PhabricatorConfigClusterRepositoriesController.php
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PhabricatorConfigClusterRepositoriesController.php
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	<?php

	final class PhabricatorConfigClusterRepositoriesController
	extends PhabricatorConfigController {

	public function handleRequest(AphrontRequest $request) {
	$nav = $this->buildSideNavView();
	$nav->selectFilter('cluster/repositories/');

	$title = pht('Repository Servers');

	$crumbs = $this
	->buildApplicationCrumbs($nav)
	->addTextCrumb(pht('Repository Servers'));

	$repository_status = $this->buildClusterRepositoryStatus();

	$view = id(new PHUITwoColumnView())
	->setNavigation($nav)
	->setMainColumn($repository_status);

	return $this->newPage()
	->setTitle($title)
	->setCrumbs($crumbs)
	->appendChild($view);
	}

	private function buildClusterRepositoryStatus() {
	$viewer = $this->getViewer();

	Javelin::initBehavior('phabricator-tooltips');

	$all_services = id(new AlmanacServiceQuery())
	->setViewer($viewer)
	->withServiceTypes(
	array(
	AlmanacClusterRepositoryServiceType::SERVICETYPE,
	))
	->needBindings(true)
	->needProperties(true)
	->execute();
	$all_services = mpull($all_services, null, 'getPHID');

	$all_repositories = id(new PhabricatorRepositoryQuery())
	->setViewer($viewer)
	->withTypes(
	array(
	PhabricatorRepositoryType::REPOSITORY_TYPE_GIT,
	))
	->execute();
	$all_repositories = mpull($all_repositories, null, 'getPHID');

	$all_versions = id(new PhabricatorRepositoryWorkingCopyVersion())
	->loadAll();

	$all_devices = $this->getDevices($all_services, false);
	$all_active_devices = $this->getDevices($all_services, true);

	$leader_versions = $this->getLeaderVersionsByRepository(
	$all_repositories,
	$all_versions,
	$all_active_devices);

	$push_times = $this->loadLeaderPushTimes($leader_versions);

	$repository_groups = mgroup($all_repositories, 'getAlmanacServicePHID');
	$repository_versions = mgroup($all_versions, 'getRepositoryPHID');

	$rows = array();
	foreach ($all_services as $service) {
	$service_phid = $service->getPHID();

	if ($service->getAlmanacPropertyValue('closed')) {
	$status_icon = 'fa-folder';
	$status_tip = pht('Closed');
	} else {
	$status_icon = 'fa-folder-open green';
	$status_tip = pht('Open');
	}

	$status_icon = id(new PHUIIconView())
	->setIcon($status_icon)
	->addSigil('has-tooltip')
	->setMetadata(
	array(
	'tip' => $status_tip,
	));

	$devices = idx($all_devices, $service_phid, array());
	$active_devices = idx($all_active_devices, $service_phid, array());

	$device_icon = 'fa-server green';

	$device_label = pht(
	'%s Active',
	phutil_count($active_devices));

	$device_status = array(
	id(new PHUIIconView())->setIcon($device_icon),
	' ',
	$device_label,
	);

	$repositories = idx($repository_groups, $service_phid, array());

	$repository_status = pht(
	'%s',
	phutil_count($repositories));

	$no_leader = array();
	$full_sync = array();
	$partial_sync = array();
	$no_sync = array();
	$lag = array();

	// Threshold in seconds before we start complaining that repositories
	// are not synchronized when there is only one leader.
	$threshold = phutil_units('5 minutes in seconds');

	$messages = array();

	foreach ($repositories as $repository) {
	$repository_phid = $repository->getPHID();

	$leader_version = idx($leader_versions, $repository_phid);
	if ($leader_version === null) {
	$no_leader[] = $repository;
	$messages[] = pht(
	'Repository %s has an ambiguous leader.',
	$viewer->renderHandle($repository_phid)->render());
	continue;
	}

	$versions = idx($repository_versions, $repository_phid, array());

	$leaders = 0;
	foreach ($versions as $version) {
	if ($version->getRepositoryVersion() == $leader_version) {
	$leaders++;
	}
	}

	if ($leaders == count($active_devices)) {
	$full_sync[] = $repository;
	} else {
	$push_epoch = idx($push_times, $repository_phid);
	if ($push_epoch) {
	$duration = (PhabricatorTime::getNow() - $push_epoch);
	$lag[] = $duration;
	} else {
	$duration = null;
	}

	if ($leaders >= 2 \|\| ($duration && ($duration < $threshold))) {
	$partial_sync[] = $repository;
	} else {
	$no_sync[] = $repository;
	if ($push_epoch) {
	$messages[] = pht(
	'Repository %s has unreplicated changes (for %s).',
	$viewer->renderHandle($repository_phid)->render(),
	phutil_format_relative_time($duration));
	} else {
	$messages[] = pht(
	'Repository %s has unreplicated changes.',
	$viewer->renderHandle($repository_phid)->render());
	}
	}

