From fea5cec5eb9b26cbf42f98f6ef79a8e01028af0e Mon Sep 17 00:00:00 2001
From: Jeremy Davis <jeremy.davis@sonarsource.com>
Date: Tue, 5 Oct 2021 17:00:10 +0200
Subject: [NO-JIRA] Fix frontend caching issue

---
 server/sonar-web/config/esbuild-html-plugin.js | 60 ++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 server/sonar-web/config/esbuild-html-plugin.js

(limited to 'server/sonar-web/config/esbuild-html-plugin.js')

diff --git a/server/sonar-web/config/esbuild-html-plugin.js b/server/sonar-web/config/esbuild-html-plugin.js
new file mode 100644
index 00000000000..7ab0a9ff5f0
--- /dev/null
+++ b/server/sonar-web/config/esbuild-html-plugin.js
@@ -0,0 +1,60 @@
+/*
+ * SonarQube
+ * Copyright (C) 2009-2021 SonarSource SA
+ * mailto:info AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+const fs = require('fs-extra');
+const path = require('path');
+const paths = require('./paths');
+const htmlTemplate = require('./indexHtmlTemplate');
+
+function extractHash(filename) {
+  const regexp = /out([\w]+)\./;
+  const result = filename.match(regexp);
+  if (!result) {
+    throw Error('filename format error: could not extract hash');
+  }
+
+  return result[1];
+}
+
+/*
+ * This plugin generates a index.html file from the template,
+ * injecting the right hash values to the imported js and css files
+ */
+module.exports = () => ({
+  name: 'html-plugin',
+  setup({ onEnd }) {
+    onEnd(result => {
+      const files = result.metafile.outputs;
+
+      let cssHash;
+      let jsHash;
+      for (const filename in files) {
+        if (filename.endsWith('css')) {
+          cssHash = extractHash(filename);
+        } else if (filename.endsWith('js')) {
+          jsHash = extractHash(filename);
+        }
+      }
+
+      const htmlContents = htmlTemplate(cssHash, jsHash);
+
+      fs.writeFile(path.join(paths.appBuild, 'index.html'), htmlContents);
+    });
+  }
+});
-- 
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