silverstripe-fulltextsearch/code/solr/reindex/handlers/SolrReindexImmediateHandler.php

<?php

use Psr\Log\LoggerInterface;

/**
 * Invokes an immediate reindex
 *
 * Internally batches of records will be invoked via shell tasks in the background
 */
class SolrReindexImmediateHandler extends SolrReindexBase {

	public function triggerReindex(LoggerInterface $logger, $batchSize, $taskName, $classes = null) {
		$this->runReindex($logger, $batchSize, $taskName, $classes);
	}

	protected function processIndex(
		LoggerInterface $logger, SolrIndex $indexInstance, $batchSize, $taskName, $classes = null
	) {
		parent::processIndex($logger, $indexInstance, $batchSize, $taskName, $classes);

		// Immediate processor needs to immediately commit after each index
		$indexInstance->getService()->commit();
	}

	/**
	 * Process a single group.
	 *
	 * Without queuedjobs, it's necessary to shell this out to a background task as this is
	 * very memory intensive.
	 *
	 * The sub-process will then invoke $processor->runGroup() in {@see Solr_Reindex::doReindex}
	 *
	 * @param LoggerInterface $logger
	 * @param SolrIndex $indexInstance Index instance
	 * @param array $state Variant state
	 * @param string $class Class to index
	 * @param int $groups Total groups
	 * @param int $group Index of group to process
	 * @param string $taskName Name of task script to run
	 */
	protected function processGroup(
		LoggerInterface $logger, SolrIndex $indexInstance, $state, $class, $groups, $group, $taskName
	) {
		// Build state
		$statevar = json_encode($state);
		if (strpos(PHP_OS, "WIN") !== false) {
			$statevar = '"'.str_replace('"', '\\"', $statevar).'"';
		} else {
			$statevar = "'".$statevar."'";
		}

		// Build script
		$indexName = $indexInstance->getIndexName();
		$scriptPath = sprintf("%s%sframework%scli-script.php", BASE_PATH, DIRECTORY_SEPARATOR, DIRECTORY_SEPARATOR);
		$scriptTask = "php {$scriptPath} dev/tasks/{$taskName}";
		$cmd = "{$scriptTask} index={$indexName} class={$class} group={$group} groups={$groups} variantstate={$statevar}";
		$cmd .= " verbose=1 2>&1";
		$logger->info("Running '$cmd'");

		// Execute script via shell
		$res = $logger ? passthru($cmd) : `$cmd`;
		if($logger) {
			$logger->info(preg_replace('/\r\n|\n/', '$0  ', $res));
		}

		// If we're in dev mode, commit more often for fun and profit
		if (Director::isDev()) {
			Solr::service($indexName)->commit();
		}

		// This will slow down things a tiny bit, but it is done so that we don't timeout to the database during a reindex
		DB::query('SELECT 1');
	}
}