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index.js
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index.js
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// Copyright 2017 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.
'use strict';
// [START spanner_functions_quickstart]
// Imports the Google Cloud client library
const {Spanner} = require('@google-cloud/spanner');
// Imports the functions framework to register your HTTP function
const functions = require('@google-cloud/functions-framework');
// Instantiates a client
const spanner = new Spanner();
// Your Cloud Spanner instance ID
const instanceId = 'test-instance';
// Your Cloud Spanner database ID
const databaseId = 'example-db';
/**
* HTTP Cloud Function.
*
* @param {Object} req Cloud Function request context.
* @param {Object} res Cloud Function response context.
*/
functions.http('spannerQuickstart', async (req, res) => {
// Gets a reference to a Cloud Spanner instance and database
const instance = spanner.instance(instanceId);
const database = instance.database(databaseId);
// The query to execute
const query = {
sql: 'SELECT * FROM Albums',
};
// Execute the query
try {
const results = await database.run(query);
const rows = results[0].map(row => row.toJSON());
rows.forEach(row => {
res.write(
`SingerId: ${row.SingerId}, ` +
`AlbumId: ${row.AlbumId}, ` +
`AlbumTitle: ${row.AlbumTitle}\n`
);
});
res.status(200).end();
} catch (err) {
res.status(500).send(`Error querying Spanner: ${err}`);
}
});
// [END spanner_functions_quickstart]