Create Couchbase Views on the fly. Automate the view creation process in Couchbase.

cb-views-automate.js

/**
 * Create Couchbase Views on the fly
 * v1.0.0 June 15, 2016
 * Dipesh Bhardwaj
 * Code Style - ES6 Javascript | ES Lint | AirBnB Arrow Functions
 * This script contains example for sample beer bucket, which comes
 * pre-loaded with Couchbase.
 * Create a `startupCheck.js` script in your application, if not already exist
 * and call this script through it to create all your Couchbase views
 * during app initialization. This script first checks if the views are already
 * exist, if not then only it will create new views. Also it checks for those
 * which are already created and simply leave them as is and create new views.
 *
 * Replace all static values with your configurations defined in config files.
 */

/* eslint-disable no-console */

// Load the Couchbase driver and connect to the cluster
import couchbase from 'couchbase';

const cluster = new couchbase.Cluster('localhost:8091');

// It is important to make this async call as otherwise you will try create the
// view before the connection to couchbase is established, resulting in a failure.
const bsBucket = cluster.openBucket('beer-sample', err => {
    if (err) {
        console.error('error:', err);
    } else {
        console.info('connected');
    }
});

// If connected, then create the views
bsBucket.on('connect', err => {
    if (err) {
        console.error(`Failed to connect to cluster: ${err}`);
        process.exit(1);
    } else {
        console.info('Couchbase Connected');
        const bManager = bsBucket.manager('Administrator', 'password');

        // Update the beer view, to index beers 'by_name'.
        bManager.insertDesignDocument('beer', {
            views: {
                beer_by_name: {
                    map: (doc, meta) => {      // eslint-disable-line no-unused-vars
                        if (doc.type && doc.type === 'beer') {
                            emit(doc.name, null);     // eslint-disable-line no-undef
                        }
                    }
                }
            }
        }, error => {
            // Tell me the error and exit
            if (error) {
                console.error('ERROR', error);
                process.exit(0);
            } else {
                // All good, exit
                console.info('Done!');
                process.exit(0);
            }
        });
    }
});