-result"));
class ResponseCache {
constructor(incrementalCache, minimalMode){
this.incrementalCache = incrementalCache;
this.pendingResponses = new Map();
this.minimalMode = minimalMode;
}
get(key, responseGenerator, context) {
var ref2;
// ensure manual revalidate doesn't block normal requests
const pendingResponseKey = key ? `${key}-${context.isManualRevalidate ? "1" : "0"}` : null;
const pendingResponse = pendingResponseKey ? this.pendingResponses.get(pendingResponseKey) : null;
if (pendingResponse) {
return pendingResponse;
}
let resolver = ()=>{};
let rejecter = ()=>{};
const promise = new Promise((resolve, reject)=>{
resolver = resolve;
rejecter = reject;
});
if (pendingResponseKey) {
this.pendingResponses.set(pendingResponseKey, promise);
}
let resolved = false;
const resolve1 = (cacheEntry)=>{
if (pendingResponseKey) {
// Ensure all reads from the cache get the latest value.
this.pendingResponses.set(pendingResponseKey, Promise.resolve(cacheEntry));
}
if (!resolved) {
resolved = true;
resolver(cacheEntry);
}
};
// we keep the previous cache entry around to leverage
// when the incremental cache is disabled in minimal mode
if (pendingResponseKey && this.minimalMode && ((ref2 = this.previousCacheItem) == null ? void 0 : ref2.key) === pendingResponseKey && this.previousCacheItem.expiresAt > Date.now()) {
resolve1(this.previousCacheItem.entry);
this.pendingResponses.delete(pendingResponseKey);
return promise;
}
(async ()=>{
let cachedResponse = null;
try {
cachedResponse = key && !this.minimalMode ? await this.incrementalCache.get(key) : null;
if (cachedResponse && !context.isManualRevalidate) {
var ref;
resolve1({
isStale: cachedResponse.isStale,
revalidate: cachedResponse.curRevalidate,
value: ((ref = cachedResponse.value) == null ? void 0 : ref.kind) === "PAGE" ? {
kind: "PAGE",
html: _renderResult.default.fromStatic(cachedResponse.value.html),
pageData: cachedResponse.value.pageData
} : cachedResponse.value
});
if (!cachedResponse.isStale || context.isPrefetch) {
// The cached value is still valid, so we don't need
// to update it yet.
return;
}
}
const cacheEntry = await responseGenerator(resolved, !!cachedResponse);
const resolveValue = cacheEntry === null ? null : {
...cacheEntry,
isMiss: !cachedResponse
};
// for manual revalidate wait to resolve until cache is set
if (!context.isManualRevalidate) {
resolve1(resolveValue);
}
if (key && cacheEntry && typeof cacheEntry.revalidate !== "undefined") {
if (this.minimalMode) {
this.previousCacheItem = {
key: pendingResponseKey || key,
entry: cacheEntry,
expiresAt: Date.now() + 1000
};
} else {
var ref1;
await this.incrementalCache.set(key, ((ref1 = cacheEntry.value) == null ? void 0 : ref1.kind) === "PAGE" ? {
kind: "PAGE",
html: cacheEntry.value.html.toUnchunkedString(),
pageData: cacheEntry.value.pageData
} : cacheEntry.value, cacheEntry.revalidate);
}
} else {
this.previousCacheItem = undefined;
}
if (context.isManualRevalidate) {
resolve1(resolveValue);
}
} catch (err) {
// when a getStaticProps path is erroring we automatically re-set the
// existing cache under a new expiration to prevent non-stop retrying
if (cachedResponse && key) {
await this.incrementalCache.set(key, cachedResponse.value, Math.min(Math.max(cachedResponse.revalidate || 3, 3), 30));
}
// while revalidating in the background we can't reject as
// we already resolved the cache entry so log the error here
if (resolved) {
console.error(err);
} else {
rejecter(err);
}
} finally{
if (pendingResponseKey) {
this.pendingResponses.delete(pendingResponseKey);
}
}
})();
return promise;
}
}
exports.default = ResponseCache;
function _interopRequireDefault(obj) {
return obj && obj.__esModule ? obj : {
default: obj
};
}
//# sourceMappingURL=response-cache.js.map