PhabricatorSetupEngine.php
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	<?php

	final class PhabricatorSetupEngine
	extends Phobject {

	private $issues;

	public function getIssues() {
	if ($this->issues === null) {
	throw new PhutilInvalidStateException('execute');
	}

	return $this->issues;
	}

	public function getUnresolvedIssues() {
	$issues = $this->getIssues();
	$issues = mpull($issues, null, 'getIssueKey');

	$unresolved_keys = PhabricatorSetupCheck::getUnignoredIssueKeys($issues);

	return array_select_keys($issues, $unresolved_keys);
	}

	public function execute() {
	$issues = PhabricatorSetupCheck::runNormalChecks();

	$fatal_issue = null;
	foreach ($issues as $issue) {
	if ($issue->getIsFatal()) {
	$fatal_issue = $issue;
	break;
	}
	}

	if ($fatal_issue) {
	// If we've discovered a fatal, we reset any in-flight state to push
	// web hosts out of service.

	// This can happen if Phabricator starts during a disaster and some
	// databases can not be reached. We allow Phabricator to start up in
	// this situation, since it may still be able to usefully serve requests
	// without risk to data.

	// However, if databases later become reachable and we learn that they
	// are fatally misconfigured, we want to tear the world down again
	// because data may be at risk.
	PhabricatorSetupCheck::resetSetupState();

	return PhabricatorSetupCheck::newIssueResponse($issue);
	}

	$issue_keys = PhabricatorSetupCheck::getUnignoredIssueKeys($issues);

	PhabricatorSetupCheck::setOpenSetupIssueKeys(
	$issue_keys,
	$update_database = true);

	$this->issues = $issues;

	return null;
	}

	}