Function main

spanner/index-create.js:21–72

(
  instanceId = 'my-instance',
  databaseId = 'my-database',
  projectId = 'my-project-id'
)

'use strict';

function main(
  instanceId = 'my-instance',
  databaseId = 'my-database',
  projectId = 'my-project-id'
) {
  // [START spanner_create_index]
  /**
   * TODO(developer): Uncomment these variables before running the sample.
   */
  // const instanceId = 'my-instance';
  // const databaseId = 'my-database';
  // const projectId = 'my-project-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 createIndex() {
    const request = ['CREATE INDEX AlbumsByAlbumTitle ON Albums(AlbumTitle)'];

    // Creates a new index in the database
    try {
      const [operation] = await databaseAdminClient.updateDatabaseDdl({
        database: databaseAdminClient.databasePath(
          projectId,
          instanceId,
          databaseId
        ),
        statements: request,
      });

      console.log('Waiting for operation to complete...');
      await operation.promise();

      console.log('Added the AlbumsByAlbumTitle index.');
    } catch (err) {
      console.error('Failed to create index:', err.message || err);
    } finally {
      // Close the spanner client when finished.
      // The databaseAdminClient does not require explicit closure. The closure of the Spanner client will automatically close the databaseAdminClient.
      spanner.close();
    }
  }
  createIndex();
  // [END spanner_create_index]
}

main(...process.argv.slice(2));