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Code Issues Releases Wiki Activity

Provide a simple read-only maintenance mode for repositories

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Summary:
Ref T13393. While doing a shard migration in the Phacility cluster, we'd like to stop writes to the migrating repository. It's safe to continue serving reads.

Add a simple maintenance mode for making repositories completely read-only during maintenance.

Test Plan: Put a repository into read-only mode, tried to write via HTTP + SSH. Viewed web UI. Took it back out of maintenance mode.

Maniphest Tasks: T13393

Differential Revision: https://secure.phabricator.com/D20748
This commit is contained in:
epriestley 2019-08-29 12:55:39 -07:00
parent c6642213d5
commit 3c26e38487
8 changed files with 223 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
src/__phutil_library_map__.php
View file

@ -4470,6 +4470,7 @@ phutil_register_library_map(array(
'PhabricatorRepositoryIdentityTransaction' => 'applications/repository/storage/PhabricatorRepositoryIdentityTransaction.php',
'PhabricatorRepositoryIdentityTransactionQuery' => 'applications/repository/query/PhabricatorRepositoryIdentityTransactionQuery.php',
'PhabricatorRepositoryIdentityTransactionType' => 'applications/repository/xaction/PhabricatorRepositoryIdentityTransactionType.php',
'PhabricatorRepositoryMaintenanceTransaction' => 'applications/repository/xaction/PhabricatorRepositoryMaintenanceTransaction.php',
'PhabricatorRepositoryManagementCacheWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementCacheWorkflow.php',
'PhabricatorRepositoryManagementClusterizeWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementClusterizeWorkflow.php',
'PhabricatorRepositoryManagementDiscoverWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementDiscoverWorkflow.php',
@ -4478,6 +4479,7 @@ phutil_register_library_map(array(
'PhabricatorRepositoryManagementListPathsWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementListPathsWorkflow.php',
'PhabricatorRepositoryManagementListWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementListWorkflow.php',
'PhabricatorRepositoryManagementLookupUsersWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementLookupUsersWorkflow.php',
'PhabricatorRepositoryManagementMaintenanceWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementMaintenanceWorkflow.php',
'PhabricatorRepositoryManagementMarkImportedWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementMarkImportedWorkflow.php',
'PhabricatorRepositoryManagementMarkReachableWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementMarkReachableWorkflow.php',
'PhabricatorRepositoryManagementMirrorWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementMirrorWorkflow.php',
@ -10911,6 +10913,7 @@ phutil_register_library_map(array(
'PhabricatorRepositoryIdentityTransaction' => 'PhabricatorModularTransaction',
'PhabricatorRepositoryIdentityTransactionQuery' => 'PhabricatorApplicationTransactionQuery',
'PhabricatorRepositoryIdentityTransactionType' => 'PhabricatorModularTransactionType',
'PhabricatorRepositoryMaintenanceTransaction' => 'PhabricatorRepositoryTransactionType',
'PhabricatorRepositoryManagementCacheWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
'PhabricatorRepositoryManagementClusterizeWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
'PhabricatorRepositoryManagementDiscoverWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
@ -10919,6 +10922,7 @@ phutil_register_library_map(array(
'PhabricatorRepositoryManagementListPathsWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
'PhabricatorRepositoryManagementListWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
'PhabricatorRepositoryManagementLookupUsersWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
'PhabricatorRepositoryManagementMaintenanceWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
'PhabricatorRepositoryManagementMarkImportedWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
'PhabricatorRepositoryManagementMarkReachableWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
'PhabricatorRepositoryManagementMirrorWorkflow' => 'PhabricatorRepositoryManagementWorkflow',

25
src/applications/diffusion/controller/DiffusionRepositoryController.php
View file

@ -145,13 +145,26 @@ final class DiffusionRepositoryController extends DiffusionController {
->setRight(array($this->branchButton, $actions_button, $clone_button))
->addClass('diffusion-action-bar');
$status_view = null;
if ($repository->isReadOnly()) {
$status_view = id(new PHUIInfoView())
->setSeverity(PHUIInfoView::SEVERITY_WARNING)
->setErrors(
array(
phutil_escape_html_newlines(
$repository->getReadOnlyMessageForDisplay()),
));
}
$view = id(new PHUITwoColumnView())
->setHeader($header)
->setFooter(array(
$bar,
$description,
$content,
));
->setFooter(
array(
$status_view,
$bar,
$description,
$content,
));
if ($page_has_content) {
$view->setTabs($tabs);
@ -327,6 +340,8 @@ final class DiffusionRepositoryController extends DiffusionController {
if (!$repository->isTracked()) {
$header->setStatus('fa-ban', 'dark', pht('Inactive'));
} else if ($repository->isReadOnly()) {
$header->setStatus('fa-wrench', 'indigo', pht('Under Maintenance'));
} else if ($repository->isImporting()) {
$ratio = $repository->loadImportProgress();
$percentage = sprintf('%.2f%%', 100 * $ratio);

6
src/applications/diffusion/controller/DiffusionServeController.php
View file

@ -302,6 +302,12 @@ final class DiffusionServeController extends DiffusionController {
}
if ($is_push) {
if ($repository->isReadOnly()) {
return new PhabricatorVCSResponse(
503,
$repository->getReadOnlyMessageForDisplay());
}
$can_write =
$repository->canServeProtocol($proto_https, true) ||
$repository->canServeProtocol($proto_http, true);

4
src/applications/diffusion/ssh/DiffusionSSHWorkflow.php
View file

@ -255,6 +255,10 @@ abstract class DiffusionSSHWorkflow extends PhabricatorSSHWorkflow {
'user account.'));
}
if ($repository->isReadOnly()) {
throw new Exception($repository->getReadOnlyMessageForDisplay());
}
$protocol = PhabricatorRepositoryURI::BUILTIN_PROTOCOL_SSH;
if ($repository->canServeProtocol($protocol, true)) {
$can_push = PhabricatorPolicyFilter::hasCapability(

