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Provide a simple read-only maintenance mode for repositories
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
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8 changed files with 223 additions and 5 deletions
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@ -4470,6 +4470,7 @@ phutil_register_library_map(array(
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'PhabricatorRepositoryIdentityTransaction' => 'applications/repository/storage/PhabricatorRepositoryIdentityTransaction.php',
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'PhabricatorRepositoryIdentityTransactionQuery' => 'applications/repository/query/PhabricatorRepositoryIdentityTransactionQuery.php',
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'PhabricatorRepositoryIdentityTransactionType' => 'applications/repository/xaction/PhabricatorRepositoryIdentityTransactionType.php',
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'PhabricatorRepositoryMaintenanceTransaction' => 'applications/repository/xaction/PhabricatorRepositoryMaintenanceTransaction.php',
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'PhabricatorRepositoryManagementCacheWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementCacheWorkflow.php',
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'PhabricatorRepositoryManagementClusterizeWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementClusterizeWorkflow.php',
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'PhabricatorRepositoryManagementDiscoverWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementDiscoverWorkflow.php',
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@ -4478,6 +4479,7 @@ phutil_register_library_map(array(
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'PhabricatorRepositoryManagementListPathsWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementListPathsWorkflow.php',
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'PhabricatorRepositoryManagementListWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementListWorkflow.php',
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'PhabricatorRepositoryManagementLookupUsersWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementLookupUsersWorkflow.php',
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'PhabricatorRepositoryManagementMaintenanceWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementMaintenanceWorkflow.php',
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'PhabricatorRepositoryManagementMarkImportedWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementMarkImportedWorkflow.php',
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'PhabricatorRepositoryManagementMarkReachableWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementMarkReachableWorkflow.php',
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'PhabricatorRepositoryManagementMirrorWorkflow' => 'applications/repository/management/PhabricatorRepositoryManagementMirrorWorkflow.php',
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@ -10911,6 +10913,7 @@ phutil_register_library_map(array(
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'PhabricatorRepositoryIdentityTransaction' => 'PhabricatorModularTransaction',
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'PhabricatorRepositoryIdentityTransactionQuery' => 'PhabricatorApplicationTransactionQuery',
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'PhabricatorRepositoryIdentityTransactionType' => 'PhabricatorModularTransactionType',
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'PhabricatorRepositoryMaintenanceTransaction' => 'PhabricatorRepositoryTransactionType',
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'PhabricatorRepositoryManagementCacheWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
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'PhabricatorRepositoryManagementClusterizeWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
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'PhabricatorRepositoryManagementDiscoverWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
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@ -10919,6 +10922,7 @@ phutil_register_library_map(array(
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'PhabricatorRepositoryManagementListPathsWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
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'PhabricatorRepositoryManagementListWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
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'PhabricatorRepositoryManagementLookupUsersWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
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'PhabricatorRepositoryManagementMaintenanceWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
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'PhabricatorRepositoryManagementMarkImportedWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
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'PhabricatorRepositoryManagementMarkReachableWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
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'PhabricatorRepositoryManagementMirrorWorkflow' => 'PhabricatorRepositoryManagementWorkflow',
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@ -145,13 +145,26 @@ final class DiffusionRepositoryController extends DiffusionController {
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->setRight(array($this->branchButton, $actions_button, $clone_button))
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->addClass('diffusion-action-bar');
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$status_view = null;
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if ($repository->isReadOnly()) {
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$status_view = id(new PHUIInfoView())
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->setSeverity(PHUIInfoView::SEVERITY_WARNING)
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->setErrors(
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array(
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phutil_escape_html_newlines(
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$repository->getReadOnlyMessageForDisplay()),
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));
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}
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$view = id(new PHUITwoColumnView())
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->setHeader($header)
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->setFooter(array(
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$bar,
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$description,
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$content,
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));
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->setFooter(
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array(
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$status_view,
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$bar,
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$description,
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$content,
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));
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if ($page_has_content) {
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$view->setTabs($tabs);
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@ -327,6 +340,8 @@ final class DiffusionRepositoryController extends DiffusionController {
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if (!$repository->isTracked()) {
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$header->setStatus('fa-ban', 'dark', pht('Inactive'));
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} else if ($repository->isReadOnly()) {
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$header->setStatus('fa-wrench', 'indigo', pht('Under Maintenance'));
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} else if ($repository->isImporting()) {
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$ratio = $repository->loadImportProgress();
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$percentage = sprintf('%.2f%%', 100 * $ratio);
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@ -302,6 +302,12 @@ final class DiffusionServeController extends DiffusionController {
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}
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if ($is_push) {
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if ($repository->isReadOnly()) {
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return new PhabricatorVCSResponse(
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503,
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$repository->getReadOnlyMessageForDisplay());
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}
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$can_write =
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$repository->canServeProtocol($proto_https, true) ||
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$repository->canServeProtocol($proto_http, true);
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@ -255,6 +255,10 @@ abstract class DiffusionSSHWorkflow extends PhabricatorSSHWorkflow {
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'user account.'));
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}
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if ($repository->isReadOnly()) {
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throw new Exception($repository->getReadOnlyMessageForDisplay());
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}
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$protocol = PhabricatorRepositoryURI::BUILTIN_PROTOCOL_SSH;
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if ($repository->canServeProtocol($protocol, true)) {
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$can_push = PhabricatorPolicyFilter::hasCapability(
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@ -52,6 +52,13 @@ final class PhabricatorRepositoryPullEngine
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$repository = $this->getRepository();
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$viewer = PhabricatorUser::getOmnipotentUser();
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if ($repository->isReadOnly()) {
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$this->skipPull(
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pht(
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"Skipping pull on read-only repository.\n\n%s",
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$repository->getReadOnlyMessageForDisplay()));
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}
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$is_hg = false;
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$is_git = false;
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$is_svn = false;
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@ -0,0 +1,104 @@
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<?php
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final class PhabricatorRepositoryManagementMaintenanceWorkflow
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extends PhabricatorRepositoryManagementWorkflow {
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protected function didConstruct() {
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$this
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->setName('maintenance')
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->setExamples(
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"**maintenance** --start __message__ __repository__ ...\n".
