@paroicms/server/dist/site-context/site-context.js

The ParoiCMS server

import { ApiError } from "@paroicms/public-server-lib";
import { registeredSites } from "../context.js";
import { isShuttingDown } from "../maintenance/shutdown.js";
import { initializeRequestTracker, setRequestTrackerState, waitForPendingRequests, } from "../request-tracking/request-state.js";
import { loadSiteContext } from "./load-site-context.js";
const MAX_IDLE_TIME = 1000 * 60 * 20;
const promises = new Map();
const activeContextAndTimes = new Map();
export function getActiveSiteContexts() {
    return Array.from(activeContextAndTimes.values()).map((item) => item.siteContext);
}
export function getActiveSiteContext(fqdn, options = {}) {
    const item = activeContextAndTimes.get(fqdn);
    if (item) {
        updateLastUseTime(fqdn);
        return item.siteContext;
    }
    if (options.returnsUndef)
        return;
    throw new Error(`should have the site-context for '${fqdn}'`);
}
export function getSiteContext(fqdn, options = {}) {
    if (isShuttingDown())
        throw new ApiError("Server shutting down", 503);
    let promise = promises.get(fqdn);
    if (promise) {
        updateLastUseTime(fqdn);
    }
    else {
        const regSite = registeredSites.get(fqdn);
        if (!regSite) {
            if (options.returnsUndef)
                return Promise.resolve(undefined);
            throw new ApiError(`Site not found: "${fqdn}"`, 404);
        }
        promise = wrapCreateSiteContext(regSite);
        promises.set(fqdn, promise);
    }
    return promise;
}
export async function unloadSiteContext(siteContext) {
    const { logger } = siteContext;
    if (siteContext.status === "migration") {
        await siteContext.cn.destroy();
    }
    else if (siteContext.status === "ready") {
        setRequestTrackerState(siteContext, "gracefulShutdown");
        await waitForPendingRequests(siteContext, 30_000);
        await siteContext.cn.destroy();
        await siteContext.textCache.close();
        await siteContext.imageCache.close();
        await siteContext.mediaStorage.close();
    }
    else {
        throw new Error(`Invalid site context status "${siteContext.status}"`);
    }
    promises.delete(siteContext.fqdn);
    activeContextAndTimes.delete(siteContext.fqdn);
    logger.info("Site unloaded ↘");
}
async function wrapCreateSiteContext(regSite) {
    const siteContext = await loadSiteContext(regSite);
    if (siteContext.status === "ready") {
        initializeRequestTracker(siteContext);
    }
    activeContextAndTimes.set(regSite.fqdn, {
        siteContext,
        lastUseTimeMs: Date.now(),
    });
    siteContext.logger.info("Site loaded ↗");
    return siteContext;
}
function updateLastUseTime(fqdn) {
    const item = activeContextAndTimes.get(fqdn);
    if (item) {
        item.lastUseTimeMs = Date.now();
    }
}
export function watchForIdleSiteContexts() {
    const intervalId = setInterval(closeIdlingSiteContexts, 1000 * 60 * 5);
    intervalId.unref();
}
async function closeIdlingSiteContexts() {
    const limit = Date.now() - MAX_IDLE_TIME;
    for (const { lastUseTimeMs, siteContext } of activeContextAndTimes.values()) {
        if (lastUseTimeMs >= limit)
            continue;
        try {
            await unloadSiteContext(siteContext);
        }
        catch (error) {
            siteContext.logger.error("Error unloading site", error);
        }
    }
}
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