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/**
* Copyright 2024 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.
*/
// sample-metadata:
// title: Creates a new database with a proto column and enum
// usage: node proto-type-add-column.js <INSTANCE_ID> <DATABASE_ID> <PROJECT_ID>
'use strict';
const fs = require('fs');
function main(
instanceId = 'my-instance',
databaseId = 'my-database',
projectId = 'my-project-id',
) {
// [START spanner_add_proto_type_columns]
/**
* TODO(developer): Uncomment the following lines before running the sample.
*/
// const projectId = 'my-project-id';
// const instanceId = 'my-instance-id';
// const databaseId = 'my-database-id';
// Imports the Google Cloud client library
const {Spanner} = require('@google-cloud/spanner');
// Creates a client
const spanner = new Spanner({
projectId: projectId,
});
const databaseAdminClient = spanner.getDatabaseAdminClient();
async function protoTypeAddColumn() {
// Adds a new Proto Message column and Proto Enum column to the Singers table.
const request = [
`CREATE PROTO BUNDLE (
examples.spanner.music.SingerInfo,
examples.spanner.music.Genre,
)`,
'ALTER TABLE Singers ADD COLUMN SingerInfo examples.spanner.music.SingerInfo',
'ALTER TABLE Singers ADD COLUMN SingerInfoArray ARRAY<examples.spanner.music.SingerInfo>',
'ALTER TABLE Singers ADD COLUMN SingerGenre examples.spanner.music.Genre',
'ALTER TABLE Singers ADD COLUMN SingerGenreArray ARRAY<examples.spanner.music.Genre>',
];
// Read a proto descriptor file and convert it to a base64 string
const protoDescriptor = fs
.readFileSync('./resource/descriptors.pb')
.toString('base64');
// Alter existing table to add a column.
const [operation] = await databaseAdminClient.updateDatabaseDdl({
database: databaseAdminClient.databasePath(
projectId,
instanceId,
databaseId,
),
statements: request,
protoDescriptors: protoDescriptor,
});
console.log(`Waiting for operation on ${databaseId} to complete...`);
await operation.promise();
console.log(
`Altered table "Singers" on database ${databaseId} on instance ${instanceId} with proto descriptors.`,
);
}
protoTypeAddColumn();
// [END spanner_add_proto_type_columns]
}
process.on('unhandledRejection', err => {
console.error(err.message);
process.exitCode = 1;
});
main(...process.argv.slice(2));