Traverse a directory and add all 'unknown' virtual machines to vagrants index.

rebuild-vagrant-machine-index.php

<?php

/**
 * Traverse through folder and rebuild vagrant machine index
 *
 * @author Alexander Goller <hello@alpipego.com>
 * @license MIT
 */

// setup
define( 'MACHINE_INDEX', $_SERVER['HOME'] . '/.vagrant.d/data/machine-index/index' );
define( 'SEARCH_PATH', $_SERVER['HOME'] . '/Sites' ); // possibly change this

// read the index
$index        = (array) json_decode( file_get_contents( MACHINE_INDEX ) );
$machineIndex = (array) $index['machines'];
$count        = count( $machineIndex );
$objects      = new RecursiveIteratorIterator( new RecursiveDirectoryIterator( SEARCH_PATH ), RecursiveIteratorIterator::SELF_FIRST );
/**
 * @var string $name
 * @var SplFileInfo $object
 */
foreach ( $objects as $path => $object ) {
	if ( file_exists( $path . '/Vagrantfile' ) ) {
		echo '.';
		$parent = realpath( $path );
	}
	if ( $object->getFilename() === '.vagrant' ) {
		$vagrants = new RecursiveIteratorIterator( new RecursiveDirectoryIterator( $path, RecursiveDirectoryIterator::SKIP_DOTS ), RecursiveIteratorIterator::SELF_FIRST );
		$j        = 0;
		/**
		 * @var string $vagrantName
		 * @var SplFileInfo $vagrant
		 */
		foreach ( $vagrants as $vagrantName => $vagrant ) {
			// get machine name
			if ( $j === 1 ) {
				$name = $vagrant->getFilename();
			}
			$j ++;
			if ( is_file( $vagrantName . '/index_uuid' ) ) {
				echo '+';
				$id = file_get_contents( $vagrantName . '/index_uuid' );
				// if this machine is already registered, skip
				if ( array_key_exists( $id, $machineIndex ) ) {
					continue;
				}
				// get provider name
				$provider = $vagrant->getFilename();
				// get machine state
				$stateArr = [];
				$state    = '';
				exec( 'cd ' . $parent . ' && vagrant status', $stateArr );
				foreach ( $stateArr as $line ) {
					if ( preg_match( "%$name\h+([a-z]+)\h\($provider\)%", $line, $matches ) ) {
						$state = $matches[1];
					}
				}
				// add machine
				$machineIndex[ $id ] = [
					'local_data_path'  => $path,
					'name'             => $name,
					'provider'         => $provider,
					'state'            => $state,
					'vagrantfile_name' => null,
					'vagrantfile_path' => $parent,
					'updated_at'       => null,
				];
			}
		}
	}
}
$index['machines'] = $machineIndex;
$added             = count( $machineIndex ) - $count;
if ( file_put_contents( MACHINE_INDEX, json_encode( $index ) ) !== false ) {
	echo "\n\nSuccesfully added $count VMs\n";
	exec( 'vagrant global-status' );
}