From a272cd66a4542603a9aae63f507cb4e8ac48efe4 Mon Sep 17 00:00:00 2001
From: sebastien <lorber.sebastien@gmail.com>
Date: Tue, 22 Oct 2024 09:55:48 +0200
Subject: [PATCH] refactor + comment

---
 .../docusaurus/src/commands/build/build.ts    | 38 ++++++++++---------
 .../src/commands/build/buildLocale.ts         | 12 +++---
 2 files changed, 28 insertions(+), 22 deletions(-)

diff --git a/packages/docusaurus/src/commands/build/build.ts b/packages/docusaurus/src/commands/build/build.ts
index d05441b07480..d0334e34bf80 100644
--- a/packages/docusaurus/src/commands/build/build.ts
+++ b/packages/docusaurus/src/commands/build/build.ts
@@ -10,7 +10,7 @@ import logger, {PerfLogger} from '@docusaurus/logger';
 import {mapAsyncSequential} from '@docusaurus/utils';
 import {loadContext, type LoadContextParams} from '../../server/site';
 import {loadI18n} from '../../server/i18n';
-import {buildLocale} from './buildLocale';
+import {buildLocale, type BuildLocaleParams} from './buildLocale';
 
 export type BuildCLIOptions = Pick<
   LoadContextParams,
@@ -90,29 +90,33 @@ async function getLocalesToBuild({
   ];
 }
 
-async function tryToBuildLocale({
-  siteDir,
-  locale,
-  cliOptions,
-}: {
-  siteDir: string;
-  locale: string;
-  cliOptions: BuildCLIOptions;
-}) {
+async function tryToBuildLocale(params: BuildLocaleParams) {
   try {
-    await PerfLogger.async(`${logger.name(locale)}`, async () => {
-      await buildLocale({
-        siteDir,
-        locale,
-        cliOptions,
-      });
+    await PerfLogger.async(`${logger.name(params.locale)}`, async () => {
+      // Note: I tried to run buildLocale in worker_threads (still sequentially)
+      // It didn't work and I got SIGSEGV / SIGBUS errors
+      // See https://x.com/sebastienlorber/status/1848413716372480338
+      await runBuildLocaleTask(params);
     });
   } catch (err) {
     throw new Error(
-      logger.interpolate`Unable to build website for locale name=${locale}.`,
+      logger.interpolate`Unable to build website for locale name=${params.locale}.`,
       {
         cause: err,
       },
     );
   }
 }
+
+async function runBuildLocaleTask(params: BuildLocaleParams) {
+  // Note: I tried to run buildLocale task in worker_threads (sequentially)
+  // It didn't work and I got SIGSEGV / SIGBUS errors
+  // Goal was to isolate memory of each localized site build
+  // See also https://x.com/sebastienlorber/status/1848413716372480338
+  //
+  // Running in child_process worked but is more complex and requires
+  // specifying the memory of the child process + weird logging issues to fix
+  //
+  // Note in the future we could try to enable concurrent localized site builds
+  await buildLocale(params);
+}
diff --git a/packages/docusaurus/src/commands/build/buildLocale.ts b/packages/docusaurus/src/commands/build/buildLocale.ts
index 49b847c0db1b..1d8c30f219e9 100644
--- a/packages/docusaurus/src/commands/build/buildLocale.ts
+++ b/packages/docusaurus/src/commands/build/buildLocale.ts
@@ -27,15 +27,17 @@ import type {
 import type {SiteCollectedData} from '../../common';
 import {BuildCLIOptions} from './build';
 
+export type BuildLocaleParams = {
+  siteDir: string;
+  locale: string;
+  cliOptions: Partial<BuildCLIOptions>;
+};
+
 export async function buildLocale({
   siteDir,
   locale,
   cliOptions,
-}: {
-  siteDir: string;
-  locale: string;
-  cliOptions: Partial<BuildCLIOptions>;
-}): Promise<void> {
+}: BuildLocaleParams): Promise<void> {
   // Temporary workaround to unlock the ability to translate the site config
   // We'll remove it if a better official API can be designed
   // See https://github.com/facebook/docusaurus/issues/4542