1 files changed, 64 insertions, 0 deletions
diff --git a/browser/components/asrouter/modules/ASRouterDefaultConfig.sys.mjs b/browser/components/asrouter/modules/ASRouterDefaultConfig.sys.mjs
new file mode 100644
index 0000000000..e81380b1e2
--- /dev/null
+++ b/browser/components/asrouter/modules/ASRouterDefaultConfig.sys.mjs
@@ -0,0 +1,64 @@
+/* vim: set ts=2 sw=2 sts=2 et tw=80: */
+/* 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 { ASRouter } from "resource:///modules/asrouter/ASRouter.sys.mjs";
+import { TelemetryFeed } from "resource://activity-stream/lib/TelemetryFeed.sys.mjs";
+import { ASRouterParentProcessMessageHandler } from "resource:///modules/asrouter/ASRouterParentProcessMessageHandler.sys.mjs";
+
+// We use importESModule here instead of static import so that
+// the Karma test environment won't choke on this module. This
+// is because the Karma test environment does not actually rely
+// on SpecialMessageActions, and overrides importESModule to be
+// a no-op (which can't be done for a static import statement).
+
+// eslint-disable-next-line mozilla/use-static-import
+const { SpecialMessageActions } = ChromeUtils.importESModule(
+  "resource://messaging-system/lib/SpecialMessageActions.sys.mjs"
+);
+
+import { ASRouterPreferences } from "resource:///modules/asrouter/ASRouterPreferences.sys.mjs";
+import { QueryCache } from "resource:///modules/asrouter/ASRouterTargeting.sys.mjs";
+import { ActivityStreamStorage } from "resource://activity-stream/lib/ActivityStreamStorage.sys.mjs";
+
+const createStorage = async telemetryFeed => {
+  // "snippets" is the name of one storage space, but these days it is used
+  // not for snippet-related data (snippets were removed in bug 1715158),
+  // but storage for impression or session data for all ASRouter messages.
+  //
+  // We keep the name "snippets" to avoid having to do an IndexedDB database
+  // migration.
+  const dbStore = new ActivityStreamStorage({
+    storeNames: ["sectionPrefs", "snippets"],
+    telemetry: {
+      handleUndesiredEvent: e => telemetryFeed.SendASRouterUndesiredEvent(e),
+    },
+  });
+  // Accessing the db causes the object stores to be created / migrated.
+  // This needs to happen before other instances try to access the db, which
+  // would update only a subset of the stores to the latest version.
+  try {
+    await dbStore.db; // eslint-disable-line no-unused-expressions
+  } catch (e) {
+    return Promise.reject(e);
+  }
+  return dbStore.getDbTable("snippets");
+};
+
+export const ASRouterDefaultConfig = () => {
+  const router = ASRouter;
+  const telemetry = new TelemetryFeed();
+  const messageHandler = new ASRouterParentProcessMessageHandler({
+    router,
+    preferences: ASRouterPreferences,
+    specialMessageActions: SpecialMessageActions,
+    queryCache: QueryCache,
+    sendTelemetry: telemetry.onAction.bind(telemetry),
+  });
+  return {
+    router,
+    messageHandler,
+    createStorage: createStorage.bind(null, telemetry),
+  };
+};