	}
	}

	$with_lag = false;

	if ($no_leader) {
	$replication_icon = 'fa-times red';
	$replication_label = pht('Ambiguous Leader');
	} else if ($no_sync) {
	$replication_icon = 'fa-refresh yellow';
	$replication_label = pht('Unsynchronized');
	$with_lag = true;
	} else if ($partial_sync) {
	$replication_icon = 'fa-refresh green';
	$replication_label = pht('Partial');
	$with_lag = true;
	} else if ($full_sync) {
	$replication_icon = 'fa-check green';
	$replication_label = pht('Synchronized');
	} else {
	$replication_icon = 'fa-times grey';
	$replication_label = pht('No Repositories');
	}

	if ($with_lag && $lag) {
	$lag_status = phutil_format_relative_time(max($lag));
	$lag_status = pht(' (%s)', $lag_status);
	} else {
	$lag_status = null;
	}

	$replication_status = array(
	id(new PHUIIconView())->setIcon($replication_icon),
	' ',
	$replication_label,
	$lag_status,
	);

	$messages = phutil_implode_html(phutil_tag('br'), $messages);

	$rows[] = array(
	$status_icon,
	$viewer->renderHandle($service->getPHID()),
	$device_status,
	$repository_status,
	$replication_status,
	$messages,
	);
	}


	$table = id(new AphrontTableView($rows))
	->setNoDataString(
	pht('No repository cluster services are configured.'))
	->setHeaders(
	array(
	null,
	pht('Service'),
	pht('Devices'),
	pht('Repos'),
	pht('Sync'),
	pht('Messages'),
	))
	->setColumnClasses(
	array(
	null,
	'pri',
	null,
	null,
	null,
	'wide',
	));

	$doc_href = PhabricatorEnv::getDoclink('Cluster: Repositories');

	$header = id(new PHUIHeaderView())
	->setHeader(pht('Cluster Repository Status'))
	->addActionLink(
	id(new PHUIButtonView())
	->setIcon('fa-book')
	->setHref($doc_href)
	->setTag('a')
	->setText(pht('Documentation')));

	return id(new PHUIObjectBoxView())
	->setHeader($header)
	->setBackground(PHUIObjectBoxView::BLUE_PROPERTY)
	->setTable($table);
	}

	private function getDevices(
	array $all_services,
	$only_active) {

	$devices = array();
	foreach ($all_services as $service) {
	$map = array();
	foreach ($service->getBindings() as $binding) {
	if ($only_active && $binding->getIsDisabled()) {
	continue;
	}

	$device = $binding->getDevice();
	$device_phid = $device->getPHID();

	$map[$device_phid] = $device;
	}
	$devices[$service->getPHID()] = $map;
	}

	return $devices;
	}

	private function getLeaderVersionsByRepository(
	array $all_repositories,
	array $all_versions,
	array $active_devices) {

	$version_map = mgroup($all_versions, 'getRepositoryPHID');

	$result = array();
	foreach ($all_repositories as $repository_phid => $repository) {
	$service_phid = $repository->getAlmanacServicePHID();
	if (!$service_phid) {
	continue;
	}

	$devices = idx($active_devices, $service_phid);
	if (!$devices) {
	continue;
	}

	$versions = idx($version_map, $repository_phid, array());
	$versions = mpull($versions, null, 'getDevicePHID');
	$versions = array_select_keys($versions, array_keys($devices));
	if (!$versions) {
	continue;
	}

	$leader = (int)max(mpull($versions, 'getRepositoryVersion'));
	$result[$repository_phid] = $leader;
	}

	return $result;
	}

	private function loadLeaderPushTimes(array $leader_versions) {
	$viewer = $this->getViewer();

	if (!$leader_versions) {
	return array();
	}

	$events = id(new PhabricatorRepositoryPushEventQuery())
	->setViewer($viewer)
	->withIDs($leader_versions)
	->execute();
	$events = mpull($events, null, 'getID');

	$result = array();
	foreach ($leader_versions as $key => $version) {
	$event = idx($events, $version);
	if (!$event) {
	continue;
	}

	$result[$key] = $event->getEpoch();
	}

	return $result;
	}


	}

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