7
src/applications/repository/engine/PhabricatorRepositoryPullEngine.php
View file

@ -52,6 +52,13 @@ final class PhabricatorRepositoryPullEngine
$repository = $this->getRepository();
$viewer = PhabricatorUser::getOmnipotentUser();
if ($repository->isReadOnly()) {
$this->skipPull(
pht(
"Skipping pull on read-only repository.\n\n%s",
$repository->getReadOnlyMessageForDisplay()));
}
$is_hg = false;
$is_git = false;
$is_svn = false;

104
src/applications/repository/management/PhabricatorRepositoryManagementMaintenanceWorkflow.php Normal file
View file

@ -0,0 +1,104 @@
<?php
final class PhabricatorRepositoryManagementMaintenanceWorkflow
extends PhabricatorRepositoryManagementWorkflow {
protected function didConstruct() {
$this
->setName('maintenance')
->setExamples(
"**maintenance** --start __message__ __repository__ ...\n".
"**maintenance** --stop __repository__")
->setSynopsis(
pht('Set or clear read-only mode for repository maintenance.'))
->setArguments(
array(
array(
'name' => 'start',
'param' => 'message',
'help' => pht(
'Put repositories into maintenance mode.'),
),
array(
'name' => 'stop',
'help' => pht(
'Take repositories out of maintenance mode, returning them '.
'to normal serice.'),
),
array(
'name' => 'repositories',
'wildcard' => true,
),
));
}
public function execute(PhutilArgumentParser $args) {
$viewer = $this->getViewer();
$repositories = $this->loadRepositories($args, 'repositories');
if (!$repositories) {
throw new PhutilArgumentUsageException(
pht('Specify one or more repositories to act on.'));
}
$message = $args->getArg('start');
$is_start = (bool)strlen($message);
$is_stop = $args->getArg('stop');
if (!$is_start && !$is_stop) {
throw new PhutilArgumentUsageException(
pht(
'Use "--start <message>" to put repositories into maintenance '.
'mode, or "--stop" to take them out of maintenance mode.'));
}
if ($is_start && $is_stop) {
throw new PhutilArgumentUsageException(
pht(
'Specify either "--start" or "--stop", but not both.'));
}
$content_source = $this->newContentSource();
$diffusion_phid = id(new PhabricatorDiffusionApplication())->getPHID();
if ($is_start) {
$new_value = $message;
} else {
$new_value = null;
}
foreach ($repositories as $repository) {
$xactions = array();
$xactions[] = $repository->getApplicationTransactionTemplate()
->setTransactionType(
PhabricatorRepositoryMaintenanceTransaction::TRANSACTIONTYPE)
->setNewValue($new_value);
$repository->getApplicationTransactionEditor()
->setActor($viewer)
->setActingAsPHID($diffusion_phid)
->setContentSource($content_source)
->setContinueOnNoEffect(true)
->setContinueOnMissingFields(true)
->applyTransactions($repository, $xactions);
if ($is_start) {
echo tsprintf(
"%s\n",
pht(
'Put repository "%s" into maintenance mode.',
$repository->getDisplayName()));
} else {
echo tsprintf(
"%s\n",
pht(
'Took repository "%s" out of maintenance mode.',
$repository->getDisplayName()));
}
}
return 0;
}
}

35
src/applications/repository/storage/PhabricatorRepository.php
View file

@ -1410,6 +1410,12 @@ final class PhabricatorRepository extends PhabricatorRepositoryDAO
}
}
if ($write) {
if ($this->isReadOnly()) {
return false;
}
}
return false;
}
@ -2266,6 +2272,35 @@ final class PhabricatorRepository extends PhabricatorRepositoryDAO
return $this->isGit();
}
public function isReadOnly() {
return (bool)$this->getDetail('read-only');
}
public function setReadOnly($read_only) {
return $this->setDetail('read-only', $read_only);
}
public function getReadOnlyMessage() {
return $this->getDetail('read-only-message');
}
public function setReadOnlyMessage($message) {
return $this->setDetail('read-only-message', $message);
}
public function getReadOnlyMessageForDisplay() {
$parts = array();
$parts[] = pht(
'This repository is currently in read-only maintenance mode.');
$message = $this->getReadOnlyMessage();
if ($message !== null) {
$parts[] = $message;
}
return implode("\n\n", $parts);
}
/* -( Repository URIs )---------------------------------------------------- */

43
src/applications/repository/xaction/PhabricatorRepositoryMaintenanceTransaction.php Normal file
View file

@ -0,0 +1,43 @@
<?php
final class PhabricatorRepositoryMaintenanceTransaction
extends PhabricatorRepositoryTransactionType {
const TRANSACTIONTYPE = 'maintenance';
public function generateOldValue($object) {
return $object->getReadOnlyMessage();
}
public function applyInternalEffects($object, $value) {
if ($value === null) {
$object
->setReadOnly(false)
->setReadOnlyMessage(null);
} else {
$object
->setReadOnly(true)
->setReadOnlyMessage($value);
}
}
public function getTitle() {
$old = $this->getOldValue();
$new = $this->getNewValue();
if (strlen($old) && !strlen($new)) {
return pht(
'%s took this repository out of maintenance mode.',
$this->renderAuthor());
} else if (!strlen($old) && strlen($new)) {
return pht(
'%s put this repository into maintenance mode.',
$this->renderAuthor());
} else {
return pht(
'%s updated the maintenance message for this repository.',
$this->renderAuthor());
}
}
}