Merging upstream version 125.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 103 insertions, 0 deletions

diff --git a/browser/components/backup/BackupService.sys.mjs b/browser/components/backup/BackupService.sys.mjs
new file mode 100644
index 0000000000..853f4768ce
--- /dev/null
+++ b/browser/components/backup/BackupService.sys.mjs
@@ -0,0 +1,103 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import * as BackupResources from "resource:///modules/backup/BackupResources.sys.mjs";
+
+const lazy = {};
+
+ChromeUtils.defineLazyGetter(lazy, "logConsole", function () {
+  return console.createInstance({
+    prefix: "BackupService",
+    maxLogLevel: Services.prefs.getBoolPref("browser.backup.log", false)
+      ? "Debug"
+      : "Warn",
+  });
+});
+
+/**
+ * The BackupService class orchestrates the scheduling and creation of profile
+ * backups. It also does most of the heavy lifting for the restoration of a
+ * profile backup.
+ */
+export class BackupService {
+  /**
+   * The BackupService singleton instance.
+   *
+   * @static
+   * @type {BackupService|null}
+   */
+  static #instance = null;
+
+  /**
+   * Map of instantiated BackupResource classes.
+   *
+   * @type {Map<string, BackupResource>}
+   */
+  #resources = new Map();
+
+  /**
+   * Returns a reference to a BackupService singleton. If this is the first time
+   * that this getter is accessed, this causes the BackupService singleton to be
+   * be instantiated.
+   *
+   * @static
+   * @type {BackupService}
+   */
+  static init() {
+    if (this.#instance) {
+      return this.#instance;
+    }
+    this.#instance = new BackupService(BackupResources);
+    this.#instance.takeMeasurements();
+
+    return this.#instance;
+  }
+
+  /**
+   * Create a BackupService instance.
+   *
+   * @param {object} [backupResources=BackupResources] - Object containing BackupResource classes to associate with this service.
+   */
+  constructor(backupResources = BackupResources) {
+    lazy.logConsole.debug("Instantiated");
+
+    for (const resourceName in backupResources) {
+      let resource = BackupResources[resourceName];
+      this.#resources.set(resource.key, resource);
+    }
+  }
+
+  /**
+   * Take measurements of the current profile state for Telemetry.
+   *
+   * @returns {Promise<undefined>}
+   */
+  async takeMeasurements() {
+    lazy.logConsole.debug("Taking Telemetry measurements");
+
+    // Note: We're talking about kilobytes here, not kibibytes. That means
+    // 1000 bytes, and not 1024 bytes.
+    const BYTES_IN_KB = 1000;
+    const BYTES_IN_MB = 1000000;
+
+    // We'll start by measuring the available disk space on the storage
+    // device that the profile directory is on.
+    let profileDir = await IOUtils.getFile(PathUtils.profileDir);
+
+    let profDDiskSpaceBytes = profileDir.diskSpaceAvailable;
+
+    // Make the measurement fuzzier by rounding to the nearest 10MB.
+    let profDDiskSpaceMB =
+      Math.round(profDDiskSpaceBytes / BYTES_IN_MB / 100) * 100;
+
+    // And then record the value in kilobytes, since that's what everything
+    // else is going to be measured in.
+    Glean.browserBackup.profDDiskSpace.set(profDDiskSpaceMB * BYTES_IN_KB);
+
+    // Measure the size of each file we are going to backup.
+    for (let resourceClass of this.#resources.values()) {
+      await new resourceClass().measure(PathUtils.profileDir);
+    }
+  }
+}