Port Brave Sync server to Rust

Use SQLite for persistence and generate Rust protobuf bindings at build time.

Add Docker image support for containerized deployment.

Co-Authored-By: codex <[email protected]>

schema/protobuf/sync_pb/user_event_specifics.proto

@@ -0,0 +1,142 @@
+// Copyright 2017 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// Sync protocol datatype extension for user events.
+
+// If you change or add any fields in this file, update proto_visitors.h and
+// potentially proto_enum_conversions.{h, cc}.
+
+syntax = "proto2";
+
+option go_package = "./sync_pb";
+
+option java_multiple_files = true;
+option java_package = "org.chromium.components.sync.protocol";
+
+option optimize_for = LITE_RUNTIME;
+
+package sync_pb;
+
+import "gaia_password_reuse.proto";
+
+message UserEventSpecifics {
+  // Time of event, as measured by client in microseconds since Windows epoch.
+  optional int64 event_time_usec = 1;
+
+  // The |global_id| field of the associated navigation, if there is one.
+  optional int64 navigation_id = 2;
+
+  // On startup we generate a new random id to identify which FieldTrialEvents
+  // other events belonged to.
+  optional fixed64 session_id = 3;
+
+  // 4-7 reserved for future scalars.
+
+  // Used for testing and debugging EventLog system.
+  message Test {}
+
+  // Language detection output.
+  message LanguageDetection {
+    option deprecated = true;
+
+    message Language {
+      // ISO 639 language code will be used.
+      optional string language_code = 1;
+      // Whether the detected language is reliable, note this is determined by
+      // the CLD3.
+      optional bool is_reliable = 2;
+    }
+    // Top n languages. Typically we just log the top language, but for page
+    // that we're not confident about, we may log up to 3 top languages in
+    // descending order.
+    repeated Language detected_languages = 1;
+    // Adopted language code is the code of final determined language.
+    // It will be stored only if it's different from the first detected
+    // language.
+    optional string adopted_language_code = 2;
+  }
+
+  // User translated a page or interacted with translate suggestion.
+  message Translation {
+    option deprecated = true;
+
+    // Source language of the translation.
+    optional string from_language_code = 1;
+    // Target language of the translation.
+    optional string to_language_code = 2;
+    enum Interaction {
+      UNKNOWN = 0;
+      ACCEPT = 1;
+      DECLINE = 2;
+      // This happens when user scroll or click outside the UI without
+      // translation.
+      IGNORED = 3;
+      // This happens when user choose to close the translation window without
+      // translation.
+      DISMISSED = 4;
+      // User manually entered either language.
+      // In this case, from_language_code and to_language_code will be user
+      // chosen values.
+      MANUAL = 5;
+      // User choose to revert the translation, in this case, from_language_code
+      // and to_language_code will be previous chosen values.
+      TRANSLATION_REVERTED = 6;
+      // Automatically triggered translation.
+      // User sets always translate in user settings.
+      AUTO_TRANSLATION_BY_PREF = 7;
+      // User navigated through a click from a translated page.
+      AUTO_TRANSLATION_BY_LINK = 8;
+      // Failed to initialize the translate script, this can happen for iOS due
+      // to CSPs.
+      INITIALIZATION_ERROR = 9;
+    }
+    optional Interaction interaction = 3;
+  }
+
+  // Logged when the user logs into Google, and at least once per 28d.
+  message GaiaPasswordCaptured {
+    enum EventTrigger {
+      UNSPECIFIED = 0;
+      // Event added because user logged in.
+      USER_LOGGED_IN = 1;
+      // Event added because 28d timer fired.
+      EXPIRED_28D_TIMER = 2;
+    }
+    optional EventTrigger event_trigger = 1;
+  }
+
+  message FlocIdComputed {
+    enum EventTrigger {
+      UNSPECIFIED = 0;
+      // Event added because the floc id is computed for the 1st floc session.
+      NEW = 1;
+      // Event added because the floc id is re-computed due to a long period of
+      // time has passed since the last computation.
+      REFRESHED = 2;
+      // Event added because the floc id is re-computed due to history deletion.
+      HISTORY_DELETE = 3;
+    }
+    reserved 1;
+    reserved "event_trigger";
+
+    // If not set, it means that the floc is disabled.
+    optional uint64 floc_id = 2;
+  }
+
+  oneof event {
+    Test test_event = 8;
+    LanguageDetection language_detection_event = 10 [deprecated = true];
+    Translation translation_event = 11 [deprecated = true];
+    // Happens when a user types their Google account password on another site.
+    GaiaPasswordReuse gaia_password_reuse_event = 104;
+    GaiaPasswordCaptured gaia_password_captured_event = 15;
+    FlocIdComputed floc_id_computed_event = 16;
+  }
+
+  reserved "field_trial_event";
+  reserved 9;
+
+  reserved "user_consent";
+  reserved 12;
+}