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diff --git a/third_party/googleapis/google/datastore/admin/v1/migration.proto b/third_party/googleapis/google/datastore/admin/v1/migration.proto
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+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto3";
+
+package google.datastore.admin.v1;
+
+option csharp_namespace = "Google.Cloud.Datastore.Admin.V1";
+option go_package = "google.golang.org/genproto/googleapis/datastore/admin/v1;admin";
+option java_multiple_files = true;
+option java_outer_classname = "MigrationProto";
+option java_package = "com.google.datastore.admin.v1";
+option php_namespace = "Google\\Cloud\\Datastore\\Admin\\V1";
+option ruby_package = "Google::Cloud::Datastore::Admin::V1";
+
+// An event signifying a change in state of a [migration from Cloud Datastore to
+// Cloud Firestore in Datastore
+// mode](https://cloud.google.com/datastore/docs/upgrade-to-firestore).
+message MigrationStateEvent {
+  // The new state of the migration.
+  MigrationState state = 1;
+}
+
+// An event signifying the start of a new step in a [migration from Cloud
+// Datastore to Cloud Firestore in Datastore
+// mode](https://cloud.google.com/datastore/docs/upgrade-to-firestore).
+message MigrationProgressEvent {
+  // Concurrency modes for transactions in Cloud Firestore.
+  enum ConcurrencyMode {
+    // Unspecified.
+    CONCURRENCY_MODE_UNSPECIFIED = 0;
+
+    // Pessimistic concurrency.
+    PESSIMISTIC = 1;
+
+    // Optimistic concurrency.
+    OPTIMISTIC = 2;
+
+    // Optimistic concurrency with entity groups.
+    OPTIMISTIC_WITH_ENTITY_GROUPS = 3;
+  }
+
+  // Details for the `PREPARE` step.
+  message PrepareStepDetails {
+    // The concurrency mode this database will use when it reaches the
+    // `REDIRECT_WRITES` step.
+    ConcurrencyMode concurrency_mode = 1;
+  }
+
+  // Details for the `REDIRECT_WRITES` step.
+  message RedirectWritesStepDetails {
+    // Ths concurrency mode for this database.
+    ConcurrencyMode concurrency_mode = 1;
+  }
+
+  // The step that is starting.
+  //
+  // An event with step set to `START` indicates that the migration
+  // has been reverted back to the initial pre-migration state.
+  MigrationStep step = 1;
+
+  // Details about this step.
+  oneof step_details {
+    // Details for the `PREPARE` step.
+    PrepareStepDetails prepare_step_details = 2;
+
+    // Details for the `REDIRECT_WRITES` step.
+    RedirectWritesStepDetails redirect_writes_step_details = 3;
+  }
+}
+
+// States for a migration.
+enum MigrationState {
+  // Unspecified.
+  MIGRATION_STATE_UNSPECIFIED = 0;
+
+  // The migration is running.
+  RUNNING = 1;
+
+  // The migration is paused.
+  PAUSED = 2;
+
+  // The migration is complete.
+  COMPLETE = 3;
+}
+
+// Steps in a migration.
+enum MigrationStep {
+  // Unspecified.
+  MIGRATION_STEP_UNSPECIFIED = 0;
+
+  // Pre-migration: the database is prepared for migration.
+  PREPARE = 6;
+
+  // Start of migration.
+  START = 1;
+
+  // Writes are applied synchronously to at least one replica.
+  APPLY_WRITES_SYNCHRONOUSLY = 7;
+
+  // Data is copied to Cloud Firestore and then verified to match the data in
+  // Cloud Datastore.
+  COPY_AND_VERIFY = 2;
+
+  // Eventually-consistent reads are redirected to Cloud Firestore.
+  REDIRECT_EVENTUALLY_CONSISTENT_READS = 3;
+
+  // Strongly-consistent reads are redirected to Cloud Firestore.
+  REDIRECT_STRONGLY_CONSISTENT_READS = 4;
+
+  // Writes are redirected to Cloud Firestore.
+  REDIRECT_WRITES = 5;
+}