File: //var/www/html/orbi-individual/node_modules/next/dist/server/lib/incremental-cache/fetch-cache.js
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "default", {
enumerable: true,
get: function() {
return FetchCache;
}
});
const _lrucache = /*#__PURE__*/ _interop_require_default(require("next/dist/compiled/lru-cache"));
const _constants = require("../../../lib/constants");
function _interop_require_default(obj) {
return obj && obj.__esModule ? obj : {
default: obj
};
}
let rateLimitedUntil = 0;
let memoryCache;
const CACHE_TAGS_HEADER = "x-vercel-cache-tags";
const CACHE_HEADERS_HEADER = "x-vercel-sc-headers";
const CACHE_STATE_HEADER = "x-vercel-cache-state";
const CACHE_REVALIDATE_HEADER = "x-vercel-revalidate";
const CACHE_FETCH_URL_HEADER = "x-vercel-cache-item-name";
const CACHE_CONTROL_VALUE_HEADER = "x-vercel-cache-control";
const DEBUG = Boolean(process.env.NEXT_PRIVATE_DEBUG_CACHE);
async function fetchRetryWithTimeout(url, init, retryIndex = 0) {
const controller = new AbortController();
const timeout = setTimeout(()=>{
controller.abort();
}, 500);
return fetch(url, {
...init || {},
signal: controller.signal
}).catch((err)=>{
if (retryIndex === 3) {
throw err;
} else {
if (DEBUG) {
console.log(`Fetch failed for ${url} retry ${retryIndex}`);
}
return fetchRetryWithTimeout(url, init, retryIndex + 1);
}
}).finally(()=>{
clearTimeout(timeout);
});
}
class FetchCache {
hasMatchingTags(arr1, arr2) {
if (arr1.length !== arr2.length) return false;
const set1 = new Set(arr1);
const set2 = new Set(arr2);
if (set1.size !== set2.size) return false;
for (let tag of set1){
if (!set2.has(tag)) return false;
}
return true;
}
static isAvailable(ctx) {
return !!(ctx._requestHeaders["x-vercel-sc-host"] || process.env.SUSPENSE_CACHE_URL);
}
constructor(ctx){
this.headers = {};
this.headers["Content-Type"] = "application/json";
if (CACHE_HEADERS_HEADER in ctx._requestHeaders) {
const newHeaders = JSON.parse(ctx._requestHeaders[CACHE_HEADERS_HEADER]);
for(const k in newHeaders){
this.headers[k] = newHeaders[k];
}
delete ctx._requestHeaders[CACHE_HEADERS_HEADER];
}
const scHost = ctx._requestHeaders["x-vercel-sc-host"] || process.env.SUSPENSE_CACHE_URL;
const scBasePath = ctx._requestHeaders["x-vercel-sc-basepath"] || process.env.SUSPENSE_CACHE_BASEPATH;
if (process.env.SUSPENSE_CACHE_AUTH_TOKEN) {
this.headers["Authorization"] = `Bearer ${process.env.SUSPENSE_CACHE_AUTH_TOKEN}`;
}
if (scHost) {
const scProto = process.env.SUSPENSE_CACHE_PROTO || "https";
this.cacheEndpoint = `${scProto}://${scHost}${scBasePath || ""}`;
if (DEBUG) {
console.log("using cache endpoint", this.cacheEndpoint);
}
} else if (DEBUG) {
console.log("no cache endpoint available");
}
if (ctx.maxMemoryCacheSize) {
if (!memoryCache) {
if (DEBUG) {
console.log("using memory store for fetch cache");
}
memoryCache = new _lrucache.default({
max: ctx.maxMemoryCacheSize,
length ({ value }) {
var _JSON_stringify;
if (!value) {
return 25;
} else if (value.kind === "REDIRECT") {
return JSON.stringify(value.props).length;
} else if (value.kind === "IMAGE") {
throw new Error("invariant image should not be incremental-cache");
} else if (value.kind === "FETCH") {
return JSON.stringify(value.data || "").length;
} else if (value.kind === "ROUTE") {
return value.body.length;
}
// rough estimate of size of cache value
return value.html.length + (((_JSON_stringify = JSON.stringify(value.kind === "PAGE" && value.pageData)) == null ? void 0 : _JSON_stringify.length) || 0);
}
});
}
} else {
if (DEBUG) {
console.log("not using memory store for fetch cache");
}
}
}
resetRequestCache() {
memoryCache == null ? void 0 : memoryCache.reset();
}
async revalidateTag(...args) {
let [tags] = args;
tags = typeof tags === "string" ? [
tags
] : tags;
if (DEBUG) {
console.log("revalidateTag", tags);
}
if (!tags.length) return;
if (Date.now() < rateLimitedUntil) {
if (DEBUG) {
console.log("rate limited ", rateLimitedUntil);
}
return;
}
try {
const res = await fetchRetryWithTimeout(`${this.cacheEndpoint}/v1/suspense-cache/revalidate?tags=${tags.map((tag)=>encodeURIComponent(tag)).join(",")}`, {
method: "POST",
headers: this.headers,
// @ts-expect-error not on public type
next: {
internal: true
}
});
if (res.status === 429) {
const retryAfter = res.headers.get("retry-after") || "60000";
rateLimitedUntil = Date.now() + parseInt(retryAfter);
}
if (!res.ok) {
throw new Error(`Request failed with status ${res.status}.`);
}
} catch (err) {
console.warn(`Failed to revalidate tag ${tags}`, err);
}
}
async get(...args) {
var _data_value;
const [key, ctx = {}] = args;
const { tags, softTags, kindHint, fetchIdx, fetchUrl } = ctx;
if (kindHint !== "fetch") {
return null;
}
if (Date.now() < rateLimitedUntil) {
if (DEBUG) {
console.log("rate limited");
}
return null;
}
// memory cache is cleared at the end of each request
