// 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

//

// https://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.

// This is a generated sample, using the typeless sample bot. Please

// look for the source TypeScript sample (.ts) for modifications.

'use strict';

/**

* This sample demonstrates how to perform basic operations on topics with

* the Google Cloud Pub/Sub API.

*

* For more information, see the README.md under /pubsub and the documentation

* at https://cloud.google.com/pubsub/docs.

*/

// sample-metadata:

// title: Create Topic With Schema Revisions

// description: Creates a new topic, with a schema definition and revisions.

// usage: node createTopicWithSchema.js <topic-name> <schema-name> <encoding-type> <first-revision-id> <last-revision-id>

// [START pubsub_create_topic_with_schema_revisions]

/**

* TODO(developer): Uncomment these variables before running the sample.

*/

// const topicNameOrId = 'YOUR_TOPIC_NAME_OR_ID';

// const schemaName = 'YOUR_SCHEMA_NAME_OR_ID';

// const encodingType = 'BINARY';

// const firstRevisionId = 'YOUR_REVISION_ID';

// const lastRevisionId = 'YOUR_REVISION_ID';

// Imports the Google Cloud client library

const {PubSub} = require('@google-cloud/pubsub');

// Creates a client; cache this for further use

const pubSubClient = new PubSub();

async function createTopicWithSchemaRevisions(

topicNameOrId,

schemaNameOrId,

encodingType,

firstRevisionId,

lastRevisionId,

) {

// Get the fully qualified schema name.

const schema = pubSubClient.schema(schemaNameOrId);

const fullName = await schema.getName();

// Creates a new topic with a schema. Note that you might also

// pass Encodings.Json or Encodings.Binary here.

await pubSubClient.createTopic({

name: topicNameOrId,

schemaSettings: {

schema: fullName,

encoding: encodingType,

firstRevisionId,

lastRevisionId,

},

});

console.log(`Topic ${topicNameOrId} created with schema ${fullName}.`);

}

// [END pubsub_create_topic_with_schema_revisions]

function main(

topicNameOrId = 'YOUR_TOPIC_NAME_OR_ID',

schemaNameOrId = 'YOUR_SCHEMA_NAME_OR_ID',

encodingType = 'BINARY',

firstRevisionId = 'YOUR_REVISION_ID',

lastRevisionId = 'YOUR_REVISION_ID',

) {

createTopicWithSchemaRevisions(

topicNameOrId,

schemaNameOrId,

encodingType,

firstRevisionId,

lastRevisionId,

).catch(err => {

console.error(err.message);

process.exitCode = 1;

});

}

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