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"**maintenance** --stop __repository__")
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->setSynopsis(
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pht('Set or clear read-only mode for repository maintenance.'))
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->setArguments(
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array(
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array(
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'name' => 'start',
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'param' => 'message',
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'help' => pht(
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'Put repositories into maintenance mode.'),
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),
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array(
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'name' => 'stop',
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'help' => pht(
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'Take repositories out of maintenance mode, returning them '.
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'to normal serice.'),
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),
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array(
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'name' => 'repositories',
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'wildcard' => true,
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),
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));
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}
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public function execute(PhutilArgumentParser $args) {
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$viewer = $this->getViewer();
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$repositories = $this->loadRepositories($args, 'repositories');
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if (!$repositories) {
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throw new PhutilArgumentUsageException(
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pht('Specify one or more repositories to act on.'));
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}
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$message = $args->getArg('start');
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$is_start = (bool)strlen($message);
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$is_stop = $args->getArg('stop');
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if (!$is_start && !$is_stop) {
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throw new PhutilArgumentUsageException(
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pht(
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'Use "--start <message>" to put repositories into maintenance '.
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'mode, or "--stop" to take them out of maintenance mode.'));
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}
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if ($is_start && $is_stop) {
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throw new PhutilArgumentUsageException(
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pht(
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'Specify either "--start" or "--stop", but not both.'));
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}
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$content_source = $this->newContentSource();
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$diffusion_phid = id(new PhabricatorDiffusionApplication())->getPHID();
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if ($is_start) {
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$new_value = $message;
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} else {
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$new_value = null;
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}
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foreach ($repositories as $repository) {
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$xactions = array();
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$xactions[] = $repository->getApplicationTransactionTemplate()
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->setTransactionType(
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PhabricatorRepositoryMaintenanceTransaction::TRANSACTIONTYPE)
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->setNewValue($new_value);
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$repository->getApplicationTransactionEditor()
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->setActor($viewer)
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->setActingAsPHID($diffusion_phid)
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->setContentSource($content_source)
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->setContinueOnNoEffect(true)
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->setContinueOnMissingFields(true)
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->applyTransactions($repository, $xactions);
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if ($is_start) {
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echo tsprintf(
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"%s\n",
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pht(
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'Put repository "%s" into maintenance mode.',
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$repository->getDisplayName()));
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} else {
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echo tsprintf(
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"%s\n",
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pht(
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'Took repository "%s" out of maintenance mode.',
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$repository->getDisplayName()));
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}
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}
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return 0;
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}
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}
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@ -1410,6 +1410,12 @@ final class PhabricatorRepository extends PhabricatorRepositoryDAO
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}
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}
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if ($write) {
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if ($this->isReadOnly()) {
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return false;
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}
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}
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return false;
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}
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@ -2266,6 +2272,35 @@ final class PhabricatorRepository extends PhabricatorRepositoryDAO
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return $this->isGit();
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}
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public function isReadOnly() {
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return (bool)$this->getDetail('read-only');
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}
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public function setReadOnly($read_only) {
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return $this->setDetail('read-only', $read_only);
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}
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public function getReadOnlyMessage() {
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return $this->getDetail('read-only-message');
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}
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public function setReadOnlyMessage($message) {
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return $this->setDetail('read-only-message', $message);
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}
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public function getReadOnlyMessageForDisplay() {
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$parts = array();
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$parts[] = pht(
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'This repository is currently in read-only maintenance mode.');
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$message = $this->getReadOnlyMessage();
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if ($message !== null) {
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$parts[] = $message;
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}
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return implode("\n\n", $parts);
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}
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/* -( Repository URIs )---------------------------------------------------- */
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@ -0,0 +1,43 @@
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<?php
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final class PhabricatorRepositoryMaintenanceTransaction
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extends PhabricatorRepositoryTransactionType {
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const TRANSACTIONTYPE = 'maintenance';
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public function generateOldValue($object) {
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return $object->getReadOnlyMessage();
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}
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public function applyInternalEffects($object, $value) {
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if ($value === null) {
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$object
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->setReadOnly(false)
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->setReadOnlyMessage(null);
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} else {
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$object
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->setReadOnly(true)
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->setReadOnlyMessage($value);
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}
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}
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public function getTitle() {
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$old = $this->getOldValue();
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$new = $this->getNewValue();
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if (strlen($old) && !strlen($new)) {
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return pht(
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'%s took this repository out of maintenance mode.',
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$this->renderAuthor());
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} else if (!strlen($old) && strlen($new)) {
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return pht(
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'%s put this repository into maintenance mode.',
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$this->renderAuthor());
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} else {
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return pht(
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'%s updated the maintenance message for this repository.',
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$this->renderAuthor());
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}
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}
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}
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