// so that revalidate events are pulled from upstream
// on successive requests
let data = memoryCache == null ? void 0 : memoryCache.get(key);
const hasFetchKindAndMatchingTags = (data == null ? void 0 : (_data_value = data.value) == null ? void 0 : _data_value.kind) === "FETCH" && this.hasMatchingTags(tags ?? [], data.value.tags ?? []);
// Get data from fetch cache. Also check if new tags have been
// specified with the same cache key (fetch URL)
if (this.cacheEndpoint && (!data || !hasFetchKindAndMatchingTags)) {
try {
const start = Date.now();
const fetchParams = {
internal: true,
fetchType: "cache-get",
fetchUrl: fetchUrl,
fetchIdx
};
const res = await fetch(`${this.cacheEndpoint}/v1/suspense-cache/${key}`, {
method: "GET",
headers: {
...this.headers,
[CACHE_FETCH_URL_HEADER]: fetchUrl,
[CACHE_TAGS_HEADER]: (tags == null ? void 0 : tags.join(",")) || "",
[_constants.NEXT_CACHE_SOFT_TAGS_HEADER]: (softTags == null ? void 0 : softTags.join(",")) || ""
},
next: fetchParams
});
if (res.status === 429) {
const retryAfter = res.headers.get("retry-after") || "60000";
rateLimitedUntil = Date.now() + parseInt(retryAfter);
}
if (res.status === 404) {
if (DEBUG) {
console.log(`no fetch cache entry for ${key}, duration: ${Date.now() - start}ms`);
}
return null;
}
if (!res.ok) {
console.error(await res.text());
throw new Error(`invalid response from cache ${res.status}`);
}
const cached = await res.json();
if (!cached || cached.kind !== "FETCH") {
DEBUG && console.log({
cached
});
throw new Error("invalid cache value");
}
// if new tags were specified, merge those tags to the existing tags
if (cached.kind === "FETCH") {
cached.tags ??= [];
for (const tag of tags ?? []){
if (!cached.tags.includes(tag)) {
cached.tags.push(tag);
}
}
}
const cacheState = res.headers.get(CACHE_STATE_HEADER);
const age = res.headers.get("age");
data = {
value: cached,
// if it's already stale set it to a time in the past
// if not derive last modified from age
lastModified: cacheState !== "fresh" ? Date.now() - _constants.CACHE_ONE_YEAR : Date.now() - parseInt(age || "0", 10) * 1000
};
if (DEBUG) {
console.log(`got fetch cache entry for ${key}, duration: ${Date.now() - start}ms, size: ${Object.keys(cached).length}, cache-state: ${cacheState} tags: ${tags == null ? void 0 : tags.join(",")} softTags: ${softTags == null ? void 0 : softTags.join(",")}`);
}
if (data) {
memoryCache == null ? void 0 : memoryCache.set(key, data);
}
} catch (err) {
// unable to get data from fetch-cache
if (DEBUG) {
console.error(`Failed to get from fetch-cache`, err);
}
}
}
return data || null;
}
async set(...args) {
const [key, data, ctx] = args;
const newValue = (data == null ? void 0 : data.kind) === "FETCH" ? data.data : undefined;
const existingCache = memoryCache == null ? void 0 : memoryCache.get(key);
const existingValue = existingCache == null ? void 0 : existingCache.value;
if ((existingValue == null ? void 0 : existingValue.kind) === "FETCH" && Object.keys(existingValue.data).every((field)=>JSON.stringify(existingValue.data[field]) === JSON.stringify(newValue[field]))) {
if (DEBUG) {
console.log(`skipping cache set for ${key} as not modified`);
}
return;
}
const { fetchCache, fetchIdx, fetchUrl, tags } = ctx;
if (!fetchCache) return;
if (Date.now() < rateLimitedUntil) {
if (DEBUG) {
console.log("rate limited");
}
return;
}
memoryCache == null ? void 0 : memoryCache.set(key, {
value: data,
lastModified: Date.now()
});
if (this.cacheEndpoint) {
try {
const start = Date.now();
if (data !== null && "revalidate" in data) {
this.headers[CACHE_REVALIDATE_HEADER] = data.revalidate.toString();
}
if (!this.headers[CACHE_REVALIDATE_HEADER] && data !== null && "data" in data) {
this.headers[CACHE_CONTROL_VALUE_HEADER] = data.data.headers["cache-control"];
}
const body = JSON.stringify({
...data,
// we send the tags in the header instead
// of in the body here
tags: undefined
});
if (DEBUG) {
console.log("set cache", key);
}
const fetchParams = {
internal: true,
fetchType: "cache-set",
fetchUrl,
fetchIdx
};
const res = await fetch(`${this.cacheEndpoint}/v1/suspense-cache/${key}`, {
method: "POST",
headers: {
...this.headers,
[CACHE_FETCH_URL_HEADER]: fetchUrl || "",
[CACHE_TAGS_HEADER]: (tags == null ? void 0 : tags.join(",")) || ""
},
body: body,
next: fetchParams
});
if (res.status === 429) {
const retryAfter = res.headers.get("retry-after") || "60000";
rateLimitedUntil = Date.now() + parseInt(retryAfter);
}
if (!res.ok) {
DEBUG && console.log(await res.text());
throw new Error(`invalid response ${res.status}`);
}
if (DEBUG) {
console.log(`successfully set to fetch-cache for ${key}, duration: ${Date.now() - start}ms, size: ${body.length}`);
}
} catch (err) {
// unable to set to fetch-cache
if (DEBUG) {
console.error(`Failed to update fetch cache`, err);
}
}
}
return;
}
}
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