// Copyright 2026 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.spanner.v1;

import "google/api/field_behavior.proto";
import "google/protobuf/struct.proto";
import "google/protobuf/timestamp.proto";
import "google/spanner/v1/keys.proto";

option csharp_namespace = "Google.Cloud.Spanner.V1";
option go_package = "cloud.google.com/go/spanner/apiv1/spannerpb;spannerpb";
option java_multiple_files = true;
option java_outer_classname = "MutationProto";
option java_package = "com.google.spanner.v1";
option php_namespace = "Google\\Cloud\\Spanner\\V1";
option ruby_package = "Google::Cloud::Spanner::V1";

// A modification to one or more Cloud Spanner rows.  Mutations can be
// applied to a Cloud Spanner database by sending them in a
// [Commit][google.spanner.v1.Spanner.Commit] call.
message Mutation {
  // Arguments to [insert][google.spanner.v1.Mutation.insert],
  // [update][google.spanner.v1.Mutation.update],
  // [insert_or_update][google.spanner.v1.Mutation.insert_or_update], and
  // [replace][google.spanner.v1.Mutation.replace] operations.
  message Write {
    // Required. The table whose rows will be written.
    string table = 1 [(google.api.field_behavior) = REQUIRED];

    // The names of the columns in
    // [table][google.spanner.v1.Mutation.Write.table] to be written.
    //
    // The list of columns must contain enough columns to allow
    // Cloud Spanner to derive values for all primary key columns in the
    // row(s) to be modified.
    repeated string columns = 2;

    // The values to be written. `values` can contain more than one
    // list of values. If it does, then multiple rows are written, one
    // for each entry in `values`. Each list in `values` must have
    // exactly as many entries as there are entries in
    // [columns][google.spanner.v1.Mutation.Write.columns] above. Sending
    // multiple lists is equivalent to sending multiple `Mutation`s, each
    // containing one `values` entry and repeating
    // [table][google.spanner.v1.Mutation.Write.table] and
    // [columns][google.spanner.v1.Mutation.Write.columns]. Individual values in
    // each list are encoded as described [here][google.spanner.v1.TypeCode].
    repeated google.protobuf.ListValue values = 3;
  }

  // Arguments to [delete][google.spanner.v1.Mutation.delete] operations.
  message Delete {
    // Required. The table whose rows will be deleted.
    string table = 1 [(google.api.field_behavior) = REQUIRED];

    // Required. The primary keys of the rows within
    // [table][google.spanner.v1.Mutation.Delete.table] to delete.  The primary
    // keys must be specified in the order in which they appear in the `PRIMARY
    // KEY()` clause of the table's equivalent DDL statement (the DDL statement
    // used to create the table). Delete is idempotent. The transaction will
    // succeed even if some or all rows do not exist.
    KeySet key_set = 2 [(google.api.field_behavior) = REQUIRED];
  }

  // Arguments to [send][google.spanner.v1.Mutation.send] operations.
  message Send {
    // Required. The queue to which the message will be sent.
    string queue = 1 [(google.api.field_behavior) = REQUIRED];

    // Required. The primary key of the message to be sent.
    google.protobuf.ListValue key = 2 [(google.api.field_behavior) = REQUIRED];

    // The time at which Spanner will begin attempting to deliver the message.
    // If `deliver_time` is not set, Spanner will deliver the message
    // immediately. If `deliver_time` is in the past, Spanner will replace it
    // with a value closer to the current time.
    google.protobuf.Timestamp deliver_time = 3;

    // The payload of the message.
    google.protobuf.Value payload = 4;
  }

  // Arguments to [ack][google.spanner.v1.Mutation.ack] operations.
  message Ack {
    // Required. The queue where the message to be acked is stored.
    string queue = 1 [(google.api.field_behavior) = REQUIRED];

    // Required. The primary key of the message to be acked.
    google.protobuf.ListValue key = 2 [(google.api.field_behavior) = REQUIRED];

    // By default, an attempt to ack a message that does not exist will fail
    // with a `NOT_FOUND` error. With `ignore_not_found` set to true, the ack
    // will succeed even if the message does not exist. This is useful for
    // unconditionally acking a message, even if it is missing or has already
    // been acked.
    bool ignore_not_found = 3;
  }

  // Required. The operation to perform.
  oneof operation {
    // Insert new rows in a table. If any of the rows already exist,
    // the write or transaction fails with error `ALREADY_EXISTS`.
    Write insert = 1;

    // Update existing rows in a table. If any of the rows does not
    // already exist, the transaction fails with error `NOT_FOUND`.
    Write update = 2;

    // Like [insert][google.spanner.v1.Mutation.insert], except that if the row
    // already exists, then its column values are overwritten with the ones
    // provided. Any column values not explicitly written are preserved.
    //
    // When using
    // [insert_or_update][google.spanner.v1.Mutation.insert_or_update], just as
    // when using [insert][google.spanner.v1.Mutation.insert], all `NOT NULL`
    // columns in the table must be given a value. This holds true even when the
    // row already exists and will therefore actually be updated.
    Write insert_or_update = 3;

    // Like [insert][google.spanner.v1.Mutation.insert], except that if the row
    // already exists, it is deleted, and the column values provided are
    // inserted instead. Unlike
    // [insert_or_update][google.spanner.v1.Mutation.insert_or_update], this
    // means any values not explicitly written become `NULL`.
    //
    // In an interleaved table, if you create the child table with the
    // `ON DELETE CASCADE` annotation, then replacing a parent row
    // also deletes the child rows. Otherwise, you must delete the
    // child rows before you replace the parent row.
    Write replace = 4;

    // Delete rows from a table. Succeeds whether or not the named
    // rows were present.
    Delete delete = 5;

    // Send a message to a queue.
    Send send = 6;

    // Ack a message from a queue.
    Ack ack = 7;
